Some cone CVT patterns use two rollers.[23][24] In 1903, William Evans and Paul Knauf utilized to get a patent on a consistently variable transmission using two parallel conical rollers pointing in reverse directions and related by belts that could be slid along the cones to vary the transmission ratio. WE https://gearboxcvt09641.angelinsblog.com/31949973/the-ultimate-guide-to-gearbox-cvt