IT1000987B - OPTICAL SMOKE DETECTOR WITH PHOTO CELL - Google Patents
OPTICAL SMOKE DETECTOR WITH PHOTO CELLInfo
- Publication number
- IT1000987B IT1000987B IT9712/73A IT971273A IT1000987B IT 1000987 B IT1000987 B IT 1000987B IT 9712/73 A IT9712/73 A IT 9712/73A IT 971273 A IT971273 A IT 971273A IT 1000987 B IT1000987 B IT 1000987B
- Authority
- IT
- Italy
- Prior art keywords
- smoke detector
- photo cell
- optical smoke
- optical
- photo
- Prior art date
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
- 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
- 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)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US382058A US3863076A (en) | 1973-07-24 | 1973-07-24 | Optical smoke detector |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1000987B true IT1000987B (en) | 1976-04-10 |
Family
ID=23507370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT9712/73A IT1000987B (en) | 1973-07-24 | 1973-12-06 | OPTICAL SMOKE DETECTOR WITH PHOTO CELL |
Country Status (7)
Country | Link |
---|---|
US (1) | US3863076A (en) |
JP (1) | JPS5034872A (en) |
CA (1) | CA1022644A (en) |
DE (1) | DE2358706A1 (en) |
FR (1) | FR2239169A5 (en) |
GB (1) | GB1434808A (en) |
IT (1) | IT1000987B (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3985453A (en) * | 1974-07-19 | 1976-10-12 | Matsushita Electric Works, Ltd. | Light scattering type smoke detector |
JPS5229274A (en) * | 1975-08-29 | 1977-03-04 | Matsushita Electric Works Ltd | Light scattering type smoke detector |
US4053785A (en) * | 1976-01-07 | 1977-10-11 | General Signal Corporation | Optical smoke detector with smoke effect simulating means |
US4124298A (en) * | 1977-03-14 | 1978-11-07 | Electro Signal Lab, Inc. | Optical smoke detector inlet screen |
US4216377A (en) * | 1977-06-27 | 1980-08-05 | Nittan Company, Limited | Light scattering smoke detector |
US4249082A (en) * | 1977-09-20 | 1981-02-03 | Cybernet Electronics Corporation | Photoelectric smoke sensor box |
JPS6013449U (en) * | 1983-03-31 | 1985-01-29 | ホーチキ株式会社 | Structure of smoke detection part of scattered light smoke detector |
JPS59182337A (en) * | 1983-03-31 | 1984-10-17 | Matsushita Electric Works Ltd | Smoke detector |
JPS63163698A (en) * | 1986-12-26 | 1988-07-07 | ホーチキ株式会社 | Scattered light type smoke sensor |
US4904988A (en) * | 1989-03-06 | 1990-02-27 | Nesbit Charles E | Toy with a smoke detector |
NO312911B1 (en) | 1994-12-22 | 2002-07-15 | Budenheim Rud A Oetker Chemie | Anti-corrosion pigment and its use |
JP2010271894A (en) * | 2009-05-21 | 2010-12-02 | Panasonic Electric Works Co Ltd | Smoke detecting alarm |
EP2486553B1 (en) * | 2009-10-05 | 2015-04-15 | Cavius APS | Smoke alarm |
EP2752828A4 (en) * | 2011-08-29 | 2015-06-03 | Fenwal Controls Japan Ltd | Photoelectric smoke detector |
USD770929S1 (en) * | 2014-06-26 | 2016-11-08 | Life Safety Distribution Ag | Optical block |
DE102014019172B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using a compensating optical measuring system |
DE102014019773B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using the display of a mobile telephone |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537028A (en) * | 1945-10-02 | 1951-01-09 | C O Two Fire Equipment Co | Smoke detector and signal |
US2604597A (en) * | 1949-02-03 | 1952-07-22 | C O Two Fire Equipment Co | Smoke detector |
US3409885A (en) * | 1964-03-26 | 1968-11-05 | Guardian Industries | Smoke detection apparatus |
US3555532A (en) * | 1968-10-29 | 1971-01-12 | Graham Stuart Corp | Vapor or particle detection device |
DE2047997B2 (en) * | 1970-09-30 | 1976-10-07 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | ELECTRONIC SINGLE ENTER KEY |
US3723747A (en) * | 1971-06-03 | 1973-03-27 | Electro Signal Lab | Photoelectric detector with compensating photocell |
-
1973
- 1973-07-24 US US382058A patent/US3863076A/en not_active Expired - Lifetime
- 1973-11-13 GB GB5268473A patent/GB1434808A/en not_active Expired
- 1973-11-13 CA CA185,558A patent/CA1022644A/en not_active Expired
- 1973-11-19 FR FR7341045A patent/FR2239169A5/fr not_active Expired
- 1973-11-24 DE DE2358706A patent/DE2358706A1/en not_active Withdrawn
- 1973-11-26 JP JP48131821A patent/JPS5034872A/ja active Pending
- 1973-12-06 IT IT9712/73A patent/IT1000987B/en active
Also Published As
Publication number | Publication date |
---|---|
CA1022644A (en) | 1977-12-13 |
US3863076A (en) | 1975-01-28 |
GB1434808A (en) | 1976-05-05 |
FR2239169A5 (en) | 1975-02-21 |
DE2358706A1 (en) | 1975-02-06 |
JPS5034872A (en) | 1975-04-03 |
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