ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,642, issued on July 28, was assigned to QINGDAO HAIER DRUM WASHING MACHINE Co. LTD. (Qingdao, China) and HAIER SMART HOME Co. LTD. (Qingdao, China).

"Nozzle structure, delivery apparatus and washing machine and additive delivery method" was invented by Tao Huang (Shandong, China), Xuefeng Geng (Shandong, China), Baozhen Cheng (Shandong, China) and Huacheng Zhang (Shandong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A nozzle structure including a spray pipe, including an outlet end provided with a spray head formed with a spray outlet. The spray head is provided with a spray cavity and a flow channel, the spray cavity is connected with the ...