Butterfly valve incorporating sleeve seals
US5360030A · kind A · utility
30Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Oct 14, 1993 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Oct 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7036
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An industrial butterfly valve which incorporates a disc valve mounted upon a valve stem, the butterfly valve having a tubular housing, with a gasket lining the interior passageway through the housing, the gasket and tubular housing having apertures provided therethrough for pivotally mounting of the valve stem and its disc element, and a sleeve provided upon the valve stem and lining the gasket apertures to prevent leakage of any fluid material therethrough or from contacting and deteriorating the contiguous gasket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.