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. 09, 2004
Filed:
Oct. 28, 2002
Thomas Märländer, Oberndorf, DE;
Christof Huonker, Villingen-Schwenningen, DE;
Andreas Kienzler, Villingen-Schwenningen, DE;
Verax Ventilatoren GmbH, , DE;
Abstract
The invention relates to a blower, especially for a personal computer. The air of the invention is to reduce the noise produces by such a blower. To this end, the inventive blower comprises: a) a blower housing ( ) including a guide surface ( ) that defines the exterior limits of a flow channel ( ); b) a hub ( ) that is mounted in the blower housing ( ) so as to be rotatable about an axis of rotation ( ) and having a hub surface ( ) that defines the interior limits of the flow channel ( ); c) a rotary drive ( ) for the hub ( ) which is disposed within the hub ( ); d) the blades ( ) of the hub ( ) are asymmetrically distributed about the periphery of the hub ( ) and are configured as radial blades; and e) the guide surface ( ) and the hub ( ), in the blade zone between the leading edge ( ) of the blade and the trailing edge ( ) of the blade, when looked at in the direction of flow, have a generally conical or slightly curved and widening shape, and the area of cross-section of flow along the flow channel ( ) remains constant or is reduced.