ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,767, issued on March 31, was assigned to Industrial Process Systems Inc. (Louisville, Ky.).
"Counterflow rotary cooler" was invented by Leonard A. "Lennie" Loesch (Naples, Fla.), John R. Brink (Goshen, Ky.) and Oscar Mathis III (Louisville, Ky.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A counterflow rotary cooler including an elongated rotary vessel having first and second ends, at least one inner tube nested inside one outer tube and defining an annulus space between said inner and outer tubes, with cooling water flowing from said first end to said second end through said annulus and then returning to said first end through the inner tube."
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