ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,731, issued on May 20.
"Wall-mounted fly wall rack" was invented by Wei Yu (Loveland, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wall-mounted fly wall rack, which can be installed on a wall, comprises a rack body, a pulley assembly and a counterweight mechanism arranged on the rack body, wherein the rack body comprises a fixed frame and at least two movable frames; an adjustable locking mechanism is arranged between the movable frames and the fixed frame and is horizontally rotatably connected in a limited angle range; the adjustable locking mechanism comprises a pivot arm and a fixed arm; the movable frame is connected with the pivot ar...