US Patent Issued to LG Electronics on Sept. 23 for "Robot vacuum cleaner" (South Korean Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,419,474, issued on Sept. 23, was assigned to LG Electronics Inc. (Seoul, South Korea).

"Robot vacuum cleaner" was invented by Hwang Kim (Seoul, South Korea), Sanghoon Han (Seoul, South Korea), Youngjun Jeon (Seoul, South Korea), Byungho Yoon (Seoul, South Korea) and Soohyun Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a robot vacuum cleaner comprising sub-wheels having variable rotational positions, the robot vacuum cleaner comprising subframes rotatably attached to main frames to ground the sub-wheels when in a constrained state."

The patent was filed on Oct. 14, 2020, under Application No. 1...