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:
Jul. 03, 2012
Filed:
Dec. 02, 2008
Vladimir V. Popov, Villingen-Schwenningen, DE;
Martin Bauer, Villingen-Schwenningen, DE;
Guido Schmid, Triberg, DE;
Stefan Schwamberger, Hermsdorf, DE;
Vladimir V. Popov, Villingen-Schwenningen, DE;
Martin Bauer, Villingen-Schwenningen, DE;
Guido Schmid, Triberg, DE;
Stefan Schwamberger, Hermsdorf, DE;
Minebea Co., Ltd., Nagano-ken, JP;
Abstract
The invention relates to a magnetic axial bearing for taking up axial forces that act on a rotor component that is rotatably supported about a rotational axis with respect to a stator component. The bearing comprises a first bearing part consisting of at least one permanent magnet and at least two flux guide elements associated with the permanent magnet that are disposed on opposing end faces of the permanent magnet and aligned substantially radial and perpendicular to the rotational axis, and a second bearing part consisting of at least two flux guide elements that are disposed at a mutual spacing to one another and aligned substantially radial and perpendicular to the rotational axis, each flux guide element of the second bearing part being associated with a flux guide element of the first bearing part and lying directly opposite the latter in a radial direction and separated from it by an air gap. The invention further describes a spindle motor having a magnetic axial bearing of this kind, used, for example, for driving a hard disk drive.