ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,008, issued on March 18, was assigned to Hamilton Sundstrand Corp. (Charlotte, N.C.).
"Integrated two-stage impeller" was invented by Alden Lee Winn (Glastonbury, Conn.) and Andrew W. Solomon (Windsor, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An impeller includes a cylindrical portion defining a fluid inlet, the cylindrical portion coaxial with a rotational axis of the impeller, a hub, a shroud extending downward and radially away from the cylindrical portion and covering the hub, a first plurality of vanes extending between the shroud and the hub, and an extension portion disposed between the shroud and the hub and downstream of the fi...