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:
Nov. 07, 2017
Filed:
Sep. 10, 2014
Applicant:
Punker Gmbh, Eckernförde, DE;
Inventors:
Henning Bähren, Lübeck, DE;
Christian Hornhardt, Dänischenhagen, DE;
Matthias Wolf, Kiel, DE;
Yingan Xia, Rieseby, DE;
Assignee:
Punker GmbH, Eckernförde, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/28 (2006.01); F04D 29/30 (2006.01);
U.S. Cl.
CPC ...
F04D 29/283 (2013.01); F04D 29/281 (2013.01); F04D 29/30 (2013.01);
Abstract
A fan impeller for the conveyance of a gaseous fluid includes several blades arranged with constant angular spacing around a rotation axis. At least one blade has a boundary zone and an inner zone, together with a bead extending between them along a curved path and/or the boundary zone is determined by a first blade surface and the inner zone is determined by a second blade surface, which are arranged with varying geometry.