ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,793, issued on March 3.
"Bathroom lock structure" was invented by Qiang Chen (Zhongshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bathroom lock structure is provided, which includes an outdoor handle and an indoor handle. The indoor handle is provided with a knob with a spiral groove, a deblocking button in the indoor handle can be slid to cause a column on the deblocking button to be clamped in the spiral groove, a safety rod located in a first square hole within in the knob is driven to rotate. A locking cam in a shielding cover on the outdoor handle is driven to rotate by a rotation of the safety rod, thereby achieving locking or un...