DE3173358D1 - Improvements relating to security alarm systems - Google Patents

Improvements relating to security alarm systems

Info

Publication number
DE3173358D1
DE3173358D1 DE8181303291T DE3173358T DE3173358D1 DE 3173358 D1 DE3173358 D1 DE 3173358D1 DE 8181303291 T DE8181303291 T DE 8181303291T DE 3173358 T DE3173358 T DE 3173358T DE 3173358 D1 DE3173358 D1 DE 3173358D1
Authority
DE
Germany
Prior art keywords
improvements relating
alarm systems
security alarm
security
systems
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
DE8181303291T
Other languages
German (de)
Inventor
Jack Youens
Rodney Edward Charles White
David John Tizard
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.)
Weyrad Electronics Ltd
Original Assignee
Weyrad Electronics 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 Weyrad Electronics Ltd filed Critical Weyrad Electronics Ltd
Application granted granted Critical
Publication of DE3173358D1 publication Critical patent/DE3173358D1/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
    • G08B13/02—Mechanical actuation
    • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
    • G08B13/126—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a housing, e.g. a box, a safe, or a room
    • 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)
  • Alarm Systems (AREA)
DE8181303291T 1980-07-19 1981-07-17 Improvements relating to security alarm systems Expired DE3173358D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8023674 1980-07-19

Publications (1)

Publication Number Publication Date
DE3173358D1 true DE3173358D1 (en) 1986-02-13

Family

ID=10514898

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181303291T Expired DE3173358D1 (en) 1980-07-19 1981-07-17 Improvements relating to security alarm systems

Country Status (2)

Country Link
EP (1) EP0044725B1 (en)
DE (1) DE3173358D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA827956B (en) * 1982-11-01 1983-07-27 Harry John Marston Portable security alarm
DE3347483A1 (en) * 1983-12-29 1985-07-11 GAO Gesellschaft für Automation und Organisation mbH, 8000 München DEVICE FOR SECURING SECRET INFORMATION
GB8531002D0 (en) * 1985-12-17 1986-01-29 Weyrad Electronics Ltd Alarm systems
FR2778690B1 (en) * 1998-05-15 2000-07-28 Parcomm Ind WINDOW CHASSIS WITH INTEGRATED ALARM MODULE
EP1657689A3 (en) 2004-11-11 2007-08-29 BLACK & DECKER INC. Wireless intrusion sensor for a container
EP1939828A3 (en) * 2004-11-11 2008-11-19 Black & Decker, Inc. Wireless intrusion sensor for a container

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032909A (en) * 1975-07-07 1977-06-28 Eugene E. Karsten Arrangement for testing an alarm system and method
DE2600798C3 (en) * 1976-01-10 1978-06-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Method and circuit arrangement for functional testing of geophones which are arranged in monitoring systems or for functional testing of monitoring systems
US4138674A (en) * 1977-02-22 1979-02-06 Contronic Controls Limited Four wire multi-satellite intrusion alarm control system with tamper switch
US4191946A (en) * 1977-10-20 1980-03-04 Gonzalez Raymond J Warning apparatus with a line integrity supervisory circuit
EP0011451A1 (en) * 1978-11-10 1980-05-28 Jack Youens Security alarm systems

Also Published As

Publication number Publication date
EP0044725A3 (en) 1982-02-03
EP0044725B1 (en) 1986-01-02
EP0044725A2 (en) 1982-01-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee