CH489070A - Ionization fire alarms - Google Patents

Ionization fire alarms

Info

Publication number
CH489070A
CH489070A CH462969A CH462969A CH489070A CH 489070 A CH489070 A CH 489070A CH 462969 A CH462969 A CH 462969A CH 462969 A CH462969 A CH 462969A CH 489070 A CH489070 A CH 489070A
Authority
CH
Switzerland
Prior art keywords
fire alarms
ionization fire
ionization
alarms
fire
Prior art date
Application number
CH462969A
Other languages
German (de)
Inventor
Andreas Dr Scheidweiler
Original Assignee
Cerberus Ag Werk Fuer Elektron
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 Werk Fuer Elektron filed Critical Cerberus Ag Werk Fuer Elektron
Priority to CH462969A priority Critical patent/CH489070A/en
Priority to DE19702011329 priority patent/DE2011329A1/en
Priority to US00019242A priority patent/US3714641A/en
Priority to GB1253196D priority patent/GB1253196A/en
Publication of CH489070A publication Critical patent/CH489070A/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)
CH462969A 1969-03-27 1969-03-27 Ionization fire alarms CH489070A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH462969A CH489070A (en) 1969-03-27 1969-03-27 Ionization fire alarms
DE19702011329 DE2011329A1 (en) 1969-03-27 1970-03-10 Ionization fire alarms
US00019242A US3714641A (en) 1969-03-27 1970-03-13 Ionization fire alarm
GB1253196D GB1253196A (en) 1969-03-27 1970-03-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH462969A CH489070A (en) 1969-03-27 1969-03-27 Ionization fire alarms

Publications (1)

Publication Number Publication Date
CH489070A true CH489070A (en) 1970-04-15

Family

ID=4279695

Family Applications (1)

Application Number Title Priority Date Filing Date
CH462969A CH489070A (en) 1969-03-27 1969-03-27 Ionization fire alarms

Country Status (4)

Country Link
US (1) US3714641A (en)
CH (1) CH489070A (en)
DE (1) DE2011329A1 (en)
GB (1) GB1253196A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626779A1 (en) * 1975-07-25 1977-02-10 Cerberus Ag IONIZING SMOKE DETECTOR

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023152A (en) * 1973-10-01 1977-05-10 Matsushita Electric Works, Ltd. Ionization type smoke sensing device
ZA786519B (en) * 1978-11-20 1980-02-27 Anglo Amer Corp South Africa Detector
CA1148279A (en) * 1979-12-14 1983-06-14 Andreas Scheidweiler Ionization smoke detector with increased operational reliability
WO2008034080A2 (en) * 2006-09-15 2008-03-20 Nano-Proprietary, Inc. Smoke detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626779A1 (en) * 1975-07-25 1977-02-10 Cerberus Ag IONIZING SMOKE DETECTOR

Also Published As

Publication number Publication date
DE2011329A1 (en) 1971-06-03
GB1253196A (en) 1971-11-10
US3714641A (en) 1973-01-30

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Legal Events

Date Code Title Description
PL Patent ceased