Hydraulic system with multiple pressure relief levels
US7222484B1 · kind B1 · utility
19Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2006 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Mar 3, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/654
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic system has at least one primary hydraulic functions and a plurality of secondary hydraulic functions all of which are connected in parallel to a supply conduit and a return conduit. A first pressure relief valve prevents pressure in the supply conduit from exceeding a first limit and second pressure relief valve prevents the pressure at the secondary hydraulic functions from exceeding the lower second pressure limit. Novel pressure relief circuits are provided which enable only two pressure relief valves to provide one of two pressure limits at more than two hydraulic functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.