FR2239169A5 - - Google Patents

Info

Publication number
FR2239169A5
FR2239169A5 FR7341045A FR7341045A FR2239169A5 FR 2239169 A5 FR2239169 A5 FR 2239169A5 FR 7341045 A FR7341045 A FR 7341045A FR 7341045 A FR7341045 A FR 7341045A FR 2239169 A5 FR2239169 A5 FR 2239169A5
Authority
FR
France
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
Application number
FR7341045A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electro Signal Lab Inc
Original Assignee
Electro Signal Lab Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Electro Signal Lab Inc filed Critical Electro Signal Lab Inc
Application granted granted Critical
Publication of FR2239169A5 publication Critical patent/FR2239169A5/fr
Expired legal-status Critical Current

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)
FR7341045A 1973-07-24 1973-11-19 Expired FR2239169A5 (en)

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
FR2239169A5 true FR2239169A5 (en) 1975-02-21

Family

ID=23507370

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341045A Expired FR2239169A5 (en) 1973-07-24 1973-11-19

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609172A1 (en) * 1986-12-26 1988-07-01 Hochiki Co SMOKE DETECTOR BY DISPERSE LIGHT

Families Citing this family (16)

* Cited by examiner, † Cited by third party
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
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
EP2801959A1 (en) * 2009-10-05 2014-11-12 Cavius APS Smoke alarm
RU2571581C2 (en) * 2011-08-29 2015-12-20 Фенвал Контролз Оф Джэпэн, Лтд. Photoelectric smoke sensor
USD770929S1 (en) * 2014-06-26 2016-11-08 Life Safety Distribution Ag Optical block
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
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609172A1 (en) * 1986-12-26 1988-07-01 Hochiki Co SMOKE DETECTOR BY DISPERSE LIGHT

Also Published As

Publication number Publication date
JPS5034872A (en) 1975-04-03
DE2358706A1 (en) 1975-02-06
GB1434808A (en) 1976-05-05
IT1000987B (en) 1976-04-10
US3863076A (en) 1975-01-28
CA1022644A (en) 1977-12-13

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Legal Events

Date Code Title Description
ST Notification of lapse