142339 ⎘
Reciprocating-piston liquid engines; Distributing valve-gear peculiar thereto actuated by piston or piston-rod mechanically
Apparatus for generating energy
#2Low-energy and high pressure, hydraulic, pneumatic engine
#3USING GRAVITY AND PIEZOELECTRIC ELEMENTS TO PRODUCE ELECTRIC POWER
#4Hydraulic motor
#5Reciprocating hydraulic machine, especially a motor, and dosing apparatus comprising such a motor