ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,838, issued on May 27, was assigned to Surelock McGill Ltd. (Wokingham, Great Britain).
"Bolting mechanism" was invented by John McGill (Wokingham, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bolting mechanism includes bolt members driven between extended and retracted configurations, a first drive train to couple motion of a handle to the members to drive them between configurations, a primary deadbolt mechanism to prevent the bolt members from being driven between configurations when the mechanism is in a locked state, the mechanism includes a fail-secure actuator that prevents the bolt members from being driven between configur...