Sliding bearing
US5632559A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2240/40
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sliding bearing is disclosed with a bearing alloy layer having an annular groove formed around its inner peripheral surface. The bearing alloy layer is sequentially coated with an intermediate layer and an overlay layer, so that upon abrasion, the portions of the overlay layer and the intermediate layer which remain in the recess of the annular groove; as well as the peaks of the bearing alloy layer which are defined between annular grooves, become exposed. In accordance with the invention, the peak has a height h and the intermediate layer has a thickness t, which, when taken on an abscissa and an ordinate, respectively, satisfy the following requirements: (1) 1.ltoreq.h<5, (2) t.ltoreq.2h/3+1/3 and (3) t.ltoreq.3, where h and t are denoted in units of .mu.m. More preferably, the following requirements are satisfied: (4) 1.ltoreq.h<5, and (5) t.ltoreq.h/2. This choice enables an improvement in the initial abrasion resistance, and the seizure resistance and affinity after the overlay layer is abraded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.