Patent ID: 6035989
Filing Date: 2000-03-14
Classification: F16D,F16H

Abstract:
A clutch-actuated piston structure for engaging and releasing a clutch engaging member by hydraulic oil and discharging hydraulic oil through an exhaust port, said clutch-actuated piston structure comprising:a piston member having first and second sides, with said first side being adapted to be disposed adjacent to the clutch engaging member and capable of moving close to and away from the clutch engaging member; anda hydraulic chamber structural member movably coupled relative to said piston member, said second side of said piston member and said hydraulic chamber structural member forming therebetween a first hydraulic chamber for receiving hydraulic oil and a second hydraulic chamber fluidly connected to said first hydraulic chamber via a flow restriction member that permits a limited amount of hydraulic oil to pass therethrough,each of said piston member and said hydraulic chamber members having annular surfaces which are adjacent to each other, said first hydraulic chamber and said second hydraulic chamber being concentrically arranged annular spaces, which are divided by said annular surfaces, andsaid flow restriction member being an annular sealing member disposed between said annular surfaces for restricting flow of hydraulic oil from said first hydraulic chamber to said second hydraulic chamber.