[go: up one dir, main page]

US3799686A - Marker posts - Google Patents

Marker posts Download PDF

Info

Publication number
US3799686A
US3799686A US00170033A US17003371A US3799686A US 3799686 A US3799686 A US 3799686A US 00170033 A US00170033 A US 00170033A US 17003371 A US17003371 A US 17003371A US 3799686 A US3799686 A US 3799686A
Authority
US
United States
Prior art keywords
post
core element
plate
loop
flexible core
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 - Lifetime
Application number
US00170033A
Other languages
English (en)
Inventor
Clarence Williams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3799686A publication Critical patent/US3799686A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/627—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection self-righting after deflection or displacement
    • E01F9/629—Traffic guidance, warning or control posts, bollards, pillars or like upstanding bodies or structures

Definitions

  • the post member is constructed of a plurality of post portions united together by means of a steel cable, thereby providing a post member with great resilience and strength. Should the post be destroyed on being run over by a vehicle it separates into a plurality of post portions which present much less a hazard to vehicles and pedestrians than those known marker posts in which this feature is not incorporated.
  • Two alternative design of base means are described which enable a post of this type to be attached to any kind of road surface by the use of either one or the other.
  • MARKER POSTS Theinvention relates to yieldable posts for the sign posting and organisation of road traffic, and for the purpose of acting "as resilient posts which may be mounted in or on the road surface and thereby give an audible warning of a hazard ahead by impact with the front and underside of the vehicle.
  • Yieldable marker posts are known which deflect on collision therewith by a vehicle this reducing the risk of damage to the vehicle and other possible dangerous consequences
  • these can be torn away from their base mountings or otherwise severely damaged on being run over by a vehicle, and thereafter constitute a hazard to vehicles or pedestrians using the road particularly if the posts are of substantial size.
  • This disadvantage is substantially reduced by formingthe post member of a plurality of post portions united together by means of oneor more elongate flexible core elements passing through passageways formed in the respective post portions, the said post portions beingfreely separable from one another upon detachment of the post from the base member.
  • the post is torn away from the base means upon being run over it will separate into its relatively small component parts which will constitute much less a hazard.
  • the major part of the post may be constructed as an integral shaft, preferably of extruded rubber, and provided with a cap post portion and a base post portion or portions, the portions being united together as aforesaid.
  • the said elongate flexible core element is a flexible metal cable, galvanised or enclosed in a sheath of a suitable plastics material to minimise the effects of corrosion, or made of a strong and corrosion resistant material such as stainless steel, and may conveniently be in the form of a loop extending over the length of the post, both free ends of the flexible core element being secured either at the base means in the one case, or at the terminal cap segment in the other case, so as to keep the element in tension.
  • the marker post would be placed in line of traffic flow and be subjected to an indefinite number of collision impacts therewith by vehicles travelling at high speeds.
  • marker posts as previously known used in this manner there is a risk that either the entire post complete with base means may be torn from its anchorage or one or more fragments of the post may be torn away during impact and the whole or a part of such a post unit projected towards other vehicles or pedestrians.
  • the use of a loop construction as previously described substantially reduces this form of hazard. It
  • a loop of flexible core element would be used with a tensile strength substantially higher than the force required to detach the marker post from its moorings at the ground surface, and that the free ends of the flexible core element are secured by end connectionsdesigned to separate from the said flexible core element at a tension substantially lower than that required to detach the said marker post from its anchortheflexible core element.
  • end connections designed to separate from the said flexible core element at a tension substantially lower than that required to detach the said marker post from its anchortheflexible core element.
  • the flexible core element must then unthread through all of the post segments before any of the post segments can be completely separated one from another. The energy of collision is thus disrupted and dissipated in this unthreading process and projection of the fragments thereby minimised.
  • the turn of theloop of the flexible core element can be accommodated within a conduit formed of a deformable material such as malleable copper or aluminum, which deforms during impact and thereby grips the flexible core element, providing some further measure of resistance during the unthreading process so as to enhance the dissipation of collision energy still further.
  • a deformable material such as malleable copper or aluminum
  • the post portions may take any of a variety of forms. Thusthey could comprise thick disc-shaped members,
  • the post portions are in the form of blocks whose cross-section corresponds to the. desired cross-section of the post, and which are provided on opposite faces thereof with two or more shaped projections and two or more shaped recesses, it being; understood that on assembly the said projections will locate in the corresponding recesses.
  • the projections and recesses will be of conical or frus'toconical form, said recesses being provided on one of said faces and said projections on the other. Passageways which may be rein forced, for the core elements may then be provided in the post portions, extending between the apices of the projections and recesses.
  • the post portions may, if desired, all be made of rubber, preferably hard rubber, or some other hard wearing resilient material such as a suitable synthetic plastics material, some may be of non-resilient material such as hard plastics material or metal. Thus portions of resilient and non-resilient material may be arranged at different regions of the post in order to provide a variation in properties along the length of the post.
  • Marker post units according to the invention may be provided with a patterned, lettered, coloured, fluorescent or reflective surface and be made of any suitable cross-section or height, or if desired be fitted with a cap or sheath of a particular design, or be provided with a reflective element or elements embedded or recessed into the outer surface or surfaces of the elements of the post unit, or any combination of these features according to the uses and situations in which it is intended to be used.
