FR2409769B1 - - Google Patents

Info

Publication number
FR2409769B1
FR2409769B1 FR7831561A FR7831561A FR2409769B1 FR 2409769 B1 FR2409769 B1 FR 2409769B1 FR 7831561 A FR7831561 A FR 7831561A FR 7831561 A FR7831561 A FR 7831561A FR 2409769 B1 FR2409769 B1 FR 2409769B1
Authority
FR
France
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
FR7831561A
Other versions
FR2409769A1 (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
Application filed by Individual filed Critical Individual
Publication of FR2409769A1 publication Critical patent/FR2409769A1/fr
Application granted granted Critical
Publication of FR2409769B1 publication Critical patent/FR2409769B1/fr
Granted legal-status Critical Current

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
    • G08B17/113—Constructional details

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
FR7831561A 1977-11-25 1978-11-08 Detecteur d'incendie a ionisation Granted FR2409769A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2752690A DE2752690C3 (de) 1977-11-25 1977-11-25 Ionisations-Brandmelder

Publications (2)

Publication Number Publication Date
FR2409769A1 FR2409769A1 (fr) 1979-06-22
FR2409769B1 true FR2409769B1 (fr) 1983-03-11

Family

ID=6024646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7831561A Granted FR2409769A1 (fr) 1977-11-25 1978-11-08 Detecteur d'incendie a ionisation

Country Status (9)

Country Link
US (1) US4243981A (fr)
JP (1) JPS6137117Y2 (fr)
AU (1) AU519018B2 (fr)
BE (1) BE871832A (fr)
CA (1) CA1109166A (fr)
CH (1) CH638634A5 (fr)
DE (1) DE2752690C3 (fr)
FR (1) FR2409769A1 (fr)
GB (1) GB1588491A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4755682A (en) * 1986-10-07 1988-07-05 The United States Of America As Represented By The United States Department Of Energy Ionization monitor with improved ultra-high megohm resistor
CN1058725C (zh) * 1997-05-08 2000-11-22 南帝化学工业股份有限公司 一种不饱和共聚物加氢的方法及其所用的含双金属的催化剂体系
CA2329551A1 (fr) 2000-12-22 2002-06-22 Bayer Inc. Procede de production de caoutchouc nitrile hydrogene
DE102014019172B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mit einem kompensierenden optischen Messsystem
DE102014019773B4 (de) 2014-12-17 2023-12-07 Elmos Semiconductor Se Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mittels des Displays eines Mobiltelefons
US10571312B2 (en) 2017-06-29 2020-02-25 Databuoy Corporation Adjustable mounting system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594751A (en) * 1968-02-29 1971-07-20 Brk Electronics Detection of products of combustion
US3728706A (en) * 1970-09-28 1973-04-17 Gen Signal Corp System for indicating aerosols in the atmosphere
BE760527A (fr) * 1970-12-18 1971-05-27 Int Plastic Fire Hose Detecteur ionique ponctuel
US3842409A (en) * 1972-12-13 1974-10-15 Unitec Inc Ionization detector apparatus
US3903419A (en) * 1973-04-20 1975-09-02 Fire Alert Company Combustion products detector assembly and method of operation
US3934145A (en) * 1973-10-25 1976-01-20 Emhart Corporation Ionization smoke detector and alarm system
CH597659A5 (fr) * 1976-02-06 1978-04-14 Cerberus Ag

Also Published As

Publication number Publication date
CA1109166A (fr) 1981-09-15
FR2409769A1 (fr) 1979-06-22
GB1588491A (en) 1981-04-23
CH638634A5 (de) 1983-09-30
DE2752690A1 (de) 1979-05-31
DE2752690B2 (de) 1980-08-07
BE871832A (fr) 1979-03-01
AU4169978A (en) 1979-05-31
JPS6137117Y2 (fr) 1986-10-27
DE2752690C3 (de) 1981-04-16
JPS5483393U (fr) 1979-06-13
US4243981A (en) 1981-01-06
AU519018B2 (en) 1981-11-05

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Legal Events

Date Code Title Description
ST Notification of lapse