Patent attributes
An oil supply system for a transmission includes a transmission casing; a transmission shaft disposed in the transmission casing; a plurality of gears relatively rotatably fitted on the transmission shaft; an oil passage axially formed in the transmission shaft; a trough portion formed on an inside wall of the transmission casing so as to receive oil splashed from the gears; and a connection passage formed in a side wall of the transmission casing and extending downwardly from the trough portion to the oil passage. The oil passage is opened at outer peripheral portions of the transmission shaft adjacent to the gears, and opened at one axial end of the transmission shaft. The trough portion is disposed above the transmission shaft and is extended axially along the transmission shaft.
