143619 ⎘
Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group and having a hinged member
Sub-classes:ROTARY COMPRESSOR AND REFRIGERATION DEVICE
#2ECCENTRIC MOVABLE VANE PUMP
#3Compressor
#4Rotation device and rotor compressor and fluid motor having the same
#5Rotary compressor
#6Rotary systems lubricated by fluid being processed
#7ROTARY COMPRESSOR AND METHOD