Patent ID: 11858588
Assignee: SHIMANO INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. A rear sprocket assembly configured to be mounted to a rear hub assembly for a human-powered vehicle, the rear sprocket assembly comprising:
a first sprocket being a smallest sprocket in the rear sprocket assembly and including:
a first sprocket body;
a plurality of first sprocket teeth extending radially outwardly from the first sprocket body in a radial direction with respect to a rotational center axis of the rear sprocket assembly; and
a first sprocket opening configured to receive a hub axle of the rear hub assembly in a mounting state where the rear sprocket assembly is mounted to the rear hub assembly, the first sprocket opening having a first radially minimum diameter that is smaller than an outermost diameter of a sprocket support body of the rear hub assembly; and

a lock device configured to fix the rear sprocket assembly to the sprocket support body of the rear hub assembly in the mounting state and including:
an axially inward end having first threads configured to threadedly engage with threads provided to the sprocket support body of the rear hub assembly in the mounting state, the first threads having a first radially maximum thread diameter; and
an axially outward end opposite to the axially inward end in the axial direction and having at least one radial projection configured to abut against the first sprocket in the axial direction in the mounting state, the at least one radial projection having a radially maximum projection diameter,

the first radially minimum diameter of the first sprocket opening being smaller than each of the first radially maximum thread diameter of the first threads and the radially maximum projection diameter of the at least one radial projection, and
the lock device being configured so that the first sprocket is slidable relative to the lock device in the axial direction in the assembled state and before the mounting state.