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:
May. 08, 2018
Filed:
May. 24, 2013
Entec Electric and Electronic Co., Ltd., Gyeonggi-do, KR;
Young Bong Bang, Seoul, KR;
Chang Hyuk Lee, Seoul, KR;
Ji Won Choi, Gyeonggi-do, KR;
Young Il Kim, Gyeonggi-do, KR;
Heung Ryeol Koh, Gyeonggi-do, KR;
Myeong Seob Choi, Gyeonggi-do, KR;
Entec Electric and Electronic Co., Ltd., Hwaseong, KR;
Abstract
The disclosure relates to a permanent magnet actuator comprising: a stator iron core having a space therein-side, and having a first wall and a second wall opposing the first wall; a movable element moving reciprocally between the first wall and the second wall, along a moving axis which connects the first wall and the second wall inside the space; a first magnetomotive force supplying body and a second magnetomotive force supplying body disposed respectively on the first wall and the second wall, so as to supply a magnetomotive force to the movable element for the reciprocal movement thereof, wherein, at least one of the first magnetomotive force supplying body and the second magnetomotive force supplying body selectively produces a bidirectional magnetomotive force; a permanent magnet disposed between the first magnetomotive force supplying body and the second magnetomotive force supplying body, and providing a coercive force to the movable element for maintaining the state thereof; and a driving circuit comprising a control unit for controlling a voltage or current that is supplied to the first magnetomotive force supplying body and the second magnetomotive force supplying body.