Patent ID: 6923741

Claim:
A top sprocket for a rear sprocket assembly of a bicycle, said top sprocket comprising: a sprocket body having first and second axially facing sides with a center plane arranged therebetween; and a plurality of circumferentially spaced teeth extending radially outwardly from an outer periphery of said sprocket body to form a plurality of circumferentially spaced roots arranged in an alternating arrangement between said teeth, a first tooth of said teeth including a tip portion having a first side surface located on said first side, a second side surface located on said second side and an end surface extending between said first and second side surfaces, and a recessed side surface extending in a peripheral direction on said first side, said recessed side surface being located radially inwardly of said tip portion on said first side, said recessed side surface being arranged and configured to be at least partially axially closer to said second side along a rearward portion of said recessed side surface than a forward portion of said recessed side surface, said teeth being identical to each other and said roots being identical to each other.