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.

Date of Patent:
Jul. 15, 2025

Filed:

Mar. 29, 2022
Applicant:

Sumitomo Heavy Industries, Ltd., Tokyo, JP;

Inventors:

Yuta Ebara, Kanagawa, JP;

Jyun Yoshida, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61N 5/10 (2006.01); H01F 6/06 (2006.01);
U.S. Cl.
CPC ...
A61N 5/1048 (2013.01); H01F 6/06 (2013.01); A61N 2005/1087 (2013.01); A61N 2005/1089 (2013.01);
Abstract

In a case where a start current value is higher than a target current value, a control unit performs a control to lower a current value from the start current value to the target current value. In addition, in a case where the start current value is equal to or lower than the target current value, the control unit controls to raise the current value from the start current value to the format current value higher than the target current value, and then lower the current value to the target current value. In this manner, regardless of the value of the predetermined current value before the current value is changed, the current value reaches the target current value in a descending manner. As a result, the coil magnetization magnetic field when the target current value is reached can be kept in the same state.


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