242 / | HD | WINDING, TENSIONING, OR GUIDING |
520 | DF | CONVOLUTE WINDING OF MATERIAL {17} |
540 | DF | .~ With particular drive {5} |
541 | DF | .~.~ Driver engages coil periphery {7} |
541.4 | DF | .~.~.~ With drive pressure regulator (e.g., nip pressure control) {2} |
541.5 | .~.~.~.~ Coil engaging pressure element {1} | |
541.6 | DF | .~.~.~.~.~> Fluid actuator |