ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,261, issued on July 8.
"Miniature vacuum pump and miniature vacuum device" was invented by Baifeng Li (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A miniature vacuum pump includes a collection and exhaust chamber, a driving motor, and a vacuum breaking assembly including an inlet hole extending through a bottom wall of the collection and exhaust chamber, a pressure plate movably fitting about the output shaft located in the collection and exhaust chamber and flexibly covering the inlet hole, a rotation member coaxially and fixedly mounted to the output shaft and located at a side of the pressure plate opposite to the bottom wall an...