Butterfly valve for controlling high-temperature fluid
CA 1291101 C · Owner: Tsuchimoto, Yoshihiro · Inventors: Tsuchimoto, Yoshihiro; Takesa, Kazuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A butterfly valve for controlling high-temperature fluid including a ceramic valve is disclosed. The butterfly valve exhibits excellent high-temperature sealing and heat insulating characteristics and strength sufficient to rigid support the valve disc therein. The valve comprises a valve stem and a valve disc integrally formed of ceramics and is housed in a casing through a valve guide opening and the valve guide opening is closed with a plug through which the valve stem is inserted.
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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.