CA1062637A - Parrot-beakable freestanding plastic drum assemblage - Google Patents
Parrot-beakable freestanding plastic drum assemblageInfo
- Publication number
- CA1062637A CA1062637A CA263,775A CA263775A CA1062637A CA 1062637 A CA1062637 A CA 1062637A CA 263775 A CA263775 A CA 263775A CA 1062637 A CA1062637 A CA 1062637A
- Authority
- CA
- Canada
- Prior art keywords
- drum
- circumferential
- end panel
- collar
- top end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
PARROT-BEAKABLE FREESTANDING
PLASTIC DRUM ASSEMBLAGE
Abstract of the Disclosure There is provided a plural part receptacle assemblage for the storage and handling of bulk quantities of material which assemblage includes a tight-head plastic drum molded as a single article to which is concentrically attached, subsequent to the formation of the drum, handling means so arranged and constructed as to be grippable about substantially the full 360° circumference of the drum with steel drum chime-handling devices for transportation of the assemblage and the bulk quantities of material stored in the drum, preferably the drum or handling means, or both, include means for preventing liquid accumulation between the handling means and drum.
PLASTIC DRUM ASSEMBLAGE
Abstract of the Disclosure There is provided a plural part receptacle assemblage for the storage and handling of bulk quantities of material which assemblage includes a tight-head plastic drum molded as a single article to which is concentrically attached, subsequent to the formation of the drum, handling means so arranged and constructed as to be grippable about substantially the full 360° circumference of the drum with steel drum chime-handling devices for transportation of the assemblage and the bulk quantities of material stored in the drum, preferably the drum or handling means, or both, include means for preventing liquid accumulation between the handling means and drum.
Description
T~l* :[nvent-ion The present invention is directed to t.-~ art of materials handling and more particularly is dire~ted to free-; standing plastic drums. Even yet more particularly the invention is directed to a plural part assembly of a plastic j tight-head drum fabri.cated of' an organic polymer and a fitment : , assembled to the drum which allows the drum to ~e handled : 2~ . with conventional steel.drum chime-handling devices.
!
.
,~ l ;. ~ , ; , , .,, ~, I
:~ .
' ~
.
~.
.~
. ,1 .
I
.. ~ ,. . . .. . . .
- . .. . - ., . . ~. . .
., ~`. ~ .... : . : .. . .
i.~, . . - . . .
. . . ` -. . - . ., - ` . . .
.. . . . . . . . , , . , . -. .. `.
;.. ~ .. . . i, ., .~, ... .
i, 10~2637 A-1386g 1 I Steel drums were generally the first success~ul drum utilized ~or purposes of handlingJ storing, and transporting . , ~ bulk quantities of materials, for example, quantities of ¦ material, on a volume basis, on the order of at least about , 30 gallons and more typically on the order of about 50 to 60 ¦¦ gallons. The drum most commonly employed has a nominal volume ¦ of approximately 55 gallons. Because o~ the long and wide ~ spread usage o~ steel drums conventional mechanical equ~pment ¦ has been developed to handle them. This equipment for handling ¦ steel drums may be divided into two general categories One `~ ! o~ these categories is equipment generally designed to handle steel drums along the rolling hoops which are provided in the sidewalls of the drum. The other category of standard equipment which has been developed is generally referred to as ~ 15 !l steel drum chime-handling devices; these devices are adapted J~ 1,' to handle the drum by gripping the upper chime thereof These ' steel drum chime-handling devices generally take the form of I having a hook or claw which grips the chime for appropriate 3 movement and transportation. In the art these types of ¦ chime-handling equipment are variously re~erred to as parrot-~ ¦ beak devices, or occasionally as a cherry picker, chime J ¦ grabbers, and hand trucks. The former type o~ chime-handling j~ device, i.e., a parrot-beak, or cherry picker is represented ! by the device sold by Little Giant Company under the ll designation "Grip-O-Matic". This device in addition to a lower anti-pivot support surface includes two opposed movable jaws, ¦ or beaks, which when brought into contact with a chime are 28 adapted to open so as to allow them to be positioned with the 1. 1 lj - 2 - ~
.. , , I
~1 I
~, I
. 1062637 A-13~69 1 1 chime between them and, upon lifting of the drum, the chime is ¦ lockingly gripped between the jaws or beaks allowing convenient movement and transportationj these aaws then automatically ' release as the drum is set down in its desired location. As is ¦
, the case with a parrot-beak the other steel drum chime-handling devices likewise employ beaks, or ~aws, or hooks, to exert a localized force on the chime which allows for the steel drum to be tilted and appropriately moved. Because the steel drum I handling devices have been standardized for steel drum move-ment they generally function well for their intended purposes.
More recently, however, freestanding tight-head ~ plastic drums have been made avai]able but unfortunately these ;' ~ drums have not yet obtained their full potential. It will be , appreciated that such drums, and especially those which are ~ molded as a single piece article offer many highly desirable characteristics. Some of these desirable characteristics include, for example, low price, low shipping costs, a wide scope of product applications without the need for liners, ` ;~ high resistance to the detrimental influence of weather, 3 20 l lightweight, rust resistance, dent resistance, and in general they are highly aesthetically pleasing. A primary deterrent to the wider acceptance and usage of freestanding plastic , ll drums, and especially tight-head plastic drums which are , molded, for example blow molded, as a single piece article has ~i largely been that conventional steel drum chime-handling ¦, devices cannot conveniently and interchangeably be employed ' li with plastic drums and steel drums for movement and expeditious 28 1 handling of both. Thus there is a problem which needs a : 1 ! ¦
106Z637 ( ~ A-1~869 1 solution and a need exists in the art for providing a plastic drum having all the desirable characteristics indicated above which drum can also be handled for movement and transportation with conventional steel drum chime-handlin~ devices. This 1l need, and the solution of this problem, is especially acute with regard to tight-head plastic drums which are ~ormed by blow molding as a single piece article and are fabricated ' ;,! entirely of the same material. These tight-head, single piece rnolded plastic drums have all of the desirable characteristics indicated above and furthermore they are conveniently and economically produced by a blow molding operation, for example, in an operation wherein a tubular member is blown to the ¦I desired drum configuration.
j ¦I Thus it becomes the general object of this invention -1 15 1~ to provide for a tight-head plastic drum, especially one which ! is molded as a single piece, which can be handled with ¦ conventional steel drum chime-handling devices and especially parrot-beak devices. This is generally accomplished by ~, providing a receptacle assembly, i.e., a receptacle which is il 20 ¦ put together, or assembled, from two completed units, namely 1 ll a prefabricated tight-head drum~ especially one molded as a single piece article, and an attachment, or fitment~ which is ~' grippable by steel drum chime-handling devices, e.g. parrot-, 1l beaks. The attachment is put on, the prefabricated tight-head drum in a durable manner concentrically about the drum and is substantially circumferential, thereby distributing the load on the drum over a wide area and alleviating problems with breakage or rupturing of the drum proper. Additionally in 29 ~ passing it should be mentioned that the fitment, or attachment, ,. I,, ~, ; ~ -4 106Z637 ~ 869 l ¦l is so located on the drum and so arranged and constructed that ~, the strong localized gripping forces exerted by the chime-li handling devices, for example the pinching and gripping forces ! exerted by the edges of opposed beaks of parrot-beak devices, ~ are not localized on the plastic drum proper This is a highly advantageous feature of the present invention in that, should a weakness develop at the points of contact by the jaws or beaks of the chime-handling devices, the potential puncturing, will be of the fitment, or attachment, itself and not a puncturing of the drum with the unacceptable exposure of the contents. This protection against drum puncturing and exposure of the contents is attained by use of an attachment, ~3 I or handling means, which is independent and separate of the plastic drum per se and of any means used to attach a head to 1 a body to form a plastic drum. Other highly desirable features which are provided by this invention are that the receptacle 1 assemblies can be easily stacked and the provided handling ~ means functions in the manner of a shock absorber to substant-3, 1~ ially eliminate possible damage to the drum proper ~ Additionally in a highly important embodiment the handling ~1~ 5 means are removably assembled onto the drum; thus should damage result to the handling means, as for example might occur when it absorbs a strong sudden force, such damaged means can be easily separated from the assembly and the drum salvaged.
$ 25 I This interchangeability of parts of course provides for great ~ 26 I economic premiums. In another important embodiment of this .
,.~. l ,,~, , ~ ` ~
_ ~ _ !!
1 1 invention the receptacle assembly is provided with a drainage feature to prevent the accumulation of liquids befween the drum proper and the handling means; the desirability, safety ¦l and advantages of such a drainage feature will be readily I apparent to those skilled in the art.
3 Gebrauchsmuster 74 120 47 contemplates a drum in which injection molded rings are inserted during a drum molding operation. There is no reco~nition however in the German ~ Gebrauchsmuster 74 120 47 of an assembly as contemplated herein ¦ wherein handling means are assembled to an already formed plastic drum. The difficulties of inserting rings into the mold during blow molding will be readily apparent to those skilled in the art as well as the deficiencies thereof such as, ¦ for example, a longer blowing cycle which greatly increases 1l the costs of the final drum. Similarly, because of the 1 jl permanent attachment of the rings interchangeability of parts 1 3 iS not possible. Another drum of the prior art involves formation by a method whereby a body and lid are formed ~` i separately and then joined by spin welding in order to form a I sealed tight-head drum. As will be readily apparent these . 3 drums are not entirely satisfactory since they are subject to leakage at the seams. Furthermore the attempted gripping of l the top of such drums such as, for example, by a parrot-beak .1 3, device causes a situation wherein the localized ~orces of the I opposed edges of the beaks of such a device may cause the drum itself to puncture thereby exposing its contents.
j Proposals have also been made in the prior art for ¦~ employing a small flexible loop, or a receptacle, associated 29 1 with the bung to allow, for example~ the hook of a hand truck ` ~, -6-.' 131 1 1~62637 A-13859 l ¦, to engage same. See U S. Patent No. 3,8~9~839. Neither of these proposals are satisfactory because the loop and receptacle~
are not concentrically disposed about the drum coaxial with ! the drum axis to allow an approach thereo~ t:nrough substantially ,~ 360 and likewise these proposals result in the exertion of severe forces on small localized areas which makes the bung ~ highly susceptible to rupture and puncturing.
