Valve
CA 1318652 C · Owner: Aktiebolaget Somas Ventiler · Inventors: Hubertson, Folke; Nilsson, Curt Ove
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve with a valve body (11 43) in the form of a ball or of a, segment of a ball has a second concave, spherical sealing surface, (20 53) which is provided to be resiliently urged against a first sealing surface of the valve body, and at least an outer cylindrical, surface (21, 65, 66) which slidingly contacts a cylindrical guiding surface (22, 55, 56) of equal diameter in the central part of the valve housing. A spring washer (17, 82) abuts an end surface (24 73), of the seat ring and is firmly clamped with its peripheral portion between an end surface (27, 81) of the central part of the valve housing and an end surface (28, 62) of an end fitting. The end surface of the seat ring …
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 June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 2010.
- 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.