CH583445A5 - - Google Patents

Info

Publication number
CH583445A5
CH583445A5 CH815974A CH815974A CH583445A5 CH 583445 A5 CH583445 A5 CH 583445A5 CH 815974 A CH815974 A CH 815974A CH 815974 A CH815974 A CH 815974A CH 583445 A5 CH583445 A5 CH 583445A5
Authority
CH
Switzerland
Application number
CH815974A
Original Assignee
Cerberus Ag
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 filed Critical Cerberus Ag
Priority to CH815974A priority Critical patent/CH583445A5/xx
Priority to DE19742454196 priority patent/DE2454196C3/en
Priority to GB1807075A priority patent/GB1478952A/en
Priority to FR7518562A priority patent/FR2274982A1/en
Publication of CH583445A5 publication Critical patent/CH583445A5/xx

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
CH815974A 1974-06-14 1974-06-14 CH583445A5 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH815974A CH583445A5 (en) 1974-06-14 1974-06-14
DE19742454196 DE2454196C3 (en) 1974-06-14 1974-11-15 Fire alarm system
GB1807075A GB1478952A (en) 1974-06-14 1975-04-30 Fire alarm devices and in installations including such devices
FR7518562A FR2274982A1 (en) 1974-06-14 1975-06-13 Circuit for fire alarm - uses ionisation chamber and alarm signal is provided when detector signal exceeds threshold level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH815974A CH583445A5 (en) 1974-06-14 1974-06-14

Publications (1)

Publication Number Publication Date
CH583445A5 true CH583445A5 (en) 1976-12-31

Family

ID=4336063

Family Applications (1)

Application Number Title Priority Date Filing Date
CH815974A CH583445A5 (en) 1974-06-14 1974-06-14

Country Status (2)

Country Link
CH (1) CH583445A5 (en)
FR (1) FR2274982A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212470A (en) * 1989-09-15 1993-05-18 Cerberus Ltd. Supervised fire alarm system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54150098A (en) * 1978-05-18 1979-11-24 Hochiki Co Flame detector
JPS583272B2 (en) * 1978-06-07 1983-01-20 ホーチキ株式会社 fire detector
DE3904979A1 (en) * 1989-02-18 1990-08-23 Beyersdorf Hartwig METHOD FOR OPERATING AN IONIZATION SMOKE DETECTOR AND IONIZATION SMOKE DETECTOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212470A (en) * 1989-09-15 1993-05-18 Cerberus Ltd. Supervised fire alarm system

Also Published As

Publication number Publication date
FR2274982A1 (en) 1976-01-09

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Legal Events

Date Code Title Description
PL Patent ceased