Patent ID: 8438947

Claim:
A bicycle crank arm comprising: a body member including an inner side surface, an outer side surface and a peripheral surface extending between the inner and outer side surfaces, and a cover member at least partially overlying the peripheral surface of the body member, the body member further including a crank axle attachment portion having a crank axle receiving opening extending from the inner side surface of the body member, a slit extending from the peripheral surface of the body member to the crank axle receiving opening and at least one fastener bore extending transversely through the slit for adjusting the crank axle receiving opening in size, the peripheral surface of the body member having first and second abutments located on opposite sides of the slit, the first and second abutments being arranged relative to the slit such that the first and second abutments move closer together as the crank axle attachment portion is squeezed to decrease the crank axle receiving opening in size, the cover member contacting the first and second abutments and moving with the first and second abutments as the crank axle attachment portion is squeezed to decrease the crank axle receiving opening in size.