Patent ID: 7513316
Filing Date: 2009-04-07
Classification: A01B

Abstract:
1. Implement rear hitch leveling structure, comprising; an implement frame having a forward portion and an aft portion and adapted for forward movement over ground; an implement lift rockshaft coupled to the implement frame member for rotation about a transversely extending rockshaft axis to raise and lower the implement frame, the lift rockshaft located between the forward portion and the aft portion of the implement frame; a lever arm fixed to the implement lift rockshaft for rotation therewith; a fore-and-aft extending hitch assembly having a forwardmost end connected to the lever arm fixed to the implement lift rockshaft rearwardly of the forward portion of the frame, the hitch assembly including a hitch beam, and a rear connector supported from the hitch beam behind the implement frame and adapted for connection to a trailing implement behind the aft portion of the implement frame, the forwardmost end of the hitch assembly constrained for movement with the lift rockshaft as lift rockshaft is rotated; and an attitude control link connected between the implement frame and the hitch assembly rearwardly of the lift rockshaft for lowering and raising the hitch connector as the implement frame is raised and lowered, respectively, with rotation of the lift rockshaft.