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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 10239154 B1

PDFFull Text
Date of Patent:
Mar. 26, 2019

Filed:

Apr. 15, 2016

Laser welding method to weld two adjacent metal elements of a stator winding with rigid bars for an electric machine

Applicant:

Magneti Marelli S.p.a., Corbetta, IT;

Inventors:

Franco Ciampolini, Bologna, IT;

Marco Magri, Bologna, IT;

Assignee:

MAGNETI MARELLI S.p.A., Corbetta, IT;

Attorney:

Howard & Howard Attorneys PLLC

Primary Examiner:

Dana Ross

Assistant Examiner:

Kuangyue Chen

Int. Cl.
CPC ...
B23K 26/22 (2006.01); B23K 26/035 (2014.01); B23K 26/00 (2014.01); B23K 26/03 (2006.01); H02K 15/00 (2006.01); H02K 3/12 (2006.01); B23K 26/26 (2014.01); B23K 26/32 (2014.01); H02K 15/04 (2006.01); H02K 3/50 (2006.01); B23K 101/38 (2006.01); B23K 103/12 (2006.01);
U.S. Cl.
CPC ...
B23K 26/032 (2013.01); B23K 26/26 (2013.01); B23K 26/32 (2013.01); H02K 3/12 (2013.01); H02K 3/50 (2013.01); H02K 15/0081 (2013.01); H02K 15/0421 (2013.01); B23K 2101/38 (2018.08); B23K 2103/12 (2018.08); H02K 2203/09 (2013.01);
Abstract

A laser welding method to weld two adjacent metal elements of a stator winding with rigid bars for an electric machine; the two metal elements are arranged one beside the other and have respective upper surfaces, which are arranged coplanar to one another and have at least one common edge; in succession, in the direction of the upper surfaces of the two metal elements, a first laser beam is aimed, which is fed along a first welding line, which is perpendicular to the common edge and extends through the common edge itself, and then a second laser beam is aimed, which is fed along a second welding line, which is perpendicular to the common edge and extends through the common edge itself, is parallel to and spaced apart from the first line and has a length that is smaller than the one of the first line.

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