Patent ID: 8813864
Filing Date: 2014-08-26
Classification: A01B,E01C,E02F

Abstract:
1. An attachment for A tractor with a movable box blade assembly comprising: a left rear wheel and a right rear wheel, mounted at distal ends of a rear axle; a three-point hitch attached to the tractor, adjacent to and between the left rear wheel and the right rear wheel; a box blade assembly attached to the three-point hitch; a left horizontal support with a proximal end operatively connected to the rear axle adjacent the left rear wheel; a left trailing wheel supporting a distal end of the left horizontal support, distal from the proximal end of the left horizontal support; a left extendable support shaft interconnecting the box blade assembly to the left horizontal support between the proximal end and the distal end of the left horizontal support; a left horizontal actuator that extends and retracts the left extendable support shaft to move the left horizontal support relative to the box blade assembly, wherein the left horizontal actuator allows the left trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly to the left from the box blade assembly; a right horizontal support with a proximal end operatively connected to the rear axle adjacent the right rear wheel; a right trailing wheel supporting a distal end of the right horizontal support, distal from the proximal end of the right horizontal support; a right extendable support shaft interconnecting the box blade assembly to the right horizontal support between the proximal end and the distal end of the right horizontal support; a right horizontal actuator that extends and retracts the right extendable support shaft to move the right horizontal support relative to the box blade assembly, wherein the right horizontal actuator allows the right trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly to the right from the box blade assembly.