Invention Grant
- Patent Title: Linear motor, magnet unit, and stage device
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Application No.: US15043948Application Date: 2016-02-15
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Publication No.: US10381911B2Publication Date: 2019-08-13
- Inventor: Doutaro Usui
- Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
- Current Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Hea Law PLLC
- Priority: JP2015-028193 20150217
- Main IPC: H02K41/03
- IPC: H02K41/03 ; H02K1/17

Abstract:
A linear motor includes a movable element and a stator. The stator includes a pair of back yokes provided opposing each other such as to flank the movable element along a direction perpendicular to the movable element's axis of travel, a plurality of main pole magnets provided spaced apart from each other and paralleling the axis of travel, on respective inside lateral surfaces of the pair of back yokes, and first and second interpole magnets provided, adjoining along said axis of travel, in each of intervals between adjoining couples of the main pole magnets.
Public/Granted literature
- US20160241120A1 LINEAR MOTOR, MAGNET UNIT, AND STAGE DEVICE Public/Granted day:2016-08-18
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