Self-contained anti-blowout seal for fluids or gases
US6641141B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2002 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Apr 18, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2266
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A self contained anti-blowout seal includes a seal jacket having a static seal surface and a dynamic seal lip with a cavity therebetween. A retaining ring is provided and disposed, in part, within a cavity of the seal jacket and proximate the static seal surface for pressing the static seal surface against a mounting surface. The retaining ring includes a surface extending outside the cavity for bearing against a mounting surface and a depending portion is provided which extends over the cavity opening and includes at least one port communicating with the cavity for enabling a sealing medium to enter and exit the cavity as the seal is pressure energized. A biasing element is provided and disposed in the cavity for forcing the dynamic seal lip against a moving member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.