Some cone CVT designs use two rollers.[23][24] In 1903, William Evans and Paul Knauf used for a patent on a continuously variable transmission using two parallel conical rollers pointing in opposite Instructions and linked by belts which could be slid along the cones to change the transmission ratio. Some drill https://gearboxcvt19741.bloguetechno.com/what-does-gearbox-cvt-mean-67864640