GB8628565D0 - Intruder alarm systems - Google Patents

Intruder alarm systems

Info

Publication number
GB8628565D0
GB8628565D0 GB868628565A GB8628565A GB8628565D0 GB 8628565 D0 GB8628565 D0 GB 8628565D0 GB 868628565 A GB868628565 A GB 868628565A GB 8628565 A GB8628565 A GB 8628565A GB 8628565 D0 GB8628565 D0 GB 8628565D0
Authority
GB
United Kingdom
Prior art keywords
alarm systems
intruder alarm
intruder
systems
alarm
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
GB868628565A
Other versions
GB2184277A (en
GB2184277B (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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 GB858530560A external-priority patent/GB8530560D0/en
Application filed by Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB8628565A priority Critical patent/GB2184277B/en
Publication of GB8628565D0 publication Critical patent/GB8628565D0/en
Publication of GB2184277A publication Critical patent/GB2184277A/en
Application granted granted Critical
Publication of GB2184277B publication Critical patent/GB2184277B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B15/00—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives
GB8628565A 1985-12-12 1986-11-28 Intruder alarm systems and methods of deterring intruders Expired - Fee Related GB2184277B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8628565A GB2184277B (en) 1985-12-12 1986-11-28 Intruder alarm systems and methods of deterring intruders

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858530560A GB8530560D0 (en) 1985-12-12 1985-12-12 Intruder alarms
GB8628565A GB2184277B (en) 1985-12-12 1986-11-28 Intruder alarm systems and methods of deterring intruders

Publications (3)

Publication Number Publication Date
GB8628565D0 true GB8628565D0 (en) 1987-01-07
GB2184277A GB2184277A (en) 1987-06-17
GB2184277B GB2184277B (en) 1990-02-07

Family

ID=26290104

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8628565A Expired - Fee Related GB2184277B (en) 1985-12-12 1986-11-28 Intruder alarm systems and methods of deterring intruders

Country Status (1)

Country Link
GB (1) GB2184277B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266799A (en) * 1992-04-22 1993-11-10 Albert Hala Intruder warning alarm system
SE9301206L (en) * 1993-04-08 1994-10-09 Goeran Hansson Monitoring method and device at glass pane
AUPM282493A0 (en) * 1993-12-06 1994-01-06 Robert Bosch (Australia) Proprietary Ltd. A siren unit
JP2005249707A (en) * 2004-03-08 2005-09-15 Optex Co Ltd Sensor system and sensor device used for sensor system, and receiving device
EP1891614A1 (en) 2005-06-06 2008-02-27 Koninklijke Philips Electronics N.V. Security lighting system and method, and control unit therefore
SE0701062L (en) * 2007-05-03 2008-11-04 Indusec Ab Method and apparatus for preventing intrusion
US20090040318A1 (en) * 2007-08-09 2009-02-12 Michael John Brosnan Image stabilization with user feedback
NL1037342C2 (en) * 2009-10-02 2011-04-05 Inventor Invest Holding B V SECURITY SYSTEM AND METHOD FOR PROTECTING AN AREA.
GB2476292B (en) * 2009-12-18 2015-02-11 Applied Concepts Ltd Intruder deterrent systems
US10777057B1 (en) * 2017-11-30 2020-09-15 Amazon Technologies, Inc. Premises security system with audio simulating occupancy

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2047405B (en) * 1979-03-29 1983-09-01 Craven G C Proximity warning devices for vehicles
GB2090410A (en) * 1980-12-30 1982-07-07 Star Products Ltd Measuring distance
GB2112520A (en) * 1981-11-18 1983-07-20 Anthony David Heyes Vehicle manoeuvring aid
GB2153124A (en) * 1984-01-09 1985-08-14 Toole Terence Edwin O Apparatus for sensing the distance between two bodies, one of which is moving relative to the other

Also Published As

Publication number Publication date
GB2184277A (en) 1987-06-17
GB2184277B (en) 1990-02-07

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Legal Events

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