Check valve seal assembly
US6783337B2 · kind B2 · utility
6Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Jan 1, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7613
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A check valve assembly includes a plug having a first end and a second end spaced along a longitudinal axis of the check valve assembly. The check valve assembly also includes a first valve seat, wherein the first end of the plug sealingly contacts the first valve seat. A second valve seat is spaced from the first valve seat in a direction of the longitudinal axis. The check valve assembly further includes a resilient member between the plug and the second valve seat and a spring member urging the resilient member into sealing contact with the second valve seat and the plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.