ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,750, issued on Nov. 18, was assigned to WENZHOU JINJIAN SMART LOCK Co. LTD (Wenzhou, China).
"Password-retrieving apparatus for coded lock" was invented by Ren Tang (Wenzhou, China) and Zhimin Ye (Wenzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Password-retrieving-apparatus for coded lock, a movable adjusting rod is arranged in the lock body; a small spring is arranged between the adjusting rod and a lock cover; the adjusting rod is provided with a protruding point; an inner wheel is provided with an avoidance clamping slot and a limit; a lock cylinder is driven to rotate under the rotation of a spare key; the lock cylinder is engaged ...