Spool for a spool valve and method of producing same
US4862920A · kind A · utility
13Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1988 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Jul 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86734
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention provides a spool for a spool valve, the spool (1) comprising at least one annular land (2) having at least one notch (3) therein which is part conical (4). The invention also provides a method of producing such a spool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.