ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,141, issued on Dec. 16, was assigned to National Presto Industries Inc. (Eau Claire, Wis.).
"Tiltable radiant heater" was invented by Charles F. Caldwell (Eau Claire, Wis.) and Brian Ruben (Eau Claire, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a portable radiant heating device that has a base, a radiant heat source mounted in a tiltable reflector, and a safety interlock device located in the base. The safety interlock uses a pressure-sensitive foot that prevents the heater from producing infrared heat when not in contact with a mounting surface. The safety interlock device also prevents the heater from producing infrared heat ...