FR2475768B1 - - Google Patents

Info

Publication number
FR2475768B1
FR2475768B1 FR8102439A FR8102439A FR2475768B1 FR 2475768 B1 FR2475768 B1 FR 2475768B1 FR 8102439 A FR8102439 A FR 8102439A FR 8102439 A FR8102439 A FR 8102439A FR 2475768 B1 FR2475768 B1 FR 2475768B1
Authority
FR
France
Prior art keywords
voltage
direct current
current supply
supply voltage
measuring chamber
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
FR8102439A
Other languages
English (en)
Other versions
FR2475768A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6094144&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2475768(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of FR2475768A1 publication Critical patent/FR2475768A1/fr
Application granted granted Critical
Publication of FR2475768B1 publication Critical patent/FR2475768B1/fr
Granted legal-status Critical Current

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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the 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)
  • Fire Alarms (AREA)
FR8102439A 1980-02-08 1981-02-06 Dispositif avertisseur d'incendie Granted FR2475768A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3004753A DE3004753C2 (de) 1980-02-08 1980-02-08 Brandmeldeeinrichtung

Publications (2)

Publication Number Publication Date
FR2475768A1 FR2475768A1 (fr) 1981-08-14
FR2475768B1 true FR2475768B1 (fr) 1983-09-23

Family

ID=6094144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8102439A Granted FR2475768A1 (fr) 1980-02-08 1981-02-06 Dispositif avertisseur d'incendie

Country Status (4)

Country Link
EP (1) EP0033888B2 (fr)
AT (1) ATE11346T1 (fr)
DE (2) DE3004753C2 (fr)
FR (1) FR2475768A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189399A (en) * 1989-02-18 1993-02-23 Hartwig Beyersdorf Method of operating an ionization smoke alarm and ionization smoke alarm
DE3904979A1 (de) * 1989-02-18 1990-08-23 Beyersdorf Hartwig Verfahren zum betrieb eines ionisationsrauchmelders und ionisationsrauchmelder
CN106741986B (zh) * 2016-12-21 2023-08-29 太原航空仪表有限公司 具有驱动功能的振杆器
CN114325383B (zh) * 2021-12-20 2024-07-02 中国人民解放军总参谋部第六十研究所 一种无人直升机用无刷电机绕组故障检测系统及方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH497755A (de) * 1969-06-24 1970-10-15 Cerberus Ag Ionisationsfeuermelder
NO129270B (fr) * 1970-05-16 1974-03-18 Preussag Ag Feuerschutz
CA1019077A (en) * 1974-01-07 1977-10-11 Wilbur L. Ogden Fire detector
CH586941A5 (fr) * 1975-07-25 1977-04-15 Cerberus Ag
US4138664A (en) * 1976-12-14 1979-02-06 Pittway Corporation Warning device
US4302753A (en) * 1978-01-26 1981-11-24 Pittway Corporation Multi-function combustion detecting device

Also Published As

Publication number Publication date
EP0033888A2 (fr) 1981-08-19
DE3168215D1 (en) 1985-02-28
EP0033888B2 (fr) 1991-02-06
EP0033888B1 (fr) 1985-01-16
ATE11346T1 (de) 1985-02-15
DE3004753A1 (de) 1981-08-27
EP0033888A3 (en) 1982-11-03
FR2475768A1 (fr) 1981-08-14
DE3004753C2 (de) 1983-12-22

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Legal Events

Date Code Title Description
ST Notification of lapse