136700 ⎘
Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using lift valves
EXPANDER AND HEAT PUMP USING THE EXPANDER
#2EXPANDER AND HEAT PUMP USING THE EXPANDER
#3Displacement type expansion machine and fluid machine
#4Toroidal engine with variable displacement volume
#5Vane rotary expansion engine
#6Rotary positive displacement machine