Universal joint bearing insert formed from ceramic or composite materials
US6520859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S464/903
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A universal joint includes a cross member having a plurality of trunnions extending outwardly therefrom. A hollow bearing cup is disposed about the end of each of the trunnions. Each of the bearing cups has an open end, a closed end, and an inner surface that is disposed about a bearing surface formed on the trunnion. An insert is disposed between the bearing surface of the trunnion and the inner surface of the bearing cup provided thereon. In a first embodiment, an annular groove is formed in the inner surface of the bearing cup that receives the insert therein. In a second embodiment, the insert is disposed between the cylindrical bearing surface of the trunnion and the cylindrical inner surface of the bearing cup. The insert is formed from either a ceramic material or a composite material. The bearing cup may be formed from a metallic material that is molded about the insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.