Patent ID: 8308459

Claim:
A Moineau pump or Moineau compressor comprising a conically designed inner element ( 4 ) and a conically designed outer element ( 8 ), whose longitudinal axes (X 1 , X 2 ) run at an angle to one another and intersect at a point, wherein the pump or compressor includes at least two sections ( 2 a , 2 b , 2 c , 2 d ) in the axial direction, wherein a part ( 4 b ) of the inner element ( 4 ) located in a second section ( 2 b ) is arranged rotated with respect to a part ( 4 a ) of the inner element located in a first section ( 2 a ) about the longitudinal axis (X 1 ) of the inner element ( 4 ), and a part ( 8 b ) of the outer element ( 8 ) located in the second section ( 2 b ) is arranged rotated with respect to a part ( 8 a ) of the outer element ( 8 ) located in the first section ( 2 a ) about the longitudinal axis (X 2 ) of the outer element ( 8 ).