ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,273, issued on Feb. 24, was assigned to ANDRITZ Metals Germany GmbH (Hemer, Germany).
"Insulating concrete shell" was invented by Dankmar Taets von Amerongen (Ludenscheid, Germany), Boris Kofmann (Krefeld, Germany) and Gerhard Schlich (Essen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An insulating concrete shell made of refractory cast concrete or refractory tamped concrete for insulating uprights or supporting tubes in a walking beam furnace or pusher-type furnace. The insulating concrete shell is shell-shaped and has a sheet metal strip on the inner side at each end, with which the insulating concrete shell can be fastened to an uprig...