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GB1259941A - Anit-thief device for engines relying on a source of electrical supply for their operation - Google Patents

Anit-thief device for engines relying on a source of electrical supply for their operation

Info

Publication number
GB1259941A
GB1259941A GB1731468A GB1731468A GB1259941A GB 1259941 A GB1259941 A GB 1259941A GB 1731468 A GB1731468 A GB 1731468A GB 1731468 A GB1731468 A GB 1731468A GB 1259941 A GB1259941 A GB 1259941A
Authority
GB
United Kingdom
Prior art keywords
thyristor
switch
circuit
closure
anit
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
GB1731468A
Inventor
Thomas John Barry
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.)
TOOLING SERVICE Ltd
Original Assignee
TOOLING SERVICE 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 TOOLING SERVICE Ltd filed Critical TOOLING SERVICE Ltd
Priority to GB1731468A priority Critical patent/GB1259941A/en
Publication of GB1259941A publication Critical patent/GB1259941A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

1,259,941. Preventing unauthorized use of vehicles. TOOLING SERVICE Ltd. 25 March, 1969 [10 April, 1968], No. 17314/68. Heading B7J. [Also in Division F1] Unauthorized starting of the driving motor of an electrically propelled vehicle is prevented by a circuit for controlling the starting and containing a first manually operable switch for opening and closing the circuit and a thyristor, and a second manually operable switch between the gate of the thyristor and an earth or return connection, closure of the second switch when the first switch is closed causing the thyristor to become conductive so as to fully close the circuit. Closure of a control switch 2 does not energize the driving motor until a secret switch 12 (which may be a push-button switch for momentary operation) is also operated to apply a forward voltage to the gate 5 of a thyristor 4, thereby rendering the thyristor conductive to complete the circuit. A resistor 7 ensures that the current through the thyristor does not fall below the hold value.
GB1731468A 1968-04-10 1968-04-10 Anit-thief device for engines relying on a source of electrical supply for their operation Expired GB1259941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1731468A GB1259941A (en) 1968-04-10 1968-04-10 Anit-thief device for engines relying on a source of electrical supply for their operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1731468A GB1259941A (en) 1968-04-10 1968-04-10 Anit-thief device for engines relying on a source of electrical supply for their operation

Publications (1)

Publication Number Publication Date
GB1259941A true GB1259941A (en) 1972-01-12

Family

ID=10093007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1731468A Expired GB1259941A (en) 1968-04-10 1968-04-10 Anit-thief device for engines relying on a source of electrical supply for their operation

Country Status (1)

Country Link
GB (1) GB1259941A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233950A (en) * 1979-04-24 1980-11-18 Tecumseh Products Company Safety interlock for an engine ignition system
GB2128674A (en) * 1982-10-21 1984-05-02 Liow Chou Chin Car fuel supply cut-off for the prevention of theft
US4945872A (en) * 1988-08-19 1990-08-07 Embry Paul E Theft prevention apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233950A (en) * 1979-04-24 1980-11-18 Tecumseh Products Company Safety interlock for an engine ignition system
GB2128674A (en) * 1982-10-21 1984-05-02 Liow Chou Chin Car fuel supply cut-off for the prevention of theft
US4945872A (en) * 1988-08-19 1990-08-07 Embry Paul E Theft prevention apparatus

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees