The Timken Company

Curt Orkin

Xiaolan Ai

Matthew G Wilmer

Randy P Kruse

Ryan Forbes

Neil Chiavaroli

Bradley Smith

A high ratio epicyclic gear train (A) with improved load carrying capability for transmitting power from a driven input shaft, such as may be driven by a turbine engine or engines, to a output shaft, as may be coupled to a rotor of a rotary wing aircraft. The compound epicyclic gear train incorporates a load sharing mechanism consisting of a drive sun gear (), an idler sun gear (), a ring gear (), a set of drive planet gear assemblies (), a set of idler planet gear assemblies (), and a planet carrier assembly () coupled to provide at least two power pathways through said epicyclic gear train (A) between said driven input shaft and said output shaft to provide an improved overall power density of the transmission.

Epicyclical gear transmission with improved load carrying capability

A method for use with a transmission system (A, A, B) incorporating a split gear assembly () for splitting an applied input load between two or more reaction gears () or pathways to selectively positioning a support bearing () to achieve an optimized load distribution (LRT) among a set of drive planet pinions () and idler planet pinions () in the transmission system.

Gear transmission load sharing mechanism

A method and apparatus for a transmission system selectively positioning sets of planet gear support bearings () to achieve an optimized load distribution among a set of drive planet pinions () and a set of idler planet pinions () disposed in engagement between two reaction gears () in the transmission system (A, A), for splitting an applied load between at least two pathways between an input and an output.

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West Hartford, CT, United States of America

Curt Orkin