FR1568048A - - Google Patents

Info

Publication number
FR1568048A
FR1568048A FR1568048DA FR1568048A FR 1568048 A FR1568048 A FR 1568048A FR 1568048D A FR1568048D A FR 1568048DA FR 1568048 A FR1568048 A FR 1568048A
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
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 filed Critical
Application granted granted Critical
Publication of FR1568048A publication Critical patent/FR1568048A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/08—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of radioactive substances, e.g. alphatrons
    • 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
FR1568048D 1968-01-19 1968-01-19 Expired FR1568048A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR136627 1968-01-19

Publications (1)

Publication Number Publication Date
FR1568048A true FR1568048A (fr) 1969-05-23

Family

ID=8644792

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1568048D Expired FR1568048A (fr) 1968-01-19 1968-01-19

Country Status (4)

Country Link
DE (1) DE1900888C3 (fr)
FR (1) FR1568048A (fr)
GB (1) GB1211181A (fr)
SU (1) SU368776A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647217A1 (fr) * 1989-05-22 1990-11-23 Hochiki Co Capteur de fumee de type ionique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696054C (de) * 1936-12-02 1940-09-10 Walter Jaeger Verfahren und Einrichtung zur Gas- und Schwebestoffanalyse
DE718327C (de) * 1937-06-09 1942-03-09 Walter Jaeger Feuer- und Rauchmelder
DE720180C (de) * 1938-11-24 1942-04-27 Walter Jaeger Verfahren und Vorrichtung zur UEberwachung eines Gases
GB657548A (en) * 1947-12-15 1951-09-19 Electronic Instr Ltd Improvements in or relating to devices for testing gases
DE844220C (de) * 1949-08-01 1952-07-17 Elektro Watt Elek Sche Gasdetektor
US2646556A (en) * 1950-06-17 1953-07-21 C O Two Fire Equipment Co Supervised alarm system
FR1147287A (fr) * 1956-04-06 1957-11-21 Dispositif de détection de fumées, de gaz radioactifs, de flammes (ou de lumière)et de contacts
NL99411C (fr) * 1957-01-25
NL286979A (fr) * 1962-01-10 1900-01-01
LU48167A1 (fr) * 1965-03-11 1966-09-12 Applic Electroniques Ets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647217A1 (fr) * 1989-05-22 1990-11-23 Hochiki Co Capteur de fumee de type ionique

Also Published As

Publication number Publication date
DE1900888C3 (de) 1981-07-16
GB1211181A (en) 1970-11-04
DE1900888B2 (de) 1976-07-01
SU368776A3 (fr) 1973-01-26
DE1900888A1 (de) 1969-09-04

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Legal Events

Date Code Title Description
ST Notification of lapse