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:
Dec. 03, 2019
Filed:
Apr. 16, 2015
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Thomas Schencke, Langewiesen, DE;
Thomas Pfund, Leiberstung, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A dynamoelectric permanently excited machine having the possibility of mechanical field weakening. The machine includes a stator (), a rotor () spaced apart from the stator () by an air gap (), permanent magnets () arranged on the rotor () for generating an excitation field in the air gap (), and a centrifugal-force-controlled field-weakening mechanism for weakening the excitation field in the air gap () in accordance with rotational speed. In order to increase the operational safety of systems that are driven by such a machine, the machine also includes a signal input for a fault signal and an actuator for controlling the field-weakening mechanism independently of rotational speed.