Patent ID: 6769522
Filing Date: 2004-08-03
Classification: F16H,Y10T

Abstract:
A fluid-type torque transmission device comprising:a front cover being fixed to an input shaft, said front cover having, a radial flange part extending in a radial direction, said radial flange part having a sliding contact surface on an axially facing surface thereof, and an axial flange part extending in an axial direction from a radially outside edge of said radial flange part, said radial and axial flange parts being formed integrally as a unitary member, said axial flange part having a connection part at a first axial end connecting to said radial flange part and a welding part at a second axial end, said axial flange part being formed such that a first region containing said welding part has a lower rigidity than a second region containing said connection part, an axial length of said first region containing said welding part being longer than an axial length of said second region containing said connection part; a turbine being connected to an output shaft; a pump impeller being connected by welding to said front cover at said welding part of said axial flange part; and a lockup clutch having a facing part being configured to slide against said radial flange part of said front cover.