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Continuously variable transmission

  • US 8,900,085 B2
  • Filed: 08/09/2013
  • Issued: 12/02/2014
  • Est. Priority Date: 07/05/2007
  • Status: Active Grant
First Claim
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1. A method for controlling a continuously variable transmission (CVT), wherein the CVT comprises a traction sun and a plurality of traction planets operably coupled to a carrier plate and to the traction sun, the method comprising:

  • providing a skew-based control system comprisinga control reference nut mounted coaxially with a longitudinal axis of the CVT,a feedback cam operably coupled to the control reference nut and to the traction sun, the feedback cam positioned coaxially with the control reference nut, wherein the carrier plate is positioned coaxially with the feedback cam, anda skew cam coupled to the feedback cam and to the carrier plate, the skew cam configured to rotate the carrier plate about the longitudinal axis; and

    operably coupling a neutralizer assembly to the skew-based control system, the neutralizer assembly configured to balance a plurality of axial forces generated in the CVT during operation.

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