Piston and slipper arrangement for hydraulic pump or motor
US3986439A · kind A · utility
21Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1974 |
| Grant date | Oct 19, 1976 |
| Priority date | — |
| Expiry date | Nov 25, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15D1/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston and slipper arrangement for a hydraulic pump or motor includes a tortuous fluid flow passage through the piston to a fluid pressure recess in the thrust face of the slipper at the opposite end of the piston. The fluid passage is formed by a plurality of spaced, cylindrical pockets interconnected by restricted flow channels which tangentially join the pockets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.