Oil pump pressure relief valve layout
US10240681B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Sep 7, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87845
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressure relief valve includes a valve housing having an inlet end with an inlet opening having a valve seat surface surrounding the inlet opening. The valve housing defines an outlet end with a plurality of outlet holes and a valve chamber disposed between the valve seat and the outlet end. One of the plurality of outlet holes has a smaller cross section than the other outlet holes. The valve chamber includes a plurality of radially protruding grooves extending radially beyond a base diameter. One of the plurality of radially protruding grooves has a groove cross section that is smaller than a groove cross section of the remaining grooves, which along with the smaller outlet hole cause a lateral pressure imbalance on the valve member so that the valve member tends to remain in contact with a side of the valve seat while permitting relief flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.