1969-02-01

The Tri-Pot Universal Joint 690257

The Tri-Pot universal joint, a tri-axial variant of the conventional ball and trunnion joint, satisfies design requirements of the Toronado inboard drive axle. While the conventional pot joint may meet basic requirements, its nonconstant velocity produces vibrations under heavy torque. By evaluating the Tri-Pot joint’s statics and kinematics, its constant velocity can be justified. Having three equally spaced drive elements, the Tri-Pot joint offers rotational motion at constant angular velocity. Friction is translated into a cyclic axial force along the spider and axle shaft axis. Thus, the Tri-Pot joint satisfies both the angular and axial travel requirements for the inboard drive axle joint.

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