Patent ID: 7686537

Claim:
A road grader mounted to a bulldozer blade and being pushed by a bulldozer comprising: the bulldozer having the bulldozer blade, an elongated grader blade having a horizontal longitudinal axis and front and back sides with lateral ends, the elongated grader blade mounted to the bulldozer blade, wherein the elongated grader blade is pushed by the bulldozer, two mutually parallel side members attached to the respective lateral ends of the grader blade perpendicularly to the grader blade's longitudinal axis, each of said side members comprising a pair of spaced apart walls, a mounting plate having a lower edge and being slidably disposed between the spaced apart walls in each side member, ground contacting skids riding on a base grade each having forward and rear ends and a longitudinal axis, said skids attached respectively to the lower edges of the mounting plates where the longitudinal axis of each skid is perpendicularly oriented to the longitudinal axis of the grader blade, reciprocating means interconnecting each side member with its respective mounting plate ground contacting skid for moving the mounting plate and skid up and down within the side member, at least two rearwardly extending brackets disposed on the back side of the grader blade for supporting the bulldozer blade, and at least one adjustable length pressure rod extending rearwardly from the back side of the grader blade in contact with a front surface of the bulldozer blade thereby defining a pitch of the grader blade.