GB1329475A - Ionization fire alarm - Google Patents

Ionization fire alarm

Info

Publication number
GB1329475A
GB1329475A GB1528571*[A GB1528571A GB1329475A GB 1329475 A GB1329475 A GB 1329475A GB 1528571 A GB1528571 A GB 1528571A GB 1329475 A GB1329475 A GB 1329475A
Authority
GB
United Kingdom
Prior art keywords
chamber
alarm
ionization
fire
dust accumulation
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
GB1528571*[A
Other languages
English (en)
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
Publication of GB1329475A publication Critical patent/GB1329475A/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)
GB1528571*[A 1970-05-16 1971-05-17 Ionization fire alarm Expired GB1329475A (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
GB1329475A true GB1329475A (en) 1973-09-12

Family

ID=25759156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1528571*[A Expired GB1329475A (en) 1970-05-16 1971-05-17 Ionization fire alarm

Country Status (9)

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

Families Citing this family (10)

* 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
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 (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
RU2182366C2 (ru) * 2000-03-29 2002-05-10 Институт физико-технических проблем Ионизационный пожарный извещатель

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
FR1185495A (fr) * 1957-10-24 1959-07-31 Dispositif de détection et de contrôle de variations de composition d'un gaz, utilisable notamment comme prédétecteur d'incendie
LU48167A1 (enrdf_load_stackoverflow) * 1965-03-11 1966-09-12 Applic Electroniques Ets
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
CH446131A (de) * 1966-02-22 1967-10-31 Cerberus Ag Ionisationsfeuermelderanlage
CH497755A (de) * 1969-06-24 1970-10-15 Cerberus Ag Ionisationsfeuermelder

Also Published As

Publication number Publication date
ES197895Y (es) 1975-10-01
NO129270B (enrdf_load_stackoverflow) 1974-03-18
CH539310A (de) 1973-07-15
FR2090086A1 (enrdf_load_stackoverflow) 1972-01-14
CA948332A (en) 1974-05-28
BE767246A (fr) 1971-11-17
AR199378A1 (es) 1974-08-30
FR2090086B1 (enrdf_load_stackoverflow) 1975-01-17
US3795904A (en) 1974-03-05
ES197895U (es) 1975-05-01

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
SPA Amended specification published
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee