ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,707, issued on Dec. 9, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).
"Impeller with variable backsweep angle" was invented by Vishnu Sishtla (Manlius, N.Y.) and Chaitanya Halbe (Liverpool, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is an impeller for a flow device. The impeller comprises a hub, and a plurality of blades extending radially outwards from the hub, wherein each of the blades is at least partially attached to an outer surface of the hub such that at least a portion of a tip end, opposite to the hub, of the corresponding blades remains unattached to the outer surface of the hub, wherein the unattached ...