IT981112B - Rivelatore di fumo - Google Patents

Rivelatore di fumo

Info

Publication number
IT981112B
IT981112B IT21178/73A IT2117873A IT981112B IT 981112 B IT981112 B IT 981112B IT 21178/73 A IT21178/73 A IT 21178/73A IT 2117873 A IT2117873 A IT 2117873A IT 981112 B IT981112 B IT 981112B
Authority
IT
Italy
Prior art keywords
smoke detector
smoke
detector
Prior art date
Application number
IT21178/73A
Other languages
English (en)
Italian (it)
Original Assignee
Francais Detection Eletr
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 FR7207812A external-priority patent/FR2175265A5/fr
Priority claimed from FR7219006A external-priority patent/FR2185931A6/fr
Application filed by Francais Detection Eletr filed Critical Francais Detection Eletr
Application granted granted Critical
Publication of IT981112B publication Critical patent/IT981112B/it

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/60—Pipe-line systems wet, i.e. containing extinguishing material even when not in use
    • A62C35/605—Pipe-line systems wet, i.e. containing extinguishing material even when not in use operating and sounding alarm automatically
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • 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
    • 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

  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
IT21178/73A 1972-03-07 1973-03-05 Rivelatore di fumo IT981112B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7207812A FR2175265A5 (da) 1972-03-07 1972-03-07
FR7219006A FR2185931A6 (da) 1972-05-26 1972-05-26

Publications (1)

Publication Number Publication Date
IT981112B true IT981112B (it) 1974-10-10

Family

ID=26216960

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21178/73A IT981112B (it) 1972-03-07 1973-03-05 Rivelatore di fumo

Country Status (8)

Country Link
US (1) US3922655A (da)
BE (1) BE796166A (da)
CH (1) CH566059A5 (da)
DD (1) DD105339A5 (da)
ES (1) ES412391A1 (da)
GB (1) GB1427092A (da)
IT (1) IT981112B (da)
NL (1) NL7303147A (da)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001800A (en) * 1974-06-24 1977-01-04 Gentex Company Smoke detecting device
US4091364A (en) * 1974-09-09 1978-05-23 Unitec, Inc. Combustion detection device
US4011458A (en) * 1975-10-09 1977-03-08 Pyrotector, Incorporated Photoelectric detector with light source intensity regulation
US4038649A (en) * 1975-09-16 1977-07-26 Emhart Industries, Inc. Smoke detection alarm device
US4025915A (en) * 1975-10-06 1977-05-24 Electro Signal Lab, Inc. LED smoke detector circuit
DE2709487A1 (de) * 1976-03-17 1977-09-22 Nohmi Bosai Kogyo Co Ltd Brandmelder
CH600456A5 (da) * 1976-12-23 1978-06-15 Cerberus Ag
JPS5432182U (da) * 1977-08-05 1979-03-02
US4155653A (en) * 1977-10-14 1979-05-22 The United States Of America As Represented By The Secretary Of The Navy Smoke-measuring transducer
JPS5462800A (en) * 1977-10-28 1979-05-21 Nittan Co Ltd Light type smoke sensor having trouble detecting function
US4227191A (en) * 1978-02-21 1980-10-07 Samuel Raber Light emitting smoke detector
US4242673A (en) * 1978-03-13 1980-12-30 American District Telegraph Company Optical particle detector
US4249169A (en) * 1979-05-18 1981-02-03 Malinowski William J Optical smoke detector
CH655396B (da) * 1981-11-11 1986-04-15
US4680576A (en) * 1982-11-29 1987-07-14 Gentex Corporation Photoelectric smoke detector and alarm system
US6876305B2 (en) * 1999-12-08 2005-04-05 Gentex Corporation Compact particle sensor
US7564365B2 (en) * 2002-08-23 2009-07-21 Ge Security, Inc. Smoke detector and method of detecting smoke
AU2003268142A1 (en) * 2002-08-23 2004-03-11 General Electric Company Rapidly responding, false detection immune alarm signal producing smoke detector

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1828894A (en) * 1928-10-30 1931-10-27 Kidde & Co Walter Supervisory system for detecting suspended matter in fluids
US2537028A (en) * 1945-10-02 1951-01-09 C O Two Fire Equipment Co Smoke detector and signal
US2437071A (en) * 1945-10-02 1948-03-02 C O Two Fire Equipment Co Multiple smoke detector
US3226703A (en) * 1962-11-19 1965-12-28 Sam M Finkle Fire detecting device
US3409885A (en) * 1964-03-26 1968-11-05 Guardian Industries Smoke detection apparatus
US3474435A (en) * 1966-10-11 1969-10-21 Vericon Inc Vapor or particle detection devices
US3655289A (en) * 1971-01-22 1972-04-11 Susquehanna Corp Opacity meter with noise suppression
US3727056A (en) * 1972-03-03 1973-04-10 Electro Signal Lab Photon couplers with solid state lamps

Also Published As

Publication number Publication date
DD105339A5 (da) 1974-04-12
CH566059A5 (da) 1975-08-29
BE796166A (fr) 1973-07-02
ES412391A1 (es) 1976-01-16
GB1427092A (en) 1976-03-03
NL7303147A (da) 1973-09-11
US3922655A (en) 1975-11-25

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