Sealing device providing the upstream/downstream sealing of a valve
US4593916A · kind A · utility
18Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1985 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Jun 27, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/938
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing device for providing the upstream/downstream sealing of a valve comprising a valving member movable inside the bore of a tubular body and comprising at its periphery a sealing surface coming to bear on a sealing packing mounted in the body at the end of the valving stroke. This sealing packing comprises a dynamic annular sealing element and a coronal metal membrane, whose outer edge portion has flat radial part applied axially against a steep side of a shoulder in the bore of the body, for providing static sealing therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.