CA2157126A1 - Manual pump device - Google Patents
Manual pump deviceInfo
- Publication number
- CA2157126A1 CA2157126A1 CA 2157126 CA2157126A CA2157126A1 CA 2157126 A1 CA2157126 A1 CA 2157126A1 CA 2157126 CA2157126 CA 2157126 CA 2157126 A CA2157126 A CA 2157126A CA 2157126 A1 CA2157126 A1 CA 2157126A1
- Authority
- CA
- Canada
- Prior art keywords
- cover member
- pump
- cap
- pump member
- cavity
- 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.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 229920000136 polysorbate Polymers 0.000 claims abstract description 4
- 239000003570 air Substances 0.000 description 20
- 235000013361 beverage Nutrition 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 241001669573 Galeorhinus galeus Species 0.000 description 1
- 101100445032 Schizosaccharomyces pombe (strain 972 / ATCC 24843) ell1 gene Proteins 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2046—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under superatmospheric pressure
- B65D81/2053—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under superatmospheric pressure in an least partially rigid container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
A cap has a cover member, a pump member and a spring. The pump member releasably and sealingly engages a mouth of a container. The pump member has a first valve for communicating with an interior space of the container. The cover member slidably and sealingly engages the pump member defining a cavity therebetween. The cover member has a second valve. The spring is mounted between the cover member and the pump member for urging the cover member away from the pump member. Reciprocating movement be-tween the cover member relative to the pump member urges fluid from within the cavity through one of the first and second valves on a first stroke and urges fluid into the cavity through the other of the first and second valves on an opposite stroke.
Description
21~7126 .
MANUAL PUMP DEVICE
Field Qf Invention This invention relates to a hand operated pump for creating and maintaining a pressure or vacuum in a container.
~ Qround of InYentiQn It is well known that many substances are best preserved under vacuum, while others are best preserved under pressure.
If the open volume of air within a container of a cu,~onul~d bever-age is re-pressurized with air, the amount of dissolved carbon dioxide released out of the carbonated beverage is reduced. Thus, a pressurized ~ .
helps to preserve the carbonation.
Similarly, if the open volume of air within a beverage or food con-tainer is evacuated of ambient air, the amount of oxyaen available for oxidation of the food or beveraae is reduced. Thus, an evacuated env;.~"",l~"l helps to pre-serve some substances by decreasing oxidation.
The bottling and packaaina industry frequenfly adds or removes air from its cu, llc,;"erx in order to preserve the contents and extend product shelf life.
However, existing lids and covers retain this pressure or vacuum in the contain-ers only until flhe container is first opened. Once the container is opened for the first time, the pressure or vacuum is released and its preservative effects are lost.
In the case of cu,~ù,~..".~ and non-cu,Lu".,t~ beverages and foods, it is common to simply reseal the container ~Nith its original cap after it is first opened. All~ ati~cly, specially designed caps can be used for resealing.
However, resealina~ is only partially eflective in reducina the loss 2iS7126 of cul~ol1uliu,~ or reducing oxidation. In the case of culbullultd beverages, re-sealing does not add pressure back to the bottle and more ~u,~on 'i~.~ is lost each time the boHle is subsequently reopened. Also, the internal volume above the beverage increases as the beverage is consume, and allows more of Hhe dis-solved carbon dioxide to escape from the liquid. Thus, the original level of car-bonation can not be ~ui~llui~ed and the beveraae rapidly loses it culL~
In the case of oxidation of sensitive Foods and beverages (e. 9., wine), resealing does not reduce the oxidation caused by air already present in the container and merely prevents its exchange with fresh ambient air from out-side the container.
Manual pumps operable with a stopper having a valve for evacuat-ing or pressurizing the open volume of containers have been proposed. For ex-ample, Canadian Patent Nos. 1,280,718 and 1,245,195 each disclose an inte-grated boHle stopper and one-way valve assembly adapted to receive a separate manual pump for pressurizing or extracting air from beverage col,lui"~
One-piece pumps and valve stopper uo",l,i"uliu"s such as are shown in Cana-dian Patent Nos. 1,314, 525 and 1,230,097 are also known.
Unfortunately, prior art devices pumps and valved stopper are in-convenient as the user must obtain the pump col,lpon~,ll each time the boHle is re-evacuated or re-pressurized. Further, one-piece pressure pumps and pres-sure valve c~ bil~u~ s are overly complex and have been limited to pressuriz-ing culbol1u~d beverages.
Child-proof safety lids have not her~tofore been integrated into pump and closure lid devices. BoHle manufacturers and the drug industry com-21~7126 monly use ''child-proof'' safety closure lids or bottle stoppers to seal vials, bottles, and containers containing drugs or other potentially toxic compounds. These l'child-proof" closure lids generally comprise a two piece assembly, having an outer free-turning encircling cover and an inner sealing lid. The outer encircling cover is usually depl~sed and rotated simultaneously to releasably engage a series of splines on the inner sealing lid. Most children lack the strength or coor-dination to open containers sealed with these types of closure lids.
Summ~ry of the Invention These disadvantages of the prior art are overcome by providing a capforcreatingand,,,ui,,lu;,,i,,gpressureorvacuumoffluidinaconfainer.
It is desirable to provide a cap which has an integral pump mecha-nism to pump air into or out of a container.
it is desirable to provide a cap whiGh can be locked to minimize the space occupied by the cap for storage.
It is desirable to provide a cap which has a "child-proof" cover.
According to one aspect of the invention, there is provided a cap comprising a cover member, a pump member and a spring. The pump member releasably sealingly engages a mouth of a container. The pump member has a first valve for communicating with an interior space of the container. The cover member slidably and sealinaly engages the pump member defining a cavity ther-ebetween The pump member has a second valve. The spring is mounted be-tween the cover member and the pump member for ur~ing the cover member away from the pump member. Re.ii~,recu~i"~ movement between the cover member relative to the pump member urges fluid from within the cavity through ~ 2157126 one of the first and second valves on a first stroke and uryes fluid into the cavity through the other of the first and second valves on an opposite stroke.
According to another aspect of the invention, there is provided a tongue and groove el~y~ye~llelll between a cover member and a pump member preventing relative rotation of the cover member with respect to the pump mem-ber.
According to another aspect of fhe invention, there is provided a tongue and groove el1guy~",ell1 between the cover member and the pump mem-ber wherein the enguye",e, ll is selective forming a "child-proof" cap.
D~ " o~ DrPwin~s In illustrations which FIGURE 1 is a pe,~ e-.lh/. view of a container fitted with a pump device in aucoldu"~ the preferred e",boui",e,ll of FIGURES 2,4,6;
FIGURE 2 is a tope view of the e"lL,o~li",tl"l shown in FIGURE 1;
FIGURE 3 is a per~Je.. ,;~o view of a container fitted with a pump device in u~,~u"~ an ~ 't~." "~c G."bodi",e"l, FIGURE 4 is a section view of the line IV-IV of FIGURES 2, 5;
FIGURE 5 is a sechon view of the iine V-V of FIGURE 4, an alter-native ~Illbodi~ l of the present invention;
FIGURE 6 is a section view of the line Vl-VI an " ,,u';ro embodi-ment of the present invention.
Detailed D~ of a Pr~erred ~r"L ~ '~. "t."l of thc Inventlon A preferred embodiment of the present invention i5 aenerally illus-trated in Figure 1. Figure 1 show a cap 1 of the present invention. Cap 1 has a . ~ 2157126 pump member 12 which engages the mouth of container 10 in a l~le~su~l~ and sealingly manner. Cover member 14 slidably engavaes pump member 12.
Referring to Figure 2, cover member 14 has a one-way valve 16. In a preferred embodiment, the outer top surface 22 of cover member 14 has cir-cumferentially spaced grooves 18 radially extending from the valve 16 to the outer periphery of cover member 14. Groove 18 permits air to flow through one-way vaive 16 when a human palm is pressed a,a,ainst top 22.
Referring to Figure 3, the groove 18 may sxtend down the side of the cover member 14 to impose air flow to and from the one-way valve 16, Referring to Figure 4, the cover member 14 is hollow and has an internal circ~",rt"ct"liul surface 24, Pump member 12 has an outer circumferen-tial surface 26 which slidably enga3es surface 24. A cavity 28 is defined be-tween cover member 14 and pump member 12. A iip 40 is disposed in the lower edge of the cover member 14, The lip 40 limits the sliding movement between the cover member 14 and the pump member 12.
