Patent ID: 6241472
Filing Date: 2001-06-05
Classification: B01F

Abstract:
A rotor-stator assembly, comprising:a) a substantially cylindrical rotor having at least one rotor surface which includes a first plurality of rotor grooves, each of said rotor grooves being substantially continuous, andb) a substantially cylindrical stator having at least one stator surface which includes a first plurality of stator grooves, each of said stator grooves being substantially continuous, whereinsaid rotor and said stator are mounted such that said first plurality of rotor grooves are substantially parallel to said first plurality of stator grooves and such that when said rotor is rotated relative to said stator each of said first plurality of rotor grooves passes each of said first plurality of stator groves and wherein each of said grooves in said first plurality of rotor grooves and each of said grooves in said first plurality of stator grooves has a cross section which is at least approximately 75% circular.