Ball valve packing
US7887024B2 · kind B2 · utility
5Cited by
115References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2003 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Jan 17, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0508
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ball valve includes a valve element and a single piece packing that seals the valve element within a valve cavity. The single piece packing is pulled over the valve element at room temperature or may be molded on. The valve element may include a flow control element such as a ball and upper and lower trunnions. The lower trunnion may extend past a lower end of the packing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.