Worm-gear assembly having a pin raceway

摘要

A worm-gear assembly including a worm screw ()280 having at least one groove ()280a and a wheel (275) having a plurality of rotatable pins (75a) along its periphery for engaging the worm screw. The pins are able to rotate in a direction other than a direction of wheel rotation. At least one raceway (265) is provided for contacting pins that are not engaged with the worm screw during operation of the assembly.