ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,199, issued on Sept. 16, was assigned to NINGBO JINYU TECHNOLOGY INDUSTRY Co. LTD. (Ningbo, China).
"Short and small continuous sprayer" was invented by Cheng Hang (Ningbo, China) and Xianqiang Zhu (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A short and small continuous sprayer, including a spray head, where the spray head is connected to a valve rod, the valve rod is provided with a retaining cavity, the retaining cavity is provided with an upper spring, the upper spring is connected to a piston, a valve needle is arranged in the piston and sleeved on the valve rod, an inner cavity is formed between the piston and the valve needl...