ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,120, issued on Feb. 18, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Linear compressor" was invented by Junghae Kim (Seoul, South Korea), Sangeun Bae (Seoul, South Korea) and Seunguk Kim (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A linear compressor includes a cylinder, a piston axially reciprocating in the cylinder, a first muffler unit coupled to the piston, a back cover that is disposed at a rear of the piston and defines an opening at a radially central area, and a second muffler unit coupled to the opening. The first muffler unit includes an inner guide disposed in the piston and a first intake muffler disp...