Speed changing device for e.g. car, has transmission with pinion, and arms that are moved by pistons under oil pressure so that blades of pinion move from central axis and diameter of pinion increases

摘要

The device has a transmission constituted of a single pinion with variable diameter. The pinion has a central axle (18) surrounding blades (4) that are fixed to arms (5). The arms are moved by pistons under oil pressure so that the blades move from the axis and the diameter of the pinion increases. A belt is placed on the pinion whose diameter changes modify driving speed.