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:
Jan. 11, 2022
Filed:
Jan. 15, 2020
Applicant:
Ebm-papst St. Georgen Gmbh & Co. KG, St. Georgen, DE;
Inventor:
Wolfgang Laufer, Aichhalden, DE;
Assignee:
ebm-papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/70 (2006.01); F04D 19/00 (2006.01); F04D 25/06 (2006.01); F04D 29/54 (2006.01); F04D 29/66 (2006.01); F04D 29/52 (2006.01); F04D 25/08 (2006.01); F04D 29/42 (2006.01);
U.S. Cl.
CPC ...
F04D 29/703 (2013.01); F04D 19/002 (2013.01); F04D 25/0613 (2013.01); F04D 25/0646 (2013.01); F04D 25/0693 (2013.01); F04D 25/08 (2013.01); F04D 29/4226 (2013.01); F04D 29/526 (2013.01); F04D 29/541 (2013.01); F04D 29/544 (2013.01); F04D 29/667 (2013.01);
Abstract
A housing () of a fan () has an inflow-side end surface (), an outflow-side end surface (), and a wall ring (). The wall ringextends in a direction of an axis () from one of the end surfaces () to the other () and adjoins a fan passage. A fan wheel () is arranged in the fan passage. A grid () is arranged on the inflow-side end surface (). The grid has a hub () positioned centrally in the fan passage. Primary struts () extend in the radial direction between the hub () and the edge of the fan passage. Secondary struts () intersect the primary struts ().