| 474 / | HD | ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS |
| 237 | DF | FRICTION DRIVE BELT {14} |
| 261 | DF | .~ Including plural superposed layers each having strands particularly oriented relative to belt dimension {1} |
| 262 | ![]() | .~.~ Strands in the layers are oblique to longitudinal run of belt (e.g., plural layers of bias fabric, etc.) |