WO1993024349A3 - Security devices, systems or the like - Google Patents

Security devices, systems or the like Download PDF

Info

Publication number
WO1993024349A3
WO1993024349A3 PCT/GB1993/001178 GB9301178W WO9324349A3 WO 1993024349 A3 WO1993024349 A3 WO 1993024349A3 GB 9301178 W GB9301178 W GB 9301178W WO 9324349 A3 WO9324349 A3 WO 9324349A3
Authority
WO
WIPO (PCT)
Prior art keywords
shuttle valve
hand brake
actuator
piston
cylinder
Prior art date
Application number
PCT/GB1993/001178
Other languages
French (fr)
Other versions
WO1993024349A2 (en
Inventor
Brian Lewis Fisher
Original Assignee
Backstop Ltd
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 Backstop Ltd filed Critical Backstop Ltd
Publication of WO1993024349A2 publication Critical patent/WO1993024349A2/en
Publication of WO1993024349A3 publication Critical patent/WO1993024349A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/08—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on brakes or brake systems
    • B60R25/086—Locking of hand-actuated control actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/002—Locking of control actuating or transmitting means
    • B60R25/003—Locking of control actuating or transmitting means locking of control actuating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention relates to a vehicle security system comprising a linear hydraulic actuator (3) of the piston and cylinder type connected between the vehicle chassis (4) and hand brake lever (1). The cylinder (3b) of the actuator is connected to a hydraulic circuit including a shuttle valve (9) and a non-return valve (10). When the system is unlocked, the shuttle valve is open, and hydraulic fluid is free to flow from a reservoir (8) via the shuttle valve, both into and out of the actuator cylinder (3b), allowing the piston (3a) and therefore the hand brake lever (1) to move freely in both directions for normal driver-operation of the hand brake. When the system is locked, the shuttle valve is closed, and the non-return valve (10) permits fluid flow, and therefore piston movement, in one direction only. In this condition, the hand brake lever (1) can be moved in a brake-application direction but not in a brake release direction.
PCT/GB1993/001178 1992-06-04 1993-06-03 Security devices, systems or the like WO1993024349A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9211797A GB9211797D0 (en) 1992-06-04 1992-06-04 Security devices,systems or the like
GB9211797.7 1992-06-04

Publications (2)

Publication Number Publication Date
WO1993024349A2 WO1993024349A2 (en) 1993-12-09
WO1993024349A3 true WO1993024349A3 (en) 1994-02-17

Family

ID=10716502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/001178 WO1993024349A2 (en) 1992-06-04 1993-06-03 Security devices, systems or the like

Country Status (2)

Country Link
GB (1) GB9211797D0 (en)
WO (1) WO1993024349A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE473944A (en) *
GB2210344A (en) * 1987-10-01 1989-06-07 Eric Jeffrey Edmunds Anti-theft lock acting on vehicle brakes
US5078456A (en) * 1990-03-30 1992-01-07 Cox Terry L Brake pedal retaining vehicular anti-theft brake locking mechanism
WO1992006867A1 (en) * 1990-10-15 1992-04-30 Erik Stoffijn Security device against car theft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE473944A (en) *
GB2210344A (en) * 1987-10-01 1989-06-07 Eric Jeffrey Edmunds Anti-theft lock acting on vehicle brakes
US5078456A (en) * 1990-03-30 1992-01-07 Cox Terry L Brake pedal retaining vehicular anti-theft brake locking mechanism
WO1992006867A1 (en) * 1990-10-15 1992-04-30 Erik Stoffijn Security device against car theft

Also Published As

Publication number Publication date
GB9211797D0 (en) 1992-07-15
WO1993024349A2 (en) 1993-12-09

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