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:
Feb. 14, 2006
Filed:
Aug. 13, 2001
Alexander Hahn, Sauldorf, DE;
Hermann Rappenecker, Vohrenbach, DE;
Alexander Hahn, Sauldorf, DE;
Hermann Rappenecker, Vohrenbach, DE;
ebm-papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
The invention relates to a fan arrangement comprising a radial or diagonal fan () with which a direct current motor () is associated as drive motor, further comprising a digital control element () such as a microcontroller or microprocessor, associated with that direct current motor (), and comprising a program, associated with that digital control element (), for controlling the current flowing through the direct current motor (), which program is embodied to generate a substantially constant current in the motor () in the working rotation speed range of the fan.