ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,974, issued on March 17, was assigned to Southco Manufacturing and Technology (Shenzhen) Co. Ltd. (Shenzhen, China).
"Locking device" was invented by Jingyao Peng (Shenzhen, China) and Jack Hu (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses a locking device including: a mounting seat; a locking member, rotatable around an axial direction and movable in the axial direction, when the locking member is in a first axial position and a first rotational position, the locking member is retracted into the mounting seat along the axial direction, and the mounting seat prevents the locking member from rotatin...