Multi-speed planetary transmission

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9869377
SERIAL NO

15483005

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Abstract

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A multi-speed transmission including a plurality of planetary gearsets and a plurality of selective couplers to achieve at least nine forward speed ratios is disclosed. The plurality of planetary gearsets may include a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset. The plurality of selective couplers may include a number of clutches and a number of brakes. The multi-speed transmission may have four planetary gearsets and six selective couplers. The six selective couplers may include three clutches and three brakes.

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Patent Owner(s)

Patent OwnerAddress
ALLISON TRANSMISSION INCONE ALLISON WAY INDIANAPOLIS IN 46222

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Burchett, Douglas S Camby, US 9 134
Richardson, Michael J E Indianapolis, US 5 69

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