Valve 20 is mounted in pump member 12 to perrnit air flow between cavity 28 and fhe interior space of the container 10 through holes 21, Valve 16 is mounted in cover member 14 to pemmit air How between the cavity 28 and the ex-terior of the container 10 through holes 17, Valve~ 16 and 20 are flexible flapshaving a central pin structure 19, Pin structure 19 is inserted through an aperture 25 in the cover member 14 and pump member 12, respectively. The flaps 23 ex-tend over air pu~sau~...uys 17, 21 in cover member 14 and pump member 12, respectively. Air flow in one direction but not in the opposite direction.
Spring 30 is mounted within the oavity 28 for urging the oover mem-21~7126 ber 14 to move away from the pump member 12. Spring 30 preferably has a conical profile and can be cu",~,~ssed to a su~lull~i~..ly flat condition. This per-mits the cover member 14 to be more fully depressed toward the pump member 12, thereby allowing a greater volume of air to be urged into and out of the cavity 28.
Pump member 12 has a circular recess 32 on the inner cavity sur-face of the pump member 12. The recess receives one end of the spring 30 and recesses the spring 30 when the cover member 14 i8 fully deprt,~ed toward the pump member 12. A circular lip 34 is disposed on the upper inside surface of thecover member 14 to receive and retain an opposite end of the spring 30.
A gasket 36 extends circ~",F~ l'y about surface 26 to seal the surface 26 and the surface 24, thereby improving pumping eHiciency.
The pump member 12 has a recess for sealingly engaging a mouth of a container 10. The pump member 12 has a circ~",'~r~ r,liul lip 27 extending 1~ about a lower end thereof. Pump member 12 will snap fit wifh a mouth of con-tainer 10. A ring gasket 38 is inserted in the pump member 12 to seal the pump member 12 to the container 10.
Alternatively, as illustrated in Figure 6, the pump member 12 has an internal thread for engaging a standard thread found on bottles. Cap 1 is screwed onto the bottle 10 to seal the mouth thereof.
To either evacuate or pressurize the container 10, the user must ,rocully pump cover member 14 towards and away from the pump member 12. Cover member 14 in an extended position relative to pump member 12 forms the cavity 28. The extended position permits the cavity 28 to have a maxi-21~7126 mum volume. The volume of cavity 28 is reduced if the cover member 14 is de-pressed towards the pump member 12. The cavity 28 has a minimum volume when the cover member 14 cannot be further depressed toward pump member 12.
To evacuate the container 10 the one-way valve 16 opens only when the cover member 14 is de~,~sssd towards the pump member 12, while the one-way valve 20 remains closed. Evacuating air within cavity 28 opens when the cover member 14 moves away from the pump member 12 drawing air into cavity 28. To pressurize a container, the valves 16 and 20 are reversed.
During pressurization, air is urged out of the cavity 28 into the inte-rior of the container 10 through one-way valve 20 when cover member 14 is de-pressed toward the pump member 12. Air is ur0ed from the exterior of the con-tainer 10 into the cavity 28 through one-way valve 16 when the cover member 14 is extended away from pump member 12.
Referring to Figures 6 (and 1), the locking ",e~ u"i~", is illustrated.
The lockina mechanism is a detent 43, a lock groove 42 and channel 44. Detent 43 groove 42 and channel 44 are disposed on the outer surface of pump mem-ber 12. Lock groove 42 intersects channel 44 as well as detent 43 at about a 90 degree angle. The exact angle is not critical provided a locking relation is estab-lished. A tab 46 is disposed on an inside surface of cover member 14. The tab 46 is in sliding ~lulion~ ip with the channel 44 and the lock groove 42 and de-tent 43. The tab 46 travels along channel 44 and then rotates into locking groove 42 by cl~pl~ssi"g the cover member so that the tab 46 engages the lock groove 42 retaining the cover member 14 in a delJ,t,~sed condition, then the spring 30 2~57126 pushes up the cover member 14 so that the tab 46 is engaged to detent 43. This engagement permits the user to selectively rotate the encircling cylinder 14 to screw or unscrew the pump member 12 with or without the cover member 14 in upright position.
