Bicycle bottom bracket

Abstract

A crankset is provided with a spindle rotatably disposed through a bottom bracket shell; two pedal cranks each including a bifurcation at one end and a through hole formed through one arm of the bifurcation; and two compression collars each including a lengthwise slit, two yoke arms each projecting out of the compression collar, a through aperture through one end of one yoke arm, and a threaded hole through one end of the other yoke arm. The through aperture is aligned with the threaded hole. Each compression collar is complimentarily engaged with the bifurcation. Either end of the spindle anchored in the compression collar. Either fastener is driven into either end of the spindle to fasten the compression collar and the spindle together. Either bolt is driven through the through hole and the through aperture into the threaded hole to fasten the pedal crank and the compression collar together.

1 . A crankset comprising:
 a spindle rotatably disposed through a bottom bracket shell;   two pedal cranks each including a bifurcation at one end and a through hole formed through one arm of the bifurcation; and   two compression collars each including a lengthwise slit, two opposite yoke arms each projecting out of the compression collar, a through aperture formed through one yoke arm, and a threaded hole formed through the other yoke arm, the threaded hole being aligned with the through aperture;   wherein each of the compression collars is complimentarily engaged with the bifurcation of the pedal crank;   wherein either end the spindle is releasably fastened in the compression collar; and   wherein two threaded fasteners each are driven through the through hole of the bifurcation and the through aperture of the compression collar into the threaded hole of the compression collar to fasten the pedal crank and the compression collar together.