Patent ID: 7162993

Claim:
A toroidal intersecting vane machine, which comprises a supporting structure having an inside surface, a first rotor and at least one intersecting second rotor rotatably mounted in said supporting structure, wherein: (a) said first rotor has a plurality of first vanes positioned on a radially inner peripheral surface of said first rotor, with spaces between said first vanes and said surface defining a plurality of primary chambers; (b) an intake port which permits flow of a fluid into said primary chamber and an exhaust port which permits exhaust of the fluid out of said primary chamber; (c) said second rotor has a plurality of secondary vanes positioned on a radially outer peripheral surface of said second rotor, with spaces between said secondary vanes and said surface defining a plurality of secondary chambers; (d) a first axis of rotation of said first rotor and a second axis of rotation of said second rotor arranged so that said axes of rotation do not intersect, said first rotor, said second rotor, first vanes and secondary vanes being arranged so that said first vanes and said secondary vanes intersect at only one location during their rotation; and (e) wherein the secondary vanes positively displace the primary chambers and pressurize the fluid in the primary chambers and the primary vanes positively displace the fluid in the secondary chambers and do not substantially pressurize the fluid in the secondary chambers.