ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,810, issued on June 17, was assigned to EASY LOCK Co. LTD. (Ansan-si, South Korea) and Yong Tae IM (Gapyeong-gun, South Korea).
"Safety shackle" was invented by Yong Tae Im (Gapyeong-gun, South Korea) and Young Sung Lee (Goseong-gun, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A safety shackle comprising a first safety hook mechanism including a pair of first safety hooks having first fixing latches which are inserted into or separated from a locking groove of a first pin end portion positioned in a first through hole of a first body end portion as first hook bodies are coupled to the first body end portion by first hinge shafts and r...