Alternatively, in another e",boJi",~"l, pump member 12 is shorter and is hidden when viewed from the outside. To cor"p~ e for a shorter chan-nel 44 on the outer surface 26 of pump member 12, there is a longer c~ .nd-ing tab 46 on the internal surface 24 of cover memb~r 14.
Referring to Figure 5, the present invention may be modified to have at least one axial spline or tongue 48 axially disposed on the bore 24. A
corresponding axial groove 50 is disposed on the pump member surface 26.
The axial spline 48 engages the axial groove 50, thereby preventing rotational movement of the cover member 14 relative to the pump member 12. This en-gagement permits the user to rotate the cover member 14 to screw or unscrew the pump member 12 onto or off of the neck of container 10.
In another ~"lb~i"l~lll, Figure 4, if the axial spline 48 is shortened so that the cover member 14 must be sl~-b:~lu~liul'y dt",~ sed toward the pump member 12 to permit the axial spline 48 to sel~ oly engage the axial groove 50, the device of the present invention becomes "child proof". The pump mem-ber 12 cannot be screwed onto or off of the neck of the container 10 unless the cover member 14 is simultaneously ;Je~.rt,~se ;;1 toward the pump member 12.
Preferably, the cover member 14 and the pump member 12 are constructed out of injection molded plastic. Alternatively, the cover member 14 and the pump member 12 are constructed out of elastic spring steel which cre-~ 2~7126 ates sound when deformed by air pressure, thereby ~coll~ti~ y indicating air pressure in the container 10.
The above description makes it appar~nt to a person skilled in the art that the present invention could be readily modified. It is ulld~ ,od that chan0es in style, size, c~ ,ollel,l~ and c~"".one"l position may be eflective without departure from the spirit of the invention and with the scope of the at-tached claims.
Field Qf Invention This invention relates to a hand operated pump for creating and maintaining a pressure or vacuum in a container.
~ Qround of InYentiQn It is well known that many substances are best preserved under vacuum, while others are best preserved under pressure.
If the open volume of air within a container of a cu,~onul~d bever-age is re-pressurized with air, the amount of dissolved carbon dioxide released out of the carbonated beverage is reduced. Thus, a pressurized ~ .
helps to preserve the carbonation.
Similarly, if the open volume of air within a beverage or food con-tainer is evacuated of ambient air, the amount of oxyaen available for oxidation of the food or beveraae is reduced. Thus, an evacuated env;.~"",l~"l helps to pre-serve some substances by decreasing oxidation.
The bottling and packaaina industry frequenfly adds or removes air from its cu, llc,;"erx in order to preserve the contents and extend product shelf life.
However, existing lids and covers retain this pressure or vacuum in the contain-ers only until flhe container is first opened. Once the container is opened for the first time, the pressure or vacuum is released and its preservative effects are lost.
In the case of cu,~ù,~..".~ and non-cu,Lu".,t~ beverages and foods, it is common to simply reseal the container ~Nith its original cap after it is first opened. All~ ati~cly, specially designed caps can be used for resealing.
However, resealina~ is only partially eflective in reducina the loss 2iS7126 of cul~ol1uliu,~ or reducing oxidation. In the case of culbullultd beverages, re-sealing does not add pressure back to the bottle and more ~u,~on 'i~.~ is lost each time the boHle is subsequently reopened. Also, the internal volume above the beverage increases as the beverage is consume, and allows more of Hhe dis-solved carbon dioxide to escape from the liquid. Thus, the original level of car-bonation can not be ~ui~llui~ed and the beveraae rapidly loses it culL~
In the case of oxidation of sensitive Foods and beverages (e. 9., wine), resealing does not reduce the oxidation caused by air already present in the container and merely prevents its exchange with fresh ambient air from out-side the container.
Manual pumps operable with a stopper having a valve for evacuat-ing or pressurizing the open volume of containers have been proposed. For ex-ample, Canadian Patent Nos. 1,280,718 and 1,245,195 each disclose an inte-grated boHle stopper and one-way valve assembly adapted to receive a separate manual pump for pressurizing or extracting air from beverage col,lui"~
One-piece pumps and valve stopper uo",l,i"uliu"s such as are shown in Cana-dian Patent Nos. 1,314, 525 and 1,230,097 are also known.
