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:
Mar. 13, 2007
Filed:
Jul. 02, 2004
Wolfgang Arno Winkler, St. Georgen, DE;
Peter Metzger, Vs-Villingen, DE;
Wolfgang Arno Winkler, St. Georgen, DE;
Peter Metzger, Vs-Villingen, DE;
ebm-papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
A fan arrangement comprises a fan () having a fan housing () within which is arranged a blower wheel () which, in operation, moves air from an intake side of the fan () to a delivery side. Arranged radially outside the fan housing () is a surrounding mounting frame () that serves to support the fan housing (). A membrane (), made of an elastic material, elastically connects the fan housing () and mounting frame () to one another and is formed with through holes or apertures () that, in the event of a closure of the output or delivery side of the fan arrangement (), enable a return flow, from the delivery side to the intake side of the fan arrangement (), of air moved by the blower wheel ().