Patent ID: 9016169
Filing Date: 2015-04-28
Classification: B62M,Y10T

Abstract:
1. A bicycle sprocket comprising: an external peripheral edge part having a plurality of metal sprocket teeth; and an internal peripheral edge part positioned radially inward of the external peripheral edge part and integrally formed as a one-piece unit with the external peripheral edge part, the internal peripheral edge part having at least one recess that extends radially outward from an inner edge of the internal peripheral edge part toward the external peripheral edge part and opens in a radially inward direction toward a rotational center of the bicycle sprocket, the at least one recess extending in a circumferential direction of the bicycle sprocket along a majority of the internal peripheral edge part, the at least one recess having a first axially facing surface and a second axially facing surface, the first and second axially facing surfaces facing toward each other along an axial direction of the bicycle sprocket.