ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,057, issued on June 3, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Robot cleaner" was invented by Seungjin Lee (Seoul, South Korea) and Hwang Kim (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a robot cleaner, more particularly, to a robot cleaner that may be escaped from a trapped state by an escaping unit formed in an inner surface of a wheel, when a body of the robot cleaner is caught in a protrusion to put the robot cleaner in a trapped state where the robot cleaner cannot run during the running on the floor of a cleaning area."
The patent was filed on Oct. 2, 2019, under Appli...