FR2050400A1 - - Google Patents
Info
- Publication number
- FR2050400A1 FR2050400A1 FR7019544A FR7019544A FR2050400A1 FR 2050400 A1 FR2050400 A1 FR 2050400A1 FR 7019544 A FR7019544 A FR 7019544A FR 7019544 A FR7019544 A FR 7019544A FR 2050400 A1 FR2050400 A1 FR 2050400A1
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/122—Circuits particularly adapted therefor, e.g. linearising 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
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4978869U JPS4810857Y1 (fr) | 1969-05-28 | 1969-05-28 | |
JP5264269U JPS4810858Y1 (fr) | 1969-06-05 | 1969-06-05 | |
JP6608369U JPS4838224Y1 (fr) | 1969-07-11 | 1969-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2050400A1 true FR2050400A1 (fr) | 1971-04-02 |
Family
ID=27293736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7019544A Withdrawn FR2050400A1 (fr) | 1969-05-28 | 1970-05-28 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3609732A (fr) |
DE (1) | DE2025770C3 (fr) |
FR (1) | FR2050400A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7411389A (en) * | 1974-08-27 | 1976-03-02 | Westfaelische Berggewerkschaft | Carbon monoxide detection using semiconductors - with temp variation giving long term stability and methane detection |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3786462A (en) * | 1971-03-18 | 1974-01-15 | Trw Inc | Carbon monoxide alarm for automobiles |
BE788001A (fr) * | 1971-11-01 | 1973-02-26 | T J Connelly Construction Cy I | Circuit sensible a la fumee, avec batterie de secours |
US3951603A (en) * | 1972-07-08 | 1976-04-20 | Hitachi, Ltd. | Gas-sensor element and method for detecting reducing gas or oxygen gas |
US3953173A (en) * | 1972-07-08 | 1976-04-27 | Hitachi, Ltd. | Gas-sensor element and method for detecting oxidizable gas |
GB1451231A (en) * | 1973-03-30 | 1976-09-29 | Nat Res Dev | Gas sensitive devices |
US3882478A (en) * | 1973-05-14 | 1975-05-06 | Malgard Corp | Gas and smoke alarm |
DE2337988B2 (de) * | 1973-07-24 | 1978-11-30 | C.S.S. Container Storage Service Establishment, Vaduz | Vorrichtung zur Bestimmung des Alkoholgehaltes in der Atemluft |
DE2437352C2 (de) * | 1973-08-03 | 1984-11-22 | Nohmi Bosai Kogyo Co., Ltd., Tokyo | Vorrichtung zum Nachweis von Kohlenmonoxyd |
DE2408218C3 (de) * | 1974-02-21 | 1983-11-03 | Ehlen, Karl Josef, Dr., 5000 Köln | Schaltungsanordnung zum Nachweis von Gasen |
US3879717A (en) * | 1974-06-19 | 1975-04-22 | K F Ind Inc | Portable methane monitor and alarm system |
US3930247A (en) * | 1974-09-06 | 1975-12-30 | Avco Corp | Open screen smoke detector and circuit |
US4001804A (en) * | 1974-11-25 | 1977-01-04 | I-T Safety Enterprises Limited | Ground fault protection for electrical power distribution systems |
US4196427A (en) * | 1976-07-28 | 1980-04-01 | Rudberg Harry I A | Method and apparatus for measuring low concentrations of chlorine and chlorine oxide |
DE2829931C2 (de) * | 1978-07-07 | 1985-11-21 | Auergesellschaft Gmbh, 1000 Berlin | Tragbares Gasmeß- und Warngerät |
CH629905A5 (de) | 1978-07-17 | 1982-05-14 | Cerberus Ag | Gas- und/oder brandmeldeanlage. |
JPS5844936B2 (ja) * | 1979-02-23 | 1983-10-06 | シャープ株式会社 | 調理器 |
US4334258A (en) * | 1980-06-23 | 1982-06-08 | Seeman Jeffrey L | Explosion prevention control system for a fuel-gas burning automatic ignition appliance and associated gas distribution system |
US4767913A (en) * | 1986-05-15 | 1988-08-30 | Amoco Corporation | Automatic gas detector for arc welder |
US5576739A (en) * | 1992-06-18 | 1996-11-19 | Phy-Con. Inc. | Carbon monoxide safety system |
DE202006014672U1 (de) * | 2006-09-23 | 2008-02-14 | Erben Kammerer Kg | Auslöseschaltung für ein elektromagnetisches Stellglied |
US20080198524A1 (en) * | 2007-02-16 | 2008-08-21 | Dometic Corporation | Absorption gas arrestor system |
US7683794B2 (en) * | 2007-05-15 | 2010-03-23 | David Contreras | Carbon monoxide safety system for preventing entry into a dwelling containing toxic gases |
-
1970
- 1970-05-21 US US39354A patent/US3609732A/en not_active Expired - Lifetime
- 1970-05-26 DE DE2025770A patent/DE2025770C3/de not_active Expired
- 1970-05-28 FR FR7019544A patent/FR2050400A1/fr not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7411389A (en) * | 1974-08-27 | 1976-03-02 | Westfaelische Berggewerkschaft | Carbon monoxide detection using semiconductors - with temp variation giving long term stability and methane detection |
Also Published As
Publication number | Publication date |
---|---|
DE2025770B2 (de) | 1978-11-16 |
US3609732A (en) | 1971-09-28 |
DE2025770C3 (de) | 1979-07-26 |
DE2025770A1 (de) | 1970-12-03 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |