Bogie-wheel shaft lubrication system
US4052111A · kind A · utility
Inventor
Key dates
| Filing date | Nov 20, 1975 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Nov 20, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D55/108
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a suspension system assembly for the resiliently biased rolling support of an endless track on a vehicle chassis, a trailing frame assembly is provided for pivotally supporting wheels mounted for rotation one behind the other in a longitudinal direction of the chassis. The wheels are resiliently urged downwardly and forwardly with respect to the vehicle against the inner surface of an endless track of a vehicle, such as a snowmobile. The system comprises a trailing frame assembly including a tubular sleeve that is pivotally attached to the vehicle chassis by means of a cylindrically shaped bearing shaft that has axial passages extending from grease fittings at the opposite bolt mounting ends of the shaft inwardly for communication with diametrically extending passages opening to the outer surface of the shaft for communicating grease for lubrication of the interface between the outer surface of the shaft and the inner surface of the tubular sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.