Patent ID: 8813930

Claim:
A one-way clutch, comprising: a plurality of rollers; a first collar and a second collar that are concentric and rotate relative to each other, the first collar including a plurality of cavities at a number corresponding to the plurality of rollers, each of the plurality of cavities including an inclined bottom surface which includes a lower portion spaced from the second collar at a distance greater than a diameter of each of the plurality of rollers and a higher portion spaced from the second collar at a distance smaller than the diameter of the roller; and a circular holding frame which is located between the first collar and the second collar, and includes a support ring and a holding space formed within the support ring, the support ring including an annular carrying portion, a plurality of slots formed on the carrying portion and corresponding to the cavities to hold the rollers respectively, and an opening running through two sides of the carrying portion to provide the circular holding frame with flexibility, such that the circular holding frame tightly contacts with the second collar and is rotated with the second collar due to a friction force between them, wherein each of the plurality of slots having a width that is substantially the same as a diameter of a corresponding roller.