Patent ID: 7293955

Claim:
A gas compressor, said compressor comprising: (a) an inlet for supply of gas to be compressed; (b) a rotor, said rotor having a central axis and adapted for rotary motion thereabout, said rotor extending radially outward from said central axis to an outer surface portion having an outer extremity; (c) one or more supersonic shock compression ramps, each one of said supersonic shock compression ramps forming a features on said outer surface portion of said rotor; (d) a stationary peripheral wall, said stationary peripheral wall (i) positioned radially outward from said central axis, and (ii) positioned very slightly radially outward from said outer extremity of said rotor; and (iii) having an interior surface portion; (e) said one or more supersonic shock compression ramps and said stationary peripheral wall cooperating to compress said gas therebetween; (f) one or more strakes, each of said one or more strakes provided adjacent to one of said or more supersonic compression ramps, and at least a portion of each of said one or more strakes extending outward from at least a portion of said outer surface portion of said rotor to a point adjacent said interior surface portion of said peripheral wall; (g) whereby said one or more strakes effectively separate said inlet gas from compressed gas downstream of each one of said supersonic gas compression ramps.