The copyright which unites all the planetary gears revives the output and transfers it to an output shaft. Fixation of all the ring, Sunshine, and planetary gears function collectively for just a sole function. The purpose of fixation is to obtain preferred torque and speed. Samples of such transmissions https://jeffreyobjtd.ampedpages.com/not-known-factual-statements-about-gearbox-60774667