FR2331848A1 - Procede et dispositif pour la surveillance des parois vitrees et analogues - Google Patents

Procede et dispositif pour la surveillance des parois vitrees et analogues

Info

Publication number
FR2331848A1
FR2331848A1 FR7535421A FR7535421A FR2331848A1 FR 2331848 A1 FR2331848 A1 FR 2331848A1 FR 7535421 A FR7535421 A FR 7535421A FR 7535421 A FR7535421 A FR 7535421A FR 2331848 A1 FR2331848 A1 FR 2331848A1
Authority
FR
France
Prior art keywords
window
glass
ultra sonic
detector
opposite corners
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
FR7535421A
Other languages
English (en)
Other versions
FR2331848B1 (fr
Inventor
Fereydoun Lakestani
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7535421A priority Critical patent/FR2331848A1/fr
Publication of FR2331848A1 publication Critical patent/FR2331848A1/fr
Application granted granted Critical
Publication of FR2331848B1 publication Critical patent/FR2331848B1/fr
Granted 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
    • G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
    • 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)
FR7535421A 1975-11-14 1975-11-14 Procede et dispositif pour la surveillance des parois vitrees et analogues Granted FR2331848A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7535421A FR2331848A1 (fr) 1975-11-14 1975-11-14 Procede et dispositif pour la surveillance des parois vitrees et analogues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7535421A FR2331848A1 (fr) 1975-11-14 1975-11-14 Procede et dispositif pour la surveillance des parois vitrees et analogues

Publications (2)

Publication Number Publication Date
FR2331848A1 true FR2331848A1 (fr) 1977-06-10
FR2331848B1 FR2331848B1 (fr) 1978-04-14

Family

ID=9162639

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535421A Granted FR2331848A1 (fr) 1975-11-14 1975-11-14 Procede et dispositif pour la surveillance des parois vitrees et analogues

Country Status (1)

Country Link
FR (1) FR2331848A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2056015A1 (de) * 1970-11-13 1972-05-25 Woerl A Verfahren und Vorrichtungen zur Alarmsicherung
DE2255250A1 (de) * 1971-12-03 1973-06-07 Cerberus Ag Anordnung zum schutz von schaukaesten, schaufenstern und vitrinen
DE2431999A1 (de) * 1973-10-15 1975-04-24 Gulf & Western Mfg Co Bruchdetektor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2056015A1 (de) * 1970-11-13 1972-05-25 Woerl A Verfahren und Vorrichtungen zur Alarmsicherung
DE2255250A1 (de) * 1971-12-03 1973-06-07 Cerberus Ag Anordnung zum schutz von schaukaesten, schaufenstern und vitrinen
DE2431999A1 (de) * 1973-10-15 1975-04-24 Gulf & Western Mfg Co Bruchdetektor

Also Published As

Publication number Publication date
FR2331848B1 (fr) 1978-04-14

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Legal Events

Date Code Title Description
ST Notification of lapse