GB2267923A - Retractable bollard - Google Patents

Retractable bollard Download PDF

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Publication number
GB2267923A
GB2267923A GB9213143A GB9213143A GB2267923A GB 2267923 A GB2267923 A GB 2267923A GB 9213143 A GB9213143 A GB 9213143A GB 9213143 A GB9213143 A GB 9213143A GB 2267923 A GB2267923 A GB 2267923A
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GB
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Application
Patent type
Prior art keywords
bollard
silo
respective
stopper
housing
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.)
Withdrawn
Application number
GB9213143A
Other versions
GB9213143D0 (en )
Inventor
Edward Mccomish
Michael Joseph Mcelduff
Original Assignee
Edward Mccomish
Michael Joseph Mcelduff
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

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F13/00Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
    • E01F13/04Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
    • E01F13/044Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface
    • E01F13/046Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface the obstructing members moving up in a translatory motion, e.g. telescopic barrier posts

Abstract

A retractable bollard has a housing (10) for subterranean installation, said housing (10) having four open-topped silos (14) in each of which a bollard (16) is mounted. Means are provided to extend or retract each bollard (16) from the respective silo (14). The means comprises a piston and cylinder arrangement (18) for each bollard (16). Each arrangement (18) is a hydraulic or a pneumatic piped circuit with a supply of medium, a pump and a motor, actuation of which being from remotely located controls. A circular resilient gland (22) is provided circumferentially around the inside of the top of the or each silo to abut against the side of the respective bollard and thus prevent entry of dirt therebetween. <IMAGE>

Description

BOLLARD STOPPER.

This invention relates to a bollard stopper for use particularly, but not necesarily, in thwarting ram raids on primarily, not but essentially, commercial premises. There is presently an increase in the frequency of vehicles being used to smash into the front of shops or other ground-floor premises stocking highvalue portable goods as a means of breaking and entering for the unauthorised removal of such goods.

Accordingly, the present invention is a bollard stopper comprising a housing for subterranean installation, the housing having one or more open-topped silos in the or each of which a bollard is mounted, and means to extend or retract the or each bollard from the respective silo.

Preferably, the means comprises a piston and cylinder arrangement for the or each bollard, the arrangement(s) being in a hydraulic or a pneumatic piped circuit with a supply of medium, a pump and a motor, actuation of which being from remotely located controls.

Preferably also, the head of the or each bollard closes off the open top of the respective silo when in a retracted position. A circular resilient gland is desirably provided circumferentially around the inside of the top of the or each silo to abut against the side of the respective bollard and to prevent entry of dirt or other like matter therebetween.

Preferably further, locking means is provided for the or each bollard, the locking means being activated on full extension of the respective bollard from its silo, the means serving to prevent unauthorised forced retraction of the respective bollard back into its silo.

The locking means preferably comprises one or more bolts arranged peripherally in the or each silo to extend and enter correspondingly located recesses in the respective bollard when fully extended.

An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a plan view of a bollard stopper according to the present invention; Fig. 2 is a cross-sectional view on the line II-II of Fig. 1; Fig. 3 is a circuit <RTI>diayram</RTI> for pneumatic operation of the stopper; and Fig. 4 is a diagrammatic side elevation of a locking means.

Referriny to the drawings, a bollard stopper comprises a housing 10 for subterranean installation.

The housing 10 is of elongate rectangular shape with one of its longitudinal sides 12 uppermost. The housing 10 has one or more open-topped silos 14 (four are shown in this embodiment) in each of which a bollard 16 is uprightly mounted. The open tops of the silos 14 are provided in the uppermost longitudinal side 12 of the housing 10.

Means are provided to extend or retract each bollard 16 simultaneously from the respective silo 14.

The means comprises a piston and cylinder arrangement 18 for each bollard 16, the arrangements 18 being in a pneumatic piped circuit with a supply (not shown) of pressurised air medium, a pump (not shown) and a motor (not shown), actuation of which being from remotely located controls (not shown).

