ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,092, issued on May 20, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Cleaning unit comprising agitator" was invented by Woo Hong (Seoul, South Korea), Sangik Lee (Seoul, South Korea) and Jongho Park (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a cleaning unit comprising a variable brush portion. The cleaning unit according to an embodiment of the present invention comprises a shaft capable of reciprocating along an axial direction, wherein a first cam protrudes from the outer circumferential surface of the shaft. In addition, the brush portion is arranged on the outer circumferential surface of a body ...