GB897622A - Locking device on hydraulic brakes to prevent theft of automobiles - Google Patents

Locking device on hydraulic brakes to prevent theft of automobiles

Info

Publication number
GB897622A
GB897622A GB35704/60A GB3570460A GB897622A GB 897622 A GB897622 A GB 897622A GB 35704/60 A GB35704/60 A GB 35704/60A GB 3570460 A GB3570460 A GB 3570460A GB 897622 A GB897622 A GB 897622A
Authority
GB
United Kingdom
Prior art keywords
valve
spring
brake
brakes
pressure
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
Application number
GB35704/60A
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
Publication of GB897622A publication Critical patent/GB897622A/en
Expired legal-status Critical Current

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
    • B60R25/04—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 the propulsion system, e.g. engine or drive motor
    • B60R25/042—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 the propulsion system, e.g. engine or drive motor operating on the fuel supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

897,622. Vehicles, preventing theft. DUNCAN, D. S. Oct. 18, 1960 [Oct. 20, 1959], No. 35704/60. Class 79(3). [Also in Group XXXIV] A brake lock device in a hydraulic brake control system of a vehicle for locking the hydraulic brakes of the vehicle in the applied position to prevent its unauthorised movement, comprises a valve 8 which in the locked position shown closes passages 7 between a chamber I connected by a pipe 10 to a master cylinder and a chamber 2 connected by a pipe 11 of different diameter (to make it difficult to fit an elbow between the pipes 10 and 11) connected to the brake cylinders. A spring 13 acting between a flange 12 on the end of a valve stem 9 and a ported valve seat 5 biases the valve to its closed position, while a stiffer spring 14 acting between the flange 12 and an externally threaded sleeve 16 tends to open the valve. Rotation of a key 27 turns the threaded sleeve 16 from the locked position shown and raises it to compress the spring 14, so that the valve 8 is lifted clear of the ported valve seat 5 against the bias of the spring 13, to allow normal operation of the brakes. In the position shown a brake application will cause the valve to be lifted due to the hydraulic pressure in the chamber 1, but once the pressure in the two chambers has equalized the valve is closed by the spring 13 and the brakes held applied. A bleed may be incorporated to release the brake pressure slowly. The threaded sleeve 16 has passages 22 to equalize the pressure at its two ends, a sealing ring 20a preventing escape of the brake fluid. In another embodiment, Fig. 2, the valve is lifted by means of an eccentric rod 42 held between two rotatable studs 40 and 41, the rod acting on a tappet 46. If the lock is removed a spring 52 pushes the studs 40, 41 to the right thereby breaking a seal 43 and causing escape of the brake fluid. The springs 13, 14, Fig. 1, may be formed from a single spring joined to the flange 12 and to a yoke connected to a tappet which slides in the stem 9. In alternative forms, a spring may be situated between the head of valve 8 and the member 5, the valve may be of resilient material and be of frustoconical shape or of a ball valve kind, and in place of the seal 30, Fig. 1, gasket compounds may be used. The lock can be associated with the ignition control switch of a vehicle.
GB35704/60A 1959-10-20 1960-10-18 Locking device on hydraulic brakes to prevent theft of automobiles Expired GB897622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA594100 1959-10-20

Publications (1)

Publication Number Publication Date
GB897622A true GB897622A (en) 1962-05-30

Family

ID=25560477

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35704/60A Expired GB897622A (en) 1959-10-20 1960-10-18 Locking device on hydraulic brakes to prevent theft of automobiles

Country Status (1)

Country Link
GB (1) GB897622A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340891A (en) * 1966-05-12 1967-09-12 Garza Jesus De La Key-operated non-drip valve
GB2118653A (en) * 1982-03-19 1983-11-02 Mark Alexander Canini Vehicle immobilisation device
EP0165078A2 (en) * 1984-06-15 1985-12-18 McCaskie, Paul William Brake locking device
GB2283289A (en) * 1993-10-09 1995-05-03 Bramley David Eng Ltd Immobilising valve for a vehicle hydraulic brake circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340891A (en) * 1966-05-12 1967-09-12 Garza Jesus De La Key-operated non-drip valve
GB2118653A (en) * 1982-03-19 1983-11-02 Mark Alexander Canini Vehicle immobilisation device
EP0165078A2 (en) * 1984-06-15 1985-12-18 McCaskie, Paul William Brake locking device
EP0165078A3 (en) * 1984-06-15 1986-12-30 McCaskie, Paul William Brake locking device
GB2283289A (en) * 1993-10-09 1995-05-03 Bramley David Eng Ltd Immobilising valve for a vehicle hydraulic brake circuit

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