142684 ⎘
Piston machines or pumps characterised by having positively-driven valving the distribution being realised by moving the cylinder itself, e.g. by sliding or swinging
COMPACT VOLUMETRIC PUMP
#2Variable displacement pump-motor
#3Anti-gas lock valve for a reciprocating downhole pump
#4Piston pump with cam actuated valves
#5Distributing valve for concrete pump and the concrete pump
#6Hydraulic system and method for providing fluid pressure to hydraulically-powered systems