FR2292975B1 - - Google Patents

Info

Publication number
FR2292975B1
FR2292975B1 FR7536011A FR7536011A FR2292975B1 FR 2292975 B1 FR2292975 B1 FR 2292975B1 FR 7536011 A FR7536011 A FR 7536011A FR 7536011 A FR7536011 A FR 7536011A FR 2292975 B1 FR2292975 B1 FR 2292975B1
Authority
FR
France
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
Application number
FR7536011A
Other languages
French (fr)
Other versions
FR2292975A1 (fr
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.)
Pyrotector Inc
Original Assignee
Pyrotector Inc
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 US05/621,085 external-priority patent/US4011458A/en
Application filed by Pyrotector Inc filed Critical Pyrotector Inc
Publication of FR2292975A1 publication Critical patent/FR2292975A1/fr
Application granted granted Critical
Publication of FR2292975B1 publication Critical patent/FR2292975B1/fr
Granted 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. 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

  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Emergency Alarm Devices (AREA)
FR7536011A 1974-11-27 1975-11-25 Detecteur de fumee perfectionne Granted FR2292975A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52758974A 1974-11-27 1974-11-27
US05/621,085 US4011458A (en) 1975-10-09 1975-10-09 Photoelectric detector with light source intensity regulation

Publications (2)

Publication Number Publication Date
FR2292975A1 FR2292975A1 (fr) 1976-06-25
FR2292975B1 true FR2292975B1 (xx) 1981-09-18

Family

ID=27062456

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536011A Granted FR2292975A1 (fr) 1974-11-27 1975-11-25 Detecteur de fumee perfectionne

Country Status (10)

Country Link
JP (1) JPS5624898B2 (xx)
AU (1) AU497359B2 (xx)
BR (1) BR7507896A (xx)
CA (1) CA1052887A (xx)
CH (1) CH604299A5 (xx)
DE (1) DE2553339A1 (xx)
FR (1) FR2292975A1 (xx)
GB (1) GB1529473A (xx)
IT (1) IT1054912B (xx)
SE (1) SE406657B (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53102085A (en) * 1977-02-18 1978-09-06 Mochida Pharm Co Ltd Instrument for measuring amount of bilirubin
EP0014265B1 (de) * 1979-02-01 1983-06-15 BBC Aktiengesellschaft Brown, Boveri & Cie. Photoelektrische Vorrichtung zur Flammen- und Rauchgasüberwachung
US4306230A (en) * 1979-12-10 1981-12-15 Honeywell Inc. Self-checking photoelectric smoke detector
JPH02123691U (xx) * 1989-03-23 1990-10-11
WO2007046026A1 (en) 2005-10-19 2007-04-26 Philips Intellectual Property & Standards Gmbh A color lighting device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1164793A (en) * 1966-04-05 1969-09-24 Photain Controls Ltd Photo-electric Detection Devices
US3461443A (en) * 1966-11-07 1969-08-12 Alfred W Vasel Smoke detector with means indicating the failure of the light source
GB1222351A (en) * 1966-12-07 1971-02-10 Derek Charles Adams Improvements in or relating to fire-detection apparatus
GB1278205A (en) * 1970-02-11 1972-06-21 Shorrock Develpoments Ltd Smoke detecting device
US3736431A (en) * 1971-04-30 1973-05-29 Mobil Oil Corp System for monitoring a fluid stream

Also Published As

Publication number Publication date
JPS5624898B2 (xx) 1981-06-09
FR2292975A1 (fr) 1976-06-25
DE2553339A1 (de) 1976-08-12
BR7507896A (pt) 1976-08-10
CA1052887A (en) 1979-04-17
IT1054912B (it) 1981-11-30
JPS5177386A (xx) 1976-07-05
SE7513301L (sv) 1976-05-28
CH604299A5 (xx) 1978-09-15
SE406657B (sv) 1979-02-19
GB1529473A (en) 1978-10-18
AU8670575A (en) 1977-05-26
AU497359B2 (en) 1978-12-07

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property
ST Notification of lapse