| 475 / | HD | PLANETARY GEAR TRANSMISSION SYSTEMS OR COMPONENTS | 
| 31 | DF | FLUID DRIVE OR CONTROL OF PLANETARY GEARING {11} | 
| 91 | DF | .~ Fluid resistance inhibits relative rotation {5} | 
| 93 | DF | .~.~ Valve inhibits fluid flow {7} | 
| 99 | DF | .~.~.~ Interrelated valve control and mechanical clutch or brake {1} | 
| 100 |  | .~.~.~.~ Valve control and mechanical clutch {1} | 
| 101 | DF | .~.~.~.~.~> Pump pressure engages mechanical clutch |