Unfortunately, prior art devices pumps and valved stopper are in-convenient as the user must obtain the pump col,lpon~,ll each time the boHle is re-evacuated or re-pressurized. Further, one-piece pressure pumps and pres-sure valve c~ bil~u~ s are overly complex and have been limited to pressuriz-ing culbol1u~d beverages.
Child-proof safety lids have not her~tofore been integrated into pump and closure lid devices. BoHle manufacturers and the drug industry com-21~7126 monly use ''child-proof'' safety closure lids or bottle stoppers to seal vials, bottles, and containers containing drugs or other potentially toxic compounds. These l'child-proof" closure lids generally comprise a two piece assembly, having an outer free-turning encircling cover and an inner sealing lid. The outer encircling cover is usually depl~sed and rotated simultaneously to releasably engage a series of splines on the inner sealing lid. Most children lack the strength or coor-dination to open containers sealed with these types of closure lids.
Summ~ry of the Invention These disadvantages of the prior art are overcome by providing a capforcreatingand,,,ui,,lu;,,i,,gpressureorvacuumoffluidinaconfainer.
It is desirable to provide a cap which has an integral pump mecha-nism to pump air into or out of a container.
it is desirable to provide a cap whiGh can be locked to minimize the space occupied by the cap for storage.
It is desirable to provide a cap which has a "child-proof" cover.
According to one aspect of the invention, there is provided a cap comprising a cover member, a pump member and a spring. The pump member releasably sealingly engages a mouth of a container. The pump member has a first valve for communicating with an interior space of the container. The cover member slidably and sealinaly engages the pump member defining a cavity ther-ebetween The pump member has a second valve. The spring is mounted be-tween the cover member and the pump member for ur~ing the cover member away from the pump member. Re.ii~,recu~i"~ movement between the cover member relative to the pump member urges fluid from within the cavity through ~ 2157126 one of the first and second valves on a first stroke and uryes fluid into the cavity through the other of the first and second valves on an opposite stroke.
According to another aspect of the invention, there is provided a tongue and groove el~y~ye~llelll between a cover member and a pump member preventing relative rotation of the cover member with respect to the pump mem-ber.
According to another aspect of fhe invention, there is provided a tongue and groove el1guy~",ell1 between the cover member and the pump mem-ber wherein the enguye",e, ll is selective forming a "child-proof" cap.
D~ " o~ DrPwin~s In illustrations which FIGURE 1 is a pe,~ e-.lh/. view of a container fitted with a pump device in aucoldu"~ the preferred e",boui",e,ll of FIGURES 2,4,6;
FIGURE 2 is a tope view of the e"lL,o~li",tl"l shown in FIGURE 1;
FIGURE 3 is a per~Je.. ,;~o view of a container fitted with a pump device in u~,~u"~ an ~ 't~." "~c G."bodi",e"l, FIGURE 4 is a section view of the line IV-IV of FIGURES 2, 5;
FIGURE 5 is a sechon view of the iine V-V of FIGURE 4, an alter-native ~Illbodi~ l of the present invention;
FIGURE 6 is a section view of the line Vl-VI an " ,,u';ro embodi-ment of the present invention.
Detailed D~ of a Pr~erred ~r"L ~ '~. "t."l of thc Inventlon A preferred embodiment of the present invention i5 aenerally illus-trated in Figure 1. Figure 1 show a cap 1 of the present invention. Cap 1 has a . ~ 2157126 pump member 12 which engages the mouth of container 10 in a l~le~su~l~ and sealingly manner. Cover member 14 slidably engavaes pump member 12.
Referring to Figure 2, cover member 14 has a one-way valve 16. In a preferred embodiment, the outer top surface 22 of cover member 14 has cir-cumferentially spaced grooves 18 radially extending from the valve 16 to the outer periphery of cover member 14. Groove 18 permits air to flow through one-way vaive 16 when a human palm is pressed a,a,ainst top 22.
