Seal assembly for use in harsh environments
US9464719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2012 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Dec 9, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49249
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing assembly, for example a piston ring, for use in harsh environments, e.g., high radiation levels. The piston ring has an annular sealing surface which together with a member forming a radially outer annular cylinder surface, e.g., a cylinder, forms a seal pocket. Received in the seal pocket is an annular seal comprised of a plurality of wraps of at least one strand of a substantially incompressible and inelastic material such as graphite fiber. The assembly further includes a compression ring and compression assembly which compresses the seal body between the support surface and the compression ring to displace the seal body into sealing engagement with the radially inner and outer sealing surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.