Fluid flow governing valve means
CA 1092585 A · Owner: Joelson, Karl E. · Inventors: Joelson, Karl E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides an electric circuit for governing a fluid flow governing valve including a housing enclosing a movable main valve member, a conduit for supplying pressure fluid to move said main valve member, a control valve in said conduit and having a valve body for controlling the flow of pressure fluid acting upon said main valve member. The circuit comprises: an electric resistance wire having heat expansion properties and connected to said control valve body so its, thermal movements will determine the position thereof; a source for supplying electric current to said resistance wire at an intensity whch would be higher than acceptable therefor during an extended exposure; a …
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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 December 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 1997.
- 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.