ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,682, issued on May 26, was assigned to DaVinci II CSJ LLC (Fairfield, N.J.).
"Cleaning device" was invented by Qian Hong (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cleaning device including: a body; a motor housed within the body; a roller body operatively connected to the motor and configured to rotate during operation, wherein the roller body includes: a flexible core extending along a central axis; a plurality of circumferentially spaced primary ribs projecting radially outward from the flexible core to a first radial height; a plurality of circumferentially spaced secondary ribs interleaved with the primary ribs and projectin...