ALEXANDRIA, Va., May 5 -- United States Patent no. 12,617,492, issued on May 5, was assigned to TIEN HSIN INDUSTRIES Co. LTD. (Taichung City, Taiwan).
"Electronic derailleur" was invented by Shang-Feng Lin (Taichung City, Taiwan), Chang-Chun Kao (Taichung City, Taiwan) and Ruei-Yo Lin (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic derailleur mounted on a frame of a bicycle includes a base portion for connecting to the frame, a movable portion, a first linkage, a second linkage, four pivot shafts, and a battery unit. The movable portion is movable relative to the base portion. Both the first linkage and the second linkage are pivotally connected to the base portion and the...