IT1054912B - Rilevatore di fumo azionato da dispositivo fotosensibile - Google Patents

Rilevatore di fumo azionato da dispositivo fotosensibile

Info

Publication number
IT1054912B
IT1054912B IT29655/75A IT2965575A IT1054912B IT 1054912 B IT1054912 B IT 1054912B IT 29655/75 A IT29655/75 A IT 29655/75A IT 2965575 A IT2965575 A IT 2965575A IT 1054912 B IT1054912 B IT 1054912B
Authority
IT
Italy
Prior art keywords
smoke detector
photosensitive device
detector operated
operated
photosensitive
Prior art date
Application number
IT29655/75A
Other languages
English (en)
Italian (it)
Original Assignee
Pyrotector 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
Priority claimed from US05/621,085 external-priority patent/US4011458A/en
Application filed by Pyrotector Inc filed Critical Pyrotector Inc
Application granted granted Critical
Publication of IT1054912B publication Critical patent/IT1054912B/it

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. 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

  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Emergency Alarm Devices (AREA)
IT29655/75A 1974-11-27 1975-11-26 Rilevatore di fumo azionato da dispositivo fotosensibile IT1054912B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52758974A 1974-11-27 1974-11-27
US05/621,085 US4011458A (en) 1975-10-09 1975-10-09 Photoelectric detector with light source intensity regulation

Publications (1)

Publication Number Publication Date
IT1054912B true IT1054912B (it) 1981-11-30

Family

ID=27062456

Family Applications (1)

Application Number Title Priority Date Filing Date
IT29655/75A IT1054912B (it) 1974-11-27 1975-11-26 Rilevatore di fumo azionato da dispositivo fotosensibile

Country Status (10)

Country Link
JP (1) JPS5624898B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU497359B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR7507896A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1052887A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH604299A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2553339A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2292975A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1529473A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1054912B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE406657B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53102085A (en) * 1977-02-18 1978-09-06 Mochida Pharm Co Ltd Instrument for measuring amount of bilirubin
DE2965650D1 (en) * 1979-02-01 1983-07-21 Bbc Brown Boveri & Cie Photoelectric system for monitoring flames and fumes
US4306230A (en) * 1979-12-10 1981-12-15 Honeywell Inc. Self-checking photoelectric smoke detector
JPH02123691U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1989-03-23 1990-10-11
EP1941785B1 (en) 2005-10-19 2011-01-19 Philips Intellectual Property & Standards GmbH A color lighting device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1164793A (en) * 1966-04-05 1969-09-24 Photain Controls Ltd Photo-electric Detection Devices
US3461443A (en) * 1966-11-07 1969-08-12 Alfred W Vasel Smoke detector with means indicating the failure of the light source
GB1222351A (en) * 1966-12-07 1971-02-10 Derek Charles Adams Improvements in or relating to fire-detection apparatus
GB1278205A (en) * 1970-02-11 1972-06-21 Shorrock Develpoments Ltd Smoke detecting device
US3736431A (en) * 1971-04-30 1973-05-29 Mobil Oil Corp System for monitoring a fluid stream

Also Published As

Publication number Publication date
GB1529473A (en) 1978-10-18
JPS5177386A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-07-05
CA1052887A (en) 1979-04-17
AU8670575A (en) 1977-05-26
SE406657B (sv) 1979-02-19
SE7513301L (sv) 1976-05-28
CH604299A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-09-15
FR2292975A1 (fr) 1976-06-25
FR2292975B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-09-18
AU497359B2 (en) 1978-12-07
JPS5624898B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-06-09
DE2553339A1 (de) 1976-08-12
BR7507896A (pt) 1976-08-10

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