Radial hydraulic pump with a variable eccentricity and delivery
US9194380B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2012 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Mar 14, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The disclosure of the present invention describes a hydraulic pump including a frame, a pump shaft capable of being rotated by a thermal or electric motor around an axis which is stationary with respect to the frame, an eccentric sleeve engaged with the pump shaft, at least one stage of pistons arranged to be stationary with respect to the frame and radially extending in pump cylinders defining chambers, and at least one tappet extending in a housing made in the eccentric sleeve and cooperating with at least one resilient means, having a resilience varying according to the load of the downstream circuit emerging at the level of the pump chambers, the tappet actuating means which decrease the piston stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.