¦ German Patent No. 2,008,111 and U. S. Patent No.
3,851,788 discloses plastic drums but they have no recognition ¦ of an assembly as contemplated herein using an attachment which is grippable for example by a parrot-beak device and ¦ wherein such gripping does not cause any dangers to puncturing , j of the drum proper.
; ¦! U. S. Patent No. 1,909,028 relates to a metallic 1l shipping and storing vessel which has protective rings or bumpers retained in permanent engagement with the vessel. The ¦I rings have an annular portion to facilitate grasping and are provided with safety features for handling with the palms of the hands. There is no description of the present invention i therein nor of the many attributes thereof as mentioned above.
Thus, in accordance with one feature of this invention ¦ there is provided a receptacle for the storage and handling of bulk quantities of material, e.g. greater than about 30 ;l I gallons and typically between about 50 to about 60 gallons, ~ which receptacle is assembled, or put together~ from a prefabricated, freestanding tight-head plastic drum and 27 prefabricated handling means. Most desirably the drum is ~;
,., I' ., I ~
,. ~06Z637 A-138~9 1 l, molded as a single piece artic:Le for example by blow molding from a tubular member. The handling means is concentrically ¦~ and tightly assembled to the drum coaxial with the drum axis ' and is so arranged and constructed as to be grippable by steel I drum chime-handling devices, especially parrot-beak devices, ¦ to enable manipulation and transportation of the receptacle in a substantially upright position. Desirably the handling means and the drum will be provided with a substantially , circumferential, horizontally disposed jog providing for I inter-engaging surface portions. While the inter-engaging surfaces provided by the respective jog may respectively project or extend, outwardly, i.e., away from the longitudinal axis of the drum, or inwardly, i.e., toward the longitudinal axis, it is generally pre~erred that the inter-engagable surface I included in the drum be recessed~ or indented, i.e., inwardly projecting, and the handling means inter-engagable surface also pro~ect inwardly. Additionally in order to provide a safer, ; cleanable receptacle, means are provided elther integral with ¦' the drum or the handling means, or both, which are adapted jl and constructed to prevent the accumulation of liquids between ¦, the steel drum chime-handling means and the drum. According j ¦~ to an especially important embodiment of this invention the handling means will be removably assembled to the drum thereby allowing ~or the interchangeability o~ various drums and the ~l handling means. Maximized bene~its of the assemblage will be ¦, obtained when the handling means projects upwardly sufficiently ¦
l' so that at least an upper margin thereof lS generally at least 28 1, flush with the upper surface of the drum, i.e., at least an .. I, I
sl ! 1 . I I
~ , - 8 -~., l ~i i ~06Z637 upper marginal portion of the handling means ~ill be in a plane which LS at least coincident, or above; a horizontal plane defined .
by the upper margi`n of the drum. In tfiis ~ay stacking is facili-tated and the bung area protected. In another preferred embodi-ment of the Lnvention tfie abo~e referred to handling means would .; generally be disposed at an upper portïon of the receptacle and a similar member will be generally disposed adjacent the bottom of thç drum which will allow and facïlïtate hand rolling of the drum when in an upright position and improve the stability and strength of the drum, for example, upon the receptacle being drop-ped, and likewise will allow for the gripping and handling of the drum by steel drum chime-handling devices when in an inverted position. Advantageously means are provided for tensioning the handling means to bring the latter into tight holding engagement ;
with the drum and preferably the means will be releasable.
Thus, in accordance with the present teachings, a plastic drum assembly is provided which comprises a single piece 'l :
blow molded plastic drum which has a top end panel, a bottom end , panel and a circumferential sidewall which joins the top and . .
bottom end panels with the top end panel defining at least one - opening therethrough. The sidéwall includes a horizontal circum-ferential recess adjacent the top end which has a substantially semi-circular cross section and at least one arcuate substantially verical drain chennel formed in the surface of the recess. A
split metal collar is provided mounted on the drum which has a vertically disposed wall portion which includes a substantially circumferential inwardly extending projection adjacent the lower ~ margin of the vertically disposed ~all portion with the inwardly ;i extending pro j ection having a substantially semi-circular cross i 30 section positioned within an in snug contact with the recess. The metal collar further ïncludes a su~stan*lally cïrcumferentïal , .. .
rolled annular bead which i5 di..~po~ed adjacent the upper margin of the.ver~ï.cally disposed porti.on wit~.the annular bead being located above the top e.nd whereby the me.tal collar and the drum are movable by chime-gri.pS~ing drum handling devIces.
. In accordance wïth.a further teaching, a plastic : drum assem~ly i.s provï.ded for the storage, handling and shipment of materials whi.ch.assembly comprises, in com~ination, a single piece molded plastic drum which has a top end panel, a bottom end panel and a circumferential sidewall merging with the top and .
. 10. bottom end panels wi.th the top end panel defïning an opening.
The circumferenti.al sidewall includes a circumferential indenta-. tion adjacent the top end panel with a circumferentiallv dis- ;
~ posed collar removably assembled to the drum. The collar is :: adapted for gri.pping at its upper edge by steel drum chime-handling devices about substantially the full 360~ of the circum-, ference and has an inwardly disposed circumferential projection ~ at its lower edge with the circumferential projection engaging : the circumferential indentation to retain the collar on the :I plastic drum. ~ .
' 2Q By yet another embodiment, a plastic drum assambly for the storage, handling and shipment of materials is provided with the assembly comprising, in combination, a ~;.
single piece molded plastic drum which has a top end panel, a bottom end panel and a circumferential sidewall which merges with the top and bottom end panels with the top end panel dein- :
ing an opening. The circumferential sidewall includes a circum-ferential indentation adjacent the top end panel, at least one channel formed in, and transverse to, the circumferential indenta- :~
tion for drainage of liqui.ds from the top end panel whilst the ~ 30 drum is in an upright posi.tion. A ci.rcumerenti.ally disposed collar i.s provided removably as-s-em~led to the. drum, the collar has at ï.ts upper e.nd an annular ~ead adapted for grïpping the ,,.~ ~ .
i'~ ' ` ,, ,` -9a-:- .. . .
. - ~ , . . ' . ~ ,:
steel drum chime-handling devices ahout s.ubs.tanti.ally the full 360 J of the circumferen.ce. An ïnwardly-disposed cïrcumferenti.al projection i.~ provi.ded at the lower edge which.projection engages : the circumfere~tial mdentation to retain. the collar on the plas-tic drum. The collar above the circumferential projection is out of contact with the plastic of t~e drum and being spaced apart from ~ut confronting t~e drum sidewall. .
Referring to the drawings:
Figure 1 is a side view of a plastic drum having :~ lQ upper and lower handling means assembled thereto;
Figure 2 is generally a top view of the drum .. and handlïng means assembly;
Figure 3 is a fragmentary sectional view taken along line 3-3 of Figure 2 more clearly showing portions of the . handling means and drum and illustrating a drainage channel;
Figure 4 is a fragmentary sectional view taken :, along line 4-4 of Figure 2;
., '~
.:1 20 : . .
:, .
. j .
. ~ .
:~ ' ....
-2b-; .
, ~ .
.
_ !
lO~;ZG37 ~ ~
1.; 1 1 Figure 5 is a fragmentary sect:ional view taken along ' line 5-5 of Figure 3 more clearly showing a drainage channel;
Il Figure 6 is generally a partial side view more clearly .. , 'i indicating the handling means and adjustable means for ,~ tensioning the handling means, Figure 7 is a fragmentary sectional view of a bottom ¦ portion of the receptacle assembly;
Figures 8 and 9 are fragmentary sectional views showing an alternate embodiment of the invention, 10 ¦ Figures 10-12 illustrate a further embodiment of the I invention.
; Referring now more specifically to Figures 1-7 it will be seen that the plural part receptacle as~embly of this ~ invention comprises a drum 2 which drum includes at the upper 15 1~ portion thereof means~ e.g. a collar 4, so arranged and i constructed as to be grippable by steel drum chime-handling , devices. Similar]y, the drum includes at the bottom portion I thereof means, illustrated as a collar 6 grippable by steel ~ li drum chime-handling devices when the drum is in an inverted 1 20 ~I position and which means serve to allow for rolling of the drum when it is in a substantially upright position. Drum 2 is a tight-head drum formed as a single piece article by a ¦ blow molding operation. Subsequent to the formation of this tight-head dru~, collar 4, and if desired collar 6, is 25 ! subsequently assembled onto drum 2 to form the plural part assembly. Drum 2 is substantially cylindrical in shape and 27 1' comprises a generally circumferential sidewall 8 which merges, ',1 i, ~
.'. 1, .
I, - 10 -' 1 ¦, with a slight taper, at its lower portion with bottom end 10.
