GB2251067B - Smoke alarm - Google Patents

Smoke alarm

Info

Publication number
GB2251067B
GB2251067B GB9125464A GB9125464A GB2251067B GB 2251067 B GB2251067 B GB 2251067B GB 9125464 A GB9125464 A GB 9125464A GB 9125464 A GB9125464 A GB 9125464A GB 2251067 B GB2251067 B GB 2251067B
Authority
GB
United Kingdom
Prior art keywords
smoke alarm
smoke
alarm
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
GB9125464A
Other versions
GB9125464D0 (en
GB2251067A (en
Inventor
Keith Fawcett
Fergus Flynn
Michael Byrne
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.)
E I Co Ltd
EI CO Ltd
Original Assignee
E I Co Ltd
EI 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
Application filed by E I Co Ltd, EI CO Ltd filed Critical E I Co Ltd
Publication of GB9125464D0 publication Critical patent/GB9125464D0/en
Publication of GB2251067A publication Critical patent/GB2251067A/en
Application granted granted Critical
Publication of GB2251067B publication Critical patent/GB2251067B/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)
GB9125464A 1990-12-17 1991-11-29 Smoke alarm Expired - Fee Related GB2251067B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE456490A IE904564A1 (en) 1990-12-17 1990-12-17 Smoke alarm

Publications (3)

Publication Number Publication Date
GB9125464D0 GB9125464D0 (en) 1992-01-29
GB2251067A GB2251067A (en) 1992-06-24
GB2251067B true GB2251067B (en) 1994-03-30

Family

ID=11039465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9125464A Expired - Fee Related GB2251067B (en) 1990-12-17 1991-11-29 Smoke alarm

Country Status (2)

Country Link
GB (1) GB2251067B (en)
IE (1) IE904564A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5497144A (en) * 1993-07-07 1996-03-05 Cerberus Ag Testing and adjustment of scattered-light smoke detectors
GB2345130A (en) * 1998-12-22 2000-06-28 Pyronix Ltd Intruder sensor housing
DK2264676T3 (en) 2008-03-24 2019-09-30 Panasonic Ip Man Co Ltd Sensor
GB2531495B (en) * 2014-06-16 2017-04-12 Apollo Fire Detectors Ltd Smoke detector
CN107533787B (en) * 2015-05-15 2019-10-18 谷歌有限责任公司 Smoke detector cell structure and correlation technique
CN110322658B (en) * 2019-08-02 2024-01-30 四川赛科安全技术有限公司 Top type reverse smoke inlet labyrinth structure and implementation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595458A (en) * 1976-11-04 1981-08-12 Solomon E E Smoke detector
US4384488A (en) * 1980-05-09 1983-05-24 Cerberus Ag Smoke detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595458A (en) * 1976-11-04 1981-08-12 Solomon E E Smoke detector
US4384488A (en) * 1980-05-09 1983-05-24 Cerberus Ag Smoke detector

Also Published As

Publication number Publication date
IE904564A1 (en) 1992-06-17
GB9125464D0 (en) 1992-01-29
GB2251067A (en) 1992-06-24

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Legal Events

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

Effective date: 20061129