Hydraulic pumps
US5032061A · kind A · utility
4Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1988 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Feb 19, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/246
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Hydraulic pump with axial pistons (1) in which each piston (1) forces the hydraulic liquid through a nonreturn valve, said nonreturn valves being connected to a control jack (20) by means of which the nonreturn valves can be made inactive, characterized by the fact that the nonreturn valves are placed in a chamber (10) and consist of a sliding support (15) inside of which there is disposed a spring (17) acting on an organ (16) serving as valve, which slides inside the sliding support (15), the latter being able, at will, to be coupled by any suitable means to the control jack (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.