ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,785, issued on March 25.
"Code changing structure applied to key coded lock" was invented by Yijian Li (Fujian, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A code changing structure for a key coded lock, including a lock base, a push rod, locking pieces, a knob, a linkage assembly, a position resetting assembly, and corresponding key springs, password keys, button springs and buttons. A press-rotating mechanism operable below a code changing height is provided between the buttons and key slots. When a correct password is entered, the knob rotate to a first angle or a second angle. When the knob rotates to the first angle, the key coded loc...