GB2243475B - Improvements to gas and smoke alarm systems - Google Patents

Improvements to gas and smoke alarm systems

Info

Publication number
GB2243475B
GB2243475B GB9009333A GB9009333A GB2243475B GB 2243475 B GB2243475 B GB 2243475B GB 9009333 A GB9009333 A GB 9009333A GB 9009333 A GB9009333 A GB 9009333A GB 2243475 B GB2243475 B GB 2243475B
Authority
GB
United Kingdom
Prior art keywords
gas
smoke alarm
alarm systems
systems
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 - Lifetime
Application number
GB9009333A
Other versions
GB9009333D0 (en
GB2243475A (en
Inventor
David Theodore Nels Williamson
Alasdair James Williamson
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 GB9009333A priority Critical patent/GB2243475B/en
Publication of GB9009333D0 publication Critical patent/GB9009333D0/en
Publication of GB2243475A publication Critical patent/GB2243475A/en
Application granted granted Critical
Publication of GB2243475B publication Critical patent/GB2243475B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
GB9009333A 1990-04-26 1990-04-26 Improvements to gas and smoke alarm systems Expired - Lifetime GB2243475B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9009333A GB2243475B (en) 1990-04-26 1990-04-26 Improvements to gas and smoke alarm systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9009333A GB2243475B (en) 1990-04-26 1990-04-26 Improvements to gas and smoke alarm systems

Publications (3)

Publication Number Publication Date
GB9009333D0 GB9009333D0 (en) 1990-06-20
GB2243475A GB2243475A (en) 1991-10-30
GB2243475B true GB2243475B (en) 1993-12-01

Family

ID=10674996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9009333A Expired - Lifetime GB2243475B (en) 1990-04-26 1990-04-26 Improvements to gas and smoke alarm systems

Country Status (1)

Country Link
GB (1) GB2243475B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015071409A1 (en) 2013-11-14 2015-05-21 Xtralis Global Improvements to multi-point sampling valves

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU670082B2 (en) * 1992-05-11 1996-07-04 Vision Systems Limited Improvements relating to smoke detection scanning apparatus
EP0640210A4 (en) * 1992-05-11 1995-09-13 Iei Pty Ltd Improvements relating to smoke detection scanning apparatus.
GB2277625B (en) * 1993-04-30 1996-08-28 Kidde Fire Protection Ltd Particle detecting apparatus and systems
GB9826133D0 (en) * 1998-11-27 1999-01-20 Kci Medical Ltd Rotary valve
NO20001092L (en) * 2000-03-02 2001-09-03 John Arntsen Device for detection of smoke
AUPS056002A0 (en) * 2002-02-15 2002-03-07 Vision Products Pty Ltd Improved smoke detector unit
US7504962B2 (en) 2005-11-22 2009-03-17 Joseph Stephen Smith Apparatus for enclosing a smoke detector
AT514912B1 (en) * 2013-11-07 2015-05-15 Strauss Sicherungsanlagenbau Ges M B H Lab Smoke detection device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB315423A (en) * 1929-07-12 1930-11-12 George Matthew Marr Improvements in smoke detectors
GB409577A (en) * 1931-11-11 1934-05-03 Kidde & Co Walter Improvements in and relating to installations for detecting the presence of suspended matters in fluids
GB457054A (en) * 1935-07-12 1936-11-20 Thomas Andrew Hayward Improvements in pipe bending machines
GB639332A (en) * 1945-07-13 1950-06-28 C O Two Fire Equipment Co Smoke detector and signal for airplanes
GB694994A (en) * 1951-06-15 1953-07-29 Specialties Dev Corp Apparatus for and method of detecting suspended matter in fluids
GB1098161A (en) * 1965-04-20 1968-01-10 Cow & Gate Ltd Improvements in or relating to fire detection apparatus
GB1232841A (en) * 1968-05-09 1971-05-19

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB315423A (en) * 1929-07-12 1930-11-12 George Matthew Marr Improvements in smoke detectors
GB409577A (en) * 1931-11-11 1934-05-03 Kidde & Co Walter Improvements in and relating to installations for detecting the presence of suspended matters in fluids
GB457054A (en) * 1935-07-12 1936-11-20 Thomas Andrew Hayward Improvements in pipe bending machines
GB639332A (en) * 1945-07-13 1950-06-28 C O Two Fire Equipment Co Smoke detector and signal for airplanes
GB694994A (en) * 1951-06-15 1953-07-29 Specialties Dev Corp Apparatus for and method of detecting suspended matter in fluids
GB1098161A (en) * 1965-04-20 1968-01-10 Cow & Gate Ltd Improvements in or relating to fire detection apparatus
GB1232841A (en) * 1968-05-09 1971-05-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015071409A1 (en) 2013-11-14 2015-05-21 Xtralis Global Improvements to multi-point sampling valves
CN105814614A (en) * 2013-11-14 2016-07-27 爱克斯崔里斯环球公司 Improvements to multi-point sampling valves
CN105814614B (en) * 2013-11-14 2018-12-14 爱克斯崔里斯环球公司 The improvement of multidraw valve

Also Published As

Publication number Publication date
GB9009333D0 (en) 1990-06-20
GB2243475A (en) 1991-10-30

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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)
PE20 Patent expired after termination of 20 years

Expiry date: 20100425