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GB2347215B - Glass breakage detecting device - Google Patents

Glass breakage detecting device

Info

Publication number
GB2347215B
GB2347215B GB0013763A GB0013763A GB2347215B GB 2347215 B GB2347215 B GB 2347215B GB 0013763 A GB0013763 A GB 0013763A GB 0013763 A GB0013763 A GB 0013763A GB 2347215 B GB2347215 B GB 2347215B
Authority
GB
United Kingdom
Prior art keywords
detecting device
glass breakage
breakage detecting
glass
detecting
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 - Fee Related
Application number
GB0013763A
Other versions
GB0013763D0 (en
GB2347215A (en
Inventor
Hirotugu Ishino
Akira Kurahashi
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.)
Denso Corp
Original Assignee
Denso Corp
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 JP8355074A external-priority patent/JPH09297892A/en
Application filed by Denso Corp filed Critical Denso Corp
Publication of GB0013763D0 publication Critical patent/GB0013763D0/en
Publication of GB2347215A publication Critical patent/GB2347215A/en
Application granted granted Critical
Publication of GB2347215B publication Critical patent/GB2347215B/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
    • G08B13/02—Mechanical actuation
    • G08B13/04—Mechanical actuation by breaking of glass
    • 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
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Burglar Alarm Systems (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB0013763A 1996-03-08 1997-03-07 Glass breakage detecting device Expired - Fee Related GB2347215B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8084496 1996-03-08
JP8084396 1996-03-08
JP8355074A JPH09297892A (en) 1996-03-08 1996-12-20 Glass cracking detector
GB9704801A GB2310928B (en) 1996-03-08 1997-03-07 Glass breakage detecting device

Publications (3)

Publication Number Publication Date
GB0013763D0 GB0013763D0 (en) 2000-07-26
GB2347215A GB2347215A (en) 2000-08-30
GB2347215B true GB2347215B (en) 2000-10-11

Family

ID=27451611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0013763A Expired - Fee Related GB2347215B (en) 1996-03-08 1997-03-07 Glass breakage detecting device

Country Status (1)

Country Link
GB (1) GB2347215B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4837558A (en) * 1987-10-13 1989-06-06 Sentrol, Inc. Glass break detector
US5515029A (en) * 1993-12-01 1996-05-07 Visonic Ltd. Glass breakage detector
US5552770A (en) * 1994-04-08 1996-09-03 Detection Systems, Inc. Glass break detection using multiple frequency ranges

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4837558A (en) * 1987-10-13 1989-06-06 Sentrol, Inc. Glass break detector
US5515029A (en) * 1993-12-01 1996-05-07 Visonic Ltd. Glass breakage detector
US5552770A (en) * 1994-04-08 1996-09-03 Detection Systems, Inc. Glass break detection using multiple frequency ranges

Also Published As

Publication number Publication date
GB0013763D0 (en) 2000-07-26
GB2347215A (en) 2000-08-30

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Legal Events

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

Effective date: 20090307