A variable transmission gearing system for a bicycle includes a mainboard driven by a chain gear, a plurality of cone gears rotatable on a plurality of shafts fixed on the mainboard respectively, and a sun gear rotatable with an input shaft of a wheel. Also disclosed is a variable transmission gearing system including a sprocket mounted on a sprocket mount, a cone driver rotatable with the sprocket mount, a plurality of cone gears rotatably mounted between the cone driver and a cone holder, a driven pad frictionally engaged and rotatable with the cone gears, a main shaft rotatable with the driven pad, and a shifting shaft frictionally engaged and rotatable with the cone gears.
VARIABLE TRANSMISSION GEARING SYSTEM
17.12.2015
Patent
Elektronische Ressource
Englisch
TRANSMISSION AND DIFFERENTIAL GEARING AND ENGINE AND GEARING UNIT
Europäisches Patentamt | 2016
TRANSMISSION AND DIFFERENTIAL GEARING AND ENGINE AND GEARING UNIT
Europäisches Patentamt | 2016
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