Pump assembly
CA 1079121 A · Owner: Trw Inc. · Inventors: Carlson, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved pump assembly includes a pressure plate having inlet and outlet ports for conducting fluid to and from a pumping chamber. The pressure plate includes three layers formed by plate sections having major side surfaces which are bonded together to prevent leakage between the layers. A first one of the plate sections has an outer side surface which is disposed adjacent to the pump rotor. This first plate section is advantageously made of a wear-resistant material to minimize wear upon rotation of the rotor. An intermediate plate section is disposed between the first plate section and a second plate section. The intermediate place section cooperates with at least one of the two outer …
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 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
- 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.