Seal arrangement and a method of repairing a seal arrangement
US8408557B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Mar 15, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4973
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The seal arrangement (154) is arranged between the casing portions (50,52) and a fluoropolymer O-ring seal (72) is positioned between the casing portions (50,52). A first protecting member (156) is positioned between the fluoropolymer O-ring seal (72) and the casing portion (50) and the first protecting member (156) consists of a polymer and hydroxyapatite. The first protecting member (156) consists of 50 to 80 wt % polymer and 20 to 50 wt % hydroxyapatite and incidental impurities. The first protecting member (156) is located in an annular groove (70) and is thus arranged between the casing portion (50) and the fluoropolymer O-ring seal (72). The first protecting member (156) is substantially U-shaped in cross-section and the fluoropolymer O-ring seal (72) is positioned between the legs of the U-shaped cross-section first protecting member (156). The first protecting member (156) prevents corrosion of the casing portion (50) by the fluoropolymer O-ring seal (72).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.