GB2306218B - Combined detector & sounder device for fire alarm system - Google Patents

Combined detector & sounder device for fire alarm system

Info

Publication number
GB2306218B
GB2306218B GB9520749A GB9520749A GB2306218B GB 2306218 B GB2306218 B GB 2306218B GB 9520749 A GB9520749 A GB 9520749A GB 9520749 A GB9520749 A GB 9520749A GB 2306218 B GB2306218 B GB 2306218B
Authority
GB
United Kingdom
Prior art keywords
alarm system
fire alarm
combined detector
sounder device
sounder
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 - Fee Related
Application number
GB9520749A
Other versions
GB2306218A (en
GB9520749D0 (en
Inventor
Stephen Henry Ellwood
David Appleby
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 GB9520749A priority Critical patent/GB2306218B/en
Publication of GB9520749D0 publication Critical patent/GB9520749D0/en
Publication of GB2306218A publication Critical patent/GB2306218A/en
Application granted granted Critical
Publication of GB2306218B publication Critical patent/GB2306218B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • 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

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
GB9520749A 1995-10-11 1995-10-11 Combined detector & sounder device for fire alarm system Expired - Fee Related GB2306218B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9520749A GB2306218B (en) 1995-10-11 1995-10-11 Combined detector & sounder device for fire alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9520749A GB2306218B (en) 1995-10-11 1995-10-11 Combined detector & sounder device for fire alarm system

Publications (3)

Publication Number Publication Date
GB9520749D0 GB9520749D0 (en) 1995-12-13
GB2306218A GB2306218A (en) 1997-04-30
GB2306218B true GB2306218B (en) 1999-06-23

Family

ID=10782101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9520749A Expired - Fee Related GB2306218B (en) 1995-10-11 1995-10-11 Combined detector & sounder device for fire alarm system

Country Status (1)

Country Link
GB (1) GB2306218B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113168753A (en) * 2018-12-18 2021-07-23 西门子瑞士有限公司 Fire or smoke alarm

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2322727A (en) * 1997-02-27 1998-09-02 Fulleon Ltd Sounder device
GB2335976A (en) * 1998-04-02 1999-10-06 Alasdair James Williamson Replaceable optical cell for scattered light smoke detection apparatus
JP3902377B2 (en) * 2000-03-17 2007-04-04 ニッタン株式会社 Combined thermal smoke sensor
IT1315417B1 (en) * 2000-04-11 2003-02-10 Pittway Tecnologica Spa FIRE DETECTOR STRUCTURE
GB2397122B (en) * 2003-01-03 2006-02-08 David Appleby Fire detector with low false alarm rate
DE102008053909A1 (en) 2008-10-30 2010-05-27 Novar Gmbh gas detector
JP2011008444A (en) * 2009-06-24 2011-01-13 Panasonic Electric Works Co Ltd Fire alarm
JP5921198B2 (en) * 2010-01-21 2016-05-24 ホーチキ株式会社 sensor
GB201006682D0 (en) 2010-04-21 2010-06-09 Fireangel Ltd Co-9x optical alarm
US11961380B2 (en) 2018-06-05 2024-04-16 Electronic Modular Services Ltd. Smoke chamber as audio chamber in audible alarm devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569712A1 (en) * 1992-04-25 1993-11-18 Nohmi Bosai Ltd. Fire detector
GB2296763A (en) * 1995-01-04 1996-07-10 Caradon Gent Limited Improvements in and relating to smoke detectors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569712A1 (en) * 1992-04-25 1993-11-18 Nohmi Bosai Ltd. Fire detector
GB2296763A (en) * 1995-01-04 1996-07-10 Caradon Gent Limited Improvements in and relating to smoke detectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113168753A (en) * 2018-12-18 2021-07-23 西门子瑞士有限公司 Fire or smoke alarm

Also Published As

Publication number Publication date
GB2306218A (en) 1997-04-30
GB9520749D0 (en) 1995-12-13

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20141011