Roller chain sprocket for preventing substantially radial impact with chain rollers

摘要

A sprocket is disclosed for use with a roller chain and that substantially avoids radial impact of chain rollers with the sprocket. The sprocket differs from prior sprockets in that the tooth root radius of the sprocket is increased while the sprocket pitch circle diameter is maintained. This configuration creates a clearance between the roller and the tooth root. This clearance allows rollers of a chain of like pitch to impact the sprocket teeth in a substantially tangential fashion on their flanks, rather than substantially radially on the tooth root.