Patent ID: 7625193

Claim:
A rotary machine comprising: a housing; a plurality of rotor spindles, each of which has centerline about which that rotor spindle rotates, and wherein the plurality of rotor spindles are mounted in said housing with their centerlines aligned along three orthogonal axes; a plurality of rotor blades, each of which is located on a corresponding different one of the plurality of rotor spindles for rotation therewith, wherein the plurality of rotor blades are arranged relative to each other so that each rotor blade of the plurality of rotor blades is in tangential sliding contact with at least two other rotor blades of the plurality of rotor blades, wherein the plurality of rotor blades forms a plurality of working chambers each having a volume which changes as the rotor spindles of the plurality of rotor spindles rotate; a gear system including a plurality of internal bevel gears, each of which is located on one end of a corresponding different one of the plurality of rotor spindles, wherein said gear system synchronizes rotation of the rotor spindles during operation; and a central valve mechanism forming a central chamber with the plurality of rotor spindles extending radially outward therefrom and around which the plurality of rotor blades are arranged, wherein said central valve mechanism comprises a valve which during operation of said central valve mechanism controls flow of a fluid between said central chamber and at least one of the plurality of working chambers.