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. 28, 2008
Filed:
Oct. 19, 2005
Applicants:
Alexander Hahn, Sauldorf, DE;
Hermann Rappenecker, Vöhrenbach, DE;
Inventors:
Alexander Hahn, Sauldorf, DE;
Hermann Rappenecker, Vöhrenbach, DE;
Assignee:
ebm papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Primary Examiner:
Int. Cl.
CPC ...
H02P 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved fan arrangement features a radial or diagonal fan () with which a direct current motor () is associated as its drive motor, further comprising a digital control element () which executes a program, for controlling the current flowing through the direct current motor (), which program is so configured that it applies a substantially constant current in the motor () in the working rotation speed range of the fan.