Power transmission with lubrication feed circuit

摘要

A power transmission has a high pressure fluid feed for supplying fluid pressure to the control chamber of a movable sheave. The high pressure fluid is supplied through a tube supported for relative rotation in a pair of spaced bushings. One bushing has radial passages for communicating the high pressure fluid from the tube to the chamber and axial passages on the outer periphery circumferentially spaced from the radial passages. The other bushing has uninterrupted inner and outer sealing surfaces. The space between the bushings receives leakage fluid escaping passed the outer surface of the tube and the inner surface of one bushing. This leakage fluid is redirected, at least partially, by the axial passages to a lubrication passage in the transmission.