Patent ID: 7036306

Claim:
A one-way clutch comprising: an inner race; an outer race coaxially surrounding the inner race; a plurality of rollers inserted between an outer peripheral surface of the inner race and a plurality of wedge faces formed on the outer race so that the wedge faces are opposed to the outer peripheral surface of the inner race; and springs for biasing the rollers in directions to bite into the corresponding wedge faces, characterized in that the outer race comprises an outer race body surrounding the inner race, and roller-receiving members which have the wedge faces and which are disposed on bottoms of a plurality of recesses formed in an inner periphery of the outer race body and harder than the outer race body, and characterized in that the one-way clutch is in a torque converter provided with a lockup clutch and is formed with an oil passage structure therein which allows communication between the torque converter and one of a hydraulic pressure source and an oil reservoir, and a structure is provided on one of the inner race and the outer race body for determining an axial position of the inner race with respect to the outer race body.