Patent attributes
A rear sprocket assembly comprises a first sprocket and a lock device. The lock device includes a first lock member, a second lock member, and a biasing member. The first lock member includes a first axial end and a second axial end. The second lock member includes a third axial end and a fourth axial end. The fourth axial end has at least one radial projection configured to abut against the first sprocket in the axial direction in a mounting state. The biasing member is disposed between the first sprocket and the at least one radial projection in the axial direction in the assembled state to bias the first sprocket and the at least one radial projection in a biasing direction in which the first sprocket and the at least one radial projection are separated from each other.
