ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,405, issued on Aug. 19, was assigned to Guangzhou Sunqee Gear Co. Ltd. (Guangzhou, China).
"Gearbox and transmission system" was invented by Shunjun Tian (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gearbox includes a box, a first gear, and a second gear, in which the box is provided with a hollow chamber; the first gear is connected with a first rotating shaft and includes a first and second gear segment; the second gear is connected with a second rotating shaft and rotates around an axial direction thereof; and the first and second gear are provided in the chamber, the worm shaft is engaged perpendicular to the first gear seg...