Final drive assembly with seal guard features and machine using same
US8356680B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2010 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | Dec 3, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Y2200/25
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A final drive assembly is used to support a track chain on a track type machine. The final drive assembly includes a sprocket hub mounted for rotation on a fixed hub. A seal is positioned between the fixed hub and the sprocket hub. The fixed hub and the sprocket hub define a seal protection passageway that extends between an outer surface and the seal. The seal protection passageway includes a labyrinth located between an annular attachment flange and the seal along a rotation axis of the sprocket hub. The outer surface includes a valley between a sprocket mount of the sprocket hub and a machine mount of the fixed hub. The seal protection passageway opens at a greater radius than a minimum radius of the valley.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.