ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,869, issued on June 24.
"Shock absorbing device" was invented by Wenhong Ma (Dongguan, China), Lei Luo (Dongguan, China), Hui Xia (Dongguan, China) and Lei Liu (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shock absorbing device comprises a shock absorbing device body, which comprises an upper shock absorbing cover and a lower shock absorbing cover, a primary shock absorbing element and a secondary shock absorbing element located on the outside of a circle of the primary shock absorbing element are arranged between the upper shock absorbing cover and the lower shock absorbing cover; a tower spring is matched with a plurality of s...