ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,732, issued on May 20.
"Assembled dumbbell and dumbbell main body thereof" was invented by Chun-Wei Lee (New Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dumbbell main body includes two side boards, a connecting shaft, a rotating unit and a fastener. Each of the two side boards includes a containing space, a side-board upper chute, a side-board lower chute, a plurality of fastening holes and two fastening blocks. One of the fastening blocks is located above the other fastening blocks. Two ends of the connecting shaft are respectively connected to the two side boards. The rotating unit includes two rotating rings, four connecting b...