ZA828096B - Smoke detector - Google Patents
Smoke detectorInfo
- Publication number
- ZA828096B ZA828096B ZA828096A ZA828096A ZA828096B ZA 828096 B ZA828096 B ZA 828096B ZA 828096 A ZA828096 A ZA 828096A ZA 828096 A ZA828096 A ZA 828096A ZA 828096 B ZA828096 B ZA 828096B
- Authority
- ZA
- South Africa
- Prior art keywords
- radiation
- diaphragm
- solid angle
- smoke detector
- receiver
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Vehicle Body Suspensions (AREA)
- Gyroscopes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH7250/81A CH656474A5 (de) | 1981-11-11 | 1981-11-11 | Rauchdetektor. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA828096B true ZA828096B (en) | 1983-09-28 |
Family
ID=4322193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA828096A ZA828096B (en) | 1981-11-11 | 1982-11-04 | Smoke detector |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4524281A (de) |
| EP (1) | EP0079011B1 (de) |
| JP (1) | JPS5888643A (de) |
| AT (1) | ATE17061T1 (de) |
| AU (1) | AU556837B2 (de) |
| BR (1) | BR8206535A (de) |
| CA (1) | CA1208333A (de) |
| CH (1) | CH656474A5 (de) |
| DE (1) | DE3268057D1 (de) |
| DK (1) | DK502482A (de) |
| ES (1) | ES517588A0 (de) |
| FI (1) | FI75438C (de) |
| IL (1) | IL67159A0 (de) |
| NO (1) | NO157156C (de) |
| NZ (1) | NZ202364A (de) |
| YU (1) | YU252282A (de) |
| ZA (1) | ZA828096B (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS626144A (ja) * | 1985-07-03 | 1987-01-13 | Nittan Co Ltd | 光電式煙感知器 |
| US4814748A (en) * | 1987-11-09 | 1989-03-21 | Southwest Laboratories, Inc. | Temporary desensitization technique for smoke alarms |
| GB2259763B (en) * | 1991-09-20 | 1995-05-31 | Hochiki Co | Fire alarm system |
| ITTO20070355A1 (it) * | 2007-05-18 | 2008-11-19 | Elkron Spa | Dispositivo e metodo per rilevare fumo |
| GB2537940B (en) | 2015-05-01 | 2018-02-14 | Thorn Security | Fire detector drift compensation |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB966867A (en) * | 1961-01-05 | 1964-08-19 | Pyrene Co Ltd | Improvements relating to smoke indicators |
| GB1172354A (en) * | 1966-02-16 | 1969-11-26 | Pyrene Co Ltd | Improvements relating to Smoke Detectors |
| JPS4418923Y1 (de) * | 1966-09-16 | 1969-08-14 | ||
| US3868184A (en) * | 1973-07-25 | 1975-02-25 | Electro Signal Lab | Optical smoke detector with light scattering test device |
| JPS50134172A (de) * | 1974-04-17 | 1975-10-24 | ||
| US3985453A (en) * | 1974-07-19 | 1976-10-12 | Matsushita Electric Works, Ltd. | Light scattering type smoke detector |
| US4011458A (en) * | 1975-10-09 | 1977-03-08 | Pyrotector, Incorporated | Photoelectric detector with light source intensity regulation |
| FR2357888A1 (fr) * | 1976-04-01 | 1978-02-03 | Cerberus Ag | Detecteur de fumee |
| US4216377A (en) * | 1977-06-27 | 1980-08-05 | Nittan Company, Limited | Light scattering smoke detector |
| US4269510A (en) * | 1978-12-21 | 1981-05-26 | Cerberus Ag | Smoke detector |
| US4430646A (en) * | 1980-12-31 | 1984-02-07 | American District Telegraph Company | Forward scatter smoke detector |
-
1981
- 1981-11-11 CH CH7250/81A patent/CH656474A5/de not_active IP Right Cessation
-
1982
- 1982-10-29 DE DE8282110014T patent/DE3268057D1/de not_active Expired
- 1982-10-29 EP EP82110014A patent/EP0079011B1/de not_active Expired
- 1982-10-29 AT AT82110014T patent/ATE17061T1/de not_active IP Right Cessation
- 1982-11-02 NZ NZ202364A patent/NZ202364A/en unknown
- 1982-11-02 IL IL67159A patent/IL67159A0/xx unknown
- 1982-11-03 US US06/439,060 patent/US4524281A/en not_active Expired - Fee Related
- 1982-11-04 AU AU90175/82A patent/AU556837B2/en not_active Ceased
- 1982-11-04 ZA ZA828096A patent/ZA828096B/xx unknown
- 1982-11-04 CA CA000414876A patent/CA1208333A/en not_active Expired
- 1982-11-09 ES ES517588A patent/ES517588A0/es active Granted
- 1982-11-09 FI FI823838A patent/FI75438C/fi not_active IP Right Cessation
- 1982-11-10 NO NO823754A patent/NO157156C/no unknown
- 1982-11-10 BR BR8206535A patent/BR8206535A/pt unknown
- 1982-11-10 YU YU02522/82A patent/YU252282A/xx unknown
- 1982-11-11 JP JP57196869A patent/JPS5888643A/ja active Pending
- 1982-11-11 DK DK502482A patent/DK502482A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| ES8309022A1 (es) | 1983-10-01 |
| NO157156B (no) | 1987-10-19 |
| EP0079011A1 (de) | 1983-05-18 |
| NO157156C (no) | 1988-01-27 |
| FI823838L (fi) | 1983-05-12 |
| CA1208333A (en) | 1986-07-22 |
| FI823838A0 (fi) | 1982-11-09 |
| AU556837B2 (en) | 1986-11-20 |
| EP0079011B1 (de) | 1985-12-18 |
| DE3268057D1 (en) | 1986-01-30 |
| AU9017582A (en) | 1983-05-19 |
| ES517588A0 (es) | 1983-10-01 |
| IL67159A0 (en) | 1983-03-31 |
| FI75438C (fi) | 1988-06-09 |
| NO823754L (no) | 1983-05-13 |
| CH656474A5 (de) | 1986-06-30 |
| ATE17061T1 (de) | 1986-01-15 |
| JPS5888643A (ja) | 1983-05-26 |
| FI75438B (fi) | 1988-02-29 |
| NZ202364A (en) | 1986-04-11 |
| DK502482A (da) | 1983-05-12 |
| BR8206535A (pt) | 1983-09-27 |
| YU252282A (en) | 1985-10-31 |
| US4524281A (en) | 1985-06-18 |
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