CH580848A5 - - Google Patents

Info

Publication number
CH580848A5
CH580848A5 CH1079974A CH1079974A CH580848A5 CH 580848 A5 CH580848 A5 CH 580848A5 CH 1079974 A CH1079974 A CH 1079974A CH 1079974 A CH1079974 A CH 1079974A CH 580848 A5 CH580848 A5 CH 580848A5
Authority
CH
Switzerland
Application number
CH1079974A
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 CH580848A5 publication Critical patent/CH580848A5/xx

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)
CH1079974A 1973-11-26 1974-08-07 CH580848A5 (enrdf_load_stackoverflow)

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 (1)

Publication Number Publication Date
CH580848A5 true CH580848A5 (enrdf_load_stackoverflow) 1976-10-15

Family

ID=27024396

Family Applications (2)

Application Number Title Priority Date Filing Date
CH1079974A CH580848A5 (enrdf_load_stackoverflow) 1973-11-26 1974-08-07
CH560576A CH599645A5 (enrdf_load_stackoverflow) 1973-11-26 1974-08-07

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH560576A CH599645A5 (enrdf_load_stackoverflow) 1973-11-26 1974-08-07

Country Status (11)

Country Link
JP (1) JPS50114275A (enrdf_load_stackoverflow)
BR (1) BR7408707D0 (enrdf_load_stackoverflow)
CA (1) CA1056931A (enrdf_load_stackoverflow)
CH (2) CH580848A5 (enrdf_load_stackoverflow)
CS (1) CS186786B2 (enrdf_load_stackoverflow)
DE (2) DE2462876C2 (enrdf_load_stackoverflow)
FR (1) FR2254024B3 (enrdf_load_stackoverflow)
GB (1) GB1490866A (enrdf_load_stackoverflow)
IL (1) IL45331A (enrdf_load_stackoverflow)
IN (1) IN143206B (enrdf_load_stackoverflow)
NL (1) NL7410079A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145189A1 (en) * 1983-10-21 1985-06-19 COLE, Martin Terence Improvements relating to smoke detection apparatus

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5354000A (en) * 1976-10-26 1978-05-16 Matsushita Electric Works Ltd Detection signal processing circuit of photoelectric type smoke detectors
US4125779A (en) * 1977-07-13 1978-11-14 Chloride, Incorporated Smoke detector
CH638331A5 (de) * 1979-02-22 1983-09-15 Cerberus Ag Rauchdetektor.
DE3063643D1 (en) * 1979-02-26 1983-07-14 Cerberus Ag Fire detector using pulsed radiation
BE881812A (nl) * 1979-12-17 1980-06-16 Cerberus Ag Meldingsstelsel
JPS5716956U (enrdf_load_stackoverflow) * 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
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0145189A1 (en) * 1983-10-21 1985-06-19 COLE, Martin Terence Improvements relating to smoke detection apparatus

Also Published As

Publication number Publication date
DE2462876C2 (de) 1983-06-09
AU7330074A (en) 1976-03-18
CH599645A5 (enrdf_load_stackoverflow) 1978-05-31
IL45331A0 (en) 1974-10-22
IN143206B (enrdf_load_stackoverflow) 1977-10-15
DE2448195C2 (de) 1984-08-23
JPS50114275A (enrdf_load_stackoverflow) 1975-09-08
FR2254024A1 (enrdf_load_stackoverflow) 1975-07-04
GB1490866A (en) 1977-11-02
BR7408707D0 (pt) 1975-08-26
CA1056931A (en) 1979-06-19
IL45331A (en) 1977-12-30
DE2448195A1 (de) 1975-05-28
NL7410079A (nl) 1975-05-28
CS186786B2 (en) 1978-12-29
FR2254024B3 (enrdf_load_stackoverflow) 1979-02-02

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Legal Events

Date Code Title Description
PUE Assignment

Owner name: PYROTECTOR INCORPORATED

PL Patent ceased
PL Patent ceased