Implement for a tractor hitch
AssigneeCNH Industrial America LLC
InventorRoland Huber
Life of this patent
Estimating the term…
Abstract
An implement hitch is disclosed for a tractor having arms for attachment to an implement, wherein the arms have part-spherical sockets at their free ends for receiving coupling balls which during operation receive coupling pins on the implement to be connected by means of the hitch to the tractor. The hitch has lifting arms that are each movable by a respective hydraulic cylinder and are connected to the associated hydraulic cylinder by a linkage that incorporates at least one pivot pin. In the invention, at least one of the pivot pins has a projecting extension dimensioned to fit within the through bore of a coupling ball and a stop is provided on the extension to prevent a coupling ball supported by the pivot pin from sliding off the extension.
Claims9
An implement hitch for coupling an implement to a tractor, the implement hitch comprising:
- a coupling ball defining a bore;
- an arm extending between a first end and a free end opposite the first end, the free end of the arm including a part-spherical socket, the arm defining an arm opening spaced apart from the part-spherical socket in a direction of the tractor;
- a linkage coupled between the arm and a separate component of the tractor, the linkage defining at least one linkage opening aligned with the arm opening;
- a pivot pin extending through the arm opening and the at least one linkage opening to couple the linkage to the arm at a location of the arm opening, the pivot pin including an extended portion extending outwardly from the linkage and the arm, the extended portion being received within the bore of the coupling ball such that the coupling ball is positioned on the pivot pin;
- and
- a retainer configured to be coupled to the pivot pin so as to maintain the coupling ball on the extended portion of the pivot pin.
Dependencies are inferred from the claim text.