| 474 / | HD | ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS |
| 202 | DF | POSITIVE DRIVE BELT {3} |
| 206 | DF | .~ Belt formed of rigid links {9} |
| 210 | ![]() | .~.~ Links pivotable about diverse axes during operation (e.g., "universal" connection facilitating alignment with sprockets in diverse planes) {1} |
| 211 | DF | .~.~.~> Ball-and-socket connection |