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CH468683A - Fire alarms with an electrical feedback arrangement - Google Patents

Fire alarms with an electrical feedback arrangement

Info

Publication number
CH468683A
CH468683A CH1875166A CH1875166A CH468683A CH 468683 A CH468683 A CH 468683A CH 1875166 A CH1875166 A CH 1875166A CH 1875166 A CH1875166 A CH 1875166A CH 468683 A CH468683 A CH 468683A
Authority
CH
Switzerland
Prior art keywords
feedback arrangement
fire alarms
electrical feedback
electrical
alarms
Prior art date
Application number
CH1875166A
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 CH1875166A priority Critical patent/CH468683A/en
Priority to AT93567A priority patent/AT278597B/en
Priority to DE19671566687 priority patent/DE1566687C/en
Priority to FR131749A priority patent/FR1547070A/en
Priority to BE707959D priority patent/BE707959A/xx
Priority to CH1820568A priority patent/CH486081A/en
Priority to US693937A priority patent/US3559196A/en
Priority to SE17925/67A priority patent/SE330659B/xx
Priority to DK656167AA priority patent/DK122548B/en
Priority to GB59190/67A priority patent/GB1200120A/en
Publication of CH468683A publication Critical patent/CH468683A/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)
CH1875166A 1966-12-29 1966-12-29 Fire alarms with an electrical feedback arrangement CH468683A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
CH1875166A CH468683A (en) 1966-12-29 1966-12-29 Fire alarms with an electrical feedback arrangement
AT93567A AT278597B (en) 1966-12-29 1967-02-01 Fire alarms with bistable properties
DE19671566687 DE1566687C (en) 1966-12-29 1967-12-08 Fire alarm
FR131749A FR1547070A (en) 1966-12-29 1967-12-11 Fire alarm with bistable properties
BE707959D BE707959A (en) 1966-12-29 1967-12-14
CH1820568A CH486081A (en) 1966-12-29 1967-12-15 Fire alarms with an electrical feedback arrangement
US693937A US3559196A (en) 1966-12-29 1967-12-27 Fire alarm with bistable characteristics
SE17925/67A SE330659B (en) 1966-12-29 1967-12-28
DK656167AA DK122548B (en) 1966-12-29 1967-12-28 Fire alarm.
GB59190/67A GB1200120A (en) 1966-12-29 1967-12-29 Improvements in or relating to fire alarms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1875166A CH468683A (en) 1966-12-29 1966-12-29 Fire alarms with an electrical feedback arrangement

Publications (1)

Publication Number Publication Date
CH468683A true CH468683A (en) 1969-02-15

Family

ID=4435069

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1875166A CH468683A (en) 1966-12-29 1966-12-29 Fire alarms with an electrical feedback arrangement

Country Status (7)

Country Link
US (1) US3559196A (en)
AT (1) AT278597B (en)
BE (1) BE707959A (en)
CH (1) CH468683A (en)
DK (1) DK122548B (en)
GB (1) GB1200120A (en)
SE (1) SE330659B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327497A1 (en) * 1973-05-30 1974-12-12 Benno Perren INDICATOR FOR RESISTANCE CHANGES WITH DOWNSTREAM ALARM DEVICE
DE2546970A1 (en) * 1975-10-20 1977-04-21 Preussag Ag Feuerschutz Ionisation chamber smoke warning sensor - has cylindrical sensing chamber and air admitted through mesh to minimise dust ingress
DE2726186A1 (en) * 1977-06-10 1978-12-14 Pan Data Ab Alarm system with common transmission wires - has alarm modules coupled to single pair of wires connecting to central station

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946374A (en) * 1970-08-13 1976-03-23 Sci Systems, Inc. Rate-of-change combustion and contamination detection device
JPS4940290Y1 (en) * 1970-11-19 1974-11-05
US3866195A (en) * 1973-05-07 1975-02-11 Fire Alert Company Combustion product detector and method of calibrating
US4109240A (en) * 1973-11-26 1978-08-22 Cerberus Ag. Ionization-type fire sensing system
DE2707409C2 (en) * 1977-02-21 1985-02-21 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Ionization fire detector
US7821412B2 (en) * 2006-09-15 2010-10-26 Applied Nanotech Holdings, Inc. Smoke detector
US9564045B2 (en) * 2014-04-14 2017-02-07 Stephen D. Ainsworth Alarm system testing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327497A1 (en) * 1973-05-30 1974-12-12 Benno Perren INDICATOR FOR RESISTANCE CHANGES WITH DOWNSTREAM ALARM DEVICE
DE2546970A1 (en) * 1975-10-20 1977-04-21 Preussag Ag Feuerschutz Ionisation chamber smoke warning sensor - has cylindrical sensing chamber and air admitted through mesh to minimise dust ingress
DE2726186A1 (en) * 1977-06-10 1978-12-14 Pan Data Ab Alarm system with common transmission wires - has alarm modules coupled to single pair of wires connecting to central station

Also Published As

Publication number Publication date
US3559196A (en) 1971-01-26
DK122548B (en) 1972-03-13
DE1566687B1 (en) 1971-04-01
AT278597B (en) 1970-02-10
GB1200120A (en) 1970-07-29
SE330659B (en) 1970-11-23
BE707959A (en) 1968-04-16

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