GB2248108B - Improvements to optical smoke detection equipment - Google Patents

Improvements to optical smoke detection equipment

Info

Publication number
GB2248108B
GB2248108B GB9020471A GB9020471A GB2248108B GB 2248108 B GB2248108 B GB 2248108B GB 9020471 A GB9020471 A GB 9020471A GB 9020471 A GB9020471 A GB 9020471A GB 2248108 B GB2248108 B GB 2248108B
Authority
GB
United Kingdom
Prior art keywords
detection equipment
smoke detection
optical smoke
optical
equipment
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
GB9020471A
Other versions
GB9020471D0 (en
GB2248108A (en
Inventor
David Theodore Nels 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 GB9020471A priority Critical patent/GB2248108B/en
Publication of GB9020471D0 publication Critical patent/GB9020471D0/en
Publication of GB2248108A publication Critical patent/GB2248108A/en
Application granted granted Critical
Publication of GB2248108B publication Critical patent/GB2248108B/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
    • 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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9020471A 1990-09-19 1990-09-19 Improvements to optical smoke detection equipment Expired - Lifetime GB2248108B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9020471A GB2248108B (en) 1990-09-19 1990-09-19 Improvements to optical smoke detection equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9020471A GB2248108B (en) 1990-09-19 1990-09-19 Improvements to optical smoke detection equipment

Publications (3)

Publication Number Publication Date
GB9020471D0 GB9020471D0 (en) 1990-10-31
GB2248108A GB2248108A (en) 1992-03-25
GB2248108B true GB2248108B (en) 1995-01-04

Family

ID=10682448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9020471A Expired - Lifetime GB2248108B (en) 1990-09-19 1990-09-19 Improvements to optical smoke detection equipment

Country Status (1)

Country Link
GB (1) GB2248108B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08233736A (en) * 1995-02-27 1996-09-13 Nohmi Bosai Ltd Microparticle detection sensor
CA2228335A1 (en) * 1997-02-04 1998-08-04 Edward Dauskurdas Photodetector with coated reflector
US9182331B2 (en) * 2012-08-31 2015-11-10 The Boeing Company Measurement of solid, aerosol, vapor, liquid and gaseous concentration and particle size
EP3539105B1 (en) 2016-11-11 2024-09-11 Carrier Corporation High sensitivity fiber optic based detection
ES2812831T3 (en) 2016-11-11 2021-03-18 Carrier Corp High sensitivity fiber optic based detection
ES2968291T3 (en) 2016-11-11 2024-05-08 Carrier Corp High sensitivity fiber optic based detection
CA3043583A1 (en) 2016-11-11 2018-05-17 Carrier Corporation High sensitivity fiber optic based detection
CA3043500A1 (en) 2016-11-11 2018-05-17 Carrier Corporation High sensitivity fiber optic based detection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175865A (en) * 1976-04-05 1979-11-27 Cerberus Ag Smoke detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175865A (en) * 1976-04-05 1979-11-27 Cerberus Ag Smoke detector
GB1561421A (en) * 1976-04-05 1980-02-20 Cerberus Ag Smoke sensor

Also Published As

Publication number Publication date
GB9020471D0 (en) 1990-10-31
GB2248108A (en) 1992-03-25

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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: 20100918