ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,511, issued on March 24.
"Locking device" was invented by Peter McLoughlin (Swalcliffe, Great Britain) and John McLoughlin (Tyldesley, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A locking washer for use with a screw-threaded fastener (71), said locking device comprising a first disc-like body (12) comprising an annular portion (13) with at least one aperture (15) therein and a central through-hole (14) e.g. a washer having notches (15) open to the outer or inner periphery and at least one further body (25) held in said one aperture (15). The further body may be a shim (22) also having a central hole (24) and at least one tab (25) ...