Patent ID: 7891686

Claim:
A manually propelled vehicle, the vehicle comprising: a frame having a forward end, a rear end, and at least one seat, defined having a central frame section located between the forward end and the at least one seat; a front fork assembly attached to the frame forward end; at least one leading wheel rotationally assembled to the front fork; at least one trailing wheel rotationally assembled to a trailing end of the vehicle; a pivot column rotationally engaging with said central frame section, rotating about a horizontal axis that is substantially perpendicular to said longitudinal axis of the frame; an upper propulsion member disposed upon an upper portion of said pivot column; a lower propulsion member being in mechanical communication with a lower portion of said pivot column; at least one rotational drive gear engaged with at least one wheel; a drive member providing communication between said pivot column lower portion and said at least one rotational drive gear; a drive propulsion system engaged with said at least one rotational drive gear, the propulsion system engaging with and providing propulsion to an upper portion of the rotational drive gear during a counterclockwise motion of the pivot column and engaging with and providing propulsion to a lower portion of the rotational drive gear during a clockwise motion of the pivot column; and wherein the at least one rotational drive gear is in communication with at least one of a leading wheel and a trailing wheel, providing rotation to the wheel.