Importance

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Abstract

A torque transfer system is provided for transferring torque from an input element such as a flywheel of an internal combustion engine to an output element such as a PTO shaft. The torque transfer system includes the input and output elements and a drive system comprising a drive ring attached to the input element and a drive plate positively or non-positively coupled to the output element. The drive ring transfers torque to the drive plate so as to absorb torsional vibrations which occur during operation of the system, so as to resist abrasion of the drive ring from the drive plate, and so as to resist failure from rotational shock loads imposed on the drive ring by the drive plate. To this end, the drive ring is formed with resilient teeth which, though overlying metal support lugs imparting sufficient rigidity to the teeth to transfer torque to the drive plate, provide the sole contact surface between the drive ring and the drive plate and thus assuredly provide the desired damping and wear resistance under all operating conditions. The resilient teeth and the mating teeth on the drive plate preferably take the form of oversized lugs which are resistant to failure from rotational shock loads.

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First Claim