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:
Mar. 20, 2018
Filed:
May. 22, 2017
Applicant:
Minebea Co., Ltd., Kitasaku-gun, Nagano, JP;
Inventor:
Takaaki Ochiai, Yachimata, JP;
Assignee:
Minebea Co., Ltd., Kitasaku-gun, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 15/02 (2006.01); H02K 1/24 (2006.01); G01D 5/20 (2006.01);
U.S. Cl.
CPC ...
H02K 15/022 (2013.01); G01D 5/2046 (2013.01); H02K 1/246 (2013.01); Y10T 29/4902 (2015.01);
Abstract
A production method for a rotor core for a VR type resolver has a structure in which one protrusion is formed on an inner edge thereof in which the rotor cores can be rotated and laminated without increasing cost. In a production method of a rotor core for a VR type resolver, a plurality of tabular rotor core pieces are laminated. In this case, in the rotor core pieces, four protrusions are simultaneously formed, one of them is left, the remainder thereof is removed, and rotating lamination is carried out.