Patent ID: 6604503
Filing Date: 2003-08-12
Classification: F01C,F04C

Abstract:
For use with a rotary machine, a rotor which includes:a pair of parallel side surfaces; and a curved perimeter surface formed between said pair of parallel side surfaces, formed of a plurality of curved portions, each abutted by a pair of said curved portions, contiguous therewith and mutually tangential thereto wherein said curved perimeter surface further comprises: a major portion defining a first major arc subtending a predetermined angle at a predetermined center of rotation, and having a first radius; a minor portion defining a first minor arc subtending a predetermined angle at the predetermined center of rotation, and having a second radius, shorter than said first radius, said major and minor arcs being arranged along an axis of symmetry; and a pair of similar, intervening curved portions extending tangentially between major and minor arcs; wherein each of said pair of intervening curves is formed of a second major arc and a second minor arc of predetermined radii; wherein said curved perimeter surface is shaped such that when mounted for coplanar, non-touching, and same-directional rotation with another rotor of identical construction, and wherein said rotors have mutually parallel orientations at the start of rotation, and are rotated at the same angular velocity, said curved perimeter surface of said rotor is separated from the curved perimeter surface of the other rotor by a predetermined, fixed distance and wherein each said rotor has a geometric center, and the distance therebetween equals R1+R2, wherein R1 is the radius of said first major arc and R2 is the radius of said first minor arc.