GB639693A - Improvements relating to burglar and like alarms for motor vehicles - Google Patents

Improvements relating to burglar and like alarms for motor vehicles

Info

Publication number
GB639693A
GB639693A GB156748A GB156748A GB639693A GB 639693 A GB639693 A GB 639693A GB 156748 A GB156748 A GB 156748A GB 156748 A GB156748 A GB 156748A GB 639693 A GB639693 A GB 639693A
Authority
GB
United Kingdom
Prior art keywords
circuit
switch
alarm
vehicle
lamp
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
GB156748A
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 GB156748A priority Critical patent/GB639693A/en
Publication of GB639693A publication Critical patent/GB639693A/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
    • B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
    • B60R25/1004—Alarm systems characterised by the type of sensor, e.g. current sensing means
    • B60R25/1006—Mechanical sensors, e.g. pendulums
    • B60R25/1007—Mechanical sensors, e.g. pendulums comprising associated circuitry

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

639,693. Theft and like alarms. RUNBAKEN, J. H. Jan. 19, 1948, No. 1567. [Class 118 (i)] In a vehicle-theft alarm device of the type in which a switch a disposed transversely of the vehicle is tilted by a person on entering the vehicle and closes a circuit including an alarm g, a thermal delay switch h, i, f is provided which, when energized, interrupts the circuit to the alarm to enable the driver to alight after setting the device and remakes the circuit on cooling. Before alighting, the driver operates push. button switch k, thereby completing the circuit for coil h, heating bimetallic element and causing normally-closed contacts f to open for a short period. To check the operation of switches a and f, switch b is set to include lamp d in the circuit. The lamp normally glows dimly, but flashes brightly when switch a short-circuits resistor e and extinguishes when switch f opens. The current with the lamp in circuit is insufficient to operate the alarm. Resistor e is also adjusted to pass insufficient current to operate the alarm.
GB156748A 1948-01-19 1948-01-19 Improvements relating to burglar and like alarms for motor vehicles Expired GB639693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB156748A GB639693A (en) 1948-01-19 1948-01-19 Improvements relating to burglar and like alarms for motor vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB156748A GB639693A (en) 1948-01-19 1948-01-19 Improvements relating to burglar and like alarms for motor vehicles

Publications (1)

Publication Number Publication Date
GB639693A true GB639693A (en) 1950-07-05

Family

ID=9724221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB156748A Expired GB639693A (en) 1948-01-19 1948-01-19 Improvements relating to burglar and like alarms for motor vehicles

Country Status (1)

Country Link
GB (1) GB639693A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460815A1 (en) * 1979-07-13 1981-01-30 Felten & Guilleaume Gmbh ANTI-THEFT SECURITY FOR MOTOR VEHICLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460815A1 (en) * 1979-07-13 1981-01-30 Felten & Guilleaume Gmbh ANTI-THEFT SECURITY FOR MOTOR VEHICLE

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