US Patent 8061725 Motorized skatedboard

A motorized skateboard (10) having an electric motor (102) that rotates a rear fifth drive wheel (86) that extends behind the rear truck (36) of the motorized skateboard (10). The drive wheel (86), which is biased downward by the force of gravity, interfaces with the surface of the ground. A hand-held cable assembly (140) having a power switch (142) controls the operation of the electric motor (102) which applies power to and causes the rear drive wheel (86) to rotate. The rotating drive wheel (86) further causes the motorized skateboard (10) to be propelled forward. The forward motion will continue as long as the rider depresses the power switch (142).