Patent attributes
A bicycle sprocket comprises a first sprocket member, a projection, and a bump portion. The first sprocket member is rotatable about a rotational center axis and configured to engage with a bicycle chain. The projection is provided to the first sprocket member and is configured to guide the bicycle chain to engage with the first sprocket member in a first chain-phase state where the bicycle chain is shifted from a second sprocket member to the first sprocket member. The bump portion is provided to the first sprocket member and is configured to guide the bicycle chain away from the first sprocket member in an axial direction parallel to the rotational center axis in a second chain-phase state that is different from the first chain phase state.
