ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,872, issued on Dec. 9, was assigned to HELICAL ENERGY INC. (Overland Park, Kan.).
"Heat exchange unit" was invented by Mark Wickham (Avening, Great Britain) and Christopher Wickham (Mortlake, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a heat exchange unit (1) for recovering heat energy from a hot gas, the heat exchange unit comprising an inlet duct (11) for receiving the hot gas, a heat exchange duct (22) having a heat exchanger (25) for recovering heat from the hot gas, and a bypass duct (24) which bypasses the heat exchange duct and the heat exchanger, wherein the heat exchange unit further comprises a damper (30...