143593 ⎘
Rotary-piston pumps specially adapted for elastic fluids of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions of other than internal-axis type
ROTARY MOTOR WITH INTEGRAL FLUID SEAL
#2Rotary screw compressors utilizing viscous damping for vibration reduction
#3Compressor having balance mechanism for a thrust bearing
#4ROTARY ENGINES
#5Rotary engines
#6Vacuum cleaners especially quiet vacuum cleaners, pumps, and engines