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Multi-speed planetary transmission

  • US 10,473,190 B2
  • Filed: 04/10/2017
  • Issued: 11/12/2019
  • Est. Priority Date: 09/28/2016
  • Status: Active Grant
First Claim
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1. A transmission comprising:

  • at least one stationary member;

    an input member rotatable relative to the at least one stationary member;

    a plurality of planetary gearsets operatively coupled to the input member, each of the plurality of planetary gearsets including a first gearset component, a second gearset component, and a third gearset component, the plurality of planetary gearsets including a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset, the input member is fixedly coupled to the first gearset component of the first planetary gearset;

    an output member operatively coupled to the input member through the plurality of planetary gearsets and rotatable relative to the at least one stationary member, the output member is fixedly coupled to the fourth planetary gearset;

    a first interconnector fixedly couples the second gearset component of the first planetary gearset to one of the second planetary gearset and the third planetary gearset;

    a second interconnector fixedly couples the third gearset component of the first planetary gearset to at least one of the second planetary gearset, the third planetary gearset, and the fourth planetary gearset; and

    a plurality of selective couplers, wherein the plurality of selective couplers include a first number of clutches and a second number of brakes, wherein the first number is greater than the second number, wherein the first gearset component of the first planetary gearset is a sun gear.

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