CA964759A - Intrusion alarm - Google Patents

Intrusion alarm

Info

Publication number
CA964759A
CA964759A CA155,694A CA155694A CA964759A CA 964759 A CA964759 A CA 964759A CA 155694 A CA155694 A CA 155694A CA 964759 A CA964759 A CA 964759A
Authority
CA
Canada
Prior art keywords
intrusion alarm
intrusion
alarm
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
CA155,694A
Other languages
English (en)
Other versions
CA155694S (en
Inventor
Harold Eisenberg
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.)
Webster Electric Co Inc
Original Assignee
Webster Electric Co Inc
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 Webster Electric Co Inc filed Critical Webster Electric Co Inc
Application granted granted Critical
Publication of CA964759A publication Critical patent/CA964759A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Fixing For Electrophotography (AREA)
CA155,694A 1971-12-13 1972-11-06 Intrusion alarm Expired CA964759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20746671A 1971-12-13 1971-12-13

Publications (1)

Publication Number Publication Date
CA964759A true CA964759A (en) 1975-03-18

Family

ID=22770666

Family Applications (1)

Application Number Title Priority Date Filing Date
CA155,694A Expired CA964759A (en) 1971-12-13 1972-11-06 Intrusion alarm

Country Status (7)

Country Link
US (1) US3754222A (ja)
JP (1) JPS566039B2 (ja)
CA (1) CA964759A (ja)
DE (1) DE2260618C3 (ja)
FR (1) FR2163463B1 (ja)
GB (1) GB1414505A (ja)
IT (1) IT973963B (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50140390U (ja) * 1974-05-02 1975-11-19
US3944934A (en) * 1974-11-21 1976-03-16 Milwaukee Resistor Corporation False triggering prevention circuit
US4097853A (en) * 1976-09-20 1978-06-27 Milwaukee Resistor Corporation Means for distinguishing motion from noise in an intrusion alarm system
US4129856A (en) * 1976-11-15 1978-12-12 Contronic Controls Limited Filter system and method for intrusion alarm
US4107684A (en) * 1977-05-02 1978-08-15 E-Systems, Inc. Phase locked detector
JPS61941A (ja) * 1984-06-13 1986-01-06 Matsushita Electric Ind Co Ltd 半導体レ−ザ光ピツクアツプ装置
GB2302406B (en) * 1995-06-19 1999-08-25 Bright Star Entpr Ltd Apparatus for detecting the breaching of a closed environment
US6040765A (en) * 1998-01-23 2000-03-21 Armatron International, Inc. Obstacle detection system built-in test method and apparatus
WO2003105480A1 (en) * 2002-05-20 2003-12-18 Simmonds Precision Products, Inc. Video detection verification system
US7245315B2 (en) * 2002-05-20 2007-07-17 Simmonds Precision Products, Inc. Distinguishing between fire and non-fire conditions using cameras
US7280696B2 (en) * 2002-05-20 2007-10-09 Simmonds Precision Products, Inc. Video detection/verification system
US7256818B2 (en) * 2002-05-20 2007-08-14 Simmonds Precision Products, Inc. Detecting fire using cameras
US7535351B2 (en) 2006-07-24 2009-05-19 Welles Reymond Acoustic intrusion detection system
US9997035B1 (en) 2017-03-01 2018-06-12 Samuel L. Thomasson Acoustic security system and method
CN113450537B (zh) * 2021-06-25 2023-05-30 北京小米移动软件有限公司 跌倒检测方法、装置、电子设备和存储介质

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25100A (en) * 1859-08-16 de fokest
US2066156A (en) * 1929-04-25 1936-12-29 Muffly Glenn Signaling means
US2541066A (en) * 1943-11-24 1951-02-13 Sperry Corp Object detecting and warning system and method
US2791756A (en) * 1946-06-11 1957-05-07 Leon G S Wood Target doppler indicator
USRE25100E (en) * 1954-04-13 1961-12-19 chapin
US3394342A (en) * 1965-09-13 1968-07-23 Walker Philip Hulme Ultrasonic object detection systems
DE1791060C3 (de) * 1968-09-05 1975-08-14 Alois Zettler Elektrotechnische Fabrik Gmbh, 8000 Muenchen Elektroakustische Anlage
US3582870A (en) * 1969-03-10 1971-06-01 Normda Ind Inc Ultrasonic detection system
US3585577A (en) * 1969-06-12 1971-06-15 Southwest Res Inst Ultrasonic transceiver

Also Published As

Publication number Publication date
JPS4866795A (ja) 1973-09-12
IT973963B (it) 1974-06-10
DE2260618B2 (de) 1980-12-11
FR2163463A1 (ja) 1973-07-27
JPS566039B2 (ja) 1981-02-09
DE2260618C3 (de) 1981-09-24
DE2260618A1 (de) 1973-06-20
FR2163463B1 (ja) 1977-08-26
US3754222A (en) 1973-08-21
GB1414505A (en) 1975-11-19

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