US Patent Issued to I-TEK METAL on July 21 for "Heavy duty lock" (Taiwanese Inventor)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,039, issued on July 21, was assigned to I-TEK METAL MFG. Co. LTD. (Tainan, Taiwan).

"Heavy duty lock" was invented by Tsung-Yu Huang (Tainan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heavy duty lock is mounted on a door and includes a latch, an anti-theft latch, and a stop-latch. When the door is in an open position, the stop-latch is in an extended position, such that the anti-theft latch cannot move toward an anti-theft position. When the door pivots to a closed position, the stop-latch moves to a retracted position, and the anti-theft control member moves to the anti-theft position. When the latch moves to an unlatching position th...