Ball valve with seat loading mechanism
CA 1266038 C · Owner: Shelton, William S. · Inventors: Stone, Ralph S.; Shelton, William S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A top-entry ball valve 10 comprising a valve body 12 having a valve chamber 13 and fluid flow passages 14, 15, a ball valve element 20 rotatably mounted in the chamber for movement between open and closed positions relative to the flow passages. and a pair of valve seat assemblies 50 disposed in seat pockets 35 formed about the flow passages at opposed sides of the ball and which may be readily loaded for sealing engagement with the ball or readily disengaged therefrom. Each seat assembly 50 comprises a seat ring 51 having a reduced diameter rear portion 51a an, enlarged diameter portion 51b and a radial shoulder 51c formed at the junction of the two portions and an annular sealing element …
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 February 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 2007.
- 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.