Hydraulic accumulator
US7322377B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Feb 22, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2201/3158
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic accumulator includes a piston (3) capable of moving in an accumulator housing (1) in its axial direction and separating a gas side (5) from a liquid side (7) of the accumulator housing (1). Guide elements (9, 17) designed to co-operate with the accumulator housing wall (1), as well as at least one sealing element (15), are arranged at the periphery of the piston. The sealing element is arranged offset in the axial direction relative to the guide elements (9, 17), and is located between the guide elements. In the piston (3), a pressure compensating channel (19) forms, at the piston periphery, a liquid flow path between the liquid side (7) and a space (2) located between the guide element (17) nearest to the liquid side (7) and the sealing element immediately next in the axial direction. A device (25) reducing the cross-section of the passage of the pressure compensating channel (19) is located in it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.