Knee joint assembly
AssigneeDeere & Company
InventorJack Conan Anderson
Life of this patent
Estimating the term…
Abstract
A knee joint assembly for an agricultural implement or a vehicle includes a relatively short knee casting with an apertured end of rectangular cross section which is inserted in a mating steel knee tube. The apertures in the casting end align with beveled apertures in the side walls of the knee tube. Steel pins of length approximately equal to the spacing of the side walls are pressed into the casting through the beveled apertures. Groove welds then secure the steel pins to the knee tube. The casting is relatively small and does not require any welding. Inexpensive ductile iron and common steel tubes can be used for most or all of the assemblies on a machine. The apertured end of the casting includes concave walls to accommodate knee tube concavity and weld flash on the inside of the knee tube.
Claims20
A knee joint assembly including a casting having a support end and a connecting end with at least one casting aperture, a knee tube having an apertured end matingly receiving the connecting end, the connecting end including a tube aperture aligning with the casting aperture, a metal pin extending through the tube aperture and press fitted into the casting aperture, and a weld connecting the metal pin with the knee tube.
A knee joint assembly including a casting having a support end and a connecting end with offset casting apertures, a knee tube having tube apertures and receiving the connecting end, the knee tube including apertures aligning with the casting apertures, pin structure extending through the tube apertures and the casting apertures, and connection structure securing the metal pin to the knee tube.
A knee joint assembly including a support tube, a knee joint having a wheel support and a connecting end, the connecting end received by the support tube and including at least one knee joint aperture, pin structure received by the knee joint aperture and having a friction fit within the knee joint aperture, and connection structure securing the metal pin to the support tube.
Dependencies are inferred from the claim text.