ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,642, issued on May 20, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Rotary compressor" was invented by Minho Lee (Seoul, South Korea), Yongkyu Choi (Seoul, South Korea) and Bumdong Sa (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a rotary compressor, at least any one of a main bearing or a sub-bearing may have at least one axial-direction support portion that extends from an outer circumferential surface of a back pressure pocket and is formed to have a predetermined depth. The compressor may increase an oil film pressure that supports a roller in an axial direction thereof to stably support the roller including...