Patent ID: 6267213
Filing Date: 2001-07-31
Classification: F16H

Abstract:
A lock-up damper arranged in a lock-up mechanism of a torque converter for mechanically transmitting torque from an rotatable input body to a rotatable output body, said lock-up damper comprising:an input member adapted to receive torque from the rotatable input body;an output member adapted to output torque to the rotatable output body from said input member; andelastic members operatively coupled between-said input member and said output member to dampen vibrations, said input member and said output member both including a plurality of receiving openings with said elastic members disposed therein, andat least one of said input and output members having circumferentially extending outer notched sections, each of said notched sections located in an area circumferentially aligned with said receiving openings, and cutouts located in an area radially outwardly of said receiving openings and radially inwardly of said notched sections to reduce weight and centrifuigal force such that an increase in a maximum principal stress is minimized.