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. 02, 2024
Filed:
Jun. 17, 2020
Applicant:
Ziehl-abegg SE, Künzelsau, DE;
Inventor:
Frieder Loercher, Braunsbach, DE;
Assignee:
ZIEHL-ABEGG SE, Kunzelsau, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/42 (2006.01);
U.S. Cl.
CPC ...
F04D 29/4226 (2013.01); F04D 29/422 (2013.01);
Abstract
A fan with an impeller having, in an embodiment, backward-curved blades and having a scroll housing, the flow channel of which is formed by an inner spiral contour of the housing, the flow channel guiding the air conveyed by the impeller towards an outlet wherein the spiral contour with its local pitch angles is adapted to the outlet angle from the impeller.