Hydraulic pump or motor
US4075933A · kind A · utility
19Cited by
9References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Jun 4, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/002
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid pressure device comprising a pump or motor having a rotating internal assembly comprising linear pistons and cylinders operated through a "swash" plate to actuate the pistons to provide output pressure. The swash plate is mounted to the drive shaft through a universal connection and the cylinder and piston assemblies are coupled to their component parts through universal swiveling ball and socket connections. Special spring washers are provided for insuring a sliding seal between the internal cylinders and a valving plate, and the valve ports are designed for noise minimization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.