Fmc Corporation

Robert M Carter

Robert J Vrba

An axle joint for connecting a removable tread member to the axle of a heavy vehicle. The tread member includes a window which provides ample clearance to loosely receive the end portion of an axle, which window and axle are then pivotally connected together by a pivot pin. A hydraulic cylinder is connected between the axle and the window and continuously applies a turning moment to the axle joint which firmly locks the axle within the window from relative movement in a vertical plane during operation of the vehicle.

Axle joint

A crawler drive system having an endless track is disclosed in which each track sprocket has a double row of teeth and each track shoe has a double row of lugs. The two lugs on each shoe, which lie in different rows, are spaced in the longitudinal direction a greater distance than adjacent teeth of the sprocket so that only one lug of a shoe is engaged by a sprocket tooth at any instant. The two lugs of successive shoes are spaced longitudinally a lesser distance than the pairs of teeth of the sprocket so that only a single lug of a single shoe is engaged by a sprocket tooth at any time.

Growing community of inventors

Cedar Rapids, IA, United States of America

Robert M Carter