Patent ID: 6434862
Filing Date: 2002-08-20
Classification: E02F

Abstract:
A power shover comprising:a frame; a boom mounted on the frame; a crowd mechanism mounted on the boom, the mechanism including a crowd pinion having an apex; a dipper handle supported by the crowd mechanism for translational and pivotable movement relative to the boom; and a dipper connected to the handle for movement therewith, the dipper including a generally planar front wall defining a plane and arranged having an upper edge, and a generally planar lip defining a plane and arranged along the upper edge of the front wall, the lip having an upper surface, the plane of the lip forming a lip angle with the plane of the front wall, the lip angle being between three and five degrees, a tooth attached to and extending from the lip, and the plane of the tooth further forming a tooth angle with an imaginary line drawn tangent to the apex of the crowd pinion and intersecting the upper surface of the lip, the tooth angle being between 46 and 50 degrees.