  • the preferred method of anchoring the flexible post to the ground is related to the nature of the material of which the ground surface layer is composed. Accordingly two types of base means are described which permit the post to be secured to any type of road surface by the use of either one or the other.
  • FIG. 1 is a sectional front elevation through a marker designed for embedment in the ground. In this view the post portions are shown as if slightly separated from one another in partially-exploded view.
  • FIG. 2 is a side elevation view of the post unit of FIG. 1 with the post portions shown in apposition to one another. I
  • FIG. 3 is a front elevation view of a post portion of the unit of FIG. 1.
  • FIG. 4 is a plan view of a post portion of the unit of FIG. 1.
  • FIG. 5 is'a sectional front elevation through a marker post unit with a base means designed'for attachment to the ground by means of bolts.
  • the post portions are shown as if slightly separated from one another in partially exploded view.
  • FIG. 6 is a side elevation view of the post unit of FIG. 5 with the post portions shown in apposition to one another.
  • FIG. 7 is an enlarged view of the base of FIG. 5.
  • FIG. 8 is an enlarged view of the base of FIG. 6.
  • FIGS. 1 and 2 show a yieldable marker post unit comprising a base plate 1 made from a portion of steel plate.
  • a metal rod 2 with its distal end expanded in the form of an inverted Y arises from the midpoint of the lower surface of the base plate 1 and serves to secure the base plate I firmly when the post unit is embedded in the ground.
  • a post Connected to the base plate 1 is a post, generally indicated at 3, which comprises a plurality of resilient hard rubber post portions 4, 5, 6 and 7 united together by an elongate flexible core element in the form of a steel cable 8 having the form of a loop extending over the length of the post 3.
  • the ends of the cable 8 pass through passageways in hard rubber washers 9 embedded in and below the base plate 1 and I through metal washers l0 and spacer sleeves 11 before passing through a metal flange 12.
  • the free ends of the cable 8 are secured under tension by collars 13 of aluminum compressed onto the cable 8 by the use of a suitable press.
  • the uppermost or cap, portion 4 is generally in the form of a transversely flattened hemisphere and has embedded in it a hollow reinforcing U-tube 14 of aluminum. This U-tube 14 is to transmit the stress imparted by the tension in the cable 8 to the remaining post portions.
  • the lower face of the cap portion 4 is provided with two cone-shaped recesses 15 which are adapted to receive the two cone-shaped projections 16 provided on the upper surface of shaft post portion 5, as seen better in FIGS. 3 and 4. Tuming'for the moment to FIGS. 3 and 4, it will be seen that shaft post portion 5 comprises a block whose cross-section is elongate, having two opposite longer sides and rounded ends.
  • Shaft post portions 6 are identical in construction with shaft post portion 5.
  • the lowermost post portion 7 in contact with the base plate 1 has at the point where the cable 8 passes from the rubber washer 9 into the post portion 7 a reinforced coneshaped recess 20 which allows the cable 8 to take the form of a smooth curve in contact with the lowest post portion 7 when the post is bent over at an angle at the base, thus tending to minimise stress on the cable 8 at this point.
  • the post unit is erected by embedding the base means in concrete up to the level of the base plate 1 within a hole of suitable size prepared in the ground, the flange 12 then acting as an anchor which effectively restrains the post from being uprooted on impact by a vehicle.
  • FIGS. 5, 6, 7 and 8 represent an example of a post with an alternative design of base means.
  • the base means is in the form of a flat steel plate 21 suitably perforated so that bolts, generally indicated at 22, may be passed through it and into the road surface so as to anchor the plate 21 securely flush with the ground.
  • the plate may be secured to the road surface with a suitable adhesive, such as epoxy .resin.
  • a hollow steel cylinder or conduit 23 which serves as a passageway for the turn of the loop of the flexible steel cable 24 forming the core element.
  • Metal or hard plastic bushes 25 which are free to rotate within the conduit 23 and which protrude for a short distance from its ends serve to guide the cable 24 in a smooth curve as it emerges from the conduit, and act as bearing surfaces between the conduit 23 and the cable 24 when the flexible post is bent over at the junction between the lowest post segment 26 and the base means 21.
  • the lowest post segment 26 contains in its lower surface a recess 27 which is reciprocally shaped to conform with the
  • the body of the post is composed of segments 30, 31 and 32 identical in construction with post segment 5 of the previous example.
  • the cap member 33 of the post unit is designed so as to permit the two ends of the cable 24 to be anchored therein, and is of a cross-section corresponding with that of the body of the post.
  • the lower surface of cap member 33 contains two conical recesses 34 reciprocally shaped so as to correspond with the two conical projections 35 arising from the upper surface of the uppermost post segment 32.
  • the two ends of the cable 24 pass upwards through segments 30, 31 and 32 and enter corresponding channels 36 each at the apex of a coneshapcd recess 34 in the lower surface of cap member 33.
  • Channels 36 conduct the ends of cable 24 through corresponding holes in a steel plate 37 embedded in the body of cap member 33 and lying transversely and above the recesses 34.
  • the steel plate 37 serves to transmit the stress imparted by the tension in the cable 24 secured above it.to the rest of the post portions.
  • the channels 36 are expanded in the region above the level of the steel plate 37 and emerge on the upper surface of the cap member 33. This expansion serves to accommodate collars 38 of aluminum secured by compression to the cable ends.
  • one collar 38 is secured to one end of a length of cable 24 which is then threaded through the component parts of the flexible post unit, and the free end allowed to pro trude from the upper surface of the cap member 33.
  • the post unit is then externally compressed in a longi tudinal direction, the second collar 38 secured in position on the cable 24 and surplus cable end trimmed.
  • On releasing the external compression of the post unit the secured cable ends are withdrawn into the body of the cap member 33.
  • the residual spaces above the collars 38 are then filled by rubber plugs 39 coated with a suitable adhesive andrinserted in position.
  • a road marker comprising:
  • a base adapted to be secured to the surface of a roadway; an elongated standard made up of a plurality of post portions and a cap segment; at least one of the post portions being formed of a resilient plastics material; the cap segment, post portions and base being united together by means of a loop of a flexible coreelement passing through passageways formed within them; the ends of the flexible core element being secured independently of each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)
US00170033A 1970-08-18 1971-08-09 Marker posts Expired - Lifetime US3799686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3978770 1970-08-18

