ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,926, issued on Aug. 26, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).

"Economizer injection in a reciprocating compressor" was invented by Vishnu M. Sishtla (Syracuse, N.Y.) and Emir Alemic (Manlius, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compressor includes a cylinder block having a first bore and a cylinder head overlapping the cylinder block. The cylinder head has a second bore aligned with the first bore. The second bore is separated into a plurality of distinct regions including a suction region and an economizer region. A plurality of valves includes a suction valve selectively operable to fluidly couple the suction ...