Bicycle sprocket

Details Bicycle sprocket Bicycle sprocket

2005-12-02

2010-11-02

Siconolfi, Robert A (Department: 3657)

Endless belt power transmission systems or components

Positive drive pulley or guide roll

Having nonmetallic component

C474S152000, C474S160000

Reexamination Certificate

active

07824287

ABSTRACT:
A bicycle sprocket is provided that has a sprocket ring part, a synthetic resin fastening part and at least one attachment part. The synthetic resin fastening part is non-movably coupled to the sprocket ring part at a location radially inwardly of the sprocket teeth relative to the rotation axis. The least one attachment part is at least partially embedded within the synthetic resin fastening part. The attachment part includes a connecting portion and a radial projecting portion extending outwardly from the connecting portion to space the connecting portion radially inward of the sprocket ring part. The attachment part is formed as a separate member from the sprocket ring part and the synthetic resin fastening part. The synthetic resin fastening part facilitates weight saving, while the attachment part prevents the reduction of fastening power (strength) due to deterioration or deformation of the synthetic resin.

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