143142 ⎘
Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups - by changing the effective cross-section of the working surface of the piston
VARIABLE DIAMETER VALVE BORES FOR THRU ROD FLUID ENDS
#2Fracturing pump assembly
#3Intensity modifiable intensifier pump
#4Metering mechanism for a proportioning pump, and associated pump and usage method
#5Manual dual-directional inflating device
#6Piston pump
#7Reciprocating low-speed heavy-load hydraulic pump with variable action area
#8PUMP AND HYDRODYNAMIC RETARDER EQUIPPED WITH SAID PUMP AND GEAR UNIT EQUIPPED WITH SUCH A PUMP
#9Two-stage hand pump