¦ At its upper margin circum~erential sidewall merges~ again ¦l with a slight taper, with the top end of the drum, generally ~l designated 11. Top end 11 includes a generally raised panel ,~ portion 12, which serves as a supporting surface, and merges ~¦ with generally depressed sections 13 which include at least l~ one, and preferably two diametrically opposed, upwardly extending tubular projections 14 which tubular projections ¦ define an opening into the internal zone of drum 2, i.e., ¦ tubular projection 14 defines a bung hole opening into the drum. In the preferred mode of practicing this invention the ¦ tubular pro~ection will of course be provided with suitable ¦ closure means which are not shown but which are conventional ' and well known in the art. Generally lt is pre~erred that the - 15 i upper surface of tubular projection 14 and the upper surface ! i of panel 12 be generally in about the same horizontal plane.I! Sidewall 8 at a location adjacent top end 11 is provided with Il a substantially circumferential generally horizontally disposed `~ ~' jog, illustrated as inwardly projecting arcuate surface portion I ? ~ 15, Pre~erably the circum~erential surface portion 15 will -~ I be located about 1-3 inches below depressed section 13. As indlcated arcuate projecting surface 15 is an inwardly ¦l projecting, or extending surface, or recess, but as will be apparent it could likewise be an outwardly projecting, or ~l outwardly extending, surface. Similarly, drum sidewall 8 adjacent bottom end 10 is formed with a jog, shown as an inward-~ ly projecting arcuate surface 15'. As will be seen 28 1, substantially circumferential projecting surface portion 15, - 11 _ , , ~, ,, 1 106Z637 A~13869 1 ~l and for that matter 15', are adapted to inter-engage in a 1 nesting manner with surfaces provided on collar 4 and collar 6 !I respectively In a preferred mode drum sidewall 8 also l~ includes outwardly projecting ribs 16 which function in the ll manner of rolling hoops. Additionally, and as best seen in Figures 4 and 5~ drum sidewall 8 is preferably provided wi~h means for preventing the accumulation o~ liquids between collar 1 4 and drum 2. These means may take the form of at least one ¦ drainage channel 17 integrally ~ormed in projecting sur~ace 15 ~ in the manner of a dimple-like channel. Preferably, a ¦ plurality of drainage channels will be employed which are ¦ substantially uniformly distributed along the circumference of projecting surface 15. If desired circumferentially disposed inwardly projecting surface 15' may be provided with similar , channels.
After providing the primary element, i.e., the drum, I a secondary element is then put on, or assembled to, the drum j~ to provide the handling means for the assembly. The handling ¦, means are so arranged and constructed as to be grippable by 1 steel drum chime-handling devices, and especially the opposed jaws of parrot-beak devices, to enable manipulation, movement J and transportation o~ the receptacle assembly, notably drum 2, I in a substantially upright position. Hignly advantageously ¦~ the handling means are removably attached, i.e., not bonded, 1l to the drum so that the handling means can be removed withoùt significant structural drum damage as otherwise would result ~ if attachment was permanent as with rivets, or chemical bonds 28 ii produced by adhesives or spin welding. In the preferred ~ I ~ 12 -I, 1062637 A-13869 embodiment collar 4 is shown as a removable split collar and ll means are provided, which can be released a-nd adjusted for ; ~I tensioning the collar into holding relationship with drum 2.
i It will be apparent that a substantially continuous removable ~I collar could likewise be employed with the collar being brought into snug tight holding engagement with the drum by press fitting. Thus, as seen in the drawings collar 4 is a split collar and is concentrically and coaxially assembled about the longitudinal axis of drum 2. Collar 4 is generally I axially elongate and includes a substantially circumferential ¦ vertically disposed wall 18 which merges at a lower margin ¦ thereof with circumferential horizontally disposed jog illustrated as an inwardly extending projection 19 of arcuate configuration. Collar 4, in addition to drainage channels 17 ~, of drum 2, or in lieu thereof, can include at least one ; I drainage channel 20, and preferably a plurality of drainage channels in a uniform array, to prevent the accumulation of liquids between collar 4 and drum 2c For convenience drainage channel 20 is only illustrated in Figure 3. As seen channel 1 20 is preferably formed adjacent, i e. near or at, the junction I of wall 18 and projection 19. Vertical wall 18 merges at an i upper margin thereof with a portion so arranged and ! constructed to be grippable by steel drum chime-handling devices ;~ , so as to allow movement and transportation of the receptacle.
; 25 In a preferred embodiment this portion is a chime or bead-like configuration 21. As will be apparent the opposed jaws of parrot-beak devices will holdingly grip the collar with one 28 ' jaw engaging the inside surface of wall 18 and the other jaw ~.
1 engaging the outer underside surface of bead-like portion 21.
In effect that underside surface is a ledge which provides a ' surface which is inclined relative to the longitudinal axis ,, of the drum so that one of the jaws can securely grip same.
1¦ Any suitable configuration such as, for example, the project-¦ ions provided by a denticulated upper surface portion of I ¦ wall 18, may likewise be employed so long as it satisfies its ; ¦ purpose of being grippable by steel drum chime-handling devices, I especially the jaws of parrot-beak devices.
Means, best seen in Figure 6, are also preferably provided for tensio~ing collar 4 to bring it into engagement with drum 2 so as to maintain attachment of collar 4 to drum 2 during use. One suitable approach is to employ a set of such means axially displaced on the external surface of wall 1~
: 15 ¦ respectively near the top and bottom of collar 4. Near opposed edges 22 of the opening in split collar 4, wall 1~ carries both at a lower location and an upper location opposed and l I aligned tubular bushings 23 and 23 t ~ at least one of which ; , (23') is internally threaded, through which a screw generally ¦ designated 24, passes. Thus a tightening of the collar to the l ¦ drum is effected by tightening the screw 24, and removal of ; I collar 4 can be effected by a loosening or release of screw 24.
, Another suitable approach is to locate such means on the externally disposed surface of inwardly extending projection 19 of collar 4, i.e., in the open concavity of the embodiment .~ ~ illustrated in Figures 1-6. Further durability can be obtained by using a small rod (not shown) which is inserted in ~ ' ~
, ,.
~ ~0~2637 ~-13869 , .
1 il the opening of the bead-like ~rippable portion 21 illustrated in Figures 1-5~ which rod spans the opening between opposed ~i edges 22 and crimping portion 21 into engagement with the rod.
- ¦l In the preferred embodiment collar 4 is of a !I sufficient height such that its upper margin proceeds upwardly ¦¦ sufficiently to be at least about flush with, and desirably ¦ slightly above, the upper margin of tubular projections 14.
¦ In this way stacking is facilitated and the projections 14 j protected from damage. Additionally it should be noted that ¦ the portion, e.g. bead-like portion 21, of collar ~ which is grippable by parrot-beak chime-handling devices is not part ; I of the drum per se and so arranged and constructed such that the jaws thereof do not exert their strong localized pinching ;~ ~ forces on the drum, thus precluding the unacceptable ¦ possibility of puncturing the drum. In the preferred embodiment collar 4 is a metal collar having a wall thickness of at least about 0.04 inches, such as, for exa~ple, sheet metal, like 16 or 18 gage low carbon sheet rolled steel.
¦¦ A blow molded single piece drum of high density ¦I polyethylene having a nominal capacity of 55 gallons of the type described was tested with water. The split collar 4 was formed from 18 gage low carbon cold rolled sheet steel and the inwardly extending concave projection 19 was approximately semi-circular with a radius of about 3/8 o~ an inch.
¦1 Approximately the same radius was used for the drum indentation , 15. Tensioning of the collar was effected with 5/16", 18 ', 27 ¦1 threads per inch screws (24 ) which were tightened to a torque $' 1~
.,. 1~
- ~ 15 i.
-j~
~ i ~06Z637 A-l386g !i f about lO0 inch x pounds. The water filled receptacle !~ assembly showed good handling characteristics when moved and i handled with a parrot-beak chime-handling device. Generally it is desirable to use a drum wall thic~ness of at least about 1 0.125" most desirably between about 0.130 to about 0.150".
¦ Figure 7 illustrates the general configuration of the ¦ lower portion of the drum wherein handling means are likewise provided which handling means are grippable by steel drum chime-handling devices when the drum is in an inverted position and which handling means likewise provides a surface upon which the drum may be hand rolled when in a substantially upright position. As seen in Figure 7 sidewall 8 includes a 1 I circumferential, generally horizontal inwardl~ projecting ; ¦ arcuate surface 15'. Collar 6 includes a vertical wall 18~
! which merges at its lower margin with a grippable chime~ e !I projection 21~, The lower portion of collar 6 will generally be about flush with the bottom of the drum. The upper margin of wall 18' generally merges with a jog shown as an inwardly li extending arcuate projection l9', with the inwardly extending 1¦ projection l9i of collar 6 being in inter-engaging relation-ship with the corresponding inwardly extending arcuate ¦ projection 15' of drum 2, Collar 6, like collar 4, may be continuous or split and may be assembled to drum 2 in the manner described with regard to collar 4. Collar 6 may likewise ~ 25 ¦I be provided with an appropriate drainage channel to prevent ; ¦i the accumulation of liquids between the drum 2 and collar 6, ¦I such as f'or example as may occur when the drum is stored in an inverted position. Additionally if desired lower Il circumferential inwardly projecting surface 15' may if desired 1l be provided with a drainage channel, or channels, in the 31 1' manner of channel 17.
. i ~ I - 16 -l ~ ( i 1062637 A-13869 1' ~
1 In ano-ther embodiment of this invention fragmentarily ¦
illustrated in Figure 8, sidewall 8' of drum 2 is provided with horizontally disposed circu~ferential jog illustrated as an outwardly projecting sur~ace 15" and assembled thereto ,~ is a collar 4'. Collar 4' includes a vertical wall 18"
which merges at its upper margin with a grippable portion, such as bead-like portion 21" and wall 18" merges at its lower margin with an outwardly proJecting portion lg~r~ Projecting I surface 15" of the drum and the projecting sur~ace 19" of ; ' the collar are in a snug inter-engaging relationship.
¦¦ Contacting collar 4' and, more specifically, contacting j projecting surface 19" is a tension band 25, which in the l~ preferred embodiment will be a removable tension band.
