| 475 / | HD | PLANETARY GEAR TRANSMISSION SYSTEMS OR COMPONENTS |
| 220 | DF | DIFFERENTIAL PLANETARY GEARING {8} |
| 230 | DF | .~ Bevel gear differential {4} |
| 231 | DF | .~.~ With means to limit overspeed of one output (e.g., lock-up clutch) {6} |
| 240 | DF | .~.~.~ Spring bias on overspeed limiting means {1} |
| 241 | ![]() | .~.~.~.~ Helically coiled spring |