Check valve for use with high pressure pump
CA 1181286 A · Owner: Sterling Drug Inc. · Inventors: Rubey, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A check valve for use with a high pressure sludge pump in which a valve member such as a ball is movable toward and away from a valve seat in the inlet to the valve housing and which valve has a valve member lift limiter adjustably mounted on the valve body and extending into the path of movement of the valve member for engaging it and limiting movement of the valve member away from the valve seat a, plunger mounted for movement toward and away from the valve seat in the position closest to the valve seat projecting, past the valve member lift limiter toward the valve seat and having the end toward the valve member spaced from the valve member and permitting movement of the plunger away …
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 January 22, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 2002.
- 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.