FR2254024A1 - - Google Patents

Info

Publication number
FR2254024A1
FR2254024A1 FR7503156A FR7503156A FR2254024A1 FR 2254024 A1 FR2254024 A1 FR 2254024A1 FR 7503156 A FR7503156 A FR 7503156A FR 7503156 A FR7503156 A FR 7503156A FR 2254024 A1 FR2254024 A1 FR 2254024A1
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.)
Granted
Application number
FR7503156A
Other versions
FR2254024B3 (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 US449362A external-priority patent/US3917956A/en
Application filed by Pyrotector Inc filed Critical Pyrotector Inc
Publication of FR2254024A1 publication Critical patent/FR2254024A1/fr
Application granted granted Critical
Publication of FR2254024B3 publication Critical patent/FR2254024B3/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G08B17/103—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

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)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
FR7503156A 1973-11-26 1975-01-31 Expired FR2254024B3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41920673A 1973-11-26 1973-11-26
US449362A US3917956A (en) 1974-03-08 1974-03-08 Smoke detector

Publications (2)

Publication Number Publication Date
FR2254024A1 true FR2254024A1 (fr) 1975-07-04
FR2254024B3 FR2254024B3 (fr) 1979-02-02

Family

ID=27024396

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7503156A Expired FR2254024B3 (fr) 1973-11-26 1975-01-31

Country Status (11)

Country Link
JP (1) JPS50114275A (fr)
BR (1) BR7408707D0 (fr)
CA (1) CA1056931A (fr)
CH (2) CH599645A5 (fr)
CS (1) CS186786B2 (fr)
DE (2) DE2462876C2 (fr)
FR (1) FR2254024B3 (fr)
GB (1) GB1490866A (fr)
IL (1) IL45331A (fr)
IN (1) IN143206B (fr)
NL (1) NL7410079A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2369746A1 (fr) * 1976-10-26 1978-05-26 Matsushita Electric Works Ltd Detecteur photoelectrique de fumee
EP0014874A2 (fr) * 1979-02-26 1980-09-03 Cerberus Ag Détecteur d'incendie à rayonnement pulsé
EP0014779A1 (fr) * 1979-02-22 1980-09-03 Cerberus Ag Détecteur de fumée comportant un circuit d'exploitation d'impulsion
EP0032169A1 (fr) * 1979-12-17 1981-07-22 Cerberus Ag Système de signalisation fonctionnant avec radiation électromagnétique

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125779A (en) * 1977-07-13 1978-11-14 Chloride, Incorporated Smoke detector
JPS5716956U (fr) * 1980-06-30 1982-01-28
JPS6014398B2 (ja) * 1981-03-18 1985-04-12 ホーチキ株式会社 光電式煙感知器
EP0145189B1 (fr) * 1983-10-21 1990-08-08 COLE, Martin Terence Appareil pour la détection de la fumée
JPS6151U (ja) * 1985-05-17 1986-01-06 京セラ株式会社 光電式煙検出報知装置
AU2020279396A1 (en) * 2019-05-23 2021-12-02 Northgate Technologies Inc. System and method for smoke removal in a gas recirculation system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH417405A (de) * 1964-07-14 1966-07-15 Cerberus Ag Werk Fuer Elektron Vorrichtung zur Feststellung von Aerosolen in Luft
US3382762A (en) * 1967-02-21 1968-05-14 Alfred W. Vasel Smoke detecting device
US3555532A (en) 1968-10-29 1971-01-12 Graham Stuart Corp Vapor or particle detection device
GB1278205A (en) * 1970-02-11 1972-06-21 Shorrock Develpoments Ltd Smoke detecting device
CH520990A (de) * 1970-12-21 1972-03-31 Cerberus Ag Rauchdetektor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2369746A1 (fr) * 1976-10-26 1978-05-26 Matsushita Electric Works Ltd Detecteur photoelectrique de fumee
EP0014779A1 (fr) * 1979-02-22 1980-09-03 Cerberus Ag Détecteur de fumée comportant un circuit d'exploitation d'impulsion
EP0014874A2 (fr) * 1979-02-26 1980-09-03 Cerberus Ag Détecteur d'incendie à rayonnement pulsé
EP0014874A3 (en) * 1979-02-26 1980-09-17 Cerberus Ag Fire detector using pulsed radiation
EP0032169A1 (fr) * 1979-12-17 1981-07-22 Cerberus Ag Système de signalisation fonctionnant avec radiation électromagnétique

Also Published As

Publication number Publication date
CH599645A5 (fr) 1978-05-31
JPS50114275A (fr) 1975-09-08
DE2448195A1 (de) 1975-05-28
CS186786B2 (en) 1978-12-29
NL7410079A (nl) 1975-05-28
FR2254024B3 (fr) 1979-02-02
BR7408707D0 (pt) 1975-08-26
DE2448195C2 (de) 1984-08-23
IN143206B (fr) 1977-10-15
IL45331A0 (en) 1974-10-22
CA1056931A (fr) 1979-06-19
CH580848A5 (fr) 1976-10-15
AU7330074A (en) 1976-03-18
IL45331A (en) 1977-12-30
DE2462876C2 (de) 1983-06-09
GB1490866A (en) 1977-11-02

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Legal Events

Date Code Title Description
TP Transmission of property
DR Decision of the appeal court due to an appeal at law against decisions of the director of the inpi, except decision of lapse