ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,572, issued on Dec. 23, was assigned to Yongkang Qifeng Industry and Trade Co. Ltd. (Zhejiang, China).
"Vertical plug-in weight plate device" was invented by Huiguan Chen (Zhejiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "This invention relates to a vertical plug-in weight plate device, which aims to address the issues of inconvenient weight adjustment and low flexibility in the use of existing weight plate devices. The weight plate device includes a handle, a weight plate, and a knob with a limiting rod. Fixed plates are located at both ends of the handle, and these fixed plates and the handle form a longitudinal plug-in channel throug...