Patent ID: 6350201
Filing Date: 2002-02-26
Classification: F16D,Y10S,Y10T

Abstract:
A universal joint comprising:a first joint yoke having a first base portion and two first yoke arms projecting from said base, each first yoke arm includes a first bearing bore, said two first bearing bores are arranged on a common first bore axis, a first longitudinal axis intersects the first bore axis at a right angle; a second joint yoke made of steel having a second base portion and two second yoke arms projecting from said second base, each said second yoke arm including a second bearing bore, said two second bearing bores are arranged on a common second bore axis, a second longitudinal axis intersecting said second bore axis at a right angle, said two second yoke arms being separated in the region of their respective second bearing bore forming yoke arm portions connected to the respective second base portion, as well as respective separate bridge portions, a parting line between said bridge portions and said yoke arm portions, fracture faces on said parting line formed during separating of said bridge portions and said yoke arm portions, said fracture faces contacting one another, said bridge portions and yoke arm portions connected to one another by bolts passing through said fracture faces, and said second yoke arms, along the length of the second bearing bores in each of two diametrically arranged linear regions, being subjected to a heat treatment and/or separating speed leading to said fracture faces having a surface structure which corresponds to a brittle fracture; and a cross member with four journals of which two are received in the first bearing bores, said journals including rolling contact members and bearing bushings, and with the other two journals being received in the two second bearing bores, said journals including rolling contact members and bearing bushing.