; l¦ Exemplary of such a tension band is a conventional ring ~ employed on open head fiber drums for securing the head to ¦I the body. As with the preferred embodiment previously described above, with respect to Figures 1-5, it is preferred that collar member 4' extend sufficiently upwardly such l~ that its upper margin is at least about flush with the !` upper margins of the tubular projections which define i the bung openings. As previously indicated either the drum or the handling means, or both, may be provided with an appropriate drainage channel for preventing , the accumulation of water between the handling-means and the ; 25 ~I drum. In Figure 8, while it will be apparent that, preferably, ~, 26 a plurality will be employed, one drainage channel to .~' i ;. ,, '' ~', ~,.
!
i:
` - 17 -!
!l l A-13869 ' ~062637 1 l~ accomplish that purpose is shown by the dotted llne 17", which channel is formed in projection 15".
l, The fragmentary view of Figure 9 represents still i an alternate embodiment of this invention showing the drum l sidewall 8' as likewise being provided with a substantially circum~erential outwardly extending sur~ace, portion 15".
To the drum, as before, there is then assembled appropriate handling means. Here the handling means illustrated has a convex outwardly projecting portion 32 which inter-engages with projectlon 15" on sidewall 8', preferably in a forced, or interference, fit manner and projecting portion 32 merges with a first leg portion 26 shown here in substantially intimate contact with sidewall 8' First leg portion 26 then merges with an outwardly extending shoulder portion 27, i shoulder portion 27 in turn merging with a second leg portion 28 which in turn merges with an upper laterally projecting portion 29 so arranged and constructed as to allow steel I drum handling devices, for example, a parrot-beak device, to : 1~ grip same to allow movement and transportation of the drum.
1i The under surface of the laterally projecting portion 29 ¦¦ provides a ledge to facilitate secure gripping by the jaws of , a parrot-beak device. A tension band 30 will be employed to help retain the handling means in tight holding engagement with the drum. As shown tension band 30 is disposed in the , reentrant zone defined by a portion of projection 32, ¦~ shoulder 27, and ~irst leg portion 26. In order to prevent the accumulation of liquids between the drum and the handling ' means illustrated in Figure 9 a channel for drainage~ such .J 29 as that indicated as 31, generally formed in shoulder 27, ., I .
, , 1~62637 A-1~869 1 l may ~,e employed As indicated hereinbefore pre~erably a plurality of such channels will be distributed in a uniform , circumferential pattern on the handling means. As ~ contemplated in Figure 9 the handling means for the drum need 1~ not extend sufficiently high to be at least flush with upper margins of the drum. It will be noted however that the lakerally projecting portion 29 is sufficiently removed from the drum so as to allow parrot-beak jaws to pinchingly and grippingly engage the handling means without danger of such ; 10 engagement with the drum, or drum wall~ thereby precluding ; ¦ any possibility of puncturing the drum by the strong localized forces exerted by such jaws.
In passing it should be mentioned that preferably the inter-engaging jogs of the handling means and drum will ¦Z be disposed at a location on the sidewall which is below~
¦ e g. 1-3" beneath, what may be viewed as the annular edges of ¦Z the drum. In this way the forces exerted on the handling Z 1I means during handling and stacking of the drums will be ' uniformly distributed along a strong large section o~ the drum. Further, as indicated in the preferred embodiment~
the handling means is at least flush with the upper margin of the drum top thus providing additional protection for ¦I the drum. Both of these characteristics result in extremely desirable drop and impact test results.
llReferring now to Figures 10-12 another embodiment is illustrated. As seen in Figure 10~ a single piece blow 27 molded plastic drum 2 is provided which drum has a .; i.
, l' `~ 1 I' ~062637 A~1~869 circumferent:ial sidewall 45 which merges at its lower margin wîth a bottom wall 46 and at its upper margin with a top wall generally designated 47 Top wall 47, not unlike the ,~ previously described embodiments,includes an upwardly extending ¦
- 5 ¦ panel 48 and depressed sections 49. Depressed top section 49 - ~! includes at least one and preferably two diametrically opposed tubular projections 50 which serve to define the bung I openings into the drum. Sidewall 45 preferably also includes ¦ two axially displaced integrally blownprojecting ribs 51 which 1 function as rolling hoops for the drum. The drum will most advantageously be formed of high density polyethylene. The ¦ upper portion of sidewall ~5 is generally of a substantially joggled configuration, i.e., a configuration having a plurality o~ integral circumferentially disposed outer surface 1I portions 52 interspersed with a plurality of integral inwardly extending cavities 53. These cavities are arranged and constructed to provide hand grips on the drum and also serve to allow drainage of liquids. Substantially circumferentially ~ about the drum, outer surface portions 52 of sidewall 45 are I provided with an array of inwardly extending surface portions, !i or recesses 54 which are aligned at the same height on the ; I drum. The assembled handling means grippable by chime-handling i devices is illustrated as a continuous ring 55 tightly, e g.
~ by a press fit, engaging the recess array 54. In the ~ embodiment illustrated inwardly extending cavities 53, and inwardly extending, projecting surfaces 54 along with ring 55 are so proportioned and arranged as to allow a steel drum 28 i chime-handling device, such as for example a parrot-beak device, .,, ,, i .
,' i'.
~ - 20 -" j, !
1,, 1 ~ .
I 1 ! to contact the externally disposed surface of ring 55 and then move into locking and gripping relationship with the ring for movement and transportation of the receptacle. That is, ~l generally the radial distance between the internally disposed ~, surface of ring 55 and the externally disposed surface of cavities 53 will be sufficient to allow the jaws of such . ( devices to enter and grip the ring for movement and I transportation of the drum without the jaws exerting any penetrating type pinching force upon the plastic drum itself, While the handling means of Figures 10-12 is shown as a .` ¦ simple ring which is arcuate ln cross section it will, of j course, be readily apparent great variation is possible, . 1l For example, the ring may take the form of a collar like that previously discussed, and the releasable mechanical means previously described for tensioning a collar may be employed.
_ 1.
: 1~
~t i . .
1 l ¦ ~ .
.~
~' 11 Il - 21 -, 11
!
.
,~ l ;. ~ , ; , , .,, ~, I
:~ .
' ~
.
~.
.~
. ,1 .
I
.. ~ ,. . . .. . . .
- . .. . - ., . . ~. . .
., ~`. ~ .... : . : .. . .
i.~, . . - . . .
. . . ` -. . - . ., - ` . . .
.. . . . . . . . , , . , . -. .. `.
;.. ~ .. . . i, ., .~, ... .
i, 10~2637 A-1386g 1 I Steel drums were generally the first success~ul drum utilized ~or purposes of handlingJ storing, and transporting . , ~ bulk quantities of materials, for example, quantities of ¦ material, on a volume basis, on the order of at least about , 30 gallons and more typically on the order of about 50 to 60 ¦¦ gallons. The drum most commonly employed has a nominal volume ¦ of approximately 55 gallons. Because o~ the long and wide ~ spread usage o~ steel drums conventional mechanical equ~pment ¦ has been developed to handle them. This equipment for handling ¦ steel drums may be divided into two general categories One `~ ! o~ these categories is equipment generally designed to handle steel drums along the rolling hoops which are provided in the sidewalls of the drum. The other category of standard equipment which has been developed is generally referred to as ~ 15 !l steel drum chime-handling devices; these devices are adapted J~ 1,' to handle the drum by gripping the upper chime thereof These ' steel drum chime-handling devices generally take the form of I having a hook or claw which grips the chime for appropriate 3 movement and transportation. In the art these types of ¦ chime-handling equipment are variously re~erred to as parrot-~ ¦ beak devices, or occasionally as a cherry picker, chime J ¦ grabbers, and hand trucks. The former type o~ chime-handling j~ device, i.e., a parrot-beak, or cherry picker is represented ! by the device sold by Little Giant Company under the ll designation "Grip-O-Matic". This device in addition to a lower anti-pivot support surface includes two opposed movable jaws, ¦ or beaks, which when brought into contact with a chime are 28 adapted to open so as to allow them to be positioned with the 1. 1 lj - 2 - ~
.. , , I
~1 I
~, I
. 1062637 A-13~69 1 1 chime between them and, upon lifting of the drum, the chime is ¦ lockingly gripped between the jaws or beaks allowing convenient movement and transportationj these aaws then automatically ' release as the drum is set down in its desired location. As is ¦
, the case with a parrot-beak the other steel drum chime-handling devices likewise employ beaks, or ~aws, or hooks, to exert a localized force on the chime which allows for the steel drum to be tilted and appropriately moved. Because the steel drum I handling devices have been standardized for steel drum move-ment they generally function well for their intended purposes.
