Patent ID: 8096908
Filing Date: 2012-01-17
Classification: B62M

Abstract:
1. A bicycle rear wheel sprocket comprising: a sprocket body having a first side surface and a second side surface; a plurality of sprocket teeth extending radially outwardly from a root portion of the sprocket body; wherein a root portion side surface of the root portion defines a root portion plane at the first side surface of the sprocket body; a shift assist recess formed in the root portion below a first sprocket tooth at the first side surface of the sprocket body; wherein a second sprocket tooth has a projecting portion that extends laterally outwardly from the root portion plane at the first side surface of the sprocket body; wherein the projecting portion is formed by a top edge of the second sprocket tooth; wherein a first uppermost top edge of the second sprocket tooth at the first side surface of the sprocket body is inclined relative to the root portion plane when viewed from the top of the second sprocket tooth; and wherein the projecting portion forms an abutment for abutting against a forward edge of an outer link plate of a chain that faces in a rotational direction of the sprocket.