ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,681, issued on June 9, was assigned to Rock Fiber Inc. (Houston).
"High capacity bushing plate for producing igneous rock fibers" was invented by Oleksandr Biland (The Woodlands, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An inductively heated bushing box and fiber formation method for an igneous rock melting furnace. The bushing box includes side walls with a water cooling system surrounded by one or more induction coils for maintaining and even temperature distribution of melted charge before the melt is extruded through tips of a bushing plate. The bushing plate is offset from the bottom of the one or more induction coils to avoid end ef...