GB2279404A - Vehicle anti-theft device - Google Patents

Vehicle anti-theft device Download PDF

Info

Publication number
GB2279404A
GB2279404A GB9313271A GB9313271A GB2279404A GB 2279404 A GB2279404 A GB 2279404A GB 9313271 A GB9313271 A GB 9313271A GB 9313271 A GB9313271 A GB 9313271A GB 2279404 A GB2279404 A GB 2279404A
Authority
GB
United Kingdom
Prior art keywords
vehicle
solenoid
tube
glass
mercury
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Withdrawn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
GB9313271A
Other versions
GB9313271D0 (en
Inventor
David John Page
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
Priority to GB9313271A priority Critical patent/GB2279404A/en
Publication of GB9313271D0 publication Critical patent/GB9313271D0/en
Publication of GB2279404A publication Critical patent/GB2279404A/en
Withdrawn legal-status Critical Current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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/004—Operated by deformation of container
    • 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
    • B60R2025/041—Preventing use of engine operating on the fluid supply

Abstract

A glass or plastic tube, filled with mercury and forming part of the ignition circuit or forming part of the fuel system, is ruptured by operation of a solenoid with an apertured rod through which the tube passes. The solenoid is energised if engine starting is attempted without entry of a particular number into a key pad. The wrong number illuminates a red light and the correct number a green light. The glass or plastic tube is contained in a steel or plastic box.

Description

ELECTROMECHANICAL IMMOBILISER DIESEL AND PETROL ENGINES CIRCUIT BREAKER THE PRINCIPLE OF THE DEVICE A solenoid is activated having a guillotine action on a glass or plastic tube (100mm long, 10mm diameter), filled with mercury, with push in connectors at each end. When the tube is ruptured the electrical circuit to the ignition key is broken, immobilising the engine immediately.
The ignition system is normal, built in is a key pad containing the personal number of the car owner. A relay contains part of the anti-theft device. Should the ignition key be operated without this number having been entered first, a red light will show. Further turning of the ignition key in order to start the engine activates the solenoid. The guillotine action breaks the mercury fuse, and immobilises the vehicle until the owner accesses the fuse container with a security key to replace it.
On replacing the fuse, the owner of the vehicle enters the number on the key-pad; a green light shows that the engine cane be activated. On eventual switch-off and withdrawal of the ignition key, the vehicle is again protected against theft, and the sequence above will have to be repeated when the ignition key is again inserted to re-start the vehicle.
THE IMMOBILISER This is contained in a steel box 6 (six) inches square, and a depth of 3 (three) inches approx. (Metric measurement: 150mm square, 75mm depth) the solenoid is placed and fixed in the middle 3 (three) inch elevation.
A magnetically operated rod has a circular aperture (12 mm diameter). The glass or plastic tube is inserted through the fissure.
When the magnetic switch is energised, the rod ruptures the tube. The mercury then flows out into a plastic tray (for re-use). The vehicle is now immobilised.
ELECTROMECHANICAL IMMOBILISER FOR DIESEL ENGINES FUEL LINE FRACTURE AND BREAK THE PRINCIPLE OF THE SYSTEM A steel or plastic container 6 (six) inches square by 3 (three) inches depth. A solenoid is fixed (bolted) in the centre of the three inch elevation. The magnetically operated rod has a circular cross (10mum diameter) aperture. The glass or plastic rod is inserted through the aperture. Upon energising the solenoid, the rod ruptures the tube. This forming part of the fuel supply to the engine, it stops due to lack of fuel, and the vehicle is immobilised.
When this system is used on any type of Diesel engine, the engine cannot be started without the aid of a workshop to replace the box and restart the engine. Time being of the essence to implement a theft, the theft is rendered unviable because it will take two or more hours to replace the "immobiliser" and restart the engine.

