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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 12695349 B1

PDFFull Text
Date of Patent:
Jul. 28, 2026

Filed:

Jul. 13, 2022

Slotless stators and methods for manufacturing such stators

Applicant:

Maxon International Ag, Sachseln, CH;

Inventors:

Julien Baudey, Bonneville, FR;

Jens Schulze, Giswil, CH;

Andreas Stadelmann, Neudorf, CH;

Assignee:

MAXON INTERNATIONAL AG, Sachseln, CH;

Attorney:

Mannava & Kang, P.C.

Primary Examiner:

Rashad H Johnson

Int. Cl.
CPC ...
H02K 3/47 (2006.01); H02K 1/12 (2006.01); H02K 3/28 (2006.01); H02K 15/02 (2006.01); H02K 15/08 (2006.01); H02K 15/12 (2006.01); H02K 15/24 (2025.01);
U.S. Cl.
CPC ...
H02K 3/47 (2013.01); H02K 1/12 (2013.01); H02K 3/28 (2013.01); H02K 15/02 (2013.01); H02K 15/08 (2013.01); H02K 15/12 (2013.01); H02K 15/24 (2025.01); H02K 2213/03 (2013.01);
Abstract

A stator () for use in a slotless electric motor (), particularly an electronically commutated motor, has a winding body () in the form of a hollow cylinder, consisting of three or more coils (), and having a working section () located between two winding heads (') at two longitudinal ends of the winding body (), and a cylindrical stator lamination stack (), close-fittingly encompassing said working section () of the winding body (). The two winding heads () consist of the longitudinal ends () of the three or more coils (). They positively lock the stator lamination stack () along a longitudinal axis () of the winding body (). The two winding heads () have the shape of a circular flange with an inner radius (r) essentially equal to an inner radius (r) of the working section () of the winding body ().

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