More recently, however, freestanding tight-head ~ plastic drums have been made avai]able but unfortunately these ;' ~ drums have not yet obtained their full potential. It will be , appreciated that such drums, and especially those which are ~ molded as a single piece article offer many highly desirable characteristics. Some of these desirable characteristics include, for example, low price, low shipping costs, a wide scope of product applications without the need for liners, ` ;~ high resistance to the detrimental influence of weather, 3 20 l lightweight, rust resistance, dent resistance, and in general they are highly aesthetically pleasing. A primary deterrent to the wider acceptance and usage of freestanding plastic , ll drums, and especially tight-head plastic drums which are , molded, for example blow molded, as a single piece article has ~i largely been that conventional steel drum chime-handling ¦, devices cannot conveniently and interchangeably be employed ' li with plastic drums and steel drums for movement and expeditious 28 1 handling of both. Thus there is a problem which needs a : 1 ! ¦
106Z637 ( ~ A-1~869 1 solution and a need exists in the art for providing a plastic drum having all the desirable characteristics indicated above which drum can also be handled for movement and transportation with conventional steel drum chime-handlin~ devices. This 1l need, and the solution of this problem, is especially acute with regard to tight-head plastic drums which are ~ormed by blow molding as a single piece article and are fabricated ' ;,! entirely of the same material. These tight-head, single piece rnolded plastic drums have all of the desirable characteristics indicated above and furthermore they are conveniently and economically produced by a blow molding operation, for example, in an operation wherein a tubular member is blown to the ¦I desired drum configuration.
j ¦I Thus it becomes the general object of this invention -1 15 1~ to provide for a tight-head plastic drum, especially one which ! is molded as a single piece, which can be handled with ¦ conventional steel drum chime-handling devices and especially parrot-beak devices. This is generally accomplished by ~, providing a receptacle assembly, i.e., a receptacle which is il 20 ¦ put together, or assembled, from two completed units, namely 1 ll a prefabricated tight-head drum~ especially one molded as a single piece article, and an attachment, or fitment~ which is ~' grippable by steel drum chime-handling devices, e.g. parrot-, 1l beaks. The attachment is put on, the prefabricated tight-head drum in a durable manner concentrically about the drum and is substantially circumferential, thereby distributing the load on the drum over a wide area and alleviating problems with breakage or rupturing of the drum proper. Additionally in 29 ~ passing it should be mentioned that the fitment, or attachment, ,. I,, ~, ; ~ -4 106Z637 ~ 869 l ¦l is so located on the drum and so arranged and constructed that ~, the strong localized gripping forces exerted by the chime-li handling devices, for example the pinching and gripping forces ! exerted by the edges of opposed beaks of parrot-beak devices, ~ are not localized on the plastic drum proper This is a highly advantageous feature of the present invention in that, should a weakness develop at the points of contact by the jaws or beaks of the chime-handling devices, the potential puncturing, will be of the fitment, or attachment, itself and not a puncturing of the drum with the unacceptable exposure of the contents. This protection against drum puncturing and exposure of the contents is attained by use of an attachment, ~3 I or handling means, which is independent and separate of the plastic drum per se and of any means used to attach a head to 1 a body to form a plastic drum. Other highly desirable features which are provided by this invention are that the receptacle 1 assemblies can be easily stacked and the provided handling ~ means functions in the manner of a shock absorber to substant-3, 1~ ially eliminate possible damage to the drum proper ~ Additionally in a highly important embodiment the handling ~1~ 5 means are removably assembled onto the drum; thus should damage result to the handling means, as for example might occur when it absorbs a strong sudden force, such damaged means can be easily separated from the assembly and the drum salvaged.
$ 25 I This interchangeability of parts of course provides for great ~ 26 I economic premiums. In another important embodiment of this .
,.~. l ,,~, , ~ ` ~
_ ~ _ !!
1 1 invention the receptacle assembly is provided with a drainage feature to prevent the accumulation of liquids befween the drum proper and the handling means; the desirability, safety ¦l and advantages of such a drainage feature will be readily I apparent to those skilled in the art.
3 Gebrauchsmuster 74 120 47 contemplates a drum in which injection molded rings are inserted during a drum molding operation. There is no reco~nition however in the German ~ Gebrauchsmuster 74 120 47 of an assembly as contemplated herein ¦ wherein handling means are assembled to an already formed plastic drum. The difficulties of inserting rings into the mold during blow molding will be readily apparent to those skilled in the art as well as the deficiencies thereof such as, ¦ for example, a longer blowing cycle which greatly increases 1l the costs of the final drum. Similarly, because of the 1 jl permanent attachment of the rings interchangeability of parts 1 3 iS not possible. Another drum of the prior art involves formation by a method whereby a body and lid are formed ~` i separately and then joined by spin welding in order to form a I sealed tight-head drum. As will be readily apparent these . 3 drums are not entirely satisfactory since they are subject to leakage at the seams. Furthermore the attempted gripping of l the top of such drums such as, for example, by a parrot-beak .1 3, device causes a situation wherein the localized ~orces of the I opposed edges of the beaks of such a device may cause the drum itself to puncture thereby exposing its contents.
j Proposals have also been made in the prior art for ¦~ employing a small flexible loop, or a receptacle, associated 29 1 with the bung to allow, for example~ the hook of a hand truck ` ~, -6-.' 131 1 1~62637 A-13859 l ¦, to engage same. See U S. Patent No. 3,8~9~839. Neither of these proposals are satisfactory because the loop and receptacle~
are not concentrically disposed about the drum coaxial with ! the drum axis to allow an approach thereo~ t:nrough substantially ,~ 360 and likewise these proposals result in the exertion of severe forces on small localized areas which makes the bung ~ highly susceptible to rupture and puncturing.
¦ German Patent No. 2,008,111 and U. S. Patent No.
3,851,788 discloses plastic drums but they have no recognition ¦ of an assembly as contemplated herein using an attachment which is grippable for example by a parrot-beak device and ¦ wherein such gripping does not cause any dangers to puncturing , j of the drum proper.
; ¦! U. S. Patent No. 1,909,028 relates to a metallic 1l shipping and storing vessel which has protective rings or bumpers retained in permanent engagement with the vessel. The ¦I rings have an annular portion to facilitate grasping and are provided with safety features for handling with the palms of the hands. There is no description of the present invention i therein nor of the many attributes thereof as mentioned above.
Thus, in accordance with one feature of this invention ¦ there is provided a receptacle for the storage and handling of bulk quantities of material, e.g. greater than about 30 ;l I gallons and typically between about 50 to about 60 gallons, ~ which receptacle is assembled, or put together~ from a prefabricated, freestanding tight-head plastic drum and 27 prefabricated handling means. Most desirably the drum is ~;
,., I' ., I ~
,. ~06Z637 A-138~9 1 l, molded as a single piece artic:Le for example by blow molding from a tubular member. The handling means is concentrically ¦~ and tightly assembled to the drum coaxial with the drum axis ' and is so arranged and constructed as to be grippable by steel I drum chime-handling devices, especially parrot-beak devices, ¦ to enable manipulation and transportation of the receptacle in a substantially upright position. Desirably the handling means and the drum will be provided with a substantially , circumferential, horizontally disposed jog providing for I inter-engaging surface portions. While the inter-engaging surfaces provided by the respective jog may respectively project or extend, outwardly, i.e., away from the longitudinal axis of the drum, or inwardly, i.e., toward the longitudinal axis, it is generally pre~erred that the inter-engagable surface I included in the drum be recessed~ or indented, i.e., inwardly projecting, and the handling means inter-engagable surface also pro~ect inwardly. Additionally in order to provide a safer, ; cleanable receptacle, means are provided elther integral with ¦' the drum or the handling means, or both, which are adapted jl and constructed to prevent the accumulation of liquids between ¦, the steel drum chime-handling means and the drum. According j ¦~ to an especially important embodiment of this invention the handling means will be removably assembled to the drum thereby allowing ~or the interchangeability o~ various drums and the ~l handling means. Maximized bene~its of the assemblage will be ¦, obtained when the handling means projects upwardly sufficiently ¦
l' so that at least an upper margin thereof lS generally at least 28 1, flush with the upper surface of the drum, i.e., at least an .. I, I
sl ! 1 . I I
~ , - 8 -~., l ~i i ~06Z637 upper marginal portion of the handling means ~ill be in a plane which LS at least coincident, or above; a horizontal plane defined .
by the upper margi`n of the drum. In tfiis ~ay stacking is facili-tated and the bung area protected. In another preferred embodi-ment of the Lnvention tfie abo~e referred to handling means would .; generally be disposed at an upper portïon of the receptacle and a similar member will be generally disposed adjacent the bottom of thç drum which will allow and facïlïtate hand rolling of the drum when in an upright position and improve the stability and strength of the drum, for example, upon the receptacle being drop-ped, and likewise will allow for the gripping and handling of the drum by steel drum chime-handling devices when in an inverted position. Advantageously means are provided for tensioning the handling means to bring the latter into tight holding engagement ;
with the drum and preferably the means will be releasable.
Thus, in accordance with the present teachings, a plastic drum assembly is provided which comprises a single piece 'l :
blow molded plastic drum which has a top end panel, a bottom end , panel and a circumferential sidewall which joins the top and . .
bottom end panels with the top end panel defining at least one - opening therethrough. The sidéwall includes a horizontal circum-ferential recess adjacent the top end which has a substantially semi-circular cross section and at least one arcuate substantially verical drain chennel formed in the surface of the recess. A
split metal collar is provided mounted on the drum which has a vertically disposed wall portion which includes a substantially circumferential inwardly extending projection adjacent the lower ~ margin of the vertically disposed ~all portion with the inwardly ;i extending pro j ection having a substantially semi-circular cross i 30 section positioned within an in snug contact with the recess. The metal collar further ïncludes a su~stan*lally cïrcumferentïal , .. .
rolled annular bead which i5 di..~po~ed adjacent the upper margin of the.ver~ï.cally disposed porti.on wit~.the annular bead being located above the top e.nd whereby the me.tal collar and the drum are movable by chime-gri.pS~ing drum handling devIces.
. In accordance wïth.a further teaching, a plastic : drum assem~ly i.s provï.ded for the storage, handling and shipment of materials whi.ch.assembly comprises, in com~ination, a single piece molded plastic drum which has a top end panel, a bottom end panel and a circumferential sidewall merging with the top and .
. 10. bottom end panels wi.th the top end panel defïning an opening.
The circumferenti.al sidewall includes a circumferential indenta-. tion adjacent the top end panel with a circumferentiallv dis- ;
~ posed collar removably assembled to the drum. The collar is :: adapted for gri.pping at its upper edge by steel drum chime-handling devices about substantially the full 360~ of the circum-, ference and has an inwardly disposed circumferential projection ~ at its lower edge with the circumferential projection engaging : the circumferential indentation to retain the collar on the :I plastic drum. ~ .
' 2Q By yet another embodiment, a plastic drum assambly for the storage, handling and shipment of materials is provided with the assembly comprising, in combination, a ~;.
single piece molded plastic drum which has a top end panel, a bottom end panel and a circumferential sidewall which merges with the top and bottom end panels with the top end panel dein- :
ing an opening. The circumferential sidewall includes a circum-ferential indentation adjacent the top end panel, at least one channel formed in, and transverse to, the circumferential indenta- :~
tion for drainage of liqui.ds from the top end panel whilst the ~ 30 drum is in an upright posi.tion. A ci.rcumerenti.ally disposed collar i.s provided removably as-s-em~led to the. drum, the collar has at ï.ts upper e.nd an annular ~ead adapted for grïpping the ,,.~ ~ .
i'~ ' ` ,, ,` -9a-:- .. . .
. - ~ , . . ' . ~ ,:
steel drum chime-handling devices ahout s.ubs.tanti.ally the full 360 J of the circumferen.ce. An ïnwardly-disposed cïrcumferenti.al projection i.~ provi.ded at the lower edge which.projection engages : the circumfere~tial mdentation to retain. the collar on the plas-tic drum. The collar above the circumferential projection is out of contact with the plastic of t~e drum and being spaced apart from ~ut confronting t~e drum sidewall. .
Referring to the drawings:
Figure 1 is a side view of a plastic drum having :~ lQ upper and lower handling means assembled thereto;
Figure 2 is generally a top view of the drum .. and handlïng means assembly;
Figure 3 is a fragmentary sectional view taken along line 3-3 of Figure 2 more clearly showing portions of the . handling means and drum and illustrating a drainage channel;
Figure 4 is a fragmentary sectional view taken :, along line 4-4 of Figure 2;
., '~
.:1 20 : . .
:, .
. j .
. ~ .
:~ ' ....
-2b-; .
, ~ .
.
_ !
lO~;ZG37 ~ ~
1.; 1 1 Figure 5 is a fragmentary sect:ional view taken along ' line 5-5 of Figure 3 more clearly showing a drainage channel;
Il Figure 6 is generally a partial side view more clearly .. , 'i indicating the handling means and adjustable means for ,~ tensioning the handling means, Figure 7 is a fragmentary sectional view of a bottom ¦ portion of the receptacle assembly;
Figures 8 and 9 are fragmentary sectional views showing an alternate embodiment of the invention, 10 ¦ Figures 10-12 illustrate a further embodiment of the I invention.
; Referring now more specifically to Figures 1-7 it will be seen that the plural part receptacle as~embly of this ~ invention comprises a drum 2 which drum includes at the upper 15 1~ portion thereof means~ e.g. a collar 4, so arranged and i constructed as to be grippable by steel drum chime-handling , devices. Similar]y, the drum includes at the bottom portion I thereof means, illustrated as a collar 6 grippable by steel ~ li drum chime-handling devices when the drum is in an inverted 1 20 ~I position and which means serve to allow for rolling of the drum when it is in a substantially upright position. Drum 2 is a tight-head drum formed as a single piece article by a ¦ blow molding operation. Subsequent to the formation of this tight-head dru~, collar 4, and if desired collar 6, is 25 ! subsequently assembled onto drum 2 to form the plural part assembly. Drum 2 is substantially cylindrical in shape and 27 1' comprises a generally circumferential sidewall 8 which merges, ',1 i, ~
.'. 1, .
I, - 10 -' 1 ¦, with a slight taper, at its lower portion with bottom end 10.
¦ At its upper margin circum~erential sidewall merges~ again ¦l with a slight taper, with the top end of the drum, generally ~l designated 11. Top end 11 includes a generally raised panel ,~ portion 12, which serves as a supporting surface, and merges ~¦ with generally depressed sections 13 which include at least l~ one, and preferably two diametrically opposed, upwardly extending tubular projections 14 which tubular projections ¦ define an opening into the internal zone of drum 2, i.e., ¦ tubular projection 14 defines a bung hole opening into the drum. In the preferred mode of practicing this invention the ¦ tubular pro~ection will of course be provided with suitable ¦ closure means which are not shown but which are conventional ' and well known in the art. Generally lt is pre~erred that the - 15 i upper surface of tubular projection 14 and the upper surface ! i of panel 12 be generally in about the same horizontal plane.I! Sidewall 8 at a location adjacent top end 11 is provided with Il a substantially circumferential generally horizontally disposed `~ ~' jog, illustrated as inwardly projecting arcuate surface portion I ? ~ 15, Pre~erably the circum~erential surface portion 15 will -~ I be located about 1-3 inches below depressed section 13. As indlcated arcuate projecting surface 15 is an inwardly ¦l projecting, or extending surface, or recess, but as will be apparent it could likewise be an outwardly projecting, or ~l outwardly extending, surface. Similarly, drum sidewall 8 adjacent bottom end 10 is formed with a jog, shown as an inward-~ ly projecting arcuate surface 15'. As will be seen 28 1, substantially circumferential projecting surface portion 15, - 11 _ , , ~, ,, 1 106Z637 A~13869 1 ~l and for that matter 15', are adapted to inter-engage in a 1 nesting manner with surfaces provided on collar 4 and collar 6 !I respectively In a preferred mode drum sidewall 8 also l~ includes outwardly projecting ribs 16 which function in the ll manner of rolling hoops. Additionally, and as best seen in Figures 4 and 5~ drum sidewall 8 is preferably provided wi~h means for preventing the accumulation o~ liquids between collar 1 4 and drum 2. These means may take the form of at least one ¦ drainage channel 17 integrally ~ormed in projecting sur~ace 15 ~ in the manner of a dimple-like channel. Preferably, a ¦ plurality of drainage channels will be employed which are ¦ substantially uniformly distributed along the circumference of projecting surface 15. If desired circumferentially disposed inwardly projecting surface 15' may be provided with similar , channels.
After providing the primary element, i.e., the drum, I a secondary element is then put on, or assembled to, the drum j~ to provide the handling means for the assembly. The handling ¦, means are so arranged and constructed as to be grippable by 1 steel drum chime-handling devices, and especially the opposed jaws of parrot-beak devices, to enable manipulation, movement J and transportation o~ the receptacle assembly, notably drum 2, I in a substantially upright position. Hignly advantageously ¦~ the handling means are removably attached, i.e., not bonded, 1l to the drum so that the handling means can be removed withoùt significant structural drum damage as otherwise would result ~ if attachment was permanent as with rivets, or chemical bonds 28 ii produced by adhesives or spin welding. In the preferred ~ I ~ 12 -I, 1062637 A-13869 embodiment collar 4 is shown as a removable split collar and ll means are provided, which can be released a-nd adjusted for ; ~I tensioning the collar into holding relationship with drum 2.
i It will be apparent that a substantially continuous removable ~I collar could likewise be employed with the collar being brought into snug tight holding engagement with the drum by press fitting. Thus, as seen in the drawings collar 4 is a split collar and is concentrically and coaxially assembled about the longitudinal axis of drum 2. Collar 4 is generally I axially elongate and includes a substantially circumferential ¦ vertically disposed wall 18 which merges at a lower margin ¦ thereof with circumferential horizontally disposed jog illustrated as an inwardly extending projection 19 of arcuate configuration. Collar 4, in addition to drainage channels 17 ~, of drum 2, or in lieu thereof, can include at least one ; I drainage channel 20, and preferably a plurality of drainage channels in a uniform array, to prevent the accumulation of liquids between collar 4 and drum 2c For convenience drainage channel 20 is only illustrated in Figure 3. As seen channel 1 20 is preferably formed adjacent, i e. near or at, the junction I of wall 18 and projection 19. Vertical wall 18 merges at an i upper margin thereof with a portion so arranged and ! constructed to be grippable by steel drum chime-handling devices ;~ , so as to allow movement and transportation of the receptacle.
; 25 In a preferred embodiment this portion is a chime or bead-like configuration 21. As will be apparent the opposed jaws of parrot-beak devices will holdingly grip the collar with one 28 ' jaw engaging the inside surface of wall 18 and the other jaw ~.
1 engaging the outer underside surface of bead-like portion 21.
In effect that underside surface is a ledge which provides a ' surface which is inclined relative to the longitudinal axis ,, of the drum so that one of the jaws can securely grip same.
1¦ Any suitable configuration such as, for example, the project-¦ ions provided by a denticulated upper surface portion of I ¦ wall 18, may likewise be employed so long as it satisfies its ; ¦ purpose of being grippable by steel drum chime-handling devices, I especially the jaws of parrot-beak devices.
Means, best seen in Figure 6, are also preferably provided for tensio~ing collar 4 to bring it into engagement with drum 2 so as to maintain attachment of collar 4 to drum 2 during use. One suitable approach is to employ a set of such means axially displaced on the external surface of wall 1~
: 15 ¦ respectively near the top and bottom of collar 4. Near opposed edges 22 of the opening in split collar 4, wall 1~ carries both at a lower location and an upper location opposed and l I aligned tubular bushings 23 and 23 t ~ at least one of which ; , (23') is internally threaded, through which a screw generally ¦ designated 24, passes. Thus a tightening of the collar to the l ¦ drum is effected by tightening the screw 24, and removal of ; I collar 4 can be effected by a loosening or release of screw 24.
, Another suitable approach is to locate such means on the externally disposed surface of inwardly extending projection 19 of collar 4, i.e., in the open concavity of the embodiment .~ ~ illustrated in Figures 1-6. Further durability can be obtained by using a small rod (not shown) which is inserted in ~ ' ~
, ,.
~ ~0~2637 ~-13869 , .
1 il the opening of the bead-like ~rippable portion 21 illustrated in Figures 1-5~ which rod spans the opening between opposed ~i edges 22 and crimping portion 21 into engagement with the rod.
- ¦l In the preferred embodiment collar 4 is of a !I sufficient height such that its upper margin proceeds upwardly ¦¦ sufficiently to be at least about flush with, and desirably ¦ slightly above, the upper margin of tubular projections 14.
