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CA1015073A - Ionization chamber with recessed radioactive body - Google Patents

Ionization chamber with recessed radioactive body

Info

Publication number
CA1015073A
CA1015073A CA200,385A CA200385A CA1015073A CA 1015073 A CA1015073 A CA 1015073A CA 200385 A CA200385 A CA 200385A CA 1015073 A CA1015073 A CA 1015073A
Authority
CA
Canada
Prior art keywords
recessed
ionization chamber
radioactive body
radioactive
ionization
Prior art date
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
CA200,385A
Other versions
CA200385S (en
Inventor
Arlon D. Kompelien
Larry D. Larsen
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.)
Honeywell Inc
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
Application filed by Honeywell Inc filed Critical Honeywell Inc
Application granted granted Critical
Publication of CA1015073A publication Critical patent/CA1015073A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
CA200,385A 1973-06-22 1974-05-21 Ionization chamber with recessed radioactive body Expired CA1015073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00372557A US3849685A (en) 1973-06-22 1973-06-22 Ionization chamber with recessed radioactive body

Publications (1)

Publication Number Publication Date
CA1015073A true CA1015073A (en) 1977-08-02

Family

ID=23468654

Family Applications (1)

Application Number Title Priority Date Filing Date
CA200,385A Expired CA1015073A (en) 1973-06-22 1974-05-21 Ionization chamber with recessed radioactive body

Country Status (2)

Country Link
US (1) US3849685A (en)
CA (1) CA1015073A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2391742A1 (en) * 1977-05-23 1978-12-22 Brunswick Corp Early warning fire detector - has through-flow ionisation detector with collector system for small particles
US4222046A (en) * 1978-07-31 1980-09-09 Honeywell Inc. Abnormal condition responsive means with periodic high sensitivity

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702898A (en) * 1953-10-06 1955-02-22 Electro Watt Electrical And In Gas-responsive control apparatus
CH483682A (en) * 1969-03-28 1969-12-31 Cerberus Ag Automatic fire alarm with at least one measuring chamber
CH486082A (en) * 1969-05-19 1970-02-15 Cerberus Ag Ionization fire alarms

Also Published As

Publication number Publication date
US3849685A (en) 1974-11-19

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