Abstract: A bicycle having a frame with a saddle, and rear and front wheels. A large gear is rotated integrally with the rear wheel and is concentric with an axle thereof and includes a diameter smaller than the rear wheel. A small gear circumscribes the large gear above the rear wheel axle, a small gear supporting bracket swings about the rear wheel axle and rotatably supports the small gear. A load receiving surface, a load transmission unit movably supported to the frame and movable longitudinally on the load receiving surface are provided. A first sprocket is concentric with the small gear, a second sprocket is rotatably provided rear of the first sprocket and lower than the rotation center thereof, a chain is wound between the first and second sprockets, and a first rachet which mounted on the small gear restricts rearward rotation of the rear wheel via the large gear.

Abstract: A bicycle having a frame with a saddle, and rear and front wheels. A large gear is rotated integrally with the rear wheel and is concentric with an axle thereof and includes a diameter smaller than the rear wheel. A small gear circumscribes the large gear above the rear wheel axle, a small gear supporting bracket swings about the rear wheel axle and rotatably supports the small gear. A load receiving surface, a load transmission unit movably supported to the frame and movable longitudinally on the load receiving surface are provided. A first sprocket is concentric with the small gear, a second sprocket is rotatably provided rear of the first sprocket and lower than the rotation center thereof, a chain is wound between the first and second sprockets, and a first rachet which mounted on the small gear restricts rearward rotation of the rear wheel via the large gear.

Abstract: A manual movable body with wheels 10 which can be moved by manually rotating the wheels, comprising an upper body frame 12 supporting a heavy goods, a pair of travelling wheels 18, each of which is provided on the corresponding side of a lower body frame 14 which is not in contact with upper body frame 12, and is rotationally supported by a first horizontal rotation shaft 16 extending in the widthwise direction of the lower body frame 14, and a pair of abutting rollers, each of which is mounted on upper body frame 12, and is rotationally supported by a second horizontal rotation shaft extending in the widthwise direction of the upper body frame 12.

Abstract: A manual movable body with wheels 10 which can be moved by manually rotating the wheels, comprising an upper body frame 12 supporting a heavy goods, a pair of travelling wheels 18, each of which is provided on the corresponding side of a lower body frame 14 which is not in contact with upper body frame 12, and is rotationally supported by a first horizontal rotation shaft 16 extending in the widthwise direction of the lower body frame 14, and a pair of abutting rollers, each of which is mounted on upper body frame 12, and is rotationally supported by a second horizontal rotation shaft extending in the widthwise direction of the upper body frame 12.