CA979097A - Alarm system - Google Patents

Alarm system

Info

Publication number
CA979097A
CA979097A CA131,472A CA131472A CA979097A CA 979097 A CA979097 A CA 979097A CA 131472 A CA131472 A CA 131472A CA 979097 A CA979097 A CA 979097A
Authority
CA
Canada
Prior art keywords
alarm system
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
CA131,472A
Other versions
CA131472S (en
Inventor
Thomas S. Wootton
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.)
BALDWIN ELECTRONICS
Original Assignee
BALDWIN ELECTRONICS
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 BALDWIN ELECTRONICS filed Critical BALDWIN ELECTRONICS
Application granted granted Critical
Publication of CA979097A publication Critical patent/CA979097A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/009—Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Burglar Alarm Systems (AREA)
CA131,472A 1970-12-31 1971-12-31 Alarm system Expired CA979097A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10320370A 1970-12-31 1970-12-31

Publications (1)

Publication Number Publication Date
CA979097A true CA979097A (en) 1975-12-02

Family

ID=22293924

Family Applications (1)

Application Number Title Priority Date Filing Date
CA131,472A Expired CA979097A (en) 1970-12-31 1971-12-31 Alarm system

Country Status (8)

Country Link
US (1) US3689888A (en)
JP (1) JPS5549358B1 (en)
AU (1) AU467666B2 (en)
CA (1) CA979097A (en)
DE (1) DE2165754C3 (en)
FR (1) FR2120139B1 (en)
GB (1) GB1381734A (en)
IT (1) IT944581B (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792455A (en) * 1972-09-15 1974-02-12 Ward O Security alarm system with frequency sweeping
US3909826A (en) * 1973-08-31 1975-09-30 Alice F Schildmeier Plural transceiver alarm system using coded alarm message and every station display of alarm origin
US3925763A (en) * 1973-09-13 1975-12-09 Romesh Tekchand Wadhwani Security system
AU498573B2 (en) * 1974-06-18 1979-03-15 Aboyne Pty. Ltd. Information transmission system
US4095211A (en) * 1975-07-31 1978-06-13 The Stanley Works Coded electronic security system
US4020477A (en) * 1975-11-10 1977-04-26 American District Telegraph Company Radio central station alarm system
US4119943A (en) * 1977-01-14 1978-10-10 Kabushiki Kaisha Komatsu Seisakusho Monitor system for construction vehicles
CA1125413A (en) * 1977-08-22 1982-06-08 Bruce R. Beeghly Annunciator
WO1984004837A1 (en) * 1980-04-28 1984-12-06 Marvin Richard Clarkson Automatic liquid level indicator and alarm system
US4459584A (en) * 1981-12-21 1984-07-10 Clarkson Marvin R Automatic liquid level indicator and alarm system
JPS58127292A (en) * 1982-01-26 1983-07-29 ニツタン株式会社 Fire sensing system
IT1172823B (en) * 1983-02-16 1987-06-18 Veltronic Spa REMOTE SIGNALING EQUIPMENT, PARTICULARLY SUITABLE FOR REMOTE SURVEILLANCE FUNCTIONS
GB2156120A (en) * 1984-02-23 1985-10-02 Alarmcall Security Systems Lim Alarm system
FR2574916A1 (en) * 1984-12-17 1986-06-20 Chevaillier Eric Device for remotely controlling the correct operation of refrigerating or air conditioning installations
US4647223A (en) * 1985-08-29 1987-03-03 Kolpak Industries, Inc. Cold storage room thermometer and back-up power supply
US4734680A (en) * 1986-02-06 1988-03-29 Emhart Industries, Inc. Detection system with randomized transmissions
US5248958A (en) * 1988-03-11 1993-09-28 Marcel Milin Hertzian-wave intrusion detetor
US4882564A (en) * 1988-06-06 1989-11-21 Monitech Corporation Remote temperature monitoring system
US5386209A (en) * 1992-01-21 1995-01-31 Thomas; Winston M. H. Cluster alarm monitoring system
US5946303A (en) * 1995-11-29 1999-08-31 Siemens Information And Communication Networks, Inc. Automatic configuration of a remote communication interface via the alarm indication signal
GB2326002A (en) * 1997-06-06 1998-12-09 Centrepoint Technology Limited Remote reading of meters and sensors
US7265654B1 (en) * 2004-04-22 2007-09-04 Powerline Control Systems, Inc. Powerline pulse position modulated transmitter apparatus and method
US8294556B2 (en) 2007-04-17 2012-10-23 Powerline Control Systems, Inc. Powerline control system and method
US9601915B2 (en) * 2013-10-29 2017-03-21 Luis Santana Electronic safety shutoff with dual redundancy

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739301A (en) * 1951-03-28 1956-03-20 Bendix Aviat Corp Checking circuit for correct number of received information pulses
US3377585A (en) * 1961-03-17 1968-04-09 Electro Mechanical Res Inc Telemetering decoder system
US3257651A (en) * 1962-04-18 1966-06-21 Lyle D Feisel Pulse position modulation information handling system
US3394349A (en) * 1965-03-22 1968-07-23 Motorola Inc Supervisory control system having repeat message control and count control of the number of repeat messages
US3518628A (en) * 1966-11-10 1970-06-30 Electronic Specialty Co Systems and methods for communicating with a plurality of remote units
US3519749A (en) * 1967-04-26 1970-07-07 Bbp Electronics Inc Emergency warning system
US3492581A (en) * 1967-05-24 1970-01-27 Peninsula Research & Dev Corp Emergency calling system
FR1544729A (en) * 1967-08-23 1968-11-08 Radarguard Security Ltd Improvements to security installations
US3466605A (en) * 1967-11-28 1969-09-09 Honeywell Inc Alarm printer

Also Published As

Publication number Publication date
DE2165754C3 (en) 1979-08-16
FR2120139B1 (en) 1976-09-03
DE2165754B2 (en) 1978-12-14
US3689888A (en) 1972-09-05
FR2120139A1 (en) 1972-08-11
GB1381734A (en) 1975-01-29
JPS5549358B1 (en) 1980-12-11
AU467666B2 (en) 1975-12-11
DE2165754A1 (en) 1972-07-20
IT944581B (en) 1973-04-20
AU3745371A (en) 1973-07-05

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