CH497755A - Ionization fire alarms - Google Patents

Ionization fire alarms

Info

Publication number
CH497755A
CH497755A CH966269A CH966269A CH497755A CH 497755 A CH497755 A CH 497755A CH 966269 A CH966269 A CH 966269A CH 966269 A CH966269 A CH 966269A CH 497755 A CH497755 A CH 497755A
Authority
CH
Switzerland
Prior art keywords
fire alarms
ionization fire
ionization
alarms
fire
Prior art date
Application number
CH966269A
Other languages
German (de)
Inventor
Andreas Dr Scheidweiler
Meier Otto Dipl-El-Ing
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 CH966269A priority Critical patent/CH497755A/en
Priority to US44091A priority patent/US3676680A/en
Priority to NLAANVRAGE7008421,A priority patent/NL168976C/en
Priority to DE2029794A priority patent/DE2029794C3/en
Priority to BE752058D priority patent/BE752058A/en
Priority to FR7022334A priority patent/FR2060523A5/fr
Priority to ZA704145A priority patent/ZA704145B/en
Priority to YU1575/70A priority patent/YU33338B/en
Priority to SE08660/70A priority patent/SE354139B/xx
Priority to NO2432/70A priority patent/NO125704B/no
Priority to GB30653/70A priority patent/GB1291755A/en
Publication of CH497755A publication Critical patent/CH497755A/en
Priority to HK104/78A priority patent/HK10478A/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)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
CH966269A 1969-06-24 1969-06-24 Ionization fire alarms CH497755A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
CH966269A CH497755A (en) 1969-06-24 1969-06-24 Ionization fire alarms
US44091A US3676680A (en) 1969-06-24 1970-06-08 Ionization fire alarm with insulation monitoring system
NLAANVRAGE7008421,A NL168976C (en) 1969-06-24 1970-06-10 IONIZATION FIRE ALARM.
DE2029794A DE2029794C3 (en) 1969-06-24 1970-06-16 Ionization fire alarms
BE752058D BE752058A (en) 1969-06-24 1970-06-16 IONIZATION FIRE ALARM WITH INSULATION MONITORING
FR7022334A FR2060523A5 (en) 1969-06-24 1970-06-17
ZA704145A ZA704145B (en) 1969-06-24 1970-06-17 Ionization fire alarm with insulation monitoring
YU1575/70A YU33338B (en) 1969-06-24 1970-06-22 Jonizacioni pozarni alarmni uredaj sa kontrolom izolacije
SE08660/70A SE354139B (en) 1969-06-24 1970-06-23
NO2432/70A NO125704B (en) 1969-06-24 1970-06-23
GB30653/70A GB1291755A (en) 1969-06-24 1970-06-24 Ionization fire alarm with insulation monitoring
HK104/78A HK10478A (en) 1969-06-24 1978-02-23 Ionization fire alarm with insulation monitoring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH966269A CH497755A (en) 1969-06-24 1969-06-24 Ionization fire alarms

Publications (1)

Publication Number Publication Date
CH497755A true CH497755A (en) 1970-10-15

Family

ID=4354339

Family Applications (1)

Application Number Title Priority Date Filing Date
CH966269A CH497755A (en) 1969-06-24 1969-06-24 Ionization fire alarms

Country Status (12)

Country Link
US (1) US3676680A (en)
BE (1) BE752058A (en)
CH (1) CH497755A (en)
DE (1) DE2029794C3 (en)
FR (1) FR2060523A5 (en)
GB (1) GB1291755A (en)
HK (1) HK10478A (en)
NL (1) NL168976C (en)
NO (1) NO125704B (en)
SE (1) SE354139B (en)
YU (1) YU33338B (en)
ZA (1) ZA704145B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2090086A1 (en) * 1970-05-16 1972-01-14 Preussag Ag Feuerschutz

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA933679A (en) * 1970-08-10 1973-09-11 Nittan Company Fire alarming system
US3964036A (en) * 1972-11-15 1976-06-15 Hochiki Corporation Ionization smoke detector co-used to issue fire alarm and detect ambient atmosphere
US3866195A (en) * 1973-05-07 1975-02-11 Fire Alert Company Combustion product detector and method of calibrating
US3906474A (en) * 1973-05-07 1975-09-16 Fire Alert Company Combustion products alarm
US4023152A (en) * 1973-10-01 1977-05-10 Matsushita Electric Works, Ltd. Ionization type smoke sensing device
US3944859A (en) * 1974-09-03 1976-03-16 Rca Corporation Bridge-balance detection circuit
USRE30117E (en) * 1975-07-25 1979-10-16 Cerberus Ag Ionization-type fire or smoke sensing system
US4038649A (en) * 1975-09-16 1977-07-26 Emhart Industries, Inc. Smoke detection alarm device
DE2713280C3 (en) * 1977-03-25 1986-10-23 Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss Function-testable fire alarm system
JPS583195Y2 (en) * 1977-10-20 1983-01-20 ツエルベルス・アクチェン・ゲゼルシャフト Ionic fire detector
DE3004753C2 (en) * 1980-02-08 1983-12-22 Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf Fire alarm device
NL180784C (en) * 1983-10-14 1987-04-16 Nederlanden Staat GAS SENSITIVE SENSOR.
DE3904979A1 (en) * 1989-02-18 1990-08-23 Beyersdorf Hartwig METHOD FOR OPERATING AN IONIZATION SMOKE DETECTOR AND IONIZATION SMOKE DETECTOR
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm
DE4028167A1 (en) * 1990-09-05 1992-03-12 Esser Sicherheitstechnik Ionisation fire detector - has common electrode with FET device coupled by conductive material to electrode
US9437100B2 (en) * 2013-11-02 2016-09-06 Jeffrey D. Zwirn Supervising alarm notification devices
CN112946458B (en) * 2021-02-22 2024-01-12 重庆四联测控技术有限公司 Forced alarm current output system and method of pressure transmitter
CN114446002B (en) * 2022-01-17 2023-10-31 厦门理工学院 Fire on-line monitoring method, device, medium and system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646556A (en) * 1950-06-17 1953-07-21 C O Two Fire Equipment Co Supervised alarm system
JPS446089Y1 (en) * 1966-03-30 1969-03-05
US3514603A (en) * 1966-12-22 1970-05-26 Johnson Service Co Ionization chamber detection apparatus having a low voltage source means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2090086A1 (en) * 1970-05-16 1972-01-14 Preussag Ag Feuerschutz

Also Published As

Publication number Publication date
US3676680A (en) 1972-07-11
YU157570A (en) 1976-04-30
NL168976C (en) 1982-05-17
DE2029794C3 (en) 1979-10-11
BE752058A (en) 1970-12-01
DE2029794B2 (en) 1973-04-26
GB1291755A (en) 1972-10-04
SE354139B (en) 1973-02-26
NL7008421A (en) 1970-12-29
NO125704B (en) 1972-10-16
ZA704145B (en) 1971-03-31
DE2029794A1 (en) 1971-01-07
HK10478A (en) 1978-03-03
YU33338B (en) 1976-10-31
FR2060523A5 (en) 1971-06-18

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Legal Events

Date Code Title Description
PL Patent ceased