415 / | HD | ROTARY KINETIC FLUID MOTORS OR PUMPS |
52.1 | DF | WITH MEANS FOR RE-ENTRY OF WORKING FLUID TO BLADE SET (E.G., RE-ENTRY TYPE DEVICE, PASSAGE, ETC.) {11} |
56.1 | DF | .~ Pump priming means {5} |
56.3 | .~.~ Having plural and arcuately arranged vanes around runner |