Patent ID: 8662816
Filing Date: 2014-03-04
Classification: E02F

Abstract:
1. A wheel loader machine, comprising: an end frame; a pair of lift arms having first ends pivotally connected to the end frame by pivot pins A having a common rotational axis and having second ends opposite the first ends; a pair of lift cylinders having first ends pivotally connected to the end frame by pivot pins Y having a common rotational axis and second ends each pivotally connected to a corresponding one of the lift arms by pivot pins K having a common rotational axis, wherein extension of the lift cylinders causes the lift arms to pivot about the pivot pins A and move the second ends of the lift arms upwardly relative to the ground; an implement having a material engaging portion and a coupling portion, where the second ends of the lift arms are pivotally connected to the implement proximate a bottom end of the coupling portion by pivot pins B having a common rotational axis; a tilt lever having a first end and a second end, and being pivotally connected to the lift arms at a point between the first and second ends of the tilt lever by a pivot pin F; a tilt link having a first end pivotally connected to the second end of the tilt lever by a pivot pin D and second end pivotally connected to the implement proximate a top end of the coupling portion by a pivot pin C; and a tilt cylinder having a first end pivotally connected to the first end of the tilt lever by a pivot pin E and a second end pivotally connected to the end frame by a pivot pin G, wherein extension of the tilt cylinder causes the tilt lever and tilt link to rotate the implement about the pivot pins B toward a racked position, wherein a ratio of a distance DE between the pivot pins D and E to a distance EF between the pivot pins E and F is in the range of 2.08-2.21.