Abstract: A folding electric bicycle in one embodiment includes a front case comprising a door and two auxiliary wheels; a pivotal head tube; two handlebars; a swivel fork telescopically connected to the head tube; a front wheel; a drive mechanism comprising a folding frame, a front chain wheel, two pedals, a rear bracket, a rear wheel, first and second rear chain wheels, and a main drive chain rotatably fitted around the front chain wheel and the first rear chain wheel; a detachable seat assembly; a battery pack; an electric motor for rotating the rear wheel; and a driven wheel interconnecting the electric motor and the second rear chain wheel. For collapsing the bicycle, a driver detaches the seat assembly, folds the frame, places the frame, the seat assembly, and the rear wheel in the case, partially disposes the front wheel in the case, and closes the door.

Abstract: A folding electric bicycle in one embodiment includes a front case comprising a door and two auxiliary wheels; a pivotal head tube; two handlebars; a swivel fork telescopically connected to the head tube; a front wheel; a drive mechanism comprising a folding frame, a front chain wheel, two pedals, a rear bracket, a rear wheel, first and second rear chain wheels, and a main drive chain rotatably fitted around the front chain wheel and the first rear chain wheel; a detachable seat assembly; a battery pack; an electric motor for rotating the rear wheel; and a driven wheel interconnecting the electric motor and the second rear chain wheel. For collapsing the bicycle, a driver detaches the seat assembly, folds the frame, places the frame, the seat assembly, and the rear wheel in the case, partially disposes the front wheel in the case, and closes the door.

Abstract: A personal mobility vehicle includes a housing comprising an internal space, two front wheels, a rear mating member, and a rear telescopic T-shaped handle; a battery powered electric motor in the housing for rotating the front wheels; a control on the handle for controlling movement and steering of the vehicle; and a seat assembly comprising a front foot rest having a corresponding mating member adapted to releasably secure to the mating member, a rear base hingedly secured to the foot rest and including an upward projecting fastening member, at least one rear wheel, a seat, and a seat post extending downward from the seat to pivotably fasten in the fastening member. Detaching the corresponding mating member from the mating member, folding the foot rest toward the base, and folding the base toward the seat post will fold the seat assembly for disposing in the space of the housing.