ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,957, issued on March 25, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Linear compressor" was invented by Sangjin Song (Seoul, South Korea), Junghae Kim (Seoul, South Korea) and Chulgi Roh (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A linear compressor includes: a piston configured to reciprocate in an axial direction, and a cylinder that is provided on a radially outer side of the piston to accommodate the piston and that defines a compression space with the piston. The cylinder includes: a gas hole defined at the cylinder such that a first end of the gas hole is at an outer circumferential surface of the cylind...