Patent ID: 7273140

Claim:
A torque converter for a vehicle, comprising: a front cover integrally formed with a boss to which a crank shaft of an engine side is connected, an impeller connected to the front cover to rotate together with the front cover, a turbine disposed facing the impeller, a stator disposed between the impeller and the turbine to convert flow of oil directed from the turbine; a lockup clutch mechanism for directly connecting the engine to the turbine, wherein a blade of the impeller and/or the turbine is provided with inner and outer projections coupled to a shell and a core of the impeller and/or the turbine; and each of the inner and outer projections includes a base located on a slit formed on the shell/core and an extending section extending from the base, the extending section being bent after penetrating the slit; wherein the stator is coupled on an outer circumference of a one-way clutch, further comprising a retainer coupled to the one-way clutch to prevent axial movement of the one-way clutch, the retainer being provided with a groove on which a race of a needle bearing supporting axial load of the impeller and the turbine is located, the retainer being also provided with a hole through which oil is supplied to the one-way clutch, the hole being formed on the oil supplying groove; and wherein the oil supplying groove is provided in the retainer, the oil supplying groove being formed in an arc shape, and the width of the oil supplying groove is gradually reduced as it goes from a center portion to an outer portion.