The head 20 of each bollard 16 closes off the open top of the respective silo 14 when in a retracted position. The head 20 is flat and is flush with the surround of the open top of its respective silo. A circular resilient gland 22 is provided circumferentially around the inside of the top of each silo 14 to abut against the side of the respective bollard 16 and to prevent entry of dirt or other like matter therebetween. Each bollard 16 is provided with one or more reflective markings 24.

Lockiny means is provided for each bollard 16, the locking means being activated on full extension of the respective bollard 16 from its silo 14. The means serves to prevent unauthorised forced retraction of the respective bollard 16 back into its <RTI>silo 14.</RTI> The locking means comprises one or more bolts 26 arranged peripherally in each silo 14 to extend and enter correspondingly located recesses 28 in the respective bollard 16 when fully extended. The bolts 26 are each provided at the distal end of a ram and cylinder arrangement 30, the arrangements 30 being in a cascade sequence with the arrangements 18.

In use, a bollard stopper can be installed a short distance from the front of a shop window with the controls being located in the shop. Duriny normal shopping hours, the bollards can be in their retracted position so that they do not obstruct the pavement for pedestrians. However, prior to the shop being closed, the bollards can be extended and locked in position.

Alternatively, the bollard stopper can be installed at the restricted entrance to an estate, carpark or other restricted area, and the bollards raised and lowered to allow permitted entry and exit of vehicles as required.

The stopper described above has four bollards however one to three or more than four can be provided, the spacing between each two bollards being predetermined to prevent passage therethrough of a vehicle and when fully extended are of a height to prevent a high chassis vehicle from being able to pass thereover.

An audible warning mechanism can be provided to operate on extension or retraction of the arrangement.

In a first modification, the bollard stopper described above can be operated through a hydraulic circuit arrangement.

In a second modification, the piston and cylinder arrangements may be double-acting and of a type incorporating a locking or clamping mechanism activated after piston extension and unlocked or unclamped as an initial step in retraction.

In a third modification, the top of the housing may be recessed into the ground and the tops of the bollards joined together by a cross-beam or plate whose depth dimension is accommodated in the recess for its top surface to be flush with the ground when retracted.

The cross-beam or plate may have reflective markings.

Variations and other modifications can be made without departing from the scope of the invention described above.

Claims (7)

1. A bollard stopper comprising a housing for subterranean installation, the housing having one or more open-topped silos in the or each of which a bollard is mounted, and means to extend or retract the or each bollard from the respective silo.
2. A bollard stopper as claimed in Claim 1, wherein the means comprises a piston and cylinder arrangement for the or each bollard, the arrangement(s) being in a hydraulic or a pneumatic piped circuit with a supply of medium, a pump and a motor, actuation of which being from remotely located controls.
3. A bollard stopper as claimed in Claim 1 or 2, wherein the head of the or each bollard closes off the open top of the respective silo when in a retracted position.
4. A bollard stopper as claimed in Claim 1, 2 or 3, wherein circular resilient gland is provided circumferentially around the inside of the top of the or each silo to abut against the side of the respective bollard and to prevent entry of dirt or other like matter therebetween.
5. A bollard stopper as claimed in any one of Claims 1 to 4, wherein locking means is provided for the or each bollard, the locking means being activated on full extension of the respective bollard from its silo, the means serving to prevent unauthorised forced retraction of the respective bollard back into its silo.
6. A bollard stopper as claimed in Claim 5, wherein the locking means comprises one or more bolts arranged peripherally in the or each silo to extend and enter correspondingly located recesses in the respective bollard when fully extended.
7. A bollard stopper substantially as hereinbefore described with reference to the accompanying drawings.
GB9213143A 1992-06-20 1992-06-20 Bollard stopper Withdrawn GB9213143D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9213143A GB9213143D0 (en) 1992-06-20 1992-06-20 Bollard stopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9213143A GB9213143D0 (en) 1992-06-20 1992-06-20 Bollard stopper

Publications (2)

