FR1076231A - Advanced smoke detector - Google Patents
Advanced smoke detectorInfo
- Publication number
- FR1076231A FR1076231A FR1076231DA FR1076231A FR 1076231 A FR1076231 A FR 1076231A FR 1076231D A FR1076231D A FR 1076231DA FR 1076231 A FR1076231 A FR 1076231A
- Authority
- FR
- France
- Prior art keywords
- smoke detector
- advanced
- advanced smoke
- detector
- smoke
- Prior art date
- 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
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
- G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1076231X | 1952-02-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1076231A true FR1076231A (en) | 1954-10-25 |
Family
ID=10872196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1076231D Expired FR1076231A (en) | 1952-02-21 | 1953-02-20 | Advanced smoke detector |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1076231A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1192569B (en) * | 1961-04-07 | 1965-05-06 | British American Tobacco Co | Checker for cigarette filters |
-
1953
- 1953-02-20 FR FR1076231D patent/FR1076231A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1192569B (en) * | 1961-04-07 | 1965-05-06 | British American Tobacco Co | Checker for cigarette filters |
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