DK141948B - Brandalarmapparat med radioaktiv kilde til frembringelse af ioner. - Google Patents

Brandalarmapparat med radioaktiv kilde til frembringelse af ioner. Download PDF

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Publication number
DK141948B
DK141948B DK182774AA DK182774A DK141948B DK 141948 B DK141948 B DK 141948B DK 182774A A DK182774A A DK 182774AA DK 182774 A DK182774 A DK 182774A DK 141948 B DK141948 B DK 141948B
Authority
DK
Denmark
Prior art keywords
air
fire alarm
ionization
electrodes
ionization chamber
Prior art date
Application number
DK182774AA
Other languages
Danish (da)
English (en)
Other versions
DK141948C (fi
Inventor
Hansjoachim Paschedag
Thomas Lampart
Original Assignee
Cerberus Ag
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 Cerberus Ag filed Critical Cerberus Ag
Publication of DK141948B publication Critical patent/DK141948B/da
Application granted granted Critical
Publication of DK141948C publication Critical patent/DK141948C/da

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

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)
  • Fire Alarms (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
DK182774AA 1973-04-03 1974-04-02 Brandalarmapparat med radioaktiv kilde til frembringelse af ioner. DK141948B (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH474173A CH554033A (de) 1973-04-03 1973-04-03 Iomisations-feuermelde-einrichtung.
CH474173 1973-04-03

Publications (2)

Publication Number Publication Date
DK141948B true DK141948B (da) 1980-07-21
DK141948C DK141948C (fi) 1980-12-01

Family

ID=4281699

Family Applications (1)

Application Number Title Priority Date Filing Date
DK182774AA DK141948B (da) 1973-04-03 1974-04-02 Brandalarmapparat med radioaktiv kilde til frembringelse af ioner.

Country Status (10)

Country Link
JP (1) JPS503300A (fi)
CH (1) CH554033A (fi)
DE (1) DE2412557C3 (fi)
DK (1) DK141948B (fi)
FI (1) FI57496C (fi)
FR (1) FR2224819B1 (fi)
GB (1) GB1432531A (fi)
NO (1) NO137666C (fi)
SE (1) SE389570B (fi)
ZA (1) ZA741787B (fi)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE874157A (fr) * 1979-02-14 1979-05-29 Inst Nat Radio Elements Detecteur ionique
US4488044A (en) * 1981-11-20 1984-12-11 Pittway Corporation Ionization chamber for smoke detector and the like
AT378431B (de) * 1983-06-30 1985-08-12 Siemens Ag Oesterreich Probenkammer herkoemmlicher groesse zum einbau eines ionisations-rauchmelder-einsatzes
JPS60135757A (ja) * 1983-12-23 1985-07-19 Hochiki Corp ガスセンサ
NO158391C (no) * 1985-02-08 1988-08-31 Flaekt Ab Brannvarslingssystem for oppholdsrom.
EP0405473A3 (en) * 1989-06-28 1991-05-02 Pittway Corporation Low profile detector with multi-sided source
JP2520357B2 (ja) * 1993-01-29 1996-07-31 三洋電機株式会社 自動洗髪機
JP3714926B2 (ja) * 2002-08-22 2005-11-09 ホーチキ株式会社 サンプリング管式煙検知器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL224264A (fi) * 1957-10-24
CH486082A (de) * 1969-05-19 1970-02-15 Cerberus Ag Ionisationsfeuermelder

Also Published As

Publication number Publication date
DE2412557C3 (de) 1982-02-18
FR2224819B1 (fi) 1980-01-04
AU6701374A (en) 1975-09-25
DE2412557A1 (de) 1974-10-24
DK141948C (fi) 1980-12-01
DE2412557B2 (de) 1981-06-19
FI57496C (fi) 1980-08-11
NO741189L (no) 1974-10-04
SE389570B (sv) 1976-11-08
ZA741787B (en) 1975-03-26
NO137666C (no) 1978-04-12
FR2224819A1 (fi) 1974-10-31
GB1432531A (en) 1976-04-22
FI57496B (fi) 1980-04-30
JPS503300A (fi) 1975-01-14
NO137666B (no) 1977-12-19
CH554033A (de) 1974-09-13

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Legal Events

Date Code Title Description
PBP Patent lapsed