Piston pump
US4484866A · kind A · utility
3Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1983 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Jun 2, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/166
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston pump includes a cylinder with a bore receiving the piston. The piston forms a central passage leading to a variable volume chamber and a check valve is disposed in the central passage. In addition, the cylinder includes a pair of ports which selectively communicate with the variable volume chamber. The pair of ports and the central passage communicate a reservoir with the variable volume chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.