Sealing ring assembly
US6173968A · kind A · utility
40Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Apr 27, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L17/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing ring assembly for sealing a joint between two members (20, 22). An annular sealing ring 28 abuts an annular backup ring (38, 44) of substantially the same diameter. The annular backup ring is split to permit radial expansion and has a greater thickness on its outer periphery than on its inner periphery. When the joint being sealed (24) is under high pressure, the sealing ring urges the backup ring to expand radially to cover any gap (32) between the members being sealed, maintaining the seal, even under high temperature conditions, and preventing the sealing ring from extruding into the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.