ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,229, issued on April 8, was assigned to FOSITEK Corp. (New Taipei, Taiwan).
"Rotation device for a turnstile" was invented by Chun-Han Lin (New Taipei, Taiwan) and Yung-Chih Tseng (New Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotation device includes a base seat, an axle unit and a lock unit. The axle unit extends into the base seat. The lock unit includes a lock plate that is sleeved on the axle unit, and a lock member that is disposed on the base seat. The lock plate is formed with a first lock groove. The lock member has a lock portion that is operable to move into the first lock groove. The lock plate is locked by the lock...