CH282899A - Smoke detector and alarm device. - Google Patents

Smoke detector and alarm device.

Info

Publication number
CH282899A
CH282899A CH282899DA CH282899A CH 282899 A CH282899 A CH 282899A CH 282899D A CH282899D A CH 282899DA CH 282899 A CH282899 A CH 282899A
Authority
CH
Switzerland
Prior art keywords
alarm device
smoke detector
smoke
detector
alarm
Prior art date
Application number
Other languages
French (fr)
Inventor
Limited Ronald Trist Co
Original Assignee
Trist & Co Ltd Ronald
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 Trist & Co Ltd Ronald filed Critical Trist & Co Ltd Ronald
Publication of CH282899A publication Critical patent/CH282899A/en

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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
CH282899D 1949-01-05 1950-01-05 Smoke detector and alarm device. CH282899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB282899X 1949-01-05

Publications (1)

Publication Number Publication Date
CH282899A true CH282899A (en) 1952-05-15

Family

ID=10273294

Family Applications (1)

Application Number Title Priority Date Filing Date
CH282899D CH282899A (en) 1949-01-05 1950-01-05 Smoke detector and alarm device.

Country Status (3)

Country Link
BE (1) BE493102A (en)
CH (1) CH282899A (en)
FR (1) FR1007552A (en)

Also Published As

Publication number Publication date
FR1007552A (en) 1952-05-07
BE493102A (en)

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