CH539310A - Ionization fire alarm - Google Patents

Ionization fire alarm

Info

Publication number
CH539310A
CH539310A CH717471A CH717471A CH539310A CH 539310 A CH539310 A CH 539310A CH 717471 A CH717471 A CH 717471A CH 717471 A CH717471 A CH 717471A CH 539310 A CH539310 A CH 539310A
Authority
CH
Switzerland
Prior art keywords
fire alarm
ionization fire
ionization
alarm
fire
Prior art date
Application number
CH717471A
Other languages
German (de)
Inventor
Beyersdorf Hartwig
Rims Lothar
Original Assignee
Preussag Ag Feuerschutz
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 DE19712121382 external-priority patent/DE2121382A1/en
Application filed by Preussag Ag Feuerschutz filed Critical Preussag Ag Feuerschutz
Publication of CH539310A publication Critical patent/CH539310A/en

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

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)
CH717471A 1970-05-16 1971-05-14 Ionization fire alarm CH539310A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2024116 1970-05-16
DE19712121382 DE2121382A1 (en) 1971-04-30 1971-04-30 Iomsations fire alarm

Publications (1)

Publication Number Publication Date
CH539310A true CH539310A (en) 1973-07-15

Family

ID=25759156

Family Applications (1)

Application Number Title Priority Date Filing Date
CH717471A CH539310A (en) 1970-05-16 1971-05-14 Ionization fire alarm

Country Status (9)

Country Link
US (1) US3795904A (en)
AR (1) AR199378A1 (en)
BE (1) BE767246A (en)
CA (1) CA948332A (en)
CH (1) CH539310A (en)
ES (1) ES197895Y (en)
FR (1) FR2090086B1 (en)
GB (1) GB1329475A (en)
NO (1) NO129270B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906474A (en) * 1973-05-07 1975-09-16 Fire Alert Company Combustion products alarm
FR2402256A1 (en) * 1977-08-29 1979-03-30 Debard Robert Fire detector and alarm system - has two radioactive ionisation chambers connected to resistances to form wheatstone bridge
US4208655A (en) * 1978-02-21 1980-06-17 Westinghouse Electric Corp. Protective system for electrical apparatus
USRE30620E (en) * 1978-07-03 1981-05-19 P. R. Mallory & Co. Inc. High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means
ZA786519B (en) * 1978-11-20 1980-02-27 Anglo Amer Corp South Africa Detector
US4383253A (en) * 1979-01-29 1983-05-10 International Quartz Ltd. Ionization smoke detector
US4270123A (en) * 1979-02-26 1981-05-26 Universal Det, S.A.R.L. Detector for indicating a fire or detector malfunction
DE3004753C2 (en) * 1980-02-08 1983-12-22 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Fire alarm device
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2950387A (en) * 1957-08-16 1960-08-23 Bell & Howell Co Gas analysis
NL224264A (en) * 1957-10-24
FR1494089A (en) * 1965-03-11 1967-09-08 Pour Applic Electroniques Ets Circuit for detecting and measuring signals, in particular signals derived from the ionization of a medium, particularly a gaseous medium
LU48167A1 (en) * 1965-03-11 1966-09-12 Applic Electroniques Ets
CH446131A (en) * 1966-02-22 1967-10-31 Cerberus Ag Ionization fire alarm system
CH497755A (en) * 1969-06-24 1970-10-15 Cerberus Ag Ionization fire alarms

Also Published As

Publication number Publication date
AR199378A1 (en) 1974-08-30
FR2090086A1 (en) 1972-01-14
FR2090086B1 (en) 1975-01-17
US3795904A (en) 1974-03-05
BE767246A (en) 1971-11-17
CA948332A (en) 1974-05-28
NO129270B (en) 1974-03-18
ES197895U (en) 1975-05-01
GB1329475A (en) 1973-09-12
ES197895Y (en) 1975-10-01

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Legal Events

Date Code Title Description
PL Patent ceased