¦ In this way stacking is facilitated and the projections 14 j protected from damage. Additionally it should be noted that ¦ the portion, e.g. bead-like portion 21, of collar ~ which is grippable by parrot-beak chime-handling devices is not part ; I of the drum per se and so arranged and constructed such that the jaws thereof do not exert their strong localized pinching ;~ ~ forces on the drum, thus precluding the unacceptable ¦ possibility of puncturing the drum. In the preferred embodiment collar 4 is a metal collar having a wall thickness of at least about 0.04 inches, such as, for exa~ple, sheet metal, like 16 or 18 gage low carbon sheet rolled steel.
¦¦ A blow molded single piece drum of high density ¦I polyethylene having a nominal capacity of 55 gallons of the type described was tested with water. The split collar 4 was formed from 18 gage low carbon cold rolled sheet steel and the inwardly extending concave projection 19 was approximately semi-circular with a radius of about 3/8 o~ an inch.
¦1 Approximately the same radius was used for the drum indentation , 15. Tensioning of the collar was effected with 5/16", 18 ', 27 ¦1 threads per inch screws (24 ) which were tightened to a torque $' 1~
.,. 1~
- ~ 15 i.
-j~
~ i ~06Z637 A-l386g !i f about lO0 inch x pounds. The water filled receptacle !~ assembly showed good handling characteristics when moved and i handled with a parrot-beak chime-handling device. Generally it is desirable to use a drum wall thic~ness of at least about 1 0.125" most desirably between about 0.130 to about 0.150".
¦ Figure 7 illustrates the general configuration of the ¦ lower portion of the drum wherein handling means are likewise provided which handling means are grippable by steel drum chime-handling devices when the drum is in an inverted position and which handling means likewise provides a surface upon which the drum may be hand rolled when in a substantially upright position. As seen in Figure 7 sidewall 8 includes a 1 I circumferential, generally horizontal inwardl~ projecting ; ¦ arcuate surface 15'. Collar 6 includes a vertical wall 18~
! which merges at its lower margin with a grippable chime~ e !I projection 21~, The lower portion of collar 6 will generally be about flush with the bottom of the drum. The upper margin of wall 18' generally merges with a jog shown as an inwardly li extending arcuate projection l9', with the inwardly extending 1¦ projection l9i of collar 6 being in inter-engaging relation-ship with the corresponding inwardly extending arcuate ¦ projection 15' of drum 2, Collar 6, like collar 4, may be continuous or split and may be assembled to drum 2 in the manner described with regard to collar 4. Collar 6 may likewise ~ 25 ¦I be provided with an appropriate drainage channel to prevent ; ¦i the accumulation of liquids between the drum 2 and collar 6, ¦I such as f'or example as may occur when the drum is stored in an inverted position. Additionally if desired lower Il circumferential inwardly projecting surface 15' may if desired 1l be provided with a drainage channel, or channels, in the 31 1' manner of channel 17.
. i ~ I - 16 -l ~ ( i 1062637 A-13869 1' ~
1 In ano-ther embodiment of this invention fragmentarily ¦
illustrated in Figure 8, sidewall 8' of drum 2 is provided with horizontally disposed circu~ferential jog illustrated as an outwardly projecting sur~ace 15" and assembled thereto ,~ is a collar 4'. Collar 4' includes a vertical wall 18"
which merges at its upper margin with a grippable portion, such as bead-like portion 21" and wall 18" merges at its lower margin with an outwardly proJecting portion lg~r~ Projecting I surface 15" of the drum and the projecting sur~ace 19" of ; ' the collar are in a snug inter-engaging relationship.
¦¦ Contacting collar 4' and, more specifically, contacting j projecting surface 19" is a tension band 25, which in the l~ preferred embodiment will be a removable tension band.
; l¦ Exemplary of such a tension band is a conventional ring ~ employed on open head fiber drums for securing the head to ¦I the body. As with the preferred embodiment previously described above, with respect to Figures 1-5, it is preferred that collar member 4' extend sufficiently upwardly such l~ that its upper margin is at least about flush with the !` upper margins of the tubular projections which define i the bung openings. As previously indicated either the drum or the handling means, or both, may be provided with an appropriate drainage channel for preventing , the accumulation of water between the handling-means and the ; 25 ~I drum. In Figure 8, while it will be apparent that, preferably, ~, 26 a plurality will be employed, one drainage channel to .~' i ;. ,, '' ~', ~,.
!
i:
` - 17 -!
!l l A-13869 ' ~062637 1 l~ accomplish that purpose is shown by the dotted llne 17", which channel is formed in projection 15".
l, The fragmentary view of Figure 9 represents still i an alternate embodiment of this invention showing the drum l sidewall 8' as likewise being provided with a substantially circum~erential outwardly extending sur~ace, portion 15".
To the drum, as before, there is then assembled appropriate handling means. Here the handling means illustrated has a convex outwardly projecting portion 32 which inter-engages with projectlon 15" on sidewall 8', preferably in a forced, or interference, fit manner and projecting portion 32 merges with a first leg portion 26 shown here in substantially intimate contact with sidewall 8' First leg portion 26 then merges with an outwardly extending shoulder portion 27, i shoulder portion 27 in turn merging with a second leg portion 28 which in turn merges with an upper laterally projecting portion 29 so arranged and constructed as to allow steel I drum handling devices, for example, a parrot-beak device, to : 1~ grip same to allow movement and transportation of the drum.
1i The under surface of the laterally projecting portion 29 ¦¦ provides a ledge to facilitate secure gripping by the jaws of , a parrot-beak device. A tension band 30 will be employed to help retain the handling means in tight holding engagement with the drum. As shown tension band 30 is disposed in the , reentrant zone defined by a portion of projection 32, ¦~ shoulder 27, and ~irst leg portion 26. In order to prevent the accumulation of liquids between the drum and the handling ' means illustrated in Figure 9 a channel for drainage~ such .J 29 as that indicated as 31, generally formed in shoulder 27, ., I .
, , 1~62637 A-1~869 1 l may ~,e employed As indicated hereinbefore pre~erably a plurality of such channels will be distributed in a uniform , circumferential pattern on the handling means. As ~ contemplated in Figure 9 the handling means for the drum need 1~ not extend sufficiently high to be at least flush with upper margins of the drum. It will be noted however that the lakerally projecting portion 29 is sufficiently removed from the drum so as to allow parrot-beak jaws to pinchingly and grippingly engage the handling means without danger of such ; 10 engagement with the drum, or drum wall~ thereby precluding ; ¦ any possibility of puncturing the drum by the strong localized forces exerted by such jaws.
In passing it should be mentioned that preferably the inter-engaging jogs of the handling means and drum will ¦Z be disposed at a location on the sidewall which is below~
¦ e g. 1-3" beneath, what may be viewed as the annular edges of ¦Z the drum. In this way the forces exerted on the handling Z 1I means during handling and stacking of the drums will be ' uniformly distributed along a strong large section o~ the drum. Further, as indicated in the preferred embodiment~
the handling means is at least flush with the upper margin of the drum top thus providing additional protection for ¦I the drum. Both of these characteristics result in extremely desirable drop and impact test results.
llReferring now to Figures 10-12 another embodiment is illustrated. As seen in Figure 10~ a single piece blow 27 molded plastic drum 2 is provided which drum has a .; i.
, l' `~ 1 I' ~062637 A~1~869 circumferent:ial sidewall 45 which merges at its lower margin wîth a bottom wall 46 and at its upper margin with a top wall generally designated 47 Top wall 47, not unlike the ,~ previously described embodiments,includes an upwardly extending ¦
- 5 ¦ panel 48 and depressed sections 49. Depressed top section 49 - ~! includes at least one and preferably two diametrically opposed tubular projections 50 which serve to define the bung I openings into the drum. Sidewall 45 preferably also includes ¦ two axially displaced integrally blownprojecting ribs 51 which 1 function as rolling hoops for the drum. The drum will most advantageously be formed of high density polyethylene. The ¦ upper portion of sidewall ~5 is generally of a substantially joggled configuration, i.e., a configuration having a plurality o~ integral circumferentially disposed outer surface 1I portions 52 interspersed with a plurality of integral inwardly extending cavities 53. These cavities are arranged and constructed to provide hand grips on the drum and also serve to allow drainage of liquids. Substantially circumferentially ~ about the drum, outer surface portions 52 of sidewall 45 are I provided with an array of inwardly extending surface portions, !i or recesses 54 which are aligned at the same height on the ; I drum. The assembled handling means grippable by chime-handling i devices is illustrated as a continuous ring 55 tightly, e g.
~ by a press fit, engaging the recess array 54. In the ~ embodiment illustrated inwardly extending cavities 53, and inwardly extending, projecting surfaces 54 along with ring 55 are so proportioned and arranged as to allow a steel drum 28 i chime-handling device, such as for example a parrot-beak device, .,, ,, i .
,' i'.
~ - 20 -" j, !
1,, 1 ~ .
I 1 ! to contact the externally disposed surface of ring 55 and then move into locking and gripping relationship with the ring for movement and transportation of the receptacle. That is, ~l generally the radial distance between the internally disposed ~, surface of ring 55 and the externally disposed surface of cavities 53 will be sufficient to allow the jaws of such . ( devices to enter and grip the ring for movement and I transportation of the drum without the jaws exerting any penetrating type pinching force upon the plastic drum itself, While the handling means of Figures 10-12 is shown as a .` ¦ simple ring which is arcuate ln cross section it will, of j course, be readily apparent great variation is possible, . 1l For example, the ring may take the form of a collar like that previously discussed, and the releasable mechanical means previously described for tensioning a collar may be employed.
_ 1.
: 1~
~t i . .
1 l ¦ ~ .
