ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,997, issued on Aug. 19, was assigned to Winsun technology Inc. (Irvine, Calif.).
"Ground rail printer" was invented by Yihe Ma (Irvine, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "This application discloses a ground rail type printer, which comprises two X-axis guide rails, two Z-axis guide rails, and a Y-axis guide rail. Both X-axis guide rails are equipped with a connector plate installed via a sliding mechanism. The bottom ends of the two Z-axis guide rails are respectively fixed to the tops of the corresponding connector plates by screws. A first rack is installed on the sides of the two X-axis guide rails that are closest to each othe...