ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,498, issued on June 3.
"Long-distance ascent-descent clockwork" was invented by Ming-Ken Chen (Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A long-distance ascent-descent clockwork includes a first driving module, a rack, and a second driving module. The first driving module has a light-emitting unit and a first motor. The rack is coupled to a supporting rod. The supporting rod has one end joined to the first driving module. The second driving module has a second motor. The second motor has a first rotating shaft having a gear for meshing with the rack to drive the rack to ascend and descend. The first driving module has a swinging m...