BE687478A - - Google Patents

Info

Publication number
BE687478A
BE687478A BE687478DA BE687478A BE 687478 A BE687478 A BE 687478A BE 687478D A BE687478D A BE 687478DA BE 687478 A BE687478 A BE 687478A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE687478A publication Critical patent/BE687478A/xx

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
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • 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
BE687478D 1965-02-15 1966-09-28 BE687478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US432646A US3364477A (en) 1965-02-15 1965-02-15 Vault alarm system

Publications (1)

Publication Number Publication Date
BE687478A true BE687478A (en) 1967-03-28

Family

ID=23717016

Family Applications (1)

Application Number Title Priority Date Filing Date
BE687478D BE687478A (en) 1965-02-15 1966-09-28

Country Status (2)

Country Link
US (1) US3364477A (en)
BE (1) BE687478A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2352351A1 (en) * 1976-05-17 1977-12-16 Matsushita Electric Works Ltd DETECTION DEVICE TO DETECT VIBRATIONS OF A DESTRUCTIVE NATURE IN STRUCTURES
FR2523339A1 (en) * 1982-03-12 1983-09-16 Guglielmetti Vg Electro INFRA-SOUND VOLUMETRIC SENSOR DETECTION DEVICE AND INFRA-SOUND DETECTION METHOD

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1246264A (en) * 1967-11-30 1971-09-15 Elliott Brothers London Ltd Alarm system
US3579220A (en) * 1969-03-28 1971-05-18 Automatic Sprinkler Corp Alarm system
US3713127A (en) * 1970-10-16 1973-01-23 Trodyne Corp Acoustic emission crack monitor
DE3221997A1 (en) * 1982-06-11 1983-12-15 Securiton AG, 3052 Zollikofen, Bern DEVICE FOR MONITORING ARMORED ROOMS, ESPECIALLY SAFE AND CABINETS, AND FOR GENERATING AN ALARM SIGNAL WHEN A BURGLAR ATTEMPT IS TAKEN

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806082A (en) * 1952-10-31 1957-09-10 Woods Edward Farrington Means for detecting and indicating the activities of bees and conditions in beehives
US2799015A (en) * 1954-12-27 1957-07-09 Cons Electrodynamics Corp Vibration indicator
US3016457A (en) * 1957-09-30 1962-01-09 Gen Railway Signal Co Detection means for improperly lubricated journals
US3069672A (en) * 1958-06-10 1962-12-18 Westinghouse Electric Corp Motor starting noise measuring cirucit
US3134970A (en) * 1961-05-31 1964-05-26 American District Telegraph Co Alarm system
US3147467A (en) * 1961-09-07 1964-09-01 American District Telegraph Co Vibration detection vault alarm system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2352351A1 (en) * 1976-05-17 1977-12-16 Matsushita Electric Works Ltd DETECTION DEVICE TO DETECT VIBRATIONS OF A DESTRUCTIVE NATURE IN STRUCTURES
FR2523339A1 (en) * 1982-03-12 1983-09-16 Guglielmetti Vg Electro INFRA-SOUND VOLUMETRIC SENSOR DETECTION DEVICE AND INFRA-SOUND DETECTION METHOD
US4586031A (en) * 1982-03-12 1986-04-29 Electronique Guglielmetti V.G. Electronique Infra-sonic detector, and alarms including same

Also Published As

Publication number Publication date
US3364477A (en) 1968-01-16

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: AMERICAN DISTRICT TELEGRAPH CY

Effective date: 19860928