Metal reinforced seal plate for pilot actuated spool valve
US10288184B2 · kind B2 · utility
1Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2015 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Dec 3, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8663
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Upper and/or lower seal plates of a sub plate mounted, pilot actuated spool valve are reinforced with one or more metal rings. In a number of preferred embodiments, the metal ring is comprised of steel. Portions of the seal plates may comprise an engineering thermoplastic such as polyoxymethylene (POM) sold by E. I. DuPont de Nemours under the DELRIN® trademark. The plastic material may be molded to the metal ring. In other embodiments, the plastic material and metal ring(s) are mechanically connected together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.