DK405480A - ALARM SYSTEM FOR PROTECTING GLASS SPECIAL NAMES SHOWING WINDOWS - Google Patents

ALARM SYSTEM FOR PROTECTING GLASS SPECIAL NAMES SHOWING WINDOWS

Info

Publication number
DK405480A
DK405480A DK405480A DK405480A DK405480A DK 405480 A DK405480 A DK 405480A DK 405480 A DK405480 A DK 405480A DK 405480 A DK405480 A DK 405480A DK 405480 A DK405480 A DK 405480A
Authority
DK
Denmark
Prior art keywords
alarm system
protecting glass
special names
glass special
showing windows
Prior art date
Application number
DK405480A
Other languages
Danish (da)
Inventor
H Engel
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of DK405480A publication Critical patent/DK405480A/en

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Glass Compositions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
DK405480A 1979-09-26 1980-09-25 ALARM SYSTEM FOR PROTECTING GLASS SPECIAL NAMES SHOWING WINDOWS DK405480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792938968 DE2938968A1 (en) 1979-09-26 1979-09-26 ALARM SYSTEM FOR THE PROTECTION OF GLASS AREAS, ESPECIALLY WINDOW DISPLAYS

Publications (1)

Publication Number Publication Date
DK405480A true DK405480A (en) 1981-03-27

Family

ID=6081903

Family Applications (1)

Application Number Title Priority Date Filing Date
DK405480A DK405480A (en) 1979-09-26 1980-09-25 ALARM SYSTEM FOR PROTECTING GLASS SPECIAL NAMES SHOWING WINDOWS

Country Status (5)

Country Link
EP (1) EP0026383A1 (en)
DE (1) DE2938968A1 (en)
DK (1) DK405480A (en)
FI (1) FI803019A (en)
NO (1) NO802797L (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143976A (en) * 1983-07-14 1985-02-20 Shorrock Security Systems Ltd Window glass breakage detector apparatus
ATE38573T1 (en) * 1984-04-30 1988-11-15 Fuss Fritz Gmbh & Co GLASS BREAKAGE SENSOR.
DE3434737A1 (en) * 1984-09-21 1986-04-03 Siemens AG, 1000 Berlin und 8000 München MONITORING DEVICE FOR BARS OF A FENCE OR GROSS SCORING
NL8700110A (en) * 1987-01-19 1988-08-16 Philips Nv MONITORING DEVICE EQUIPPED WITH MEANS FOR CODING PHASE SHIFT IN A MEASURING SIGNAL TRANSPORTED BY THE MEDIUM TO BE MONITORED.
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
EP1002922A3 (en) * 1998-11-18 2002-03-06 Delphi Technologies, Inc. Device to protect against jamming limbs in power windows in motor vehicles
US6388406B1 (en) * 1999-07-30 2002-05-14 Maritor Light Vehicle Systems, Inc. Method and system for detecting an object in the path of a vehicle power window system using acoustic signals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312827A1 (en) * 1975-05-29 1976-12-24 Matsushita Electric Ind Co Ltd GLASS BREAK DETECTOR
DE2541764A1 (en) * 1975-09-19 1977-03-24 Philips Patentverwaltung Window glass breakage ultrasonic SENSOR - uses carrier and pulse signal to transmitter to provide protection against external disturbances

Also Published As

Publication number Publication date
EP0026383A1 (en) 1981-04-08
DE2938968A1 (en) 1981-07-02
FI803019A (en) 1981-03-27
NO802797L (en) 1981-03-27

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