BE790355A - SMOKE DETECTOR - Google Patents

SMOKE DETECTOR

Info

Publication number
BE790355A
BE790355A BE790355DA BE790355A BE 790355 A BE790355 A BE 790355A BE 790355D A BE790355D A BE 790355DA BE 790355 A BE790355 A BE 790355A
Authority
BE
Belgium
Prior art keywords
smoke detector
smoke
detector
Prior art date
Application number
Other languages
French (fr)
Original Assignee
Bevaknings A B Securitas
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.)
Publication date
Publication of BE790355A publication Critical patent/BE790355A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
BE790355D 1971-10-20 SMOKE DETECTOR BE790355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13304/71A SE347377B (en) 1971-10-20 1971-10-20

Publications (1)

Publication Number Publication Date
BE790355A true BE790355A (en) 1973-02-15

Family

ID=20297181

Family Applications (1)

Application Number Title Priority Date Filing Date
BE790355D BE790355A (en) 1971-10-20 SMOKE DETECTOR

Country Status (8)

Country Link
US (1) US3838283A (en)
BE (1) BE790355A (en)
DE (1) DE2250820A1 (en)
FR (1) FR2175383A5 (en)
GB (1) GB1341372A (en)
NL (1) NL7214138A (en)
NO (1) NO126977B (en)
SE (1) SE347377B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075487A (en) * 1976-05-14 1978-02-21 Patent Development & Management Company Ionization chamber assembly
DE2652970C3 (en) * 1976-11-22 1979-09-06 Hartwig Ing.(Grad.) 2409 Scharbeutz Beyersdorf Ionization fire detectors
US4238679A (en) * 1978-12-07 1980-12-09 Conrac Corporation Dual-chamber ionization smoke detector assembly
FR2473201A1 (en) * 1980-01-02 1981-07-10 Gamma Electronic CAPACITIVE SMOKE DETECTOR WITH LOW IONIZATION SOURCE
JPH03196292A (en) * 1989-12-25 1991-08-27 Hochiki Corp Ionization type smoke sensor
ES2070748B1 (en) * 1993-05-17 1996-05-16 Kilsen Sa IONIC SMOKE DETECTOR.
DE9416314U1 (en) 1994-10-10 1994-12-01 Fuss Fritz Gmbh & Co smoke detector
DE19627620C1 (en) * 1996-07-09 1997-11-13 Bruker Saxonia Analytik Gmbh Electron capture detector for gas chromatography
US20050218811A1 (en) * 2004-03-31 2005-10-06 Schulman Michael B Gas discharge lamp with high-energy vacuum ultraviolet emission
EP1733220B1 (en) * 2004-03-31 2011-01-19 Mine Safety Appliances Company Photoionization detector
US7504962B2 (en) * 2005-11-22 2009-03-17 Joseph Stephen Smith Apparatus for enclosing a smoke detector
CN100414291C (en) * 2006-03-17 2008-08-27 中国科学院安徽光学精密机械研究所 Portable ionization chamber of photoionization detector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS446089Y1 (en) * 1966-03-30 1969-03-05
DE2029485B2 (en) * 1969-06-21 1971-11-25 Nittan Co. Ltd., Tokio IONIZATION SMOKE SENSORS
ZA704724B (en) * 1969-07-22 1971-03-31 Nittan Co Ltd Ionization smoke detector

Also Published As

Publication number Publication date
DE2250820A1 (en) 1973-04-26
NL7214138A (en) 1973-04-25
NO126977B (en) 1973-04-16
SE347377B (en) 1972-07-31
US3838283A (en) 1974-09-24
GB1341372A (en) 1973-12-19
FR2175383A5 (en) 1973-10-19

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