70222 ⎘
Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor Rider propelled cycles with auxiliary combustion engine
Sub-classes:Pet and Human Tricycle Device
#2Steerable crank system
#3Detachable powered push carts
#4POWER GENERATION AND DISTRIBUTION FOR LAND-BASED VEHICLE PROPULSION
#5Personal propulsion device with hands free control
#6Personal propulsion device with hands free control
#7Automatic dual-function clutch