Patent ID: 6440000
Filing Date: 2002-08-27
Classification: F16D

Abstract:
A universal joint comprising:a pair of thin bending plates; a pair of linking boss portions, each of which supports one of said thin bending plates at two points in the neighborhood of two extremities of a diameter on one-side surface thereof; and an intermediate disk supporting said thin bending plates similarly at two points on each surface in the neighborhood of two extremities of a straight line orthogonal to the diameter; wherein said linking boss portions and said intermediate disk are made of a high duty aluminum alloy for elongation having a high tenacity by die cast and an arbor for caulking protruding from the center of each of supports holding said thin bending plates, which secures directly one of said bending plates, is formed in one body therewith by die casting, the improvement wherein said protruding arbor for caulking is constructed in one body by insert formation using another suitable member at the die cast formation of each of said linking boss portions and said intermediate disk.