Referring to Figure 3, the groove 18 may sxtend down the side of the cover member 14 to impose air flow to and from the one-way valve 16, Referring to Figure 4, the cover member 14 is hollow and has an internal circ~",rt"ct"liul surface 24, Pump member 12 has an outer circumferen-tial surface 26 which slidably enga3es surface 24. A cavity 28 is defined be-tween cover member 14 and pump member 12. A iip 40 is disposed in the lower edge of the cover member 14, The lip 40 limits the sliding movement between the cover member 14 and the pump member 12.
Valve 20 is mounted in pump member 12 to perrnit air flow between cavity 28 and fhe interior space of the container 10 through holes 21, Valve 16 is mounted in cover member 14 to pemmit air How between the cavity 28 and the ex-terior of the container 10 through holes 17, Valve~ 16 and 20 are flexible flapshaving a central pin structure 19, Pin structure 19 is inserted through an aperture 25 in the cover member 14 and pump member 12, respectively. The flaps 23 ex-tend over air pu~sau~...uys 17, 21 in cover member 14 and pump member 12, respectively. Air flow in one direction but not in the opposite direction.
Spring 30 is mounted within the oavity 28 for urging the oover mem-21~7126 ber 14 to move away from the pump member 12. Spring 30 preferably has a conical profile and can be cu",~,~ssed to a su~lull~i~..ly flat condition. This per-mits the cover member 14 to be more fully depressed toward the pump member 12, thereby allowing a greater volume of air to be urged into and out of the cavity 28.
Pump member 12 has a circular recess 32 on the inner cavity sur-face of the pump member 12. The recess receives one end of the spring 30 and recesses the spring 30 when the cover member 14 i8 fully deprt,~ed toward the pump member 12. A circular lip 34 is disposed on the upper inside surface of thecover member 14 to receive and retain an opposite end of the spring 30.
A gasket 36 extends circ~",F~ l'y about surface 26 to seal the surface 26 and the surface 24, thereby improving pumping eHiciency.
The pump member 12 has a recess for sealingly engaging a mouth of a container 10. The pump member 12 has a circ~",'~r~ r,liul lip 27 extending 1~ about a lower end thereof. Pump member 12 will snap fit wifh a mouth of con-tainer 10. A ring gasket 38 is inserted in the pump member 12 to seal the pump member 12 to the container 10.
Alternatively, as illustrated in Figure 6, the pump member 12 has an internal thread for engaging a standard thread found on bottles. Cap 1 is screwed onto the bottle 10 to seal the mouth thereof.
To either evacuate or pressurize the container 10, the user must ,rocully pump cover member 14 towards and away from the pump member 12. Cover member 14 in an extended position relative to pump member 12 forms the cavity 28. The extended position permits the cavity 28 to have a maxi-21~7126 mum volume. The volume of cavity 28 is reduced if the cover member 14 is de-pressed towards the pump member 12. The cavity 28 has a minimum volume when the cover member 14 cannot be further depressed toward pump member 12.
To evacuate the container 10 the one-way valve 16 opens only when the cover member 14 is de~,~sssd towards the pump member 12, while the one-way valve 20 remains closed. Evacuating air within cavity 28 opens when the cover member 14 moves away from the pump member 12 drawing air into cavity 28. To pressurize a container, the valves 16 and 20 are reversed.
During pressurization, air is urged out of the cavity 28 into the inte-rior of the container 10 through one-way valve 20 when cover member 14 is de-pressed toward the pump member 12. Air is ur0ed from the exterior of the con-tainer 10 into the cavity 28 through one-way valve 16 when the cover member 14 is extended away from pump member 12.
Referring to Figures 6 (and 1), the locking ",e~ u"i~", is illustrated.
The lockina mechanism is a detent 43, a lock groove 42 and channel 44. Detent 43 groove 42 and channel 44 are disposed on the outer surface of pump mem-ber 12. Lock groove 42 intersects channel 44 as well as detent 43 at about a 90 degree angle. The exact angle is not critical provided a locking relation is estab-lished. A tab 46 is disposed on an inside surface of cover member 14. The tab 46 is in sliding ~lulion~ ip with the channel 44 and the lock groove 42 and de-tent 43. The tab 46 travels along channel 44 and then rotates into locking groove 42 by cl~pl~ssi"g the cover member so that the tab 46 engages the lock groove 42 retaining the cover member 14 in a delJ,t,~sed condition, then the spring 30 2~57126 pushes up the cover member 14 so that the tab 46 is engaged to detent 43. This engagement permits the user to selectively rotate the encircling cylinder 14 to screw or unscrew the pump member 12 with or without the cover member 14 in upright position.
