ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,258, issued on May 27, was assigned to Zhejiang Weiming Environment Protection Co. Ltd. (Wenzhou, China).
"Elastic reset device" was invented by Guangming Xiang (Wenzhou, China), Rong Li (Wenzhou, China) and Yuan Ren (Wenzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An elastic reset device arranged in the middle of a grate plate is disclosed, which includes reset blocks, springs, sleeves and a guide plate. The reset blocks comprise a left reset block and a right reset block, the upper ends of the left and right reset blocks are partially overlapped, a folding angle Alpha is provided at the overlapping portion and is not less than 45 deg...