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. 31, 2012
Filed:
Oct. 01, 2005
Wolfgang Arno Winkler, St. Georgen, DE;
Wolfgang Arno Winkler, St. Georgen, DE;
EBM-Papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
A fan for cooling a circuit board () has a fan wheel (') that is adapted for rotation about a rotation axis () and in a predetermined rotation direction (), and an outer wall () that is rigidly joined to an inner wall (). Defined between the two walls () are curved air-directing conduits () that extend from an axial air entrance opening () to a radial air exit opening (). The axial air entrance opening () is at a lesser distance from the rotation axis than the radial air exit opening (), and the air-directing conduits () are separated from one another by air-directing blades () that each extend, oppositely to the predetermined rotation direction (), from a point between two adjacent air entrance openings () to a point between two adjacent air exit openings ().