Rotary shear injector valve with coated stator surface
US8919371B2 · kind B2 · utility
3Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2010 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | May 30, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A valve includes a rotor and a stator. The rotor and the stator each have seal surfaces for contacting and sliding against one another during operation of the valve. Either or both of the rotor and the stator have a seal-surface coating formed by depositing an at least partially amorphous interlayer on a substrate and depositing a surface layer, including diamond-like carbon, on the interlayer. The surface layer requires no mechanical polishing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.