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Infinitely variable traction roller transmission

  • US 4,086,820 A
  • Filed: 06/25/1976
  • Issued: 05/02/1978
  • Est. Priority Date: 06/25/1976
  • Status: Expired due to Term
First Claim
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1. In combination with an infinitely variable traction roller transmission device comprising:

  • coaxial input and output shafts oppositely disposed toric elements, one being supported by each of said shafts for rotation therewith;

    at least two motion transmitting rollers disposed between said toric elements in radial symmetry with respect to the axis of the input and output shafts; and

    means for forcing said toric elements toward each other to cause frictional engagement of the motion transmitting rollers with the opposed surfaces of the toric elements;

    a support structure for each of said rollers, each of said support structures including a pivot shaft having a pivot axis normal to a plane which includes the axis of the input and output shafts, restraining means interconnecting said pivot shafts and limiting independent pivoting of said pivot shafts, and resilient means associated with said restraining means for resiliently forcing said pivot shafts into the proper angular positions relative to each other.

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