ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,351, issued on Aug. 19, was assigned to BESTWAY INFLATABLES & MATERIAL CORP. (Shanghai).
"Inflatable product and built-in air pump assembly" was invented by Xianglin Zeng (Shanghai), Qingshui Song (Shanghai) and Wanbin Qiu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air pump assembly includes; a main air pump in a chamber; and an air pressure adjustment assembly including: a housing in the chamber; a flexible board defining a first chamber on a first side of the board and a second chamber on a second side of the board, the first chamber in fluid communication with an inflatable chamber of the inflatable product, and the second chambe...