Hi-rail wheel assembly for improved traction
US6298792A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Feb 24, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60F2301/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved hi-rail wheel assembly includes a frame connected to an axle tube surrounding an axle, a pair of railway wheels mounted in spaced relation on the axle tube, a first pair of pivotal links connected between a frame and the axle, and a second pair of pivotal links connected to the frame and the axle. The hi-rail wheel assembly is attached to a conventional roadway vehicle such that the extension of said pivotal links effects a downward lowering of the axle and the railway wheels from the frame and lifts the vehicle whereby the vehicle tires engage the railroad track, and the retraction of the pivotal links effects an upward lifting of the axle and railway wheels towards the frame such that the vehicle tires engage a ground surface or roadway. Each pivotal link includes a cam aperture and a recessed cam shoulder surrounding the cam aperture to receive a cam. A cam having an eccentric aperture is used to engage the cam aperture and the recessed shoulder such that the eccentric aperture is connected to the axle. The position of the eccentric aperture with respect to the recessed cam shoulder will thereby determine the distance between the axle and the frame when the hi-rail w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.