CH512121A - Ionization smoke detector - Google Patents

Ionization smoke detector

Info

Publication number
CH512121A
CH512121A CH1067369A CH1067369A CH512121A CH 512121 A CH512121 A CH 512121A CH 1067369 A CH1067369 A CH 1067369A CH 1067369 A CH1067369 A CH 1067369A CH 512121 A CH512121 A CH 512121A
Authority
CH
Switzerland
Prior art keywords
smoke detector
ionization smoke
ionization
detector
smoke
Prior art date
Application number
CH1067369A
Other languages
German (de)
Inventor
Sasaki Koju
Kobayashi Akihiro
Original Assignee
Nittan Co Ltd
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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of CH512121A publication Critical patent/CH512121A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • 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
    • G01N27/66—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 and measuring current or voltage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Elimination Of Static Electricity (AREA)
CH1067369A 1968-07-11 1969-07-11 Ionization smoke detector CH512121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5851868 1968-07-11

Publications (1)

Publication Number Publication Date
CH512121A true CH512121A (en) 1971-08-31

Family

ID=13086634

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1067369A CH512121A (en) 1968-07-11 1969-07-11 Ionization smoke detector

Country Status (6)

Country Link
US (1) US3662177A (en)
BE (1) BE735386A (en)
CH (1) CH512121A (en)
DE (1) DE1933938B2 (en)
GB (1) GB1277091A (en)
NL (1) NL6910256A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH551057A (en) * 1973-04-17 1974-06-28 Cerberus Ag IONIZATION ALARM.
US3935465A (en) * 1973-04-24 1976-01-27 Geba-Gesellschaft Fuer Elektronische Brandmeldeanlagen Mbh Ionization analyzing air pollution, smoke and fire alarm device
JPS5538607B2 (en) * 1973-11-06 1980-10-06
US4245174A (en) 1978-04-24 1981-01-13 Isotec Industries Limited Dual ionization chamber
CA1267735A (en) * 1986-01-17 1990-04-10 Nohmi Bosai Kogyo Co., Ltd. Ionization type-smoke detector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447137A (en) * 1965-05-13 1969-05-27 Bunker Ramo Digital memory apparatus
JPS446089Y1 (en) * 1966-03-30 1969-03-05
US3514603A (en) * 1966-12-22 1970-05-26 Johnson Service Co Ionization chamber detection apparatus having a low voltage source means

Also Published As

Publication number Publication date
GB1277091A (en) 1972-06-07
US3662177A (en) 1972-05-09
NL6910256A (en) 1970-01-13
DE1933938A1 (en) 1970-02-05
BE735386A (en) 1969-12-01
DE1933938B2 (en) 1971-07-22

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Legal Events

Date Code Title Description
PL Patent ceased