US 12,228,194 B2
Multi-speed planetary transmission
Nayan Patel, Avon, IN (US); Jerry Suiter, Indianapolis, IN (US); and Conrad Rockey, Indianapolis, IN (US)
Assigned to Allison Transmission, Inc., Indianapolis, IN (US)
Filed by Allison Transmission, Inc., Indianapolis, IN (US)
Filed on May 1, 2023, as Appl. No. 18/141,803.
Application 18/141,803 is a continuation of application No. 17/766,835, granted, now 11,674,565, previously published as PCT/US2020/054235, filed on Oct. 5, 2020.
Claims priority of provisional application 62/911,580, filed on Oct. 7, 2019.
Prior Publication US 2023/0265913 A1, Aug. 24, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16H 3/66 (2006.01)
CPC F16H 3/66 (2013.01) [F16H 2200/006 (2013.01); F16H 2200/2012 (2013.01); F16H 2200/2046 (2013.01)] 22 Claims
OG exemplary drawing
 
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 third gearset component of the first planetary gearset, the third gearset component of each of the plurality of planetary gearsets being a ring gear;
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 both the third planetary gearset and the third gearset component of the fourth planetary gearset;
a plurality of interconnectors which fixedly couple the first planetary gearset to both the second planetary gearset and the third planetary gearset and which fixedly couple the fourth planetary gearset to the second planetary gearset; and
a plurality of selective couplers operatively coupled to the plurality of planetary gearsets, each of the plurality of selective couplers having an engaged configuration and a disengaged configuration, the plurality of selective couplers including a first number of clutches and a second number of brakes.