ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,082, issued on Jan. 27, was assigned to ZEHNDER GROUP INTERNATIONAL AG (Granichen, Switzerland).
"Centrifugal fan arrangement" was invented by Martijn Haddeman (Epe, Netherlands), Eric Arends (Zwolle, Netherlands) and Rene Brink ('t Harde, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A centrifugal fan arrangement includes a centrifugal fan rotatably mounted within a scroll housing and a plurality of circumferentially spaced fan blades fixed to a central fan axle extending along an axial direction and/or to a circumferential fan ring extending in a plane orthogonal to an axial direction. The scroll housing includes a housing main portio...