Caterpillar Inc.

Weixue Tian

Zhiyong Hu

Timothy Allen McKinley

Timothy Michael Waters

Qinyang Rao

William Henry Baar, Iii

Valerie Annette Ross

Xuekui Lan

Jim Wu

Timothy A Mckinley

William H Baar Iii

A track pin may comprise a body that includes a generally cylindrical configuration defining an axis of rotation, a circumferential direction and a radial direction, the body defining a first end, a second end and a peripheral surface extending from the first end to the second end. The peripheral surface may include a first lobed portion spaced axially away from the first end and the second end and including a series of convex arcuate segments and concave arcuate segments joined to each other tangentially, forming an undulating surface.

Lobed track pin

A torque converter includes a housing, and an impeller shell disposed within the housing. The impeller shell has a back wall, and a plurality of fins radially arranged and extending outwardly from the back wall. The torque converter further includes a backing hub rigidly coupled to the back wall of the impeller shell. The backing hub has a barrier element extending therefrom. A free end of the barrier element is disposed proximal to the housing to restrict a flow of fluid therebetween.

Torque converter and a method for cooling a clutch assembly of the torque converter

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Dunlap, IL, United States of America

Weixue Tian