GB2177833B - Window detector - Google Patents

Window detector

Info

Publication number
GB2177833B
GB2177833B GB8517607A GB8517607A GB2177833B GB 2177833 B GB2177833 B GB 2177833B GB 8517607 A GB8517607 A GB 8517607A GB 8517607 A GB8517607 A GB 8517607A GB 2177833 B GB2177833 B GB 2177833B
Authority
GB
United Kingdom
Prior art keywords
window detector
detector
window
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
GB8517607A
Other versions
GB2177833A (en
GB8517607D0 (en
Inventor
Gerald Charles Dudley
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8517607A priority Critical patent/GB2177833B/en
Publication of GB8517607D0 publication Critical patent/GB8517607D0/en
Publication of GB2177833A publication Critical patent/GB2177833A/en
Application granted granted Critical
Publication of GB2177833B publication Critical patent/GB2177833B/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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G08B29/043—Monitoring of 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
    • G08B17/113—Constructional details

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
GB8517607A 1985-07-12 1985-07-12 Window detector Expired GB2177833B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8517607A GB2177833B (en) 1985-07-12 1985-07-12 Window detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8517607A GB2177833B (en) 1985-07-12 1985-07-12 Window detector

Publications (3)

Publication Number Publication Date
GB8517607D0 GB8517607D0 (en) 1985-08-21
GB2177833A GB2177833A (en) 1987-01-28
GB2177833B true GB2177833B (en) 1989-07-26

Family

ID=10582174

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8517607A Expired GB2177833B (en) 1985-07-12 1985-07-12 Window detector

Country Status (1)

Country Link
GB (1) GB2177833B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2816606B2 (en) * 1991-03-25 1998-10-27 ニッタン株式会社 Fire detection unit and fire alarm system using the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284103C2 (en) * 1967-06-19 1975-01-16 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR DETERMINING TWO LIMIT VALUES
JPS5737916B2 (en) * 1972-07-14 1982-08-12
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
GB2101784B (en) * 1981-06-23 1985-11-27 Chloride Group Plc Fire alarms
JPS5862794A (en) * 1981-10-09 1983-04-14 ニッタン株式会社 Fire alarm
JPS58134392A (en) * 1982-02-04 1983-08-10 ニツタン株式会社 Fire alarm
GB2117150B (en) * 1982-02-26 1986-03-19 Morrison John M Intruder alarm system
JPS5955600A (en) * 1982-09-24 1984-03-30 ニツタン株式会社 Alarm terminal
US4567471A (en) * 1983-08-08 1986-01-28 Pittway Corporation Monitoring system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NONE *

Also Published As

Publication number Publication date
GB2177833A (en) 1987-01-28
GB8517607D0 (en) 1985-08-21

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Legal Events

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

Effective date: 19930712