GB2112192B - Fire detector - Google Patents

Fire detector

Info

Publication number
GB2112192B
GB2112192B GB08233804A GB8233804A GB2112192B GB 2112192 B GB2112192 B GB 2112192B GB 08233804 A GB08233804 A GB 08233804A GB 8233804 A GB8233804 A GB 8233804A GB 2112192 B GB2112192 B GB 2112192B
Authority
GB
United Kingdom
Prior art keywords
fire detector
fire
detector
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
GB08233804A
Other versions
GB2112192A (en
Inventor
Tetsuo Kimura
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.)
Nittan Co Ltd
Original Assignee
Nittan Co Ltd
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
Priority claimed from JP18835481A external-priority patent/JPS5892099A/en
Priority claimed from JP18835581A external-priority patent/JPS5890159A/en
Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of GB2112192A publication Critical patent/GB2112192A/en
Application granted granted Critical
Publication of GB2112192B publication Critical patent/GB2112192B/en
Expired legal-status Critical Current

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
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
GB08233804A 1981-11-26 1982-11-26 Fire detector Expired GB2112192B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18835481A JPS5892099A (en) 1981-11-26 1981-11-26 Fire detector
JP18835581A JPS5890159A (en) 1981-11-26 1981-11-26 Ionization-type smoke sensor

Publications (2)

Publication Number Publication Date
GB2112192A GB2112192A (en) 1983-07-13
GB2112192B true GB2112192B (en) 1986-09-10

Family

ID=26504870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08233804A Expired GB2112192B (en) 1981-11-26 1982-11-26 Fire detector

Country Status (1)

Country Link
GB (1) GB2112192B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60186994A (en) * 1984-03-05 1985-09-24 ホーチキ株式会社 Fire sensor
JPS6346599A (en) * 1986-08-14 1988-02-27 ニツタン株式会社 Environment abnormality detector
US7522037B2 (en) * 2002-10-10 2009-04-21 Valery Vasilievich Ovchinnikov Method for forming and transmitting signals

Also Published As

Publication number Publication date
GB2112192A (en) 1983-07-13

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20021125