ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,120, issued on Nov. 18, was assigned to Evapco Inc. (Taneytown, Md.).

"Induced draft heat rejection equipment with top mounted backward-curved centrifugal fans" was invented by Scott Nevins (Taneytown, Md.), Rob Vandenboer (Taneytown, Md.) and Jeffrey Luke Herwig (Taneytown, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Heat rejection devices, including cooling towers, condensers and closed circuit coolers, having side-mounted backward-curved centrifugal fans mounted on top of the device, above a fan plenum instead of a top-mounted axial fan. Heat rejection capability can be easily modified by adding or subtracting fans without impacting unit f...