Some cone CVT models use two rollers.[23][24] In 1903, William Evans and Paul Knauf utilized to get a patent over a continuously variable transmission making use of two parallel conical rollers pointing in reverse Instructions and related by belts that may be slid alongside the cones to fluctuate the transmission https://jeffreyxwvrn.blogunteer.com/31779403/detailed-notes-on-gearbox-cvt