Publication Number Publication Date
GB9213143D0 GB9213143D0 (en) 1992-08-05
GB2267923A true true GB2267923A (en) 1993-12-22

Family

ID=10717464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9213143A Withdrawn GB9213143D0 (en) 1992-06-20 1992-06-20 Bollard stopper

Country Status (1)

Country Link
GB (1) GB9213143D0 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282838A (en) * 1993-10-12 1995-04-19 J & R Hill Retractable traffic control barrier
GB2350387A (en) * 1999-05-18 2000-11-29 Burton Chambers Roderick Lloyd Post arrangement
US7377718B2 (en) * 2004-12-15 2008-05-27 Grid Pro Systems, Inc. Retractable delineator post
US9127423B2 (en) 2011-03-31 2015-09-08 ATG Access Ltd. Bollards
US9127422B2 (en) 2011-01-28 2015-09-08 ATG Access Ltd. Bollards
US9127421B2 (en) 2011-01-28 2015-09-08 ATG Access Ltd. Bollards
US9133590B2 (en) 2011-01-28 2015-09-15 ATG Access Ltd. Bollards
US9133589B2 (en) 2011-05-27 2015-09-15 ATG Access Ltd. Bollards
US9217229B2 (en) 2011-08-01 2015-12-22 ATG Access Ltd. Barriers
US20160215463A1 (en) * 2013-09-27 2016-07-28 Robert Charles Broadhurst Improved Retractable Bollard

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2079356A (en) * 1980-07-03 1982-01-20 Wilson Colin Hutchinson Retractable road surface ramps
GB2169346A (en) * 1984-12-06 1986-07-09 Harry David Dickinson Bollard trafficway barrier and vehicle arrest system
GB2184764A (en) * 1985-12-30 1987-07-01 Huang Tzu Chang A retractable road-block
GB2214210A (en) * 1986-03-17 1989-08-31 Harry David Dickinson Bollard type trafficway barrier
GB2247266A (en) * 1990-08-25 1992-02-26 Barry Higginson Security post

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2079356A (en) * 1980-07-03 1982-01-20 Wilson Colin Hutchinson Retractable road surface ramps
GB2169346A (en) * 1984-12-06 1986-07-09 Harry David Dickinson Bollard trafficway barrier and vehicle arrest system
GB2184764A (en) * 1985-12-30 1987-07-01 Huang Tzu Chang A retractable road-block
GB2214210A (en) * 1986-03-17 1989-08-31 Harry David Dickinson Bollard type trafficway barrier
GB2247266A (en) * 1990-08-25 1992-02-26 Barry Higginson Security post

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282838A (en) * 1993-10-12 1995-04-19 J & R Hill Retractable traffic control barrier
GB2282838B (en) * 1993-10-12 1997-02-12 J & R Hill Improvements in or relating to traffic control arrangements
GB2350387A (en) * 1999-05-18 2000-11-29 Burton Chambers Roderick Lloyd Post arrangement
GB2350387B (en) * 1999-05-18 2003-06-11 Roderick Lloyd Burton-Chambers Post arrangement
US7377718B2 (en) * 2004-12-15 2008-05-27 Grid Pro Systems, Inc. Retractable delineator post
US9127422B2 (en) 2011-01-28 2015-09-08 ATG Access Ltd. Bollards
US9127421B2 (en) 2011-01-28 2015-09-08 ATG Access Ltd. Bollards
US9133590B2 (en) 2011-01-28 2015-09-15 ATG Access Ltd. Bollards
US9127423B2 (en) 2011-03-31 2015-09-08 ATG Access Ltd. Bollards
US9133589B2 (en) 2011-05-27 2015-09-15 ATG Access Ltd. Bollards
US9217229B2 (en) 2011-08-01 2015-12-22 ATG Access Ltd. Barriers
US20160215463A1 (en) * 2013-09-27 2016-07-28 Robert Charles Broadhurst Improved Retractable Bollard

Also Published As

Publication number Publication date Type
GB9213143D0 (en) 1992-08-05 grant

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)