Seal arrangement for hydraulic pump
CA 1134876 A · Owner: Fletcher Sutcliffe Wild Limited · Inventors: Foster, Malcom C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reciprocable piston hydraulic pump is provided with a piston periphery sealing means comprising at the pres-, sure side, a first seal of flexible material and adapted to surround the piston periphery, a ring separating the first seal from a moulded pressure seal, with a reservoir defined between the first seal and the pressure seal and spring means operable on the first seal to urge the latter towards the pressure seal.
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 November 2, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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.