Spherical annular seal
US5499825A · kind A · utility
20Cited by
14References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12451
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spherical annular seal having a through hole in a center thereof and a partially convex spherical surface portion on an outer surface thereof, wherein a surface of the partially convex spherical surface portion is formed into a smooth surface in which a lubricating sliding layer of a lubricating composition containing 70 to 90 wt. % of boron nitride and 10 to 30 wt. % of alumina and/or silica and a reinforcing material constituted by a metal wire net covering the lubricating sliding layer and integrated with the lubricating sliding layer are integrated in mixed form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.