| 198 / | HD | CONVEYORS: POWER-DRIVEN |
| 570 | DF | CONVEYING SYSTEM HAVING PLURAL POWER-DRIVEN CONVEYING SECTIONS {18} |
| 602 | DF | .~ Forming a single conveying path {6} |
| 604 | DF | .~.~ Load simultaneously engaged between and moved by coacting conveyors {1} |
| 605 | ![]() | .~.~.~ With load transfer between coacting conveyors |