Seal arrangement and a method of seal assembly
US7726940B2 · kind B2 · utility
11Cited by
10References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Jul 25, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4994
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Assembly of segmented seals can be problematic in areas of limited space for an introductory tapered mandrel and where there are the problems with damage to the seal surfaces 23, 24. By the present method and arrangement, a seal formed from segments 22 is expanded to an expanded state and then retained at that state by the use of a sacrificial material 26 in the gaps 25 between the segments 22 opened by expansion. The sacrificial material 26 is typically a low melting temperature wax and so is removed when the seal arrangement reaches its operating temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.