JPS5545506Y2 - - Google Patents
Info
- Publication number
- JPS5545506Y2 JPS5545506Y2 JP1972142726U JP14272672U JPS5545506Y2 JP S5545506 Y2 JPS5545506 Y2 JP S5545506Y2 JP 1972142726 U JP1972142726 U JP 1972142726U JP 14272672 U JP14272672 U JP 14272672U JP S5545506 Y2 JPS5545506 Y2 JP S5545506Y2
- Authority
- JP
- Japan
- 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
-
- 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)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1972142726U JPS5545506Y2 (en) | 1972-12-14 | 1972-12-14 | |
| GB5298273A GB1417790A (en) | 1972-12-14 | 1973-11-15 | Photoelectric smoke detector |
| DE2361403A DE2361403C3 (en) | 1972-12-14 | 1973-12-10 | Photoelectric smoke detector or smoke alarm |
| FR7344023A FR2211128A5 (en) | 1972-12-14 | 1973-12-10 | |
| US423530A US3887815A (en) | 1972-12-14 | 1973-12-10 | Photoelectric smoke detector |
| CH1747273A CH563630A5 (en) | 1972-12-14 | 1973-12-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1972142726U JPS5545506Y2 (en) | 1972-12-14 | 1972-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4996891U JPS4996891U (en) | 1974-08-21 |
| JPS5545506Y2 true JPS5545506Y2 (en) | 1980-10-24 |
Family
ID=15322143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1972142726U Expired JPS5545506Y2 (en) | 1972-12-14 | 1972-12-14 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3887815A (en) |
| JP (1) | JPS5545506Y2 (en) |
| CH (1) | CH563630A5 (en) |
| DE (1) | DE2361403C3 (en) |
| FR (1) | FR2211128A5 (en) |
| GB (1) | GB1417790A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH568627A5 (en) * | 1974-07-15 | 1975-10-31 | Cerberus Ag | |
| US4198627A (en) * | 1977-07-12 | 1980-04-15 | Cybernet Electronics Corporation | Photoelectric synchronous smoke sensor |
| US4125779A (en) * | 1977-07-13 | 1978-11-14 | Chloride, Incorporated | Smoke detector |
| US4193069A (en) * | 1978-03-13 | 1980-03-11 | American District Telegraph Company | Latching alarm smoke detector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3702447A (en) * | 1968-07-01 | 1972-11-07 | Xerox Corp | Electronic chopper system for use in facsimile communication comprising means for alternately grounding and ungrounding inputs of amplifier |
| US3655289A (en) * | 1971-01-22 | 1972-04-11 | Susquehanna Corp | Opacity meter with noise suppression |
| GB1409653A (en) * | 1971-09-23 | 1975-10-08 | Masson Scott Thrissell Eng Ltd | Methods and apparatus for inspecting the surface of sheet material |
-
1972
- 1972-12-14 JP JP1972142726U patent/JPS5545506Y2/ja not_active Expired
-
1973
- 1973-11-15 GB GB5298273A patent/GB1417790A/en not_active Expired
- 1973-12-10 FR FR7344023A patent/FR2211128A5/fr not_active Expired
- 1973-12-10 DE DE2361403A patent/DE2361403C3/en not_active Expired
- 1973-12-10 US US423530A patent/US3887815A/en not_active Expired - Lifetime
- 1973-12-13 CH CH1747273A patent/CH563630A5/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4996891U (en) | 1974-08-21 |
| DE2361403C3 (en) | 1975-08-21 |
| CH563630A5 (en) | 1975-06-30 |
| DE2361403A1 (en) | 1974-06-27 |
| DE2361403B2 (en) | 1975-01-09 |
| US3887815A (en) | 1975-06-03 |
| GB1417790A (en) | 1975-12-17 |
| FR2211128A5 (en) | 1974-07-12 |