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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 9531223 B1

PDFFull Text
Date of Patent:
Dec. 27, 2016

Filed:

Mar. 13, 2013

Method for manufacturing stack of laminations

Applicant:

Kienle + Spiess Gmbh, Sachsenheim, DE;

Inventors:

Daniel Blocher, Pürgen, DE;

Steffen Bauer, Zaberfeld, DE;

Andras Bardos, Heiligenhaus, DE;

Assignee:

Kienle + Spiess GmbH, Sachsenheim, DE;

Attorney:

Gudrun E. Huckett

Primary Examiner:

Thiem Phan

Int. Cl.
CPC ...
H01F 3/04 (2006.01); H01F 7/06 (2006.01); H02K 1/18 (2006.01); H02K 15/02 (2006.01); B21D 28/02 (2006.01); H01F 3/02 (2006.01); H01F 41/02 (2006.01); B32B 7/14 (2006.01); B32B 27/30 (2006.01); B32B 27/38 (2006.01); B32B 27/40 (2006.01); B32B 37/12 (2006.01); B32B 38/00 (2006.01); H02K 1/28 (2006.01); C08G 59/40 (2006.01); C09J 163/00 (2006.01);
U.S. Cl.
CPC ...
H02K 1/18 (2013.01); B21D 28/02 (2013.01); B32B 7/14 (2013.01); B32B 27/308 (2013.01); B32B 27/38 (2013.01); B32B 27/40 (2013.01); B32B 37/1284 (2013.01); B32B 37/1292 (2013.01); B32B 38/0036 (2013.01); H01F 3/02 (2013.01); H01F 41/0233 (2013.01); H02K 1/28 (2013.01); H02K 15/02 (2013.01); B32B 2037/1253 (2013.01); B32B 2457/00 (2013.01); C08G 59/4042 (2013.01); C09J 163/00 (2013.01); Y10T 29/49078 (2015.01); Y10T 428/31515 (2015.04); Y10T 428/31551 (2015.04); Y10T 428/31938 (2015.04);
Abstract

The stack of laminations consists of punched laminations (), which are bonded together by an adhesive agent. The adhesive agent is composed of an adhesive () and an initiator (), which consists of methacrylates, derivative imines and methacrylic esters. The completely cured adhesive bond has long-term resistance when exposed to a temperature of at least over 80° C. The adhesive () is applied over the full surface area and in a contacting manner to one side of the lamination () and the initiator () is applied to the same side and/or to the other side of the lamination (). The initiator () reacts with the adhesive () when contact is made and establishes the adhesive connection between laminations () lying against one another. The adhesive agent may, however, also be an adhesive () that cures by itself when heat is applied.

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