ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,302, issued on July 22, was assigned to Dongguan Chaodian E-commerce Co. Ltd. (Dongguan, China).
"Air inflation-deflation valve" was invented by Zhexin Fan (Dongguan, China) and Zhaowu Wang (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air inflation-deflation valve includes an inflation head, a rubber seat, an inner sleeve, a shell, a first elastic part, a plug chamber, an air inlet rubber plug, a second elastic part and an air outlet rubber plug. When the air inflation-deflation valve is in use, the inflation head is inserted into a rubber chamber to contact an air port, external air enters an air passage, pushing open the air ...