Threaded connection
CA 1054591 A · Owner: B.C. Richards And Co. Pty. Ltd. · Inventors: Richards, Cecil G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ball valve has a body with opposed coaxial inlet and outlet passages leading to and from a ball chamber containing an apertured ball which may be turned by a handle to open or close the way between the inlet and outlet passages a pair of sealing rings at the inner ends of the inlet and outlet passages bearing against the ball, the inlet sealing ring being backed by a fixed annular flange, the outlet sealing ring being backed by an annular insert screwed into the inner end of the outlet passage to press the sealing rings firmly against the ball. The inlet and outlet passages have tapered threads but, the inner part of the outlet passage in which the insert is screwed has a cylindrical …
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 May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
- 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.