BR7305723D0 - PROCESS AND DEVICE FOR SECURITY OF ENCLOSURES - Google Patents

PROCESS AND DEVICE FOR SECURITY OF ENCLOSURES

Info

Publication number
BR7305723D0
BR7305723D0 BR5723/73A BR572373A BR7305723D0 BR 7305723 D0 BR7305723 D0 BR 7305723D0 BR 5723/73 A BR5723/73 A BR 5723/73A BR 572373 A BR572373 A BR 572373A BR 7305723 D0 BR7305723 D0 BR 7305723D0
Authority
BR
Brazil
Prior art keywords
enclosures
security
Prior art date
Application number
BR5723/73A
Other languages
Portuguese (pt)
Inventor
E Hossbach
Original Assignee
Romen Faser Kunststoff
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 Romen Faser Kunststoff filed Critical Romen Faser Kunststoff
Publication of BR7305723D0 publication Critical patent/BR7305723D0/en

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
    • G08B13/16—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
    • G08B13/1681—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using infrasonic detecting means, e.g. a microphone operating below the audible frequency range

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
BR5723/73A 1972-07-31 1973-07-27 PROCESS AND DEVICE FOR SECURITY OF ENCLOSURES BR7305723D0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2237613A DE2237613C3 (en) 1972-07-31 1972-07-31 Method and device for securing space

Publications (1)

Publication Number Publication Date
BR7305723D0 true BR7305723D0 (en) 1974-08-29

Family

ID=5852236

Family Applications (1)

Application Number Title Priority Date Filing Date
BR5723/73A BR7305723D0 (en) 1972-07-31 1973-07-27 PROCESS AND DEVICE FOR SECURITY OF ENCLOSURES

Country Status (9)

Country Link
US (1) US3898640A (en)
JP (1) JPS4980896A (en)
BR (1) BR7305723D0 (en)
DE (1) DE2237613C3 (en)
FR (1) FR2195017B3 (en)
GB (1) GB1420043A (en)
HU (1) HU167448B (en)
IT (1) IT991881B (en)
ZA (1) ZA734591B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229811A (en) * 1978-11-09 1980-10-21 General Electric Company Intrusion detection method and apparatus
US4260980A (en) * 1979-04-30 1981-04-07 Bates Mitchell G Blind spot detector for vehicles
FR2523339A1 (en) * 1982-03-12 1983-09-16 Guglielmetti Vg Electro INFRA-SOUND VOLUMETRIC SENSOR DETECTION DEVICE AND INFRA-SOUND DETECTION METHOD
GB8323685D0 (en) * 1983-09-03 1983-10-05 Gen Electric Co Plc Monitoring displacement
CH667932A5 (en) * 1985-05-24 1988-11-15 Cerberus Ag NEAR AREA MONITORING DEVICE WITH SOUND SOURCE.
DE3611184C1 (en) * 1986-04-03 1987-09-03 Hirschmann Radiotechnik Method and device for securing space
GB8617124D0 (en) * 1986-07-15 1986-08-20 Mace R J Vehicle protection apparatus
EP0286897A1 (en) * 1987-04-09 1988-10-19 Cerberus Ag Method and device for monitoring closed spaces
US5266905A (en) * 1992-05-29 1993-11-30 Audio Research Corporation Audio amplifier with amplified feedback
DE19740639C1 (en) * 1997-09-16 1999-07-22 Megamos F & G Sicherheit Ultrasound monitoring device for monitoring a motor vehicle interior
DE19749747A1 (en) * 1997-11-11 1999-05-12 Grundig Ag Car radio alarm system
GB9812842D0 (en) 1998-06-16 1998-08-12 Ncr Int Inc Automatic teller machines
US20080224863A1 (en) * 2005-10-07 2008-09-18 Harry Bachmann Method for Monitoring a Room and an Apparatus For Carrying Out the Method
KR101297409B1 (en) * 2009-12-14 2013-08-19 한국전자통신연구원 Sycurity system and method using measurement of acoustic field variation
US10741037B2 (en) * 2018-05-16 2020-08-11 Avaya Inc. Method and system for detecting inaudible sounds

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2071933A (en) * 1931-02-28 1937-02-23 Rca Corp Alarm system
US2031951A (en) * 1932-02-25 1936-02-25 Bell Telephone Labor Inc Burglar alarm system
US2400309A (en) * 1941-10-31 1946-05-14 Baldwin Co Oscillation generator
US2745089A (en) * 1954-01-19 1956-05-08 Isaac Ergas Burglar alarm and like warning systems
US2985018A (en) * 1956-10-22 1961-05-23 North American Aviation Inc Vibration wave distance measuring device
US3065455A (en) * 1958-10-07 1962-11-20 Wilfred Roth Detection apparatus
US3047850A (en) * 1959-08-12 1962-07-31 Mosler Res Products Inc Sonic space alarm
US3061829A (en) * 1959-12-14 1962-10-30 Diebold Inc Sonic alarm system
GB1169166A (en) * 1966-01-03 1969-10-29 Microtherm Ltd Improvements in or relating to Heating Apparatus
US3569924A (en) * 1969-03-19 1971-03-09 Dexter Mfg Co Ultrasonic detection system
US3725888A (en) * 1971-04-05 1973-04-03 Pyrotector Inc Detector system
US3721972A (en) * 1972-02-22 1973-03-20 Seabord Electric Ultrasonic burglar alarm system

Also Published As

Publication number Publication date
FR2195017B3 (en) 1976-07-09
DE2237613B2 (en) 1974-10-17
HU167448B (en) 1975-10-28
DE2237613A1 (en) 1974-03-07
JPS4980896A (en) 1974-08-05
FR2195017A1 (en) 1974-03-01
IT991881B (en) 1975-08-30
DE2237613C3 (en) 1975-05-28
GB1420043A (en) 1976-01-07
US3898640A (en) 1975-08-05
ZA734591B (en) 1974-11-27

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