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:
Sep. 16, 2014
Filed:
Feb. 05, 2010
Klaus Büttner, Hollstadt, DE;
Jens Kurth, Unsleben, DE;
Michael Müller, Bad Kissingen, DE;
Norbert Wöhner, Heustreu, DE;
Klaus Büttner, Hollstadt, DE;
Jens Kurth, Unsleben, DE;
Michael Müller, Bad Kissingen, DE;
Norbert Wöhner, Heustreu, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
The invention relates to a squirrel-cage rotor for an asynchronous machine. In order to increase the electrical efficiency for a cage rotor composed of two materials, the cage rotor comprises a rotor core () having grooves (), end rings () of a first material that are cast onto the rotor core on the end face, and conductors () that are arranged in the grooves and that are made of a second material that has an electric conductivity that is higher than the electric conductivity of the first material, wherein the conductors () comprise a coating () made of a coating material on the surface of the conductors, wherein the coating adjoins the second material of the conductors () by means of a first alloy layer () made of the second material and the coating material and adjoins the cast first material by means of a second alloy layer (); made of the first material and the coating material.