US Patent 9677658 Bicycle chain rings

Embodiments of the present invention include bicycle chain rings for bicycles having specially shaped ramps, tapers and profiled teeth for improved shifting performance. The embodiments of bicycle chain rings of the present invention may be configured for large chain rings on double cranksets and large and middle chain rings on triple cranksets. The embodiments of bicycle chain rings of the present invention may also be retrofitted to existing bicycle cranksets by replacing original chain rings. The embodiments of bicycle chain rings of the present invention may further be configured for any standard crankset mounting bolt configuration and for any suitable number of teeth.