.~
~' 11 Il - 21 -, 11
Claims (23)
1. A plastic drum assembly comprising a single piece blow molded plastic drum having a top end panel, a bottom end panel, and a circumferential sidewall joining said top and bottom end panels, said top end panel defining at least one opening therethrough, said sidewall including a horizontal circumferential recess adjacent said top end having a substantially semi-circular cross section and at least one arcuate substantially vertical drain channel formed in the surface of said recess and a split metal collar mounted on said drum having a vertically disposed wall portion including a substantially circumferential inwardly extending projection adjacent the lower margin of said vertically disposed wall portion, said inwardly extending projection having a substantially semi-circular cross section positioned within and in snug contact with said recess, said metal collar further including a substantially circumferentialrolled annular bead disposed adjacent the upper margin of said vertically disposed wall portion, said annular bead located above said top end, whereby said metal collar and drum are movable by chime-gripping drum handling devices.
2. The plastic drum assembly of claim 1, wherein said circumferential sidewall includes an additional circum-ferential indentation adjacent said bottom end panel and an additional split cylindrical metal collar removably assembled to the bottom end of said plastic drum, said split metal collar having a circumferential rolled rim at its lower edge engageable by chime-handling devices and an inwardly disposed circumferential projection engaging said additional circumferential indentation to retain said additional split metal collar on said plastic drum, and fastening means on said additional split metal collar for removably mounting said additional split metal collar on said plastic drum.
3. The plastic drum assembly of claim 1, wherein said split metal collar is slit vertically and has movable first and second ends, said fastenings means comprising at least two fastening assemblies vertically spaced and joining said first and second ends, whereby said first and second ends may be moved toward and away from each other while remaining in parallel alignment.
4. The plastic drum assembly of claim 1, wherein said top end panel includes an upwardly directed cylindrical portion circumjacent said opening, and said split metal collar extends upwardly at least as high as the upper extremity of said upwardly directed cylindrical portion.
5. The plastic drum assembly of claim 1, wherein said plastic drum and said split metal collar each include inter-engaging nesting surfaces.
6. The plastic drum assembly of claim 1, wherein said circumferential sidewall includes at least one outwardly projecting rolling hoop.
7. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combi-nation, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one substantially vertically disposed arcuate channel formed in said circumferential indentation for drainage of liquids from said top end panel, and a split cylindrical metal collar removably assembled to said drum, said split metal collar having a rolled rim at its upper edge for engagement with chime-handling devices and an inwardly disposed circum-ferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, and fastening means on said split metal collar for removably mounting said split metal collar on said plastic drum.
8. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combina-tion, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining at least one opening therethrough and said circumferential sidewall including a horizontally disposed circumferential indentation adjacent said top end panel and a split cylindrical metal collar removably assembled to said drum, said collar having a substantially circumferential rolled rim adjacent the upper margin, engageable by chime-handling devices, a vertical sidewall and a substantially circumferential inwardly disposed projection adjacent the lower margin engaging said indentation, said collar also including at least one drainage hole located generally at the intersection of said inwardly disposed projection and said vertical sidewall of said collar, whereby liquid collecting on said top panel and within said collar are drained therethrough.
9. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combina-tion, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining at least one opening therethrough, said circumferential sidewall including a circumferential projection adjacent said top end panel, and a split cylindrical metal collar removably assembled to said drum, said split collar having a rolled rim at its upper edge for engagement with chime-handling devices, a vertical sidewall, an outwardly disposed circumferential indentation at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, at least one drain hole located generally at the intersection of said vertical sidewall and said outwardly disposed circumferential indentation, and fastening means for removably mounting said split metal collar on said plastic drum.
10. The plastic drum assembly of claim 9, wherein said circumferential sidewall includes an additional circum-ferential projection adjacent said bottom end panel and an additional split cylindrical metal collar removably mounted on the bottom end of said plastic drum, said split metal collar having a circumferential rolled rim at its lower edge engage-able by chime-handling devices and an outwardly disposed circumferential indentation at its upper edge, said additional circumferential projection engaging said circumferential indentation to retain said additional split metal collar on said plastic drum, and fastening means on said additional split metal collar for removably mounting said additional split metal collar on said plastic drum.
11. The plastic drum assembly of claim 9, wherein said circumferential sidewall includes at least one outwardly projecting rolling hoop.
12. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, and a circumferentially disposed collar removably assembled to said drum, said collar being adapted for gripping at its upper edge by steel drum chime-handling devices about substantially the full 360° of the circumference, and having an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum.
13. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combina-tion, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circum-ferentail indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar being adapted for gripping at its upper edge for engagement with chime-handling devices about substantially the full 360°
of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
14. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combina-tion, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circum-ferential indentation adjacent said top end panel, and a split circumferentially disposed collar removably assembled to said drum, said split collar being adapted for gripping at its upper edge by steel drum chime-handling devices about substantially the full 360° of the circumference,and an inwardly disposed circumferential projection at its lower edge, said circumferen-tial projection engaging said circumferential indentation to retain said split collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
15. A plastic drum assembly for the storage, handling and shipment of materials, said assembly,comprising, in combina-tion, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circum-ferential indentation adjacent said top end panel, at least one channel formed in,and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a split circum-ferentially disposed collar removably assembled to said drum, said split collar being adapted for gripping at its upper edge for engagement with chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferen-tial projection engaging said circumferential indentation to retain said split collar on said plastic drum.
16. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece blow molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one substantially vertically disposed arcuate channel formed in said circumferential indentation for drainage of liquids from said top end panel while said drum is disposed in an upright position, and a circumferentially disposed split metal collar removably assembled to said drum, said split metal collar having a rolled rim at its upper edge for engagement with chime-handling devices and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split metal collar on said plastic drum, and fastening means on said split metal collar for removably mounting said split metal collar on said plastic drum.
17. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel drum chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said cir-cumferential indentation to retain said collar on said plastic drum.
18. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel chime-handling devices about substantially the full 360° of the circumference,and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circum-ferential indentation to retain said collar on said plastic drum said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
19. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, and a split circumferentially disposed collar removably assembled to said drum, said split collar having at its upper edge an annular bead adapted for gripping by steel drum chime-handling devices about substantially the full 360°
of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split collar on said plastic drum.
of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split collar on said plastic drum.
20. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a split circumferentially disposed collar removably assembled to said drum, said split collar having at its upper edge an annular bead adapted for gripping by steel chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said split collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
21. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel drum chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential pro-jection at its lower edge, said circumferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
22. A plastic drum assembly for the storage, handling and shipment or materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, at least one channel formed in, and transverse to, said circumferential indentation for drainage of liquids from said top end panel while said drum is in upright position, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel drum chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circumferential projection engaging said circum-ferential indentation to retain said collar on said plastic drum, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
23. A plastic drum assembly for the storage, handling and shipment of materials, said assembly comprising, in combination, a single piece molded plastic drum having a top end panel, a bottom end panel and a circumferential sidewall merging with said top and said bottom end panels, said top end panel defining an opening, said circumferential sidewall including a circumferential indentation adjacent said top end panel, and a circumferentially disposed collar removably assembled to said drum, said collar having at its upper edge an annular bead adapted for gripping by steel drum chime-handling devices about substantially the full 360° of the circumference, and an inwardly disposed circumferential projection at its lower edge, said circum-ferential projection engaging said circumferential indentation to retain said collar on said plastic drum, said annular.
bead being disposed in substantially the same horizontal plane as said top end panel, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
bead being disposed in substantially the same horizontal plane as said top end panel, said collar above said circumferential projection being out of contact with the plastic of said drum, and being spaced apart from but confronting said drum sidewall.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63627275A | 1975-11-28 | 1975-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1062637A true CA1062637A (en) | 1979-09-18 |
Family
ID=24551187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA263,775A Expired CA1062637A (en) | 1975-11-28 | 1976-10-20 | Parrot-beakable freestanding plastic drum assemblage |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1062637A (en) |
| ZA (1) | ZA766289B (en) |
-
1976
- 1976-10-20 CA CA263,775A patent/CA1062637A/en not_active Expired
- 1976-10-22 ZA ZA766289A patent/ZA766289B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA766289B (en) | 1977-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4294374A (en) | Plastic drum assembly | |
| US4094432A (en) | Industrial drums | |
| CA1081143A (en) | Plastic drum | |
| US5096083A (en) | Polyethylene shipping drum | |
| US4489847A (en) | Parrot-beakable freestanding plastic drum assemblage | |
| US4512493A (en) | Molded bucket and lid having high stack strength | |
| US3519163A (en) | Container and closure therefor | |
| US4387828A (en) | Plastic container and lid | |
| US3425471A (en) | Plastic container with double lid | |
| US4022345A (en) | Drum with handling rings | |
| JP2003517973A (en) | Plastic containers and lids | |
| US4203526A (en) | Plastic drum assembly | |
| US4709833A (en) | Rotationally molded salvage drum and recessed lid | |
| US4385709A (en) | Parrot-beakable freestanding plastic drum assemblage | |
| US4992018A (en) | Refuse container for use with emptying mechanism | |
| FI72477B (en) | ETT BURKLOCK. | |
| US4231605A (en) | Carrier assembly for multi-pack containers | |
| MXPA97001958A (en) | Tonel or barrel with cylindrical cover formed by sopl | |
| US4500007A (en) | Parrot-beakable freestanding plastic drum assemblage for handling heavy materials | |
| US5161845A (en) | Lifting and handling device for drums | |
| US5427264A (en) | Open top plastic drum cover | |
| US3220626A (en) | Container reinforcing harness and handle | |
| CA1062637A (en) | Parrot-beakable freestanding plastic drum assemblage | |
| US5301853A (en) | Open top plastic drum with plastic cover | |
| CA1142865A (en) | Industrial drums configured for mechanized and manual handling |