Direct control variable displacement pump with dual-function high-pressure relief valve- pressure regulating valve
US12398682B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2024 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Feb 29, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C9/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A dual-function high-pressure relief valve pressure regulating valve includes valve sleeve, a spool that slides laterally in a first direction and a second direction, and a piston disposed against the valve sleeve. The valve sleeve includes a PRV inlet window, a PRV outlet window, and a pressure relief outlet window. The spool includes a PRV inlet landing, and a combined PRV/HPRV landing. The piston is configured to slide laterally in the first direction and the second direction based on a pressing force applied by the spool. The dual-function HPRV-PRV operates in a first mode to adjust the spool and maintain opening of the PRV inlet window and the PRV outlet window while closing the pressure relief outlet window, and operates in a second mode to adjust both the spool and the piston to open each of the PRV inlet window, the PRV outlet window, and the pressure relief outlet window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.