Patent ID: 7854673
Filing Date: 2010-12-21
Classification: B62M,Y10T

Abstract:
1. A bicycle sprocket assembly comprising: a first sprocket including a first main body with a first inner end portion configured to be attached to a bicycle freewheel and a first outer chain engagement portion, the first sprocket having a first aperture located between the first inner end portion and the first outer chain engagement portion; a second sprocket including a second main body with a second inner end portion configured to be attached to the bicycle freewheel and a second outer chain engagement portion, the second sprocket having a second aperture located between the second inner end portion and the second outer chain engagement portion, each of the first and second apertures having a first section, a second section and a connecting section extending between the first section and the second section, the connecting section having parallel surfaces spaced apart from one another by a first width that is smaller than respective diameters of the first and second sections; a spacer disposed between the first and second sprockets at a radial location adjacent the first and second inner end portions; and at least one reinforcement member having at least two sprocket support portions, each sprocket support portion having a diameter larger than the first width of the connecting sections, the sprocket support portions causing the connecting sections to undergo elastic deformation as the sprocket support portions moves through the connecting portions between the first portions and second sections of the first and second apertures such that the at least one reinforcement member is releasably snap-fitted within the first and second apertures of the first and second sprockets.