| 474 / | HD | ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS |
| 237 | DF | FRICTION DRIVE BELT {14} |
| 253 | DF | .~ Including particular means connecting opposite ends to form loop {2} |
| 255 | DF | .~.~ Including discrete connector {3} |
| 256 | ![]() | .~.~.~ Connector comprises element inserted into longitudinal openings in belt ends |