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:
Oct. 31, 2017
Filed:
Dec. 20, 2012
Applicant:
Ebm-papst St. Georgen Gmbh & Co. KG, St. Georgen, DE;
Inventors:
Peter Ragg, Schoenwald, DE;
Michael Stadler, Graz, AT;
Assignee:
EBM-PAPST ST. GEORGEN GmbH & Co. KG, St. Georgen, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); F04D 29/68 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); F04D 29/681 (2013.01); F05D 2240/306 (2013.01); Y02E 10/721 (2013.01);
Abstract
An axial- or diagonal-fan has a fan wheel () having profiled rotor blades (). Each blade has a suction or intake side (), a portion located forward, with respect to the rotation direction (), and having a leading edge (), and a portion located rearward, with respect to the rotation direction (), and having a trailing edge (). Between said portions, on the intake side () of the respective rotor blade (), a trip or separation edge () is provided, said trip edge having an S-shaped contour in a meridian cross-section.