Valve having improved spool geometry
US9599238B2 · kind B2 · utility
0Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Apr 30, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86461
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spool is disclosed for use in a valve. The spool may have an elongated cylindrical body with a first end and a second end. The spool may also have a first land formed at the first end, a second land axially spaced apart from the first land, and a check element located between the first and second lands. The check element may have an outer diameter that is about 0.5-1% greater than an outer diameter of the second land.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.