Patent ID: 6298792
Filing Date: 2001-10-09
Classification: B60F,B61D

Abstract:
Hi-rail wheel assembly for a road vehicle, said assembly comprising:a frame having first and second ends;an axle;holding means engaging said axle;a pair of railway wheels mounted in spaced relation on said axle;a first pair of spaced apart pivotal links having a cam aperture and a recessed cam shoulder surrounding said cam aperture, said first pair of pivotal links connected between said first end of said frame and said holding means;a second pair of spaced apart pivotal links having a cam aperture and a recessed cam shoulder surrounding said cam aperture, said second pair of pivotal links connected between said second end of said frame and said holding means; anda plurality of cams, each cam having an eccentric aperture and operable to engage said cam aperture and said recessed cam shoulder of each of said pivotal links such that said holding means engages said eccentric aperture;wherein extension of said pivotal links effects a downward lowering of said axle and retraction of said pivotal links effects an upward raising of said axle; andwherein the position of said eccentric aperture within said pivotal links determines the distance between said axle and said frame.