Some cone CVT layouts use two rollers.[23][24] In 1903, William Evans and Paul Knauf used for your patent on a continually variable transmission working with two parallel conical rollers pointing in opposite directions and linked by belts that may be slid alongside the cones to vary the transmission ratio. The https://gearbox-cvt32075.blogdosaga.com/32632206/what-does-gearbox-cvt-mean