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:
Apr. 01, 2008
Filed:
Nov. 05, 2004
Wolfgang Arno Winkler, St. Georgen, DE;
Wolfgang Arno Winkler, St. Georgen, DE;
ebm-papst St. Georgen, GmbH & Co., KG, St. Georgen, DE;
Abstract
An improved fan useful for ventilating applications in motor vehicles features a modular structure, which facilitates quick replacement of any components likely to fail. A first module () is intended for permanent installation on the part that is to be cooled. A second module () is configured for quick engagement to and disengagement from the first module. The second module preferably comprises a hub (), an internal stator () mounted on the hub, and one or more struts () connecting the hub to a cylindrical casing part () which surrounds but is spaced from the outside of the fan wheel (). The struts form a lattice () which can be easily grasped for swapping out the second module when repair or replacement becomes necessary. The fan has a Hall sensor () and a control circuit () which regulates fan speed according to PWM (Pulse Width Modulation) or DC voltage signals () supplied from outside and has means () for generating a fault signal in the event of a fault state, and for sending the fault signal out on a control line ().