ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,853, issued on Nov. 25, was assigned to BANCORESY TECHNOLOGY (ZHEJIANG) Co. LTD (Ningbo, China).
"Rotary dumbbell rack" was invented by Guangchao Liu (Ontario, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary dumbbell rack, including a base, where expansion bolts, a rotating shaft and triangular supporting plates are provided on the base; the triangular supporting plates clamp and fix the supporting shaft on the base; bearings are provided at upper and lower ends of the supporting shaft; a rotating sleeve is sleeved outside each of the bearings; square connecting tubes are fixed on two sides of each of the rotating sleeves; an outer cy...