FR1569928A - - Google Patents
Info
- Publication number
- FR1569928A FR1569928A FR1569928DA FR1569928A FR 1569928 A FR1569928 A FR 1569928A FR 1569928D A FR1569928D A FR 1569928DA FR 1569928 A FR1569928 A FR 1569928A
- 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.)
- Expired
Links
Classifications
-
- 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
-
- 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
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
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)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63272867A | 1967-04-21 | 1967-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1569928A true FR1569928A (fr) | 1969-06-06 |
Family
ID=24536696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1569928D Expired FR1569928A (fr) | 1967-04-21 | 1968-04-17 |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT288208B (fr) |
CH (1) | CH464743A (fr) |
FR (1) | FR1569928A (fr) |
GB (1) | GB1179531A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU573243B2 (en) * | 1983-08-12 | 1988-06-02 | Vision Systems Limited | Pollution detecting apparatus |
-
1968
- 1968-04-03 GB GB06054/68A patent/GB1179531A/en not_active Expired
- 1968-04-17 FR FR1569928D patent/FR1569928A/fr not_active Expired
- 1968-04-19 CH CH586168A patent/CH464743A/de unknown
- 1968-04-19 AT AT382668A patent/AT288208B/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CH464743A (de) | 1968-10-31 |
GB1179531A (en) | 1970-01-28 |
AT288208B (de) | 1971-02-25 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |