143447 ⎘
Rotary-piston machines or pumps having the characteristics covered by two or more groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in groups and relative reciprocation between co-operating members with vanes hinged to the outer member and reciprocating with respect to the outer member
Variable displacement vane pump with improved pressure control and range
#2Vacuum pump with separate oil outlet with relief valve
#3REFRIGERATION CYCLE DEVICE
#4Concentric rotary fluid machine
#5Pendulum slide pump with at least one communication channel