406 / | HD | CONVEYORS: FLUID CURRENT |
10 | DF | WITH MEANS TO CONTROL CONVEYING FLUID OR MOVEMENT OF LOAD IN RESPONSE TO SENSED CONDITION {3} |
12 | DF | .~ Control of conveying fluid {4} |
19 | DF | .~.~ Responsive to presence or absence or quantity of load {4} |
23 | DF | .~.~.~ Level or weight of load in receptacle {1} |
24 | .~.~.~.~ At intake {1} | |
25 | DF | .~.~.~.~.~> And control of load input to receptacle |