Gate valve assembly
US6837483B2 · kind B2 · utility
4Cited by
3References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jul 10, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/0227
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gate valve assembly includes a valve seat and a valve. The valve seat includes a passage opening and a contacting region surrounding the passage opening. The valve includes a groove located on a marginal region of the valve, and a sealing body positioned in the groove. The passage opening is closed by covering the valve over the valve seat, and an upper surface of the sealing body is tightly contacted with the contacting region. Therefore, the valve is prevented from rubbing against the valve seat and producing particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.