Power transmission device and transportation device
OwnerKiyoyuki Hosodainventor
Life of this patent
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Abstract
A power transmission device having at least two one-way clutches is used to transmit the driving force of the power generator to the right and left drive wheels. By this power transmission device, it is possible to transmit the driving force of the power generator to the right and left drive wheels almost half and half when the wheel contact load are the same. While if the drive wheels rotate at a different speed, hardly any driving force is transmitted to the side of the drive wheel which can rotate faster and the driving force is mainly transmitted to the wheel rotates slowly. Accordingly, it is possible to transmit the power without fail to the drive wheel which touches the ground even when the transportation device is curving or slipping, or when one of the wheels parts from the ground.
Claims7
A transportation device, comprising:
- a power generator;
- a frame on which a rider rides;
- a plurality of wheels which support the frame, the wheels including right and left drive wheels;
- a drive shaft assembly for transmitting power from the power generator to the right and left drive wheels;
- first and second one way clutches located at a position on the drive shaft assembly where power from the power generator is transferred to the drive shaft assembly, the first one-way clutch transmits power to the left drive wheel and the second one way clutch transmits power to the right drive wheel;
- means for connecting the frame to the drive shaft assembly such that an angle between the frame and the drive shaft assembly changes as the transportation device turns;
- and
- wherein the frame includes a bend at an end thereof adjacent the drive shaft assembly and the bend causes the angle to change as the transportation device turns.
Dependencies are inferred from the claim text.