Publications (1)

Publication Number Publication Date
US3799686A true US3799686A (en) 1974-03-26

Family

ID=10411510

Family Applications (1)

Application Number Title Priority Date Filing Date
US00170033A Expired - Lifetime US3799686A (en) 1970-08-18 1971-08-09 Marker posts

Country Status (3)

Country Link
US (1) US3799686A (ja)
JP (1) JPS514920B1 (ja)
AU (1) AU3226471A (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123183A (en) * 1977-08-29 1978-10-31 Ryan John E Guidepost for roadways and the like
EP0029015A2 (en) * 1979-11-09 1981-05-20 Dino Ciuccarelli Road boundary marker
US4269534A (en) * 1979-08-20 1981-05-26 Ryan John E Replaceable guide post
US4486117A (en) * 1981-08-24 1984-12-04 Blau & Lapides, Inc. Flexible traffic standard
US6375385B1 (en) 1998-10-15 2002-04-23 Gregory B. Kennedy Flexible support
US20040025872A1 (en) * 2000-07-05 2004-02-12 Plath Peter Jorg Device for carrying out a catalytic reaction
US7325999B1 (en) 2005-03-02 2008-02-05 Qwick Kurb, Inc. Locking device for traffic beacon
US7938594B1 (en) 2005-03-02 2011-05-10 Qwick Kurb, Inc. Holding device for traffic beacon
US20160040374A1 (en) * 2013-03-08 2016-02-11 Kotrass Co., Ltd. Delineator post having restoration function
US11118323B1 (en) * 2017-06-05 2021-09-14 David Putnam Traffic-compatible vented precipitation guarding manhole cover assemblies