Claims (1)

  1. This invention relates to an electromechanical device that can be fitted to any car or diesel engined vehicle.
    The principle of the device is a solenoid magnetically operated lift rod (figure 5). The guillotine action on a glass or plastic tube (figure 6) filled with mercury push in connectors at either end. On the tube is ruptured the electrical power to ignition system is broken (figures 1 and 2). A relay contains part of the anti-theft device (figure 3) containing a personal number of the car owner.
    Should the ignition key be operated without the personal number being entered a red light will be illuminated. Further rotation activates the solenoid (figure 5). This section energizes an electronic force breaking the mercury-filled glass tube (figure 6) affecting complete immobilising of the engine. On replacement of the fuse and the correct personal number is entered into key electronic control module (figure 3) a green light becomes illuminated and the vehicle can then be activated. Withdrawal of the ignition key the vehicle is protected against theft.
GB9313271A 1993-06-28 1993-06-28 Vehicle anti-theft device Withdrawn GB2279404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9313271A GB2279404A (en) 1993-06-28 1993-06-28 Vehicle anti-theft device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9313271A GB2279404A (en) 1993-06-28 1993-06-28 Vehicle anti-theft device

Publications (2)

Publication Number Publication Date
GB9313271D0 GB9313271D0 (en) 1993-08-11
GB2279404A true GB2279404A (en) 1995-01-04

Family

ID=10737896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9313271A Withdrawn GB2279404A (en) 1993-06-28 1993-06-28 Vehicle anti-theft device

Country Status (1)

Country Link
GB (1) GB2279404A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996029217A1 (en) * 1995-03-17 1996-09-26 Daniel Desjardins Safe and valve or switch protection device
GB2313154A (en) * 1996-05-14 1997-11-19 Douglass Harrison Vehicle immobiliser with mechanism acting on engine flywheel

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143098A (en) * 1967-03-23 1969-02-19 Leigh Instr Ltd A crash position indicator for use with a vertical landing aircraft
US3845264A (en) * 1973-04-09 1974-10-29 Mechanical Enterprises Inc Switch with liquid containing tube for keyboard use
GB1420593A (en) * 1971-12-31 1976-01-07 Lucas Electrical Co Ltd Anti-theft warning systems for road vehicles
GB1543315A (en) * 1975-08-01 1979-04-04 Marconi Co Ltd Machines including devices for monitoring the separation between two relatively moving parts
US4200779A (en) * 1977-09-06 1980-04-29 Moscovsky Inzhenerno-Fizichesky Institut Device for switching electrical circuits
GB2092665A (en) * 1981-02-09 1982-08-18 Electro Products Ltd Indicating excessive engine or vehicle speeds
EP0083000A2 (en) * 1981-12-26 1983-07-06 Keiun Kodo Device for indicating the driving operation of the internal combustion engine of a motor vehicle
US4449605A (en) * 1981-03-23 1984-05-22 Read William A Device for preventing theft of motor vehicles
GB2200086A (en) * 1987-01-22 1988-07-27 David Rossleighy Chandler Vehicle-security system
WO1990003040A1 (en) * 1988-09-02 1990-03-22 Automotive Technologies International, Inc. Vehicle crush zone crash sensor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143098A (en) * 1967-03-23 1969-02-19 Leigh Instr Ltd A crash position indicator for use with a vertical landing aircraft
GB1420593A (en) * 1971-12-31 1976-01-07 Lucas Electrical Co Ltd Anti-theft warning systems for road vehicles
US3845264A (en) * 1973-04-09 1974-10-29 Mechanical Enterprises Inc Switch with liquid containing tube for keyboard use
GB1543315A (en) * 1975-08-01 1979-04-04 Marconi Co Ltd Machines including devices for monitoring the separation between two relatively moving parts
US4200779A (en) * 1977-09-06 1980-04-29 Moscovsky Inzhenerno-Fizichesky Institut Device for switching electrical circuits
GB2092665A (en) * 1981-02-09 1982-08-18 Electro Products Ltd Indicating excessive engine or vehicle speeds
US4449605A (en) * 1981-03-23 1984-05-22 Read William A Device for preventing theft of motor vehicles
EP0083000A2 (en) * 1981-12-26 1983-07-06 Keiun Kodo Device for indicating the driving operation of the internal combustion engine of a motor vehicle
GB2200086A (en) * 1987-01-22 1988-07-27 David Rossleighy Chandler Vehicle-security system
WO1990003040A1 (en) * 1988-09-02 1990-03-22 Automotive Technologies International, Inc. Vehicle crush zone crash sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996029217A1 (en) * 1995-03-17 1996-09-26 Daniel Desjardins Safe and valve or switch protection device
GB2313154A (en) * 1996-05-14 1997-11-19 Douglass Harrison Vehicle immobiliser with mechanism acting on engine flywheel
GB2313154B (en) * 1996-05-14 1998-07-01 Douglass Harrison Vehicle immobiliser

Also Published As

Publication number Publication date
GB9313271D0 (en) 1993-08-11

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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)