Patent attributes
A bicycle sprocket comprises a sprocket member and an attachment member. The sprocket member comprises a first annular portion, sprocket teeth and a first engaging portion. The first engaging portion is provided on an inner peripheral part of the first annular portion. The attachment member is configured to be bonded to the sprocket member and comprises a second annular portion and a second engaging portion. The second annular portion is provided radially inwardly of the first annular portion. The second engaging portion is configured to engage with the first engaging portion. One of the first engaging portion and the second engaging portion includes a protrusion. The other of the first engaging portion and the second engaging portion includes a groove extending in the circumferential direction. The protrusion is configured to be fitted in the groove.