Composite seal and coupling
US8186691B2 · kind B2 · utility
4Cited by
31References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2007 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Oct 28, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L23/167
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal and coupling, wherein the seal has a thin profile including a primary sealing element that provides both a face and radial seal, and a secondary or backup sealing element that provides a face seal. The secondary or backup sealing element seals against leakage past or through the primary sealing element, and the retainer may be made of a fluid impervious material for blocking permeation of fluid from the primary to the secondary seal. The retainer may also function to prevent over-compression of the sealing elements, while also maintaining a radial spacing between the sealing elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.