CA948332A - Fire alarm with ionization chamber - Google Patents

Fire alarm with ionization chamber

Info

Publication number
CA948332A
CA948332A CA113,051A CA113051A CA948332A CA 948332 A CA948332 A CA 948332A CA 113051 A CA113051 A CA 113051A CA 948332 A CA948332 A CA 948332A
Authority
CA
Canada
Prior art keywords
fire alarm
ionization chamber
ionization
chamber
alarm
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
CA113,051A
Other languages
English (en)
Other versions
CA113051S (en
Inventor
Hartwig Beyersdorf
Lothar Rims
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.)
Preussag AG Feuerschutz
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/de
Application filed by Preussag AG Feuerschutz filed Critical Preussag AG Feuerschutz
Application granted granted Critical
Publication of CA948332A publication Critical patent/CA948332A/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

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)
CA113,051A 1970-05-16 1971-05-14 Fire alarm with ionization chamber Expired CA948332A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2024116 1970-05-16
DE19712121382 DE2121382A1 (de) 1971-04-30 1971-04-30 Iomsations Feuermelder

Publications (1)

Publication Number Publication Date
CA948332A true CA948332A (en) 1974-05-28

Family

ID=25759156

Family Applications (1)

Application Number Title Priority Date Filing Date
CA113,051A Expired CA948332A (en) 1970-05-16 1971-05-14 Fire alarm with ionization chamber

Country Status (9)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (8)

* 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 (fr) * 1977-08-29 1979-03-30 Debard Robert Detecteur, notamment d'incendie
US4208655A (en) * 1978-02-21 1980-06-17 Westinghouse Electric Corp. Protective system for electrical apparatus
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 (de) * 1980-02-08 1983-12-22 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Brandmeldeeinrichtung
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 (xx) * 1957-10-24
FR1494089A (fr) * 1965-03-11 1967-09-08 Pour Applic Electroniques Ets Circuit de détection et de mesure de signaux, notamment de signaux dérivés de l'ionisation d'un milieu, particulièrement d'un milieu gazeux
LU48167A1 (xx) * 1965-03-11 1966-09-12 Applic Electroniques Ets
CH446131A (de) * 1966-02-22 1967-10-31 Cerberus Ag Ionisationsfeuermelderanlage
CH497755A (de) * 1969-06-24 1970-10-15 Cerberus Ag Ionisationsfeuermelder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
BE767246A (fr) 1971-11-17
AR199378A1 (es) 1974-08-30
CH539310A (de) 1973-07-15
ES197895Y (es) 1975-10-01
US3795904A (en) 1974-03-05
NO129270B (xx) 1974-03-18
ES197895U (es) 1975-05-01
FR2090086A1 (xx) 1972-01-14
FR2090086B1 (xx) 1975-01-17
GB1329475A (en) 1973-09-12

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