ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,177, issued on Feb. 24, was assigned to MINETEK INVESTMENTS PTY LTD (New South Wales, Australia).
"Impeller for a duct" was invented by Johannes Petrus Van Der Walt (New South Wales, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "An impeller (20, 120) for a ducted fan arrangement (10, 110), the impeller (20, 120) including a hub (24, 124) and a plurality of blades (26, 126) extending radially from the hub (24, 124), each of the plurality of blades (26, 126) including a root (28, 128) proximate the hub (24, 124) and a tip (30, 130). A camber of each of the plurality of blades (26, 126) is arranged to flatten or reduce between the root (28, ...