CA948333A - Ionization smoke detector - Google Patents

Ionization smoke detector

Info

Publication number
CA948333A
CA948333A CA140,570A CA140570A CA948333A CA 948333 A CA948333 A CA 948333A CA 140570 A CA140570 A CA 140570A CA 948333 A CA948333 A CA 948333A
Authority
CA
Canada
Prior art keywords
smoke detector
ionization smoke
ionization
detector
smoke
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
CA140,570A
Other languages
English (en)
Other versions
CA140570S (en
Inventor
Kohei Yamada
Takao Furuichi
Tadao Ohsumi
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
Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd
Application granted granted Critical
Publication of CA948333A publication Critical patent/CA948333A/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
    • 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

  • 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)
CA140,570A 1971-05-13 1972-04-25 Ionization smoke detector Expired CA948333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3773971U JPS5537999Y2 (fr) 1971-05-13 1971-05-13

Publications (1)

Publication Number Publication Date
CA948333A true CA948333A (en) 1974-05-28

Family

ID=12505844

Family Applications (1)

Application Number Title Priority Date Filing Date
CA140,570A Expired CA948333A (en) 1971-05-13 1972-04-25 Ionization smoke detector

Country Status (7)

Country Link
JP (1) JPS5537999Y2 (fr)
AU (1) AU431572B2 (fr)
CA (1) CA948333A (fr)
CH (1) CH537067A (fr)
DE (1) DE2223360C3 (fr)
FR (1) FR2139246A5 (fr)
GB (1) GB1322299A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117169A (fr) * 1973-02-03 1974-11-08
JPS5531416Y2 (fr) * 1975-01-28 1980-07-26
JPS5260766A (en) * 1975-11-11 1977-05-19 Sankyo Seisakushiyo Kk Piezooelectric element lighter

Also Published As

Publication number Publication date
DE2223360A1 (de) 1972-11-23
AU4105272A (en) 1973-01-25
JPS5537999Y2 (fr) 1980-09-05
JPS4736292U (fr) 1972-12-22
DE2223360C3 (de) 1974-02-07
AU431572B2 (en) 1973-01-25
GB1322299A (en) 1973-07-04
CH537067A (de) 1973-06-29
DE2223360B2 (de) 1973-07-12
FR2139246A5 (fr) 1973-01-05

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