ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,199, issued on April 14, was assigned to Ningbo Eudemon Child Protective Equipment Co. Ltd. (Ningbo, China).
"Handle lock" was invented by Yingfeng Chen (Ningbo, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure provides a handle lock. The handle lock includes a lock seat and a lock bar movably arranged on the lock seat, and is characterized in that the lock bar and a pivoting surface of the lock seat are arranged at an acute angle to a fixed surface of the lock seat, and the lock bar rotates around a pivot axis as a rotating shaft to switch between a locked state and an unlocked state, therefore, the rotation form of the handle l...