Patent ID: 8002096

Claim:
A one-way clutch comprising: an outer race provided at its inner periphery with at least one pocket including a cam surface and having a stepped portion formed on an inner diameter side of an axial end of said outer race; an inner race spaced radially inward from said outer race and coaxially arranged therewith for a relative rotational movement; a roller disposed in said pocket and adapted to transmit torque between said outer race and said inner race when engaged by said cam surface; a cage rotatable relative to said outer race and having a cylindrical portion with a window and a flange portion extending from said cylindrical portion toward an outer diameter direction and fitted in said stepped portion of said outer race, the window having a circumferential window width smaller than a diameter of said roller and adapted to hold said roller; and a spring disposed in said pocket and adapted to bias said roller in an engagement direction with respect to said cam surface, wherein one end of said spring is secured to said outer race and another end of said spring is engaged by said roller, and said one end and said another end are connected to a main body portion of said spring via first and second bent portions, respectively, and said bent portions are provided with interference preventing portions for preventing said bent portions from interfering with said outer race and said roller, respectively, one of said interference preventing portions forming a first clearance between said first bent portion and a circumferential end surface of said pocket of the outer race, and another of said interference preventing portions forming a second clearance between said second bent portion and a circumferential surface of the roller.