Multipiece spool valve
US4757840A · kind A · utility
4Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Jul 27, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8671
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multipiece control spool of a control valve is hooked together by hooks extending from the end surface of each spool member. At least one hook is provided with central plateaus that extend into beveled areas that allow for axial misalignment between hooked spool members. The end surface of one of the spool members is also provided with a central plateau and a recessed surface extending from the plateau, to further aid in allowing for axial misalignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.