ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,545, issued on Dec. 9, was assigned to Shenzhen AiChong Industrial Co. Ltd. (Shenzhen, China).
"Non-return device for pipeline port" was invented by Aicheng Yin (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a non-return device for a pipeline port, including a main body portion and a non-return portion. The main body portion is of a barrel-shaped structure provided with a channel, and the non-return portion is provided with a plurality of through holes, wherein the main body portion and/or the non-return portion is provided with a limiting structure, used to limit relative positions between the main body portion and the n...