CH520990A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
CH520990A
CH520990A CH1890270A CH1890270A CH520990A CH 520990 A CH520990 A CH 520990A CH 1890270 A CH1890270 A CH 1890270A CH 1890270 A CH1890270 A CH 1890270A CH 520990 A CH520990 A CH 520990A
Authority
CH
Switzerland
Prior art keywords
smoke detector
smoke
detector
Prior art date
Application number
CH1890270A
Other languages
German (de)
Inventor
Peter Dipl Ing Mueller
Original Assignee
Cerberus Ag
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 Cerberus Ag filed Critical Cerberus Ag
Priority to CH1890270A priority Critical patent/CH520990A/en
Priority to DE19712161354 priority patent/DE2161354A1/en
Priority to US00207791A priority patent/US3760395A/en
Priority to FR7145548A priority patent/FR2119459A5/fr
Priority to SE7116215A priority patent/SE371708B/xx
Priority to AU37162/71A priority patent/AU451854B2/en
Priority to GB5940771A priority patent/GB1366335A/en
Publication of CH520990A publication Critical patent/CH520990A/en
Priority to JP1978008008U priority patent/JPS5517274Y2/ja

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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
CH1890270A 1970-12-21 1970-12-21 Smoke detector CH520990A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CH1890270A CH520990A (en) 1970-12-21 1970-12-21 Smoke detector
DE19712161354 DE2161354A1 (en) 1970-12-21 1971-12-10 Smoke detector
US00207791A US3760395A (en) 1970-12-21 1971-12-14 Optical smoke detector
FR7145548A FR2119459A5 (en) 1970-12-21 1971-12-17
SE7116215A SE371708B (en) 1970-12-21 1971-12-17
AU37162/71A AU451854B2 (en) 1970-12-21 1971-12-21 Optical smoke detector
GB5940771A GB1366335A (en) 1970-12-21 1971-12-21 Optical smoke detector
JP1978008008U JPS5517274Y2 (en) 1970-12-21 1978-01-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1890270A CH520990A (en) 1970-12-21 1970-12-21 Smoke detector

Publications (1)

Publication Number Publication Date
CH520990A true CH520990A (en) 1972-03-31

Family

ID=4436016

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1890270A CH520990A (en) 1970-12-21 1970-12-21 Smoke detector

Country Status (8)

Country Link
US (1) US3760395A (en)
JP (1) JPS5517274Y2 (en)
AU (1) AU451854B2 (en)
CH (1) CH520990A (en)
DE (1) DE2161354A1 (en)
FR (1) FR2119459A5 (en)
GB (1) GB1366335A (en)
SE (1) SE371708B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448195A1 (en) * 1973-11-26 1975-05-28 Pyrotector Inc SMOKE DETECTOR WITH CIRCUIT TO OPERATE THESE

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE369964B (en) * 1973-01-18 1974-09-23 Satt Elektronik Ab
US4155653A (en) * 1977-10-14 1979-05-22 The United States Of America As Represented By The Secretary Of The Navy Smoke-measuring transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448195A1 (en) * 1973-11-26 1975-05-28 Pyrotector Inc SMOKE DETECTOR WITH CIRCUIT TO OPERATE THESE

Also Published As

Publication number Publication date
AU451854B2 (en) 1974-08-22
AU3716271A (en) 1973-06-28
SE371708B (en) 1974-11-25
JPS5517274Y2 (en) 1980-04-22
DE2161354A1 (en) 1972-07-13
US3760395A (en) 1973-09-18
JPS5396993U (en) 1978-08-07
FR2119459A5 (en) 1972-08-04
GB1366335A (en) 1974-09-11

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Legal Events

Date Code Title Description
PL Patent ceased