Endless track chain with rotatable sleeve
US5069509A · kind A · utility
32Cited by
17References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Jun 18, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D55/202
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An endless track chain is provided with a rotatable sleeve that is mounted about the track bushing to provide the track with longer external bushing life. The rotatable sleeve is sealed and lubricated, as is the standard track joint. However, each is separate from the other with its own supply of lubricant. As a consequence, a failure of a seal for the rotatable sleeve has no effect on the track hinge joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.