ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,392, issued on April 22, was assigned to HANGZHOU UNITED TOOLS Co. LTD. (Hangzhou, China) and HANGZHOU GREAT STAR INDUSTRIAL Co. LTD. (Hangzhou, China).
"Glue gun" was invented by Yueming Li (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A glue gun includes a first handle and a second handle which are connected via a pivot pin shaft, and one of them is arranged as a fixed handle, and the other is arranged as a movable handle. The movable handle is provided with an actuating member configured to push a push member. A spacing between the actuating member and the pivot pin shaft is adjustable, such that the pivot pin shaft or the actuat...