Patent ID: 8414434
Filing Date: 2013-04-09
Classification: B62M

Abstract:
1. A transmission device for a cycle, said device comprising: a bottom bracket fixed relative to a cycle frame, said bottom bracket including a cylindrical main body centered about a first axis and a secondary body centered about a second axis, said second axis being parallel to, but not merged with, said first axis; a crankset rotationally mounted along the first axis relative to the main body, said crankset comprising: a chainwheel rotationally mounted along the second axis relative to the secondary body, said chainwheel comprising: said first and third toothed elements constituting a first gear train and said second and fourth toothed elements constituting a second gear train; at least one of said first, second, third and fourth toothed elements having radially internal teeth; a disengageable blocking device to block selectively the following: