Radial piston type hydraulic pump-motor
CA 1075080 A · Owner: Nishiba, Kenzo · Inventors: Nishiba, Kenzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radial piston type hydraulic pump-motor comprises a cylinder block formed with a plurality of radial cylinders circumferentially equally spaced and each opened at its radially outer end; a plurality of piston assemblies each radially slidably accommodated in each of the radial cylinders of the cylinder block to provide a cylinder chamber defined by the radial cylinder and the piston assembly; a plurality of inlet-outlet passages formed in the cylinder block each, having one end opened at said cylinder chamber and the other end opened exteriorly of the cylinder block; a housing accommodating therein the cylinder block and the piston assemblies and having a radially inner face held in …
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 April 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 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.