142680 ⎘
Piston machines or pumps characterised by having positively-driven valving; Mechanical driving means therefor, e.g. cams for a rotating member being mounted on the main shaft
MULTIPLE DIAPHRAGM PUMP
#2FLUID SYSTEM WITH A PROPPANT MIXING PUMP
#3Reversible Reciprocating Pump
#4Multiple diaphragm pump
#5Pressing tool
#6Method and system for harnessing wind energy using a tethered airfoil
#7Multiple diaphragm pump
#8Internal cam metering pump