Bonded elastomer seal valve assembly
CA 2283348 A1 · Owner: Farnham, Gilbert Roland · Inventors: Farnham, Gilbert Roland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve for regulating a flow of pressurized gas in a torch includes a valve body having a central bore and a connected outlet bore. A valve needle (60) is disposed in the central bore and has an end face (72) facing a valve seat (32) formed in a portion of the central bore. A bonded elastomer seal (90) is loosely disposed between the end face and the valve seat. The valve needle is movable to a closed position wherein the end face compresses the elastomer seal on the valve seat to close the central bore from the outlet bore.
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 May 14, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2020.
- 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.