Road grader/spreader

• US 20070235202A1
• Filed: 04/05/2006
• Published: 10/11/2007
• Est. Priority Date: 04/05/2006
• Status: Active Grant

• Current Assignee: Myron Mullett
• Original Assignee: Myron Mullett
• Inventors: Mullett, Myron
• Granted Patent: US 7,686,537 B2
• Time in Patent Office: Days
• US Class Current: 172/393
• CPC Class Codes: E02F 3/7618 with the scraper blade adjustable relative to the pivoting arms about a horizontal axis
• CPC Class Codes: E02F 3/8157 Shock absorbers; Supports, e.g. skids, rollers; Devices for compensating wear-and-tear, or the like
• CPC Class Codes: E02F 3/962 Mounting of implements directly on tools already attached to the machine E02F3/404 and E02F3/8152 take precedence

Abstract

A road grader comprising an elongated grader blade adapted to be pushed by a vehicle such as a bulldozer and having mutually parallel side members attached to the lateral ends of the blade perpendicularly to the blade'"'"'s longitudinal axis, each of said side members comprising a pair of spaced apart walls that house a slidable mounting plate on the lower end of which is attached a ground contacting skid. Each slidable mounting plate is separately actuated to move upwardly or downwardly with respect to the side member in which it is housed. Relative upward or downward movement of the side member, with respect to the ground contacting skid, results in lowering or elevating the respective ends of the grader blade with respect to the level of the respective ground contacting skid. Separately adjusting the height of the lateral ends of the grader blade and driving the blade by a pushing vehicle permits the precision depth application of a layer of road material at any desired angle or tilt.

Claims

1. A road grader comprising,

an elongated grader blade having a horizontal longitudinal axis and front and back sides with lateral ends and,

two mutually parallel side members attached to the respective lateral ends of the blade perpendicularly to the 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 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 blade, and

reciprocating means interconnecting each side member with its respective mounting plate for moving the plate up and down within the side member.

2. The assembly of claim 1 and further including a plow plate attached to the forward end of each skid and disposed at an angle to the longitudinal axis of the skid.

3. The assembly of claim 2 and further including stabilizing means interconnecting each side member with its respective reciprocating means.

4. The assembly of claim 1 and further including means attached to the back side of the blade for mounting the grader blade to the front blade of a bulldozer.

5. The assembly of claim 4 where the means for mounting the grader blade includes,

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.