Patent ID: 8205899
Filing Date: 2012-06-26
Classification: A01D,B60B,B60Y,B62D

Abstract:
1. An extendible axle member ( 146 , 148 ) for an agricultural harvester ( 100 ), the harvester having a chassis ( 107 ) supported on two driven front wheels ( 120 ) and two driven and steerable rear wheels ( 124 ), the rear wheels ( 124 ) being supported on a rear axle assembly ( 128 ) that includes a central axle member ( 136 ) supported to pivot about a horizontal and longitudinally extending axis ( 138 ), the central axle member ( 136 ) including left side and right side outer axle members ( 142 , 144 ), the extendible axle member ( 146 , 148 ) comprising: an elongate telescopic portion ( a C-frame ( wherein the C-frame ( wherein the elongate telescopic portion is generally rectangular in shape, the rectangle being defined by a vertically oriented front wall, a vertically oriented rear wall, a horizontally oriented top wall and a horizontally oriented bottom wall, and wherein each of the plurality of bearing surfaces is disposed at respective corners of the elongate telescopic portion and said each of the plurality of bearing surfaces is spaced apart from the other bearing surfaces of the plurality of bearing surfaces, and further wherein diagonally opposed bearing surfaces of said plurality of bearing surfaces are disposed with respect to each other such that lines of action of the forces acting on said diagonally opposed surfaces are offset from each other.