GB1213168A - Vibration-responsive detector device for alarm systems - Google Patents

Vibration-responsive detector device for alarm systems

Info

Publication number
GB1213168A
GB1213168A GB4085967A GB4085967A GB1213168A GB 1213168 A GB1213168 A GB 1213168A GB 4085967 A GB4085967 A GB 4085967A GB 4085967 A GB4085967 A GB 4085967A GB 1213168 A GB1213168 A GB 1213168A
Authority
GB
United Kingdom
Prior art keywords
spring
vibration
detector device
sept
alarm 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
GB4085967A
Inventor
Peter John Eyre
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 GB4085967A priority Critical patent/GB1213168A/en
Publication of GB1213168A publication Critical patent/GB1213168A/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
    • G08B13/04—Mechanical actuation by breaking of glass

Landscapes

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

Abstract

1,213,168. Burglar alarms. P. J. EYRE. 9 Sept., 1968 [7 Sept., 1967], No. 40859/67. Headings G4F and G4N. A burglar alarm comprises a vibration sensitive switch, having a spring-loaded locking mechanism. In Fig. 2 forked leaf 7 and leaf 8 are held in their respective positions by spring 9 such that contacts 10 and 11 are made. Vibrations (e.g. from the breaking of a window) cause 7 to vibrate and in moving upwards to lock open contacts 10, 11 by means of spring 9, and helped by permanent magnet 17. Bolt 16, inserted in sensitivity determining weight 10, indicates by its prominence which of several such switches installed at doors, windows &c. operated the common alarm.
GB4085967A 1967-09-07 1967-09-07 Vibration-responsive detector device for alarm systems Expired GB1213168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4085967A GB1213168A (en) 1967-09-07 1967-09-07 Vibration-responsive detector device for alarm systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4085967A GB1213168A (en) 1967-09-07 1967-09-07 Vibration-responsive detector device for alarm systems

Publications (1)

Publication Number Publication Date
GB1213168A true GB1213168A (en) 1970-11-18

Family

ID=10416969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4085967A Expired GB1213168A (en) 1967-09-07 1967-09-07 Vibration-responsive detector device for alarm systems

Country Status (1)

Country Link
GB (1) GB1213168A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2316671A1 (en) * 1975-06-18 1977-01-28 Hokuseki Sangyo Kk SOLID BODY FRACTURE DETECTOR
GB2260648A (en) * 1991-10-16 1993-04-21 John Mfg Ltd Sensor switch sensitive to a change in movement
CN105957284A (en) * 2016-06-21 2016-09-21 太仓市美斯门窗有限公司 Intelligent antitheft alarm door and window

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2316671A1 (en) * 1975-06-18 1977-01-28 Hokuseki Sangyo Kk SOLID BODY FRACTURE DETECTOR
GB2260648A (en) * 1991-10-16 1993-04-21 John Mfg Ltd Sensor switch sensitive to a change in movement
US5321390A (en) * 1991-10-16 1994-06-14 John Manufacturing Limited Sensor switch
GB2260648B (en) * 1991-10-16 1995-05-17 John Mfg Ltd Sensor switch and a portable device sensitive to a change in movement
CN105957284A (en) * 2016-06-21 2016-09-21 太仓市美斯门窗有限公司 Intelligent antitheft alarm door and window

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Legal Events

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