ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,049, issued on Sept. 23, was assigned to DALE HOLDINGS (PTY) LTD (Cosmo, South Africa).

"Support link for a conveyor belt" was invented by Christopher Dale (Pretoria, South Africa), Francois Kriel (Johannesburg) and Lyle Ramsay (Centurion, South Africa).

According to the abstract* released by the U.S. Patent & Trademark Office: "A support link for a self-stacking spiral conveyor belt, which includes a carrier on which a self-stacking spiral conveyor belt is supportable, a set of orthogonally arranged rolling elements connected to the carrier, in use to guide the carrier along a conveyor path and an interlink mountable onto the carrier. The interlink is connectable to a matched i...