GB8517670D0 - Detection device - Google Patents

Detection device

Info

Publication number
GB8517670D0
GB8517670D0 GB858517670A GB8517670A GB8517670D0 GB 8517670 D0 GB8517670 D0 GB 8517670D0 GB 858517670 A GB858517670 A GB 858517670A GB 8517670 A GB8517670 A GB 8517670A GB 8517670 D0 GB8517670 D0 GB 8517670D0
Authority
GB
United Kingdom
Prior art keywords
detection device
detection
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.)
Granted
Application number
GB858517670A
Other versions
GB2177797A (en
GB2177797B (en
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.)
Hwang S M
Original Assignee
Hwang S M
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 Hwang S M filed Critical Hwang S M
Priority to GB8517670A priority Critical patent/GB2177797B/en
Publication of GB8517670D0 publication Critical patent/GB8517670D0/en
Publication of GB2177797A publication Critical patent/GB2177797A/en
Application granted granted Critical
Publication of GB2177797B publication Critical patent/GB2177797B/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
    • 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)
GB8517670A 1985-07-12 1985-07-12 An environmental interference detection device Expired GB2177797B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8517670A GB2177797B (en) 1985-07-12 1985-07-12 An environmental interference detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8517670A GB2177797B (en) 1985-07-12 1985-07-12 An environmental interference detection device

Publications (3)

Publication Number Publication Date
GB8517670D0 true GB8517670D0 (en) 1985-08-21
GB2177797A GB2177797A (en) 1987-01-28
GB2177797B GB2177797B (en) 1989-07-26

Family

ID=10582207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8517670A Expired GB2177797B (en) 1985-07-12 1985-07-12 An environmental interference detection device

Country Status (1)

Country Link
GB (1) GB2177797B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851301A (en) * 1972-09-15 1974-11-26 Kidde & Co Walter Method and apparatus for balancing an ultrasonic detection system
GB2137749A (en) * 1983-04-07 1984-10-10 Healey Meters Limited Intruder Detection System
GB2175425B (en) * 1985-05-17 1988-10-19 Gec Avionics Intruder alarm system

Also Published As

Publication number Publication date
GB2177797A (en) 1987-01-28
GB2177797B (en) 1989-07-26

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Legal Events

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

Effective date: 20000712