Pressure reducing valve
US9810327B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 23, 2015 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M8/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A valve element of a pressure reducing valve includes a taper portion seated on an inner periphery of a valve hole that includes a first area, a second area and a third area in order from an upstream side. The first area is provided such that, when the valve element is open, the height of a passage defined between the first area and the taper portion gradually reduces toward a downstream side. The second area is provided such that the height of a passage defined between the second area and the taper portion is constant when the valve element is open and the entire second area contacts the taper portion when the valve element is closed. The third area is provided such that, when the valve element is open, the height of a passage defined between the third area and the taper portion gradually increases toward the downstream side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.