ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,949, issued on Sept. 23, was assigned to LG Electronics Inc. (Seoul, South Korea).

"Hermetic compressor" was invented by Mingeon Jeong (Seoul, South Korea), Bokann Park (Seoul, South Korea), Kyoungjun Park (Seoul, South Korea) and Seeun Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hermetic compressor may include a frame, a crankshaft, and an oil pump. The crankshaft may be rotatably mounted to the frame. The oil pump may be mounted to a lower portion of the crankshaft to be rotatable together with the crankshaft. The oil pump may pump oil from a lower region to an upper region of a shell using centrifugal force. The cran...