Bearing seal for universal ball joint
US4893847A · kind A · utility
28Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Jul 5, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/91
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An aircraft engine bleed air ducting system including at least one universal ball joint within said ducting, said joint fitted with an annular bearing seal to seal and reduce the coefficient of friction between moving parts in said joint during angulation of said joint. The annular bearing seal includes a reinforcement wire surrounded by a graphite composition, which composition is in direct contact with parts of said bearing seal and said wire aids in prevention of deformation of said bearing seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.