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GB2010578B - Smoke detectors - Google Patents

Smoke detectors

Info

Publication number
GB2010578B
GB2010578B GB7843521A GB7843521A GB2010578B GB 2010578 B GB2010578 B GB 2010578B GB 7843521 A GB7843521 A GB 7843521A GB 7843521 A GB7843521 A GB 7843521A GB 2010578 B GB2010578 B GB 2010578B
Authority
GB
United Kingdom
Prior art keywords
smoke detectors
detectors
smoke
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
GB7843521A
Other versions
GB2010578A (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.)
GE Healthcare Ltd
Original Assignee
Radiochemical Centre 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
Application filed by Radiochemical Centre Ltd filed Critical Radiochemical Centre Ltd
Priority to GB7843521A priority Critical patent/GB2010578B/en
Publication of GB2010578A publication Critical patent/GB2010578A/en
Application granted granted Critical
Publication of GB2010578B publication Critical patent/GB2010578B/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
    • 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
    • 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
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
GB7843521A 1977-11-18 1978-11-07 Smoke detectors Expired GB2010578B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7843521A GB2010578B (en) 1977-11-18 1978-11-07 Smoke detectors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4815577 1977-11-18
GB7843521A GB2010578B (en) 1977-11-18 1978-11-07 Smoke detectors

Publications (2)

Publication Number Publication Date
GB2010578A GB2010578A (en) 1979-06-27
GB2010578B true GB2010578B (en) 1982-09-15

Family

ID=26266220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7843521A Expired GB2010578B (en) 1977-11-18 1978-11-07 Smoke detectors

Country Status (1)

Country Link
GB (1) GB2010578B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186463U (en) * 1982-06-07 1983-12-10 能美防災株式会社 ionization smoke detector

Also Published As

Publication number Publication date
GB2010578A (en) 1979-06-27

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Legal Events

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