Some cone CVT styles use two rollers.[23][24] In 1903, William Evans and Paul Knauf applied for any patent with a constantly variable transmission applying two parallel conical rollers pointing in reverse directions and linked by belts that may be slid along the cones to change the transmission ratio. Selected versions https://gearbox-cvt32074.blogdeazar.com/32827660/getting-my-gearbox-cvt-to-work