ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,358, issued on Sept. 9, was assigned to XIAMEN EDDE SPORTS TECHNOLOGY Co. LTD. (Xiamen, China).
"Dumbbell assembly" was invented by Lingpeng Shen (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dumbbell assembly includes a dumbbell, and the dumbbell includes a dumbbell rod, dumbbell pieces and fixing plates; the dumbbell rod includes a grip rod and two telescopic rods connected to the grip rod. The dumbbell piece includes a first surface and a second surface which are opposite to each other, a mounting hole is formed in each dumbbell piece, a first guide portion which is obliquely arranged on the first surface, a second guide portio...