Pedal crank derailleur for a bicycle
Pedal crank drive for a bicycle
Pedal crank/gear assembly for a bicycle
Pedal-actuated bicycle gear shift means
Person powered vehicle automatic transmission
Pivoting belt tensioning device
Positioning device for a derailleur for a bicycle
Power operated gear change assembly for bicycles
Power supply structure for bicycles
Power transmission
Power transmission
Power transmission
Power transmission device
Power transmission system
Power transmission system
Power transmission system particularly useful for bicycles
Power transmitting mechanism
Process for controlling gear shifting in a cycle, and...
Process for controlling gear shifting in a cycle, and...
Process for controlling gear shifting in a cycle, and...