ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,045, issued on Nov. 18, was assigned to Zippo Manufacturing Co. (Bradford, Pa.).
"Burn control apparatus for solid fuel" was invented by William Eugene Rabbitt (Chesterland, Ohio) and Robert F. Soreo (Cleveland Heights, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus in which a solid fuel mass is burned controls the burn rate to slow the burning process and extend the lifespan of the solid fuel mass. The apparatus has a base cup configured to receive a lower portion of the solid fuel mass, and a descent cup configured to receive an upper portion of the solid fuel mass, wherein the descent cup includes a flame orifice. The descent cu...