Patent ID: 6976567
Filing Date: 2005-12-20
Classification: F16D

Abstract:
1. A lubrication and cooling structure of a wet-type friction engaging apparatus, wherein a friction disk is fitted by spline with a hub; a mating plate is fitted by spline with a drum; said friction disk and said mating plate are arranged alternately; the engagement of said friction disk and said mating plate results in the transmission of torque; and a plurality of oil bores is provided in said hub to circulate cooling/lubricating oil, characterized in that said hub has an inner surface and an opening end, the inner surface of said hub having a plurality of steps, said steps providing the inner surface of the hub with a stepped taper shape whereby the diameter of said inner surface of the hub increases in steps towards the opening end, and an oil bore of said plurality of oil bores is provided in each said step.