FR2055543A5 - - Google Patents

Info

Publication number
FR2055543A5
FR2055543A5 FR7027246A FR7027246A FR2055543A5 FR 2055543 A5 FR2055543 A5 FR 2055543A5 FR 7027246 A FR7027246 A FR 7027246A FR 7027246 A FR7027246 A FR 7027246A FR 2055543 A5 FR2055543 A5 FR 2055543A5
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
FR7027246A
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.)
Nittan Co Ltd
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
Priority claimed from JP6683969A external-priority patent/JPS4819118B1/ja
Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd
Application granted granted Critical
Publication of FR2055543A5 publication Critical patent/FR2055543A5/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/12—Provision for actuation of an alarm
    • G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors
    • 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
    • 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
    • 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

  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Toxicology (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
FR7027246A 1969-07-24 1970-07-23 Expired FR2055543A5 (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5797969 1969-07-24
JP6683969A JPS4819118B1 (enrdf_load_stackoverflow) 1969-08-26 1969-08-26

Publications (1)

Publication Number Publication Date
FR2055543A5 true FR2055543A5 (enrdf_load_stackoverflow) 1971-05-07

Family

ID=26399064

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7027246A Expired FR2055543A5 (enrdf_load_stackoverflow) 1969-07-24 1970-07-23

Country Status (7)

Country Link
US (1) US3688119A (enrdf_load_stackoverflow)
CH (1) CH526178A (enrdf_load_stackoverflow)
DE (1) DE2036447B2 (enrdf_load_stackoverflow)
FR (1) FR2055543A5 (enrdf_load_stackoverflow)
GB (1) GB1282536A (enrdf_load_stackoverflow)
IL (1) IL35151A (enrdf_load_stackoverflow)
NL (1) NL7010779A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2319168A1 (fr) * 1975-07-25 1977-02-18 Cerberus Ag Detecteur de fumee a ionisation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812362A (en) * 1973-07-02 1974-05-21 Honeywell Inc Smoke detector circuit
US4228429A (en) * 1977-12-29 1980-10-14 Ricoh Company, Ltd. Alarm system having phase-sensitive bridge circuit
US4401979A (en) * 1981-02-11 1983-08-30 General Signal Corporation Electrical controls for ionization smoke detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516083A (en) * 1965-12-02 1970-06-02 Denske Securitas As Electric alarm system,preferably for a fire alarm
JPS446089Y1 (enrdf_load_stackoverflow) * 1966-03-30 1969-03-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2319168A1 (fr) * 1975-07-25 1977-02-18 Cerberus Ag Detecteur de fumee a ionisation

Also Published As

Publication number Publication date
DE2036447A1 (de) 1971-02-25
GB1282536A (en) 1972-07-19
NL7010779A (enrdf_load_stackoverflow) 1971-01-26
IL35151A (en) 1973-08-29
US3688119A (en) 1972-08-29
CH526178A (de) 1972-07-31
IL35151A0 (en) 1970-10-30
DE2036447B2 (de) 1972-03-02

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Legal Events

Date Code Title Description
ST Notification of lapse