NL161280B - FIRE ALARM DEVICE. - Google Patents

FIRE ALARM DEVICE.

Info

Publication number
NL161280B
NL161280B NL6801899.A NL6801899A NL161280B NL 161280 B NL161280 B NL 161280B NL 6801899 A NL6801899 A NL 6801899A NL 161280 B NL161280 B NL 161280B
Authority
NL
Netherlands
Prior art keywords
alarm device
fire alarm
fire
alarm
Prior art date
Application number
NL6801899.A
Other languages
Dutch (nl)
Other versions
NL6801899A (en
NL161280C (en
Original Assignee
Vigifeu Sa
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 Vigifeu Sa filed Critical Vigifeu Sa
Publication of NL6801899A publication Critical patent/NL6801899A/xx
Publication of NL161280B publication Critical patent/NL161280B/en
Application granted granted Critical
Publication of NL161280C publication Critical patent/NL161280C/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/12—Provision for actuation of an alarm
    • G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors
    • 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
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
NL6801899.A 1967-02-09 1968-02-09 FIRE ALARM. NL161280C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR94266A FR1540305A (en) 1967-02-09 1967-02-09 Advanced fire detection device

Publications (3)

Publication Number Publication Date
NL6801899A NL6801899A (en) 1968-08-12
NL161280B true NL161280B (en) 1979-08-15
NL161280C NL161280C (en) 1980-01-15

Family

ID=8625028

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6801899.A NL161280C (en) 1967-02-09 1968-02-09 FIRE ALARM.

Country Status (8)

Country Link
US (1) US3582646A (en)
AT (1) AT292510B (en)
BE (1) BE710468A (en)
DE (1) DE1616020B2 (en)
ES (1) ES350324A1 (en)
FR (1) FR1540305A (en)
GB (1) GB1144624A (en)
NL (1) NL161280C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935492A (en) * 1970-11-13 1976-01-27 Nittan Company, Ltd. Ionization smoke detector
US3832552A (en) * 1973-06-22 1974-08-27 Honeywell Inc Dual chamber ionization smoke detector
FR2528980A1 (en) * 1982-06-17 1983-12-23 Pgep IONIZATION LEVEL DETECTOR OF A GAS MEDIUM CONTROLLED BY ELECTRIC ARC
CN107219548B (en) * 2017-07-31 2023-10-27 四川省核地质调查研究所 Portable anti-Compton detector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL99411C (en) * 1957-01-25
CH355380A (en) * 1957-10-30 1961-06-30 Cerberus Gmbh Device for determining changes in the composition of a gas
NL298945A (en) * 1962-10-12

Also Published As

Publication number Publication date
GB1144624A (en) 1969-03-05
DE1616020B2 (en) 1976-02-12
US3582646A (en) 1971-06-01
AT292510B (en) 1971-08-25
NL6801899A (en) 1968-08-12
FR1540305A (en) 1968-09-27
ES350324A1 (en) 1969-04-16
BE710468A (en) 1968-06-17
NL161280C (en) 1980-01-15
DE1616020A1 (en) 1971-03-04

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: VIGIFEU