Pin and bushing configuration for a track assembly
US6109706A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Nov 17, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D55/21
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In the operation of track-type machines, the pin and bushing assemblies incorporated in the track assemblies are typically lubricated to accommodate wear that occurs as they rotate relative to one another. Since the relative rotation occurs over a relatively small area, there are instances wherein portions of the interface between the pin and bushing never are exposed to the lubricating fluid, thus causing premature wear. The present invention provides a track assembly that has a track bushing that defines a bore that is defined by a plurality of wall segments. The wall segments join one another to define a plurality of cusps that form axially extending channels that extend the axial length of the bushing. The channels maintain a quantity of lubricant during relative rotation of the track pin and bushing to prevent premature wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.