Patent ID: 7150611

Claim:
An equipment with mutually interacting spiral teeth, comprising at least two spiral rotors seating in a stator, where at least a part of a rotation wrapper of each of the rotors and corresponding parts of the stator inner surface and the other rotor shaft surface are created by a rotation of a curve having a convex or concave shape, wherein surfaces of the rotor shafts, a rotation wrapper of each of the rotors, each one being furnished with at least one spiral tooth, and a shape of the stator inner surface are created by a rotation of a combination of curves having at least one of convex and concave shape, the curve waveform being defined by shapes of the spiral teeth profiles and their thread lead, provided the spiral teeth profiles and their thread lead as presented in any section perpendicular to a longitudinal axis of the rotors correspond to required values of pressure, volume and velocity of a media in any part of a working space within the section, the working space being defined as an intermediate space between respective spiral rotors themselves and between the rotors and the stator, while the spiral teeth manifest leads of the same or opposite sense.