| 310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
|
| 10 | DF | DYNAMOELECTRIC {5} |
| 40 R | DF | .~ Rotary {28} |
| 66 | DF | .~.~ With other elements {7} |
| 75 R |  | .~.~.~ Drive mechanism {9} |
| 76 | DF | .~.~.~.~> Brake and clutch |
| 77 | DF | .~.~.~.~> Brake |
| 78 | DF | .~.~.~.~> Clutch |
| 79 | DF | .~.~.~.~> Shaft and armature timing or phasing connection |
| 80 | DF | .~.~.~.~> Motion conversion {4} |
| 75 A | DF | .~.~.~.~> Spring or gravity drive |
| 75 B | DF | .~.~.~.~> Hand- or foot-operated |
| 75 C | DF | .~.~.~.~> Rim drive (e.g., bicycle generator drive by wheel, rim, or tire) |
| 75 D | DF | .~.~.~.~> Flexible shaft or coupling and hollow shaft drive |