CA1119318A - Detecteur de fumee a dispositif de reglage pour augmenter sa sensibilite - Google Patents
Detecteur de fumee a dispositif de reglage pour augmenter sa sensibiliteInfo
- Publication number
- CA1119318A CA1119318A CA000303682A CA303682A CA1119318A CA 1119318 A CA1119318 A CA 1119318A CA 000303682 A CA000303682 A CA 000303682A CA 303682 A CA303682 A CA 303682A CA 1119318 A CA1119318 A CA 1119318A
- Authority
- CA
- Canada
- Prior art keywords
- responsive
- photo
- ambient light
- 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
- 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
- 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)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US798,578 | 1977-05-19 | ||
US05/798,578 US4101785A (en) | 1977-05-19 | 1977-05-19 | Smoke detector with switch means for increasing the sensitivity |
US05/798,582 US4112310A (en) | 1977-05-19 | 1977-05-19 | Smoke detector with photo-responsive means for increasing the sensitivity during darkness |
US798,582 | 1977-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1119318A true CA1119318A (fr) | 1982-03-02 |
Family
ID=27122009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000303682A Expired CA1119318A (fr) | 1977-05-19 | 1978-05-18 | Detecteur de fumee a dispositif de reglage pour augmenter sa sensibilite |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA1119318A (fr) |
GB (1) | GB1602817A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220054545A (ko) * | 2019-05-23 | 2022-05-03 | 노스게이트 테크놀로지스 인코포레이티드 | 가스 재순환 시스템의 연기 제거 시스템 및 방법 |
CN116703252B (zh) * | 2023-08-08 | 2023-11-14 | 山东数川信息技术股份有限公司 | 基于SaaS的智慧楼宇信息管理方法 |
-
1978
- 1978-05-18 GB GB2046878A patent/GB1602817A/en not_active Expired
- 1978-05-18 CA CA000303682A patent/CA1119318A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1602817A (en) | 1981-11-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |