Patent ID: 7784378
Filing Date: 2010-08-31
Classification: B62M,Y10T

Abstract:
1. A bicycle crankshaft assembly comprising: a crank axle including an axial axis, a first axle end, and a second axle end axially opposed to said first axle end; a first crank arm connected to said crank axle at a first crank arm interface adjacent said first axle end; a second crank arm connected to said crank axle at a second crank arm interface axially spaced from said first crank arm interface; a first bearing surrounding said crank axle adjacent said first axle end for rotation of said crank axle about said axial axis; a second bearing surrounding said crank axle for rotation of said crank axle about said axial axis, wherein: said second bearing is axially spaced from said first bearing; said first crank arm includes a first crank arm axis and said second crank arm includes a second crank arm axis; said crank axle includes reinforcement fibers for structural reinforcement of said crank axle; and said fiber reinforced crank axle is an integral one-piece crank axle that passes through said first bearing and extends to said second bearing.