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. 16, 2024
Filed:
Apr. 30, 2020
Festool Gmbh, Wendlingen, DE;
Volker Barth, Aichwald, DE;
Patrick Schön, Wendlingen, DE;
FESTOOL GMBH, Wendlingen, DE;
Abstract
A drive motor for a suction device () or a machine tool in the form of a hand-held power tool () or a semi-stationary machine tool. The drive motor () has a stator () with an excitation coil assembly () and a rotor () with a motor shaft () which is rotatably mounted about a rotational axis (D) on the stator or relative to the stator () by means of a bearing assembly (A) and which passes through a shaft through-opening () of a laminated core () held on the motor shaft (). The rotor () has a magnet assembly () with at least one permanent magnet such that the rotor () can be rotated about the rotational axis (D) by energizing the excitation coil assembly (). The laminated core () has at least one balancing section () produced by removing material from or notching the laminated core (), and/or the at least one permanent magnet is formed by a magnet body () which is magnetized when arranged on the laminated core ().