Bicycle crank and pedal structure

Claim 1

An extender for a bicycle crank arm, said crank arm having an opening for receiving a pedal at its distal end, said extender comprising: a tube having an interior opening, the cross-section of which matches in general the cross-section of the bicycle crank arm, wherein the interior opening in said tube is such that said tube is slidable along the longitudinal axis of said bicycle crank arm; a plurality of holes formed through the tube spaced along the longitudinal axis of the tube and perpendicular to the plane of rotation of the bicycle crank arm; means for extending through a selected one of said plurality of holes in said tube and into the opening at the end of the crank arm thereby to attach said tube to said crank arm; said pedal mounted at a distal end of the tube; at least one opening in said tube for receipt of a first set screw, said opening being oriented such that the center line of said first set screw is in the plane of rotation of said crank arm; and an opening for receipt of a second set screw in said tube opposite said opening for said first set screw.