Pressure stabilizing mechanism and hydraulic pump equipped therewith
US9632515B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2013 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Mar 30, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2516
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to pressure stabilizing mechanism and to a hydraulic pump including the pressure stabilizing mechanism. The pressure stabilizing mechanism comprises a frame, a piston and a first and second seals. The frame defines a piston chamber, a lower-pressure circuit and a higher-pressure inlet. The piston chamber has a first section of smaller circumference and a second section of larger circumference. The first section of the piston chamber connects the lower-pressure circuit and the higher-pressure inlet. The lower-pressure circuit further connects with the second section of the piston chamber. The lower-pressure circuit receives a fluid at a lower pressure and the higher-pressure inlet receives the fluid at a higher pressure. The piston is slidably movable in the piston chamber between an open position and a closed position. The piston slidably moves between the closed and open position upon relative variation between the lower-pressure fluid and larger surface in the second chamber with respect to the higher-pressure fluid and smaller surface in the first chamber of the piston chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.