The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2026
Filed:
Nov. 28, 2022
Applicant:
Ziehl-abegg SE, Künzelsau, DE;
Inventors:
Frieder Loercher, Braunsbach, DE;
Sandra Hub, Pfedelbach, DE;
Assignee:
ZIEHL-ABEGG SE, Künzelsau, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/32 (2006.01); F04D 25/06 (2006.01); F04D 29/26 (2006.01); F04D 29/28 (2006.01); F04D 29/64 (2006.01);
U.S. Cl.
CPC ...
F04D 29/329 (2013.01); F04D 25/0606 (2013.01); F04D 25/0613 (2013.01); F04D 29/263 (2013.01); F04D 29/281 (2013.01); F04D 29/646 (2013.01);
Abstract
An axial, diagonal or radial fan having an impeller driven by an electric external rotor motor, wherein the impeller comprises a hub ring carrying blades and which is connected in a rotationally fixed manner to the rotor, and wherein a hub contour is provided on the inflow side on the hub ring, which hub contour has a flow-guiding outer surface and a central opening adjoining the outer surface radially inwards with an inner surface directed towards the rotor.