Patent ID: 8677859

Claim:
A bicycle crank axle assembly comprising: a first crank arm including a first axle mounting opening that is through bore; a second crank arm including a second axle mounting opening; and a crank axle including a first end portion, a second end portion and a middle body portion located between the first and second end portions, the first end portion of the crank axle having at least one axially extending first spline that protrudes radially outward from an outer peripheral surface of the middle body portion, the first end portion of the crank axle being disposed in the first axle mounting opening with an interference fit therebetween, the at least one axially extending first spline non-rotatably coupling the crank axle to the first crank arm and preventing outward axial movement of the first crank arm away from the second crank arm along the crank axle, the second end portion of the crank axle having at least one recess that extend radially inward with respect to the outer peripheral surface of the middle body portion to form at least one axially extending second spline, the second end portion of the crank axle being non-rotatably disposed in the second axle mounting opening.