The Timken Company

Carl R Ribaudo

Ryan D Evans

Gary L Doll

Richard Borowski

Randy P Kruse

Geoffrey Bishop

Elizabeth P Cooke

The performance of a worm assembly seal is improved by (1) the use of a hardened steel worm with a bronze worm gear; (2) a tribological coating on one or both of the worm thread or spiral and the gear teeth; 3) a tribological coating on one or both of the input or output shaft or shaft sleeves; or (4) a tribological coating applied to the worm thread, the gear teeth, the input and output shafts or shaft sleeves, or combinations thereof. In each of the approaches, the worm, worm gear, and input and output shafts or shaft sleeves can have surface finishing treatments. Additionally, in each of the three approaches, carbon or carbon/nitrogen concentration gradients can be added to the worm.

Seal for worm gear speed reducer

A process for improving the durability of a differential, where the differential has a pinion shaft and a pinion, the pinion shaft having a surface that contacts the surface of the inner diameter of the pinion. The process comprises bonding to the surface of the pinion shaft or the pinion or both, in the region of the interface between the pinion shaft and pinion, a coating having both a lower coefficient of friction and higher seizure resistance than that of the substance of the pinion shaft when in contact with the substance of the pinion.

Differential with thin film coating at cross shaft and processes for manufacturing the same

A rolling element bearing comprises an inner ring () and an outer ring () each provided with a raceway (), said rings having land regions () on opposite sides of their raceways, and a series of rolling elements () which are in rolling contact with the raceways and which are mutually spaced by a cage (), said cage () engaging the land regions () of said ring, said cage () being coated with a wear and friction reducing coating over its full surface.

Growing community of inventors

Jackson Township, OH, United States of America

Carl R Ribaudo