A tricycle 101 comprises a frame 103, two rear wheels 113 and a front wheel 107, a means for enabling the frame 103 to roll relative to the rear wheels 113 and means for driving the rear wheels to rotate the rear wheels 113 to propel the tricycle along a road. The drive means may comprise a drive shaft 133 driving a common rear wheel axle 155 via bevel gears 153 and helical gears 123. The frame 103 may roll about an axis coincident with the drive shaft 133. The axis may be inclined to the horizontal such that it intersects with the road surface at the front wheels contact point. The tricycle may further comprise a rear load platform 115.
Tricycle
2018-09-26
Patent
Electronic Resource
English