System for hydraulic pressure relief valve operation
US10527068B2 · kind B2 · utility
3Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jan 20, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87169
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic power unit (HPU) configured for use with a pressure relief valve (PRV) having an open port and a close port is provided. The HPU includes a pneumatic primary pump, a hydraulic fluid reservoir, an accumulator, and a two position solenoid directional valve (TPSDV). The hydraulic fluid reservoir is in fluid communication with the primary pump. The TPSDV is in communication with the primary pump, the reservoir, the accumulator. The TPSDV is configured for fluid communication with the PRV. The HPU is configurable in a PRV fail open configuration and a PRV fail close configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.