ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,227, issued on Jan. 13, was assigned to Ingersoll-Rand Industrial U.S. Inc. (Davidson, N.C.).
"Rotary screw compressor" was invented by James Christopher Collins (Mooresville, N.C.) and Willie Dwayne Valentine (Statesville, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas compressor is disclosed that includes a first rotor having a first rotor body, the first rotor body including a plurality of helical lobes, an internal volume within the first rotor body defined by a wall, and a turbine disposed within the internal volume, the turbine including a turbine body and a plurality of airfoils extending substantially radially from the turbine bod...