Patent ID: 9463844
Filing Date: 2016-10-11
CPC Classification: B62M

Claim Text:
1. A bicycle sprocket having a rotational center axis, the bicycle sprocket comprising: a sprocket body rotatable about the rotational center axis; and a chain engagement structure including an upshifting facilitation area configured to facilitate upshifting, the chain engagement structure including a plurality of chain-engaging teeth configured to engage with a bicycle chain, the plurality of chain-engaging teeth including at least three upshifting facilitation teeth configured to facilitate upshifting, the at least three upshifting facilitation teeth being adjacent to each other without another tooth between the at least three upshifting facilitation teeth, the upshifting facilitation area including an upshifting recessed portion recessed in an axial direction parallel to the rotational center axis, the at least three upshifting facilitation teeth being provided in a circumferential single area defined by the upshifting recessed portion.