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Ball type CVT with output coupled powerpaths

  • US 9,599,204 B2
  • Filed: 09/03/2013
  • Issued: 03/21/2017
  • Est. Priority Date: 09/07/2012
  • Status: Active Grant
First Claim
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1. An apparatus for power transmission comprising:

  • a power input shaft;

    an input planetary gear set engaged with the power input shaft;

    a ball type variator comprising an input ring and an output ring engaged with the input gear set,an output planetary gear set engaged with the variator, andtwo clutches and one brake for switching between a plurality of operational modes of the power transmission apparatus,wherein the apparatus is configured to split torque between a plurality of torque paths,wherein the variator comprises a torsional continuously variable transmission (CVT),wherein the input planetary gear set comprises a set of input planet gears, an input sun engaged with the input planet gears and with the input ring of the variator, an input carrier engaged with the input planet gears and with the power input shaft, and an input ring gear engaged with the input planet gears, andwherein the output planetary gear set comprises a set of output planet gears, an output sun gear engaged with the power input shaft and with the output planet gears, an output carrier engaged with the output planet gears and with a gear box for outputting power from the apparatus, and an output ring gear engaged with the output planet gears and with the output ring of the variator.

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