DE2223360C3 - Ionisationsrauchfühler - Google Patents

Ionisationsrauchfühler

Info

Publication number
DE2223360C3
DE2223360C3 DE19722223360 DE2223360A DE2223360C3 DE 2223360 C3 DE2223360 C3 DE 2223360C3 DE 19722223360 DE19722223360 DE 19722223360 DE 2223360 A DE2223360 A DE 2223360A DE 2223360 C3 DE2223360 C3 DE 2223360C3
Authority
DE
Germany
Prior art keywords
ionization
source
smoke sensor
radioactive
chamber
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
DE19722223360
Other languages
German (de)
English (en)
Other versions
DE2223360B2 (de
DE2223360A1 (de
Inventor
Takao Furuichi
Saitama Kasukabe
Tadao Ohsumi
Kohei Yamada
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
Publication of DE2223360A1 publication Critical patent/DE2223360A1/de
Publication of DE2223360B2 publication Critical patent/DE2223360B2/de
Application granted granted Critical
Publication of DE2223360C3 publication Critical patent/DE2223360C3/de
Expired legal-status Critical Current

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
    • 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

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)
DE19722223360 1971-05-13 1972-05-12 Ionisationsrauchfühler Expired DE2223360C3 (de)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
DE2223360A1 DE2223360A1 (de) 1972-11-23
DE2223360B2 DE2223360B2 (de) 1973-07-12
DE2223360C3 true DE2223360C3 (de) 1974-02-07

Family

ID=12505844

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722223360 Expired DE2223360C3 (de) 1971-05-13 1972-05-12 Ionisationsrauchfühler

Country Status (7)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117169A (enFirst) * 1973-02-03 1974-11-08
JPS5531416Y2 (enFirst) * 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
DE2223360B2 (de) 1973-07-12
GB1322299A (en) 1973-07-04
JPS4736292U (enFirst) 1972-12-22
FR2139246A5 (enFirst) 1973-01-05
CH537067A (de) 1973-06-29
JPS5537999Y2 (enFirst) 1980-09-05
AU431572B2 (en) 1973-01-25
CA948333A (en) 1974-05-28
DE2223360A1 (de) 1972-11-23
AU4105272A (en) 1973-01-25

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee