ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,019, issued on Jan. 13, was assigned to CHOSEN Co. LTD. (Chang Hua Hsien, Taiwan).
"Bicycle hub structure" was invented by Ching-Shu Chen (Changhua, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bicycle hub has a hub member and a chain seat. The hub member has an open containing space and a central axis protruding from the containing space. The containing space has a linking ring around the central axis, and the linking ring further has an annular linking toothed portion. An end of the chain seat has an engaging portion with a circular stopper and a circular rib and a driving ring and a first engaging toothed ring. A second engaging toothe...