CH567310A5 - - Google Patents

Info

Publication number
CH567310A5
CH567310A5 CH827974A CH827974A CH567310A5 CH 567310 A5 CH567310 A5 CH 567310A5 CH 827974 A CH827974 A CH 827974A CH 827974 A CH827974 A CH 827974A CH 567310 A5 CH567310 A5 CH 567310A5
Authority
CH
Switzerland
Application number
CH827974A
Original Assignee
Honeywell 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 US00372552A external-priority patent/US3832552A/en
Priority claimed from US00372557A external-priority patent/US3849685A/en
Application filed by Honeywell Inc filed Critical Honeywell Inc
Publication of CH567310A5 publication Critical patent/CH567310A5/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/08—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of radioactive substances, e.g. alphatrons
    • 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
    • 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)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
CH827974A 1973-06-22 1974-06-17 CH567310A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00372552A US3832552A (en) 1973-06-22 1973-06-22 Dual chamber ionization smoke detector
US00372557A US3849685A (en) 1973-06-22 1973-06-22 Ionization chamber with recessed radioactive body

Publications (1)

Publication Number Publication Date
CH567310A5 true CH567310A5 (en) 1975-09-30

Family

ID=27005819

Family Applications (1)

Application Number Title Priority Date Filing Date
CH827974A CH567310A5 (en) 1973-06-22 1974-06-17

Country Status (3)

Country Link
AU (1) AU6988674A (en)
CH (1) CH567310A5 (en)
DE (1) DE2428325A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681932A5 (en) * 1990-12-04 1993-06-15 Cerberus Ag

Also Published As

Publication number Publication date
AU6988674A (en) 1975-12-11
DE2428325A1 (en) 1975-01-23

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Legal Events

Date Code Title Description
PL Patent ceased