BE803464A - Avertisseurs d'incendie - Google Patents

Avertisseurs d'incendie

Info

Publication number
BE803464A
BE803464A BE134448A BE134448A BE803464A BE 803464 A BE803464 A BE 803464A BE 134448 A BE134448 A BE 134448A BE 134448 A BE134448 A BE 134448A BE 803464 A BE803464 A BE 803464A
Authority
BE
Belgium
Prior art keywords
fire warning
warning
fire
Prior art date
Application number
BE134448A
Other languages
English (en)
Original Assignee
Chubb Fire Security 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
Priority claimed from GB3763372A external-priority patent/GB1405615A/en
Application filed by Chubb Fire Security Ltd filed Critical Chubb Fire Security Ltd
Publication of BE803464A publication Critical patent/BE803464A/fr

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

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)
BE134448A 1972-08-11 1973-08-10 Avertisseurs d'incendie BE803464A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3763372A GB1405615A (en) 1972-08-11 1972-08-11 Fire alarms

Publications (1)

Publication Number Publication Date
BE803464A true BE803464A (fr) 1974-02-11

Family

ID=10397860

Family Applications (1)

Application Number Title Priority Date Filing Date
BE134448A BE803464A (fr) 1972-08-11 1973-08-10 Avertisseurs d'incendie

Country Status (4)

Country Link
US (1) US3846772A (fr)
BE (1) BE803464A (fr)
CA (1) CA1010969A (fr)
ZA (1) ZA735343B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7604502L (sv) * 1976-04-15 1977-10-16 Ericsson Telefon Ab L M Optisk branddetektor
US4131888A (en) * 1976-08-18 1978-12-26 American District Telegraph Company Dual projected-beam smoke detector
JPS53144387A (en) * 1977-05-23 1978-12-15 Hochiki Co Depreciation type detector
US4280495A (en) * 1978-11-24 1981-07-28 Sarns, Inc. Air emboli detection
US4260984A (en) * 1979-03-17 1981-04-07 Hochiki Corporation Count discriminating fire detector
AU533232B2 (en) * 1979-06-27 1983-11-10 Hochiki Kabushiki Kaisha Photoelectric detector
US4316184A (en) * 1979-07-27 1982-02-16 Pittway Corporation Combination combustion-products detector
US4322723A (en) * 1980-09-08 1982-03-30 Combustion Engineering, Inc. Fault detection in a flame scanner
US4471346A (en) * 1981-06-02 1984-09-11 Eberhard Faber, Inc. Smoke detector
US5321494A (en) * 1992-03-23 1994-06-14 Eastman Kodak Company Subtractive measurement method and apparatus for CRT output intensity measurement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794974A (en) * 1955-01-24 1957-06-04 Kidde & Co Walter Compensation for turbulence and other efects in intruder detection systems
US3461443A (en) * 1966-11-07 1969-08-12 Alfred W Vasel Smoke detector with means indicating the failure of the light source
US3566385A (en) * 1968-04-22 1971-02-23 Nat Res Dev Fire detecting apparatus sensitive to refraction
US3723746A (en) * 1970-01-07 1973-03-27 Nat Res Dev Fire detecting apparatus sensitive to refraction

Also Published As

Publication number Publication date
CA1010969A (en) 1977-05-24
US3846772A (en) 1974-11-05
ZA735343B (en) 1974-09-25

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: CHUBB FIRE SECURITY LTD

Effective date: 19930810