Sealing thermostat for vehicle cooling systems
CA 2045229 C · Owner: Fishman, Joseph · Inventors: Fishman, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved sealing thermostat for vehicle cooling systems includes a circular flange having a generally circular opening for the passage of fluid therethrough. A pair of bridges span the opening on opposed sides of the flange. A temperature sensitive valve means includes a gin contacting the underside of one of the bridges at one end and is extendibly housed within the body of the valve at the other end. The body in turn contains the temperature sensitive extender for extending the pin. A valve disc is rigidly attached to the body and seats in the opening in the flange when the pin is retracted relative to the body. A spring acts between the valve disc and the others of the bridges to urge …
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
- Filed June 21, 1991 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2013.
- 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.