Seal assemblies for use with fluid valves
US8820708B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2009 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Nov 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86799
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Seal assemblies for use with fluid valves are described. An example valve trim assembly for use with fluid valves includes a cage and a seal assembly to be positioned in at least one of the cage, a cage retainer or a plug. The seal assembly includes a first seal and a first scraper. The first seal is to provide a load to the first scraper to prevent the ingress of contaminate to a dynamic sealing surface to be engaged by the first seal. Additionally, the seal assembly includes a second seal and a second scraper. The second seal is to provide a load to the second scraper. Further, the seal assembly includes a spacer between the first and second seals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.