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPN121595A0 (en) * 1995-02-20 1995-03-16 Hotchkin, Darren John A road marker post

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057125A (fr) * 1951-05-18 1954-03-05 Borne en béton
FR1301141A (fr) * 1961-09-08 1962-08-10 Hamilton Ltd Poteau de signalisation
US3355998A (en) * 1964-07-24 1967-12-05 Allen V Roemisch Highway marker device
US3478714A (en) * 1968-08-05 1969-11-18 Borg Warner Signal device
US3485201A (en) * 1968-08-05 1969-12-23 Borg Warner Signal device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057125A (fr) * 1951-05-18 1954-03-05 Borne en béton
FR1301141A (fr) * 1961-09-08 1962-08-10 Hamilton Ltd Poteau de signalisation
US3355998A (en) * 1964-07-24 1967-12-05 Allen V Roemisch Highway marker device
US3478714A (en) * 1968-08-05 1969-11-18 Borg Warner Signal device
US3485201A (en) * 1968-08-05 1969-12-23 Borg Warner Signal device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123183A (en) * 1977-08-29 1978-10-31 Ryan John E Guidepost for roadways and the like
US4269534A (en) * 1979-08-20 1981-05-26 Ryan John E Replaceable guide post
EP0029015A2 (en) * 1979-11-09 1981-05-20 Dino Ciuccarelli Road boundary marker
EP0029015A3 (en) * 1979-11-09 1981-09-16 Dino Ciuccarelli Road boundary marker
US4486117A (en) * 1981-08-24 1984-12-04 Blau & Lapides, Inc. Flexible traffic standard
US6375385B1 (en) 1998-10-15 2002-04-23 Gregory B. Kennedy Flexible support
US20040025872A1 (en) * 2000-07-05 2004-02-12 Plath Peter Jorg Device for carrying out a catalytic reaction
US20050211242A9 (en) * 2000-07-05 2005-09-29 Plath Peter J An apparatus for producing a catalytic reaction
US7325999B1 (en) 2005-03-02 2008-02-05 Qwick Kurb, Inc. Locking device for traffic beacon
US7938594B1 (en) 2005-03-02 2011-05-10 Qwick Kurb, Inc. Holding device for traffic beacon
US20160040374A1 (en) * 2013-03-08 2016-02-11 Kotrass Co., Ltd. Delineator post having restoration function
US9580877B2 (en) * 2013-03-08 2017-02-28 Kotrass Co., Ltd. Delineator post having restoration function
US11118323B1 (en) * 2017-06-05 2021-09-14 David Putnam Traffic-compatible vented precipitation guarding manhole cover assemblies

Also Published As

Publication number Publication date
AU3226471A (en) 1973-02-15
JPS514920B1 (ja) 1976-02-16

Similar Documents

Publication Publication Date Title
US3799686A (en) Marker posts
US3499413A (en) Road markers
US3355998A (en) Highway marker device
US4050401A (en) Barricade system
US4061435A (en) Roadway delineator
US7819605B2 (en) Delineator mounting system
US3969853A (en) Torque fin anchor
US3564984A (en) Highway marker
US6210066B1 (en) Breakaway bracket assembly
US3478714A (en) Signal device
US1789525A (en) Street-traffic marker
US2141067A (en) Safety marker for traffic lanes
US20190257044A1 (en) Traffic control marker including a reinforcing member
US2851935A (en) Highway marker
US4117455A (en) Self-righting roadway marking device
US4090465A (en) Traffic control director
US7478796B2 (en) Guardrail support members
US2304345A (en) Traffic marker
NO324580B1 (no) Ettergivende forbindelsesanordninger for mast og baerestruktur
KR102605922B1 (ko) 노면 결합력이 향상된 시선 유도봉 및 이의 시공 방법
US3450387A (en) Highway safety fence posts
US3362305A (en) Highway marking device
US3438311A (en) Highway marker
WO2018160074A1 (en) Delineator post and delineator post assembly
US9297130B2 (en) Cable-barriers