Automatically-reversing piston-and-cylinder unit
Control system for reciprocating device
Fluid driven reciprocating pump
Fluid pressure operated piston engine assembly
Hydraulic engine
Hydraulic machine, in particular hydraulic motor, with a...
Method and apparatus for deicing a leading edge
Reciprocating differential hydraulic machine, especially a...
Reciprocating hydraulic machine, especially a motor, and...
Reduced icing low friction air valve
Reversing mechanism for a switchover seat-type valve
Sprag motor
Toys utilizing fluid propulsion device