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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.:

US 11374451 B1

PDFFull Text
Date of Patent:
Jun. 28, 2022

Filed:

Jul. 05, 2019

Rotor assembly for electric motor

Applicant:

Johnson Electric International Ag, Murten, CH;

Inventors:

Yvan Bourqui, Corminboeuf, CH;

Daniel Soncini, Fribourg, CH;

Bruno Neuhaus, Wallenried, CH;

Assignee:

JOHNSON ELECTRIC INTERNATIONAL AG, Murten, CH;

Attorney:

Millman IP Inc.

Primary Examiner:

Jose A Gonzalez Quinones

Int. Cl.
CPC ...
H02K 1/30 (2006.01); H02K 1/02 (2006.01); H02K 1/24 (2006.01); H02K 7/00 (2006.01); H02K 7/116 (2006.01); H02K 15/02 (2006.01); H02K 15/12 (2006.01); H02K 37/04 (2006.01); H02K 37/24 (2006.01); F16H 55/17 (2006.01); F16H 57/00 (2012.01); B29C 45/14 (2006.01); B29L 31/00 (2006.01); B29K 77/00 (2006.01); B29K 705/12 (2006.01);
U.S. Cl.
CPC ...
H02K 1/30 (2013.01); B29C 45/14467 (2013.01); F16H 55/17 (2013.01); F16H 57/0018 (2013.01); H02K 1/02 (2013.01); H02K 1/246 (2013.01); H02K 7/003 (2013.01); H02K 7/116 (2013.01); H02K 15/022 (2013.01); H02K 15/12 (2013.01); H02K 37/04 (2013.01); H02K 37/24 (2013.01); B29K 2077/00 (2013.01); B29K 2705/12 (2013.01); B29L 2031/7498 (2013.01);
Abstract

A rotor assembly is provided for an electric motor. The rotor assembly includes: a cylindrical magnet member having magnetization in both axial and radial directions, the magnet member being formed from a moldable magnetic material; and an output shaft receivable within the magnet member. An inner surface of the magnet member and an outer surface of the output shaft have complementarily-engagable interface elements thereon to prevent or limit dislocation of the magnet member and output shaft, and at least one of the interface elements is formed by overmolding of the magnet member and output shaft with the other of magnet member and output shaft.

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