Patent ID: 7856903

Claim:
A bicycle crank axle adapted to be rotatably supported within a bottom bracket of a bicycle frame for supporting a bicycle crank arm, wherein the crank axle comprises: an axle body having first and second end portions; a plurality of first splines disposed at the first end portion of the axle body; a plurality of second splines disposed at the second end portion of the axle body; and a projection extending radially outwardly from the first end portion of the axle body, wherein the projection is structured to abut against a lateral outer surface of the bicycle crank arm to prevent the bicycle crank arm from moving axially outward; wherein a separate projecting member is mounted to the first end of the axle body to form the projection; wherein the plurality of first splines extend radially outwardly from an outer peripheral surface of the axle body for engaging a splined surface of the bicycle crank arm; and wherein the plurality of second splines do not extend radially outwardly relative to the outer peripheral surface of the axle body.