ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,388, issued on Sept. 23, was assigned to SHIN YING ENTPR Co. LTD. (Taichung, Taiwan).
"Magnetic driving device" was invented by Wen-Hung Chiang (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetic driving device is provided, including: a sleeving rod, including a connection hole and a receiving hole in communication with the connection hole which are disposed at one end of the sleeving rod, the connection hole being configured to receive a workpiece, a first groove being disposed on a hole wall of the receiving hole; a movable member, received in the receiving hole, including a magnetic end portion and a second groove; a reta...