GB2043977B - Detector for detecting smoke or fire - Google Patents
Detector for detecting smoke or fireInfo
- Publication number
- GB2043977B GB2043977B GB8005231A GB8005231A GB2043977B GB 2043977 B GB2043977 B GB 2043977B GB 8005231 A GB8005231 A GB 8005231A GB 8005231 A GB8005231 A GB 8005231A GB 2043977 B GB2043977 B GB 2043977B
- Authority
- GB
- United Kingdom
- Prior art keywords
- fire
- detector
- detecting smoke
- smoke
- detecting
- 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
- 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
-
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1339879A | 1979-02-21 | 1979-02-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2043977A GB2043977A (en) | 1980-10-08 |
GB2043977B true GB2043977B (en) | 1983-04-20 |
Family
ID=21759757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8005231A Expired GB2043977B (en) | 1979-02-21 | 1980-02-15 | Detector for detecting smoke or fire |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU530556B2 (de) |
DE (1) | DE2937686A1 (de) |
GB (1) | GB2043977B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61150096A (ja) * | 1984-12-25 | 1986-07-08 | ニツタン株式会社 | 火災警報装置 |
CH677413A5 (de) * | 1988-06-10 | 1991-05-15 | Cerberus Ag | |
DE4028188A1 (de) * | 1990-09-05 | 1992-03-12 | Esser Sicherheitstechnik | Brandmelder mit einem streulicht- und einem ionisationssystem |
FI916182A (fi) * | 1991-01-18 | 1992-07-19 | Hochiki Co | Kombinerad metod foer faststaellande av brand. |
US6362743B1 (en) | 1999-09-09 | 2002-03-26 | Ranco Incorporated Of Delaware | Smoke alarm with dual sensing technologies and dual power sources |
-
1979
- 1979-09-18 DE DE19792937686 patent/DE2937686A1/de not_active Withdrawn
- 1979-11-07 AU AU52591/79A patent/AU530556B2/en not_active Expired - Fee Related
-
1980
- 1980-02-15 GB GB8005231A patent/GB2043977B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2937686A1 (de) | 1980-09-11 |
GB2043977A (en) | 1980-10-08 |
AU5259179A (en) | 1981-06-25 |
AU530556B2 (en) | 1983-07-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |