ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,271, issued on Aug. 4.
"Double-grip multi-stage telescopic adjustment mechanism" was invented by Quan Zhao (Dongguan, China) and Shaoping Wan (Yueyang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double-grip multi-stage telescopic adjustment mechanism includes two decorative covers, an outer housing is fixedly connected to adjacent side of each of two decorative covers, and a support sleeve column is fixedly connected to adjacent side of two outer housings; a key mechanism is installed on front side of the support sleeve column; a motion mechanism is installed on rear side of the support sleeve column, a biting vibration mechanism for reci...