Alternatively, in another e",boJi",~"l, pump member 12 is shorter and is hidden when viewed from the outside. To cor"p~ e for a shorter chan-nel 44 on the outer surface 26 of pump member 12, there is a longer c~ .nd-ing tab 46 on the internal surface 24 of cover memb~r 14.
Referring to Figure 5, the present invention may be modified to have at least one axial spline or tongue 48 axially disposed on the bore 24. A
corresponding axial groove 50 is disposed on the pump member surface 26.
The axial spline 48 engages the axial groove 50, thereby preventing rotational movement of the cover member 14 relative to the pump member 12. This en-gagement permits the user to rotate the cover member 14 to screw or unscrew the pump member 12 onto or off of the neck of container 10.
In another ~"lb~i"l~lll, Figure 4, if the axial spline 48 is shortened so that the cover member 14 must be sl~-b:~lu~liul'y dt",~ sed toward the pump member 12 to permit the axial spline 48 to sel~ oly engage the axial groove 50, the device of the present invention becomes "child proof". The pump mem-ber 12 cannot be screwed onto or off of the neck of the container 10 unless the cover member 14 is simultaneously ;Je~.rt,~se ;;1 toward the pump member 12.
Preferably, the cover member 14 and the pump member 12 are constructed out of injection molded plastic. Alternatively, the cover member 14 and the pump member 12 are constructed out of elastic spring steel which cre-~ 2~7126 ates sound when deformed by air pressure, thereby ~coll~ti~ y indicating air pressure in the container 10.
The above description makes it appar~nt to a person skilled in the art that the present invention could be readily modified. It is ulld~ ,od that chan0es in style, size, c~ ,ollel,l~ and c~"".one"l position may be eflective without departure from the spirit of the invention and with the scope of the at-tached claims.
Claims (7)
1. A cap comprising a pump member for releasably sealingly engaging a mouth of a container, said pump member having a first valve for communication with an inte-rior space of said container, a cover member slidably and sealingly engaging said pump mem-ber defining a cavity the therebetween, said cover member having a second valve,whereby reciprocating movement between said cover member relative to said pump member urges fluid from within the cavity through one of said first and sec-ond valves on a first stroke and urges fluid into the cavity through the other of said first and second valves on an opposite stroke.
2. The cap as claimed in claim 1 wherein a spring mounted is be-tween said cover member and said pump member for urging said cover member away from said pump member.
3. The cap as claimed in claim 2 wherein said cover member is lock-ably engagable with said pump member at an end of one of said first and oppo-site strokes.
4. The cap as claimed in claim 3 wherein said cap further comprises a locking means for selectively locking said cover member in a fixed relationship with said pump member to prevent said cover member from moving axially rela-tive to said pump member.
5. The cap as claimed in claim 4 wherein said cover member has at least one groove on a top surface of said cover member, said at least one groove in fluid communication with said second valve.
6. The cap as claimed in claim 3 wherein said cover member and said pump member have a tongue and groove engagement preventing relative rota-tional movement therebetween.
7. The cap as claimed in claim 6 wherein said tongue and groove en-gagement extends along only a portion of said cover member and said pump member making said tongue and groove engagement selective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2157126 CA2157126A1 (en) | 1995-08-29 | 1995-08-29 | Manual pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2157126 CA2157126A1 (en) | 1995-08-29 | 1995-08-29 | Manual pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2157126A1 true CA2157126A1 (en) | 1997-03-01 |
Family
ID=4156505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2157126 Abandoned CA2157126A1 (en) | 1995-08-29 | 1995-08-29 | Manual pump device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2157126A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2446464A (en) * | 2007-02-10 | 2008-08-13 | David Paul Coleman | Disposable pressure preservation cap |
-
1995
- 1995-08-29 CA CA 2157126 patent/CA2157126A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2446464A (en) * | 2007-02-10 | 2008-08-13 | David Paul Coleman | Disposable pressure preservation cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20020829 |