ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,117, issued on Jan. 27, was assigned to Yili Industrial U.S. Co. Ltd. (Grand Rapids, Mich.).
"Low-resistance lockable gas spring" was invented by Duanzhong Ying (Ningbo, China) and Libin Wang (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas spring having concentric outer and inner tubes that define a first chamber between the tubes is provided with a floating piston sealingly and slidingly radially disposed against an inner surface of the inner tube and axially disposed between a valve piston and a rear cap."
The patent was filed on Jan. 23, 2023, under Application No. 18/100,353.
*For further information, including images, char...