GB1351559A - Secret electrical switching device for switching on and off an alarm system - Google Patents

Secret electrical switching device for switching on and off an alarm system

Info

Publication number
GB1351559A
GB1351559A GB4944672A GB4944672A GB1351559A GB 1351559 A GB1351559 A GB 1351559A GB 4944672 A GB4944672 A GB 4944672A GB 4944672 A GB4944672 A GB 4944672A GB 1351559 A GB1351559 A GB 1351559A
Authority
GB
United Kingdom
Prior art keywords
button
switching
actuation
relay
switched
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
GB4944672A
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.)
Securiton AG
Original Assignee
Securiton AG
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 Securiton AG filed Critical Securiton AG
Publication of GB1351559A publication Critical patent/GB1351559A/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
    • G08B13/22—Electrical actuation
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/10—Monitoring of the annunciator circuits

Abstract

1351559 Intruder alarms SECURITON AG 26 Oct 1972 [15 Nov 1971] 49446/72 Heading G4N A secret switching device for switching on and off an alarm system comprises a plurality of push buttons 1a ... 8a, and means 21 for indicating that the system is switched on, the arrangement being such that the indicator 21 is energized when the correct button for switching on the system is operated, and is de-energized when any other button is operated. In the arrangement shown in Fig. 2, the system is switched on by actuation of button 8 and is switched off by actuation of buttons 6 and 4 in that order. To switch on, switch 9a is closed and button 8 operated to apply a reset signal to bistable 12 which releases relay 22 to close contacts 23 in the alarm circuit. Operation of button 8 also applies a set signal to bi-stable 10 which energizes relay 16 to close contacts 17 and energize lamp 21. Subsequent operation of any other button will apply a reset signal to bistable 10, releasing relay 16 and de-energizing lamp 21. Actuation of button 6 sets bi-stable 11 to apply an enable signal to AND gate 15 so that a subsequent actuation of button 4 will set bi-stable 12 energizing relay 22 to open contacts 23.
GB4944672A 1971-11-15 1972-10-26 Secret electrical switching device for switching on and off an alarm system Expired GB1351559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1654771A CH544978A (en) 1971-11-15 1971-11-15 Electric secret switching device for switching an alarm system on and off

Publications (1)

Publication Number Publication Date
GB1351559A true GB1351559A (en) 1974-05-01

Family

ID=4418279

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4944672A Expired GB1351559A (en) 1971-11-15 1972-10-26 Secret electrical switching device for switching on and off an alarm system

Country Status (3)

Country Link
CH (1) CH544978A (en)
FR (1) FR2160401B1 (en)
GB (1) GB1351559A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150333A (en) * 1983-10-26 1985-06-26 George Shayne James Brownett Equipment for producing an indication for use in disabling a system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441808A (en) * 1965-10-23 1969-04-29 Charles V Crane Electronic door lock and supervisory system
US3513466A (en) * 1967-01-30 1970-05-19 Roger H Isaacs Protective alarm system
US3544987A (en) * 1967-02-24 1970-12-01 Renville H Mcmann Jr Property protection alarm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150333A (en) * 1983-10-26 1985-06-26 George Shayne James Brownett Equipment for producing an indication for use in disabling a system

Also Published As

Publication number Publication date
DE2241739A1 (en) 1973-05-24
FR2160401B1 (en) 1978-05-26
DE2241739B2 (en) 1976-11-18
CH544978A (en) 1973-11-30
FR2160401A1 (en) 1973-06-29

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Legal Events

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