NuVinci continuously variable transmission
Nuvinci Cycling technology currently under development for other applications, including wind turbines, light electric vehicles, outdoor power equipment, and automotive front-end accessory drives. == History == Mechanical variators existed since the 1800s, and have been used successfully in machinery, particularly the Kopp tilting ball variator.
Source: Wikipedia — NuVinci continuously variable transmission (CC BY-SA 4.0)