Patent ID: 6290042
Filing Date: 2001-09-18
Classification: F16H

Abstract:
In a torque converter having a driven side including a turbine wheel and a drive side including a converter cover and an impeller wheel, a lockup clutch comprising:an axially displaceable piston rotatably fixed to the driven side of the torque converter and axially displaceable toward the converter housing of the torque converter for transmitting a torque from the drive side to the driven side;a torsional vibration damper having an input part connected to said piston, an output part connected to the turbine wheel of the torque converter, and a torsional damper spring arranged between said input part and said output part so that said input part is rotatable relative to said output part against the urgency of said torsional damper spring; andsaid torsional vibration damper comprising a coverplate connected to the turbine wheel and an axial securing device extending along a circumference of said torsional damper spring and operatively arranged for preventing the axial movement of said torsional damper spring toward said piston,wherein said axial securing device comprises at least one plate that engages around more than one half of the circumference of said torsional damper spring and said axial securing device is installed in said output part of said torsional vibration damper.