GB9212381D0 - Intruder detector - Google Patents

Intruder detector

Info

Publication number
GB9212381D0
GB9212381D0 GB929212381A GB9212381A GB9212381D0 GB 9212381 D0 GB9212381 D0 GB 9212381D0 GB 929212381 A GB929212381 A GB 929212381A GB 9212381 A GB9212381 A GB 9212381A GB 9212381 D0 GB9212381 D0 GB 9212381D0
Authority
GB
United Kingdom
Prior art keywords
intruder detector
intruder
detector
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.)
Withdrawn
Application number
GB929212381A
Other versions
GB2259174A (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.)
Shorrock Ltd
Original Assignee
Shorrock 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
Priority claimed from GB919118746A external-priority patent/GB9118746D0/en
Application filed by Shorrock Ltd filed Critical Shorrock Ltd
Priority to GB9212381A priority Critical patent/GB2259174A/en
Publication of GB9212381D0 publication Critical patent/GB9212381D0/en
Publication of GB2259174A publication Critical patent/GB2259174A/en
Withdrawn legal-status Critical Current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
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
GB9212381A 1991-09-02 1992-06-11 An intruder detector Withdrawn GB2259174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9212381A GB2259174A (en) 1991-09-02 1992-06-11 An intruder detector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919118746A GB9118746D0 (en) 1991-09-02 1991-09-02 Intruder detector
GB9212381A GB2259174A (en) 1991-09-02 1992-06-11 An intruder detector

Publications (2)

Publication Number Publication Date
GB9212381D0 true GB9212381D0 (en) 1992-07-22
GB2259174A GB2259174A (en) 1993-03-03

Family

ID=26299479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9212381A Withdrawn GB2259174A (en) 1991-09-02 1992-06-11 An intruder detector

Country Status (1)

Country Link
GB (1) GB2259174A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2401974B (en) * 2003-05-17 2005-11-09 Smarta Systems Ltd Electronic safety control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2040093B (en) * 1979-01-27 1983-06-15 Shorrock Dev Instrusion detector
EP0045335A1 (en) * 1980-08-05 1982-02-10 Stellar Systems, Inc. E field balanced phase intrusion alarm
GB2155224B (en) * 1984-03-02 1987-11-18 Shorrock Security Systems Ltd Intrusion detection barrier
US4684931A (en) * 1985-05-14 1987-08-04 Sydney Parks Capacitive sensing security system

Also Published As

Publication number Publication date
GB2259174A (en) 1993-03-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)