Abstract: A motorized tricycle comprising a frame including first, second, and third coupling members, two rear wheels, and a rear wheels mounting structure comprising side pieces on either side; cross pieces interconnecting the side pieces; two forward cylindrical first joints; two seats each projecting upward from the topmost side piece and comprising a top second joint and a bottom first threaded hole; two second threaded holes each disposed on a section between the first and second joints of the same side; two inverted L-shaped reinforcement plates comprising a hollow boss projecting inward from a bending point, and first and second through holes at both ends respectively; two sleeves each put on the first joint; two cylinders each disposed in the second joint; and screws for securing the reinforcement plate, the rear wheels mounting structure, and the frame together.

Abstract: A differential includes a coaxial input axle and output axle assembly comprising an input axle and an output axle; a first gear mounted in the assembly; a second gear mounted in the assembly and operatively connected to the output axle; a clutch mounted in the assembly between the first gear and the second gear and operatively connected to the assembly wherein a distance between the first gear and the input axle is less than that between the second gear and the input axle; a first driven shaft comprising a third gear operatively connected thereto, the third gear being meshed with the first gear; and a second driven shaft comprising a fourth gear and a fifth gear mounted on both ends thereof wherein the fourth gear is meshed with the third gear and the fifth gear is meshed with the second gear.

Abstract: A device for transferring two-wheel motorbike into three-wheel vehicle includes a rectangle frame directly connected to the frame of the two-wheel motorbike and two side frames are connected to two ends of the rectangle frame. Two wing rods ARE connected to the two side frames respectively and an arm is pivotably connected to each of the side rods. A cushion means is connected between the side frame and the arm. A differential frame is connected between the two side frames so as to be connected with a differential which has an input end connected to an output shaft of an engine, and an output end of the differential is connected to two transmitting shafts which are connected to two rear wheels. The rear wheels each have a brake mechanism.

Abstract: A shock absorbing member includes a first member composed of a first tube and a second tube which is located at a center of the first tube. Shock absorbing material is filled between the first tube and the second tube. Two second members are located below the first member and connected to the first member by at least one board. Each second member has a third tube and a fourth tube which extends through the third tube. Shock absorbing material is filled between the third tube and the fourth tube. Four shock absorbing member are connected between a first frame and a second frame. The first members are connected with the first frame which carries power system such as engine, and the second members are connected to a second frame which is connected to wheels.

Abstract: A device for transferring two-wheel motorbike into three-wheel vehicle includes a rectangle frame directly connected to the frame of the two-wheel motorbike and two side frames are connected to two ends of the rectangle frame. Two wing rods ARE connected to the two side frames respectively and an arm is pivotably connected to each of the side rods a cushion means is connected between the side frame and the arm. A differential frame is connected between the two side frames so as to be connected with a differential which has an input end connected to an output shaft of an engine, and an output end of the differential is connected to two transmitting shafts which are connected to two rear wheels. The rear wheels each have a brake mechanism.

Abstract: A shock absorbing member includes a first member composed of a first tube and a second tube which is located at a center of the first tube. Shock absorbing material is filled between the first tube and the second tube. Two second members are located below the first member and connected to the first member by at least one board. Each second member has a third tube and a fourth tube which extends through the third tube. Shock absorbing material is filled between the third tube and the fourth tube. Four shock absorbing member are connected between a first frame and a second frame. The first members are connected with the first frame which carries power system such as engine, and the second members are connected to a second frame which is connected to wheels.

Abstract: A differential includes a case with which a gear set is received and the gear set includes a spiral gear. Two output shafts extend through the case so as to be connected to two wheels. An input shaft is connected to the differential and has a bevel gear which is engaged with the spiral gear and drives the spiral gear so as to reduce the noise during operation.