GB1357296A - Alarm triggering device - Google Patents

Alarm triggering device

Info

Publication number
GB1357296A
GB1357296A GB3294572A GB3294572A GB1357296A GB 1357296 A GB1357296 A GB 1357296A GB 3294572 A GB3294572 A GB 3294572A GB 3294572 A GB3294572 A GB 3294572A GB 1357296 A GB1357296 A GB 1357296A
Authority
GB
United Kingdom
Prior art keywords
alarm
magnets
transducer
lid
triggering device
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
GB3294572A
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.)
Fichet Bauche SA
Original Assignee
Fichet Bauche SA
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 Fichet Bauche SA filed Critical Fichet Bauche SA
Publication of GB1357296A publication Critical patent/GB1357296A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

1357296 Antitheft alarms FICHETBAUCHE 14 July 1972 [27 Aug 1971] 32945/72 Heading G4N An alarm device comprises: a box 1; a transducer 10 of the moving coil type generating an e.m.f. when subjected to vibration; an electronic unit 60 connected between the transducer and an alarm indicator; and a lid 2 shaped to receive magnetic elements, Figs. 3, 4 (not shown), for removably attaching the device to an object to be protected. The device also includes reed switches 55, co-operating with the magnets, which are actuated if the lid is removed, or if the device is removed from the object to which it is attached by the magnets. The electronic circuit comprises an amplifier for amplifying the output sufficiently to actuate a relay and delay circuit for delaying the alarm signal. The device may include a test arrangement, Fig. 2 (not shown), which comprises a buzzer (82) which produces mechanical vibrations.
GB3294572A 1971-08-27 1972-07-14 Alarm triggering device Expired GB1357296A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7131198A FR2150596B3 (en) 1971-08-27 1971-08-27

Publications (1)

Publication Number Publication Date
GB1357296A true GB1357296A (en) 1974-06-19

Family

ID=9082288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3294572A Expired GB1357296A (en) 1971-08-27 1972-07-14 Alarm triggering device

Country Status (3)

Country Link
DE (1) DE2241489A1 (en)
FR (1) FR2150596B3 (en)
GB (1) GB1357296A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211645A (en) * 1987-04-27 1989-07-05 Wu Shuenn Shing Storage container for valuables

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2281609A1 (en) * 1974-08-07 1976-03-05 Guterman Charles Vibration detector for vehicle theft alarm - has inhibitor passing electric signals above set level to alarm actuator
DE9319164U1 (en) * 1993-12-14 1995-04-13 Robert Bosch Gmbh, 70469 Stuttgart Detector for a room surveillance arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211645A (en) * 1987-04-27 1989-07-05 Wu Shuenn Shing Storage container for valuables

Also Published As

Publication number Publication date
FR2150596A1 (en) 1973-04-13
DE2241489A1 (en) 1973-03-08
FR2150596B3 (en) 1974-05-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee