Hydraulic transmission with combination check valve and pressure release valve
US6691512B1 · kind B1 · utility
21Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Apr 28, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0253
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A combination check valve and pressure relief valve is provided for use in regulating the flow of fluid between a first fluid side and a second fluid side in a hydraulic circuit. The combination check valve and pressure relief valve includes a valve plug, a valve guide moveably positioned in relation to the valve plug, a valve stem engaged to the valve guide, a check compression spring attached to the valve stem and positioned between the valve guide and the valve plug, a valve seat carried by the valve stem, and a relief compression spring positioned between the valve seat and the valve guide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.