Ball valve
US5037065A · kind A · utility
12Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1990 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Sep 21, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K41/106
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing system in a ball valve is designed with a bellows which carries a sliding packing ring on the side of the valve housing and presses against a sliding packing ring on the side of the pivot shaft. The bellows is protected by a guard ring. The ball valve has a shaft coupled to a cap through a releasable locking device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.