Crank assembly for a bicycle

A crank assembly for a bicycle uses a plurality of auxiliary sprockets and chains to achieve high ratios of wheel speed to pedal-rotation speed. The compact crank assembly is especially well suited for use on full-suspension bicycles, as high gear ratios are attained without altering the normal size...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GALASSO, MARIO M, D'ALUISIO, CHRISTOPHER P, HUMPHRIES, JR., ROBERT H
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CYCLE AXLE SUSPENSIONS CYCLE FRAMES CYCLE SIDE-CARS, FORECARS, OR THE LIKE CYCLE STEERING DEVICES CYCLES ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS POWERED PROPULSION OF SLEDGES OR RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FORCYCLES THERMAL INSULATION IN GENERAL TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A crank assembly for a bicycle uses a plurality of auxiliary sprockets and chains to achieve high ratios of wheel speed to pedal-rotation speed. The compact crank assembly is especially well suited for use on full-suspension bicycles, as high gear ratios are attained without altering the normal size and layout of the main sprocket and drive chain of the bicycle. The auxiliary sprockets may be coupled by a simple axle or, alternatively, may be coupled by a rider-adjustable transmission to provide greater control over the gear ratio of the crank assembly.