CH614797A5 - - Google Patents

Info

Publication number
CH614797A5
CH614797A5 CH209577A CH209577A CH614797A5 CH 614797 A5 CH614797 A5 CH 614797A5 CH 209577 A CH209577 A CH 209577A CH 209577 A CH209577 A CH 209577A CH 614797 A5 CH614797 A5 CH 614797A5
Authority
CH
Switzerland
Application number
CH209577A
Inventor
Katsutoshi Kuwabara
Kanji Ishii
Original Assignee
Hochiki Co
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 Hochiki Co filed Critical Hochiki Co
Publication of CH614797A5 publication Critical patent/CH614797A5/xx

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/16—Security signalling or alarm systems, e.g. redundant systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire Alarms (AREA)
  • Emergency Protection Circuit Devices (AREA)
CH209577A 1976-02-20 1977-02-18 CH614797A5 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976018255U JPS52111590U (no) 1976-02-20 1976-02-20

Publications (1)

Publication Number Publication Date
CH614797A5 true CH614797A5 (no) 1979-12-14

Family

ID=11966562

Family Applications (1)

Application Number Title Priority Date Filing Date
CH209577A CH614797A5 (no) 1976-02-20 1977-02-18

Country Status (6)

Country Link
US (1) US4142219A (no)
JP (1) JPS52111590U (no)
CH (1) CH614797A5 (no)
DE (1) DE2707061A1 (no)
FR (1) FR2341903A1 (no)
GB (1) GB1532173A (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203581A (en) * 1987-04-15 1988-10-19 Jack Y C Chen Fire and/or burglar alarm system
US5302889A (en) * 1992-06-19 1994-04-12 Honeywell Inc. Voltage regulator
DE4412653C2 (de) * 1994-04-13 1997-01-09 Schmersal K A Gmbh & Co Überwachungseinrichtung
CN103280055A (zh) * 2013-05-30 2013-09-04 成都荣耀科技有限公司 可增强报警功能的低压电力线路防盗系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS446089Y1 (no) * 1966-03-30 1969-03-05
DE2029485B2 (de) * 1969-06-21 1971-11-25 Nittan Co. Ltd., Tokio Ionisations rauchfuehler
US3717862A (en) * 1969-10-16 1973-02-20 Nittan Co Ltd Fire detecting system and testing means therefor
US3728706A (en) * 1970-09-28 1973-04-17 Gen Signal Corp System for indicating aerosols in the atmosphere
US3824434A (en) * 1972-12-26 1974-07-16 Square D Co Relay with time delay coil
US4021671A (en) * 1975-07-07 1977-05-03 Gulf & Western Manufacturing Company (Systems) Ionization detector

Also Published As

Publication number Publication date
JPS52111590U (no) 1977-08-24
FR2341903A1 (fr) 1977-09-16
US4142219A (en) 1979-02-27
DE2707061A1 (de) 1977-09-01
GB1532173A (en) 1978-11-15

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Legal Events

Date Code Title Description
PL Patent ceased