GB1253196A - - Google Patents

Info

Publication number
GB1253196A
GB1253196A GB1253196DA GB1253196A GB 1253196 A GB1253196 A GB 1253196A GB 1253196D A GB1253196D A GB 1253196DA GB 1253196 A GB1253196 A GB 1253196A
Authority
GB
United Kingdom
Prior art keywords
ionization
march
current
cerberus
heading
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
Other languages
English (en)
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 filed Critical
Publication of GB1253196A publication Critical patent/GB1253196A/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)
GB1253196D 1969-03-27 1970-03-26 Expired GB1253196A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH462969A CH489070A (de) 1969-03-27 1969-03-27 Ionisationsfeuermelder

Publications (1)

Publication Number Publication Date
GB1253196A true GB1253196A (enrdf_load_stackoverflow) 1971-11-10

Family

ID=4279695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1253196D Expired GB1253196A (enrdf_load_stackoverflow) 1969-03-27 1970-03-26

Country Status (4)

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

Families Citing this family (5)

* 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
CH586941A5 (enrdf_load_stackoverflow) * 1975-07-25 1977-04-15 Cerberus Ag
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
US7821412B2 (en) * 2006-09-15 2010-10-26 Applied Nanotech Holdings, Inc. Smoke detector

Also Published As

Publication number Publication date
DE2011329A1 (de) 1971-06-03
US3714641A (en) 1973-01-30
CH489070A (de) 1970-04-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee