ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,492, issued on Nov. 25, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Screw compressor and refrigeration apparatus" was invented by Tadashi Okada (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A screw compressor includes a screw rotor having a plurality of helical grooves, and a gate rotor with gates to mesh with the helical grooves. Each of the gates first and second seal lines to come into contact with side wall surfaces of the helical grooves. Shapes of the first and second seal lines are asymmetric with respect to a first imaginary straight line passing through a rotation center of the gate rotor and a first intermediate ...