GB1539928A - Apparatus for detecting the breakage of a glass sheet - Google Patents

Apparatus for detecting the breakage of a glass sheet

Info

Publication number
GB1539928A
GB1539928A GB2227376A GB2227376A GB1539928A GB 1539928 A GB1539928 A GB 1539928A GB 2227376 A GB2227376 A GB 2227376A GB 2227376 A GB2227376 A GB 2227376A GB 1539928 A GB1539928 A GB 1539928A
Authority
GB
United Kingdom
Prior art keywords
breakage
detecting
glass sheet
glass
sheet
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
GB2227376A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 JP1975072789U external-priority patent/JPS51152349U/ja
Priority claimed from JP10410575U external-priority patent/JPS5218683U/ja
Priority claimed from JP9402075A external-priority patent/JPS5217881A/en
Priority claimed from JP50100412A external-priority patent/JPS5223983A/en
Priority claimed from JP50101354A external-priority patent/JPS5224574A/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1539928A publication Critical patent/GB1539928A/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
    • 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
    • G08B13/02—Mechanical actuation
    • G08B13/04—Mechanical actuation by breaking of glass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
GB2227376A 1975-05-29 1976-05-28 Apparatus for detecting the breakage of a glass sheet Expired GB1539928A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP1975072789U JPS51152349U (en) 1975-05-29 1975-05-29
JP10410575U JPS5218683U (en) 1975-07-29 1975-07-29
JP9402075A JPS5217881A (en) 1975-07-31 1975-07-31 Medium destruction detector for glass sheets, etc.
JP50100412A JPS5223983A (en) 1975-08-18 1975-08-18 Breakage detector
JP50101354A JPS5224574A (en) 1975-08-20 1975-08-20 Apparatus for detection of breakage of media such as glass plates, etc .

Publications (1)

Publication Number Publication Date
GB1539928A true GB1539928A (en) 1979-02-07

Family

ID=27524408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2227376A Expired GB1539928A (en) 1975-05-29 1976-05-28 Apparatus for detecting the breakage of a glass sheet

Country Status (3)

Country Link
DE (1) DE2624035C3 (en)
FR (1) FR2312827A1 (en)
GB (1) GB1539928A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938968A1 (en) * 1979-09-26 1981-07-02 Siemens AG, 1000 Berlin und 8000 München ALARM SYSTEM FOR THE PROTECTION OF GLASS AREAS, ESPECIALLY WINDOW DISPLAYS
DE3027283A1 (en) * 1980-07-18 1982-02-11 ABM Elektronik GmbH, 8000 München Alarm system for glass window panes - has ultrasonic transmission through pane to discriminator circuit coupled to alarm
ATE38573T1 (en) * 1984-04-30 1988-11-15 Fuss Fritz Gmbh & Co GLASS BREAKAGE SENSOR.
SE456951B (en) * 1987-03-06 1988-11-14 Lars Eriksson ALARM DEVICE STEPPED BY A WINDOW CONSTRUCTION AND INCLUDING AT LEAST ONE TRANSMITTER OF ULTRA SOUND

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1186044A (en) * 1967-04-25 1970-04-02 Electronic Lab Ltd Formerly El Alarm Circuit
DE2127562B2 (en) * 1971-06-03 1979-05-23 Spirig, Ernst, Dipl.-Ing., Rapperswil (Schweiz) Alarm for glass breakage - uses piezoelectric pick=up to detect sound waves generated due to fracturing of glass pane
CH557068A (en) * 1973-07-10 1974-12-13 Cerberus Ag METHOD AND DEVICE FOR MONITORING AT LEAST ONE CONDUCTIVE MEDIUM.

Also Published As

Publication number Publication date
FR2312827B1 (en) 1978-08-25
DE2624035A1 (en) 1976-12-02
DE2624035C3 (en) 1979-02-22
FR2312827A1 (en) 1976-12-24
DE2624035B2 (en) 1978-06-29

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Legal Events

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

Effective date: 19950528