In the event the strain drops, springs induce the clutch to release. Evenly spaced ridges, termed splines, line the inside and outside of the clutch to lock in the gears and also the clutch housing. You could go through more details on these clutches in How Automatic Transmissions Operate. This https://clutchplate76418.blogdomago.com/31996287/the-fact-about-clutch-plate-that-no-one-is-suggesting