ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,257, issued on May 26.
"Quick opening and closing container stopper" was invented by Dongfeng Xu (Quzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to the field of bottle stopper devices, and in particular, to a quick opening and closing container stopper, which includes a fixed shell and a movable stopper body. The fixed shell is provided with a dodging opening. The movable stopper body is provided with a limiting plate. An elastic sealing sleeve abuts against and between the limiting plate and the fixed shell. A knob is rotatably connected to the movable stopper body. The knob includes a side lug. When the ...