Rotation shaft seal
US7722052B2 · kind B2 · utility
4Cited by
22References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | May 27, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3228
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotation shaft seal to prevent inner leak from increasing along high-pressurization of sealed gas. A staged portion is formed on an outer case, and an end face on an inner side of the staged portion is covered with rubber to form a ring rubber portion of which end face is covered. A rubber end face of the rubber portion and a face on a peripheral edge of a seal element are pressed to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.