Abstract: A front derailleur for shifting a bicycle chain between chain rings of a bicycle crank set. The front derailleur may include an attachment mechanism for securing the derailleur to a bicycle frame member. The front derailleur may further include a chain guide for enclosing a bicycle chain and contacting the chain during shifting. The front derailleur may further include a six link movement mechanism adjustably affixed to the attachment mechanism and chain guide for selectively moving the chain guide and enclosed bicycle chain during shifting.

Abstract: Embodiments of the present invention include bicycle chain rings for bicycles having specially shaped ramps, tapers and profiled teeth for improved shifting performance. Additional embodiments of the bicycle chain rings of the present invention may be configured with one or more additional features formed within the chain rings including a transition slide, a tapered ramp face, a ramp bridge, a ramp lead, a trailing transition slide and a wear pin.

Abstract: Embodiments of the invention include grip shifters used on bicycles to control shifting of front and rear derailleurs. Embodiments of the grip shifters of the present invention are configured for sufficient shifter cable displacement for use with state-of-the-art linear front derailleurs disclosed in U.S. Pat. Nos. 6,454,671 and 7,025,698 to Wickliffe, the inventor of the present invention.

Abstract: 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.

Abstract: A front derailleur including a chain guide for engagement and disengagement of a bicycle chain with multiple chain rings of a crankset is disclosed. The chain guide may be positioned by linear guide rods. The chain guide may have an inner lifting surface and an outer pulling surface for engaging diametrically opposed corners of a chain when viewed in cross-section.