Method and apparatus for reducing false alarms in gas warning installations caused by spurious gases
CA 1189351 A · Owner: Cerberus Ag · Inventors: Paglotke, Karlheinz; Bukowiecki, Stanislaw
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
INVENTORS: STANISLAW BUKOWIECKI and KARLHEINZ PAGLOTKE INVENTION: METHOD AND APPARATUS FOR REDUCING FALSE ALARMS IN GAS WARNING INSTALLATIONS CAUSED BY SPURIOUS GASES ABSTRACT OF THE DISCLOSURE, A metal-oxide semiconductor which is heated to, different temperatures is used in conjunction with an elec-, tronic circuit for reducing false alarms caused by spurious gases in gas warning installations and for determining the composition of a gas mixture. The temperature of the metal-oxide semiconductor, after reaching a predetermined value (T), is altered by an amount (.DELTA.T) either towards the positive or negative side or towards both the positive and negative side, respectively. The thus …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
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