GB2043974B - Fire detectgion system - Google Patents

Fire detectgion system

Info

Publication number
GB2043974B
GB2043974B GB7939030A GB7939030A GB2043974B GB 2043974 B GB2043974 B GB 2043974B GB 7939030 A GB7939030 A GB 7939030A GB 7939030 A GB7939030 A GB 7939030A GB 2043974 B GB2043974 B GB 2043974B
Authority
GB
United Kingdom
Prior art keywords
detectgion
fire
fire detectgion
detectgion system
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
GB7939030A
Other versions
GB2043974A (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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 GB7843944A external-priority patent/GB2034086B/en
Application filed by BICC PLC filed Critical BICC PLC
Priority to GB7939030A priority Critical patent/GB2043974B/en
Publication of GB2043974A publication Critical patent/GB2043974A/en
Application granted granted Critical
Publication of GB2043974B publication Critical patent/GB2043974B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
GB7939030A 1978-11-10 1979-11-12 Fire detectgion system Expired GB2043974B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7939030A GB2043974B (en) 1978-11-10 1979-11-12 Fire detectgion system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7843944A GB2034086B (en) 1978-12-01 1978-11-10 Drive apparatus for a multi-digit tetrode fluorescent display
GB7939030A GB2043974B (en) 1978-11-10 1979-11-12 Fire detectgion system

Publications (2)

Publication Number Publication Date
GB2043974A GB2043974A (en) 1980-10-08
GB2043974B true GB2043974B (en) 1983-02-23

Family

ID=26269528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7939030A Expired GB2043974B (en) 1978-11-10 1979-11-12 Fire detectgion system

Country Status (1)

Country Link
GB (1) GB2043974B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015958A (en) 1983-06-30 1991-05-14 Raychem Corporation Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors
US5235286A (en) 1985-06-12 1993-08-10 Raychem Corporation Method for detecting and obtaining information about changers in variables
US5382909A (en) 1983-06-30 1995-01-17 Raychem Corporation Method for detecting and obtaining information about changes in variables

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939462C2 (en) * 1979-09-28 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Process and device for the identification of individual detectors in intrusion or fire alarm systems
DE29621921U1 (en) * 1996-12-17 1997-02-13 Alsthom Cge Alcatel Smoke or fire alarm device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015958A (en) 1983-06-30 1991-05-14 Raychem Corporation Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors
US5382909A (en) 1983-06-30 1995-01-17 Raychem Corporation Method for detecting and obtaining information about changes in variables
US5235286A (en) 1985-06-12 1993-08-10 Raychem Corporation Method for detecting and obtaining information about changers in variables

Also Published As

Publication number Publication date
GB2043974A (en) 1980-10-08

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Legal Events

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

Effective date: 19921112