GB2030288B - Photo-electric fire detectors - Google Patents

Photo-electric fire detectors

Info

Publication number
GB2030288B
GB2030288B GB7927938A GB7927938A GB2030288B GB 2030288 B GB2030288 B GB 2030288B GB 7927938 A GB7927938 A GB 7927938A GB 7927938 A GB7927938 A GB 7927938A GB 2030288 B GB2030288 B GB 2030288B
Authority
GB
United Kingdom
Prior art keywords
photo
fire detectors
electric fire
electric
detectors
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
GB7927938A
Other versions
GB2030288A (en
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo 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 JP10954178A external-priority patent/JPS5449426A/en
Application filed by Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Publication of GB2030288A publication Critical patent/GB2030288A/en
Application granted granted Critical
Publication of GB2030288B publication Critical patent/GB2030288B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
GB7927938A 1978-09-06 1979-08-10 Photo-electric fire detectors Expired GB2030288B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10954178A JPS5449426A (en) 1977-09-08 1978-09-06 Radiator

Publications (2)

Publication Number Publication Date
GB2030288A GB2030288A (en) 1980-04-02
GB2030288B true GB2030288B (en) 1982-04-28

Family

ID=14512855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7927938A Expired GB2030288B (en) 1978-09-06 1979-08-10 Photo-electric fire detectors

Country Status (1)

Country Link
GB (1) GB2030288B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8925460D0 (en) * 1989-11-10 1989-12-28 Smiths Industries Plc Flame detection

Also Published As

Publication number Publication date
GB2030288A (en) 1980-04-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee