Patent ID: 8925948
Filing Date: 2015-01-06
Classification: B62K,B62M,Y10T

Abstract:
1. A bicycle bottom bracket assembly comprising: a shaft having an longitudinal axis (X-X) extending between the shaft's end portions; a left crank arm associated with a first end portion of said shaft; a right crank arm associated with a second end portion of said shaft; and, a through-cavity that extends unobstructed along said longitudinal axis through the crank arms and said shaft, wherein said first end portion of said shaft comprises a grooved outer surface and said left crank arm comprises a through hole which is at least partially grooved for the sliding coupling with said grooved outer surface, wherein said first end portion of said shaft comprises, in an axially outermost position with respect to said grooved outer surface, an external threading, said bottom bracket assembly further comprising an internally threaded ring nut screwed onto said external threading and in axial abutment onto said left crank arm.