Electronic controlled gas valve and method
CA 1294345 C · Owner: Ballard, Gary W. · Inventors: Ballard, Gary W.; Thompson, Kevin D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic controlled gas valve and method are provided for regulating a gas flow rate to maintain a desired gas flow rate under varying operating conditions. A single valve disc opens and closes both the main gas supply seat and the regulator gas supply seat in response to signals provided by a programmable microprocessor control. A manual on-off valve is provided for manually terminating the flow of gas through the gas valve, and includes a meltable manual switch that melts at a predetermined temperature to allow the manual valve to close.
Read the whole patent
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 January 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 14, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.