In a standard automated transmission, the gears are literally gears -- interlocking, toothed wheels that aid transmit and modify rotary movement and torque. A mix of planetary gears makes all of the different equipment ratios which the transmission can make, typically 4 ahead gears and a single reverse equipment. https://kameronqrqnl.blogolenta.com/29246209/the-basic-principles-of-gearbox-cvt