Invention Grant
- Patent Title: High force and low noise linear fine-tooth motor
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Application No.: US16341759Application Date: 2017-11-30
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Publication No.: US11296587B2Publication Date: 2022-04-05
- Inventor: David L. Trumper , Jun Young Yoon
- Applicant: Massachusetts Institute of Technology
- Applicant Address: US MA Cambridge
- Assignee: Massachusetts Institute of Technology
- Current Assignee: Massachusetts Institute of Technology
- Current Assignee Address: US MA Cambridge
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- International Application: PCT/US2017/063980 WO 20171130
- International Announcement: WO2018/102561 WO 20180607
- Main IPC: H02K41/03
- IPC: H02K41/03 ; H02K1/34 ; H02K3/28 ; H02K7/08

Abstract:
High force and low noise linear fine-tooth motors are described herein. Such motors can include armatures having fine teeth separated by narrow slots such that a ratio of a pitch between teeth and a pitch between permanent magnet poles is less than that of a conventional iron-core linear motor. In one embodiment, such a linear motor can include a first component having an armature including a plurality of iron cores surrounded by coil windings, and a second component having a plurality of permanent magnets with alternating polarity. The plurality of iron cores can be spaced apart from one another by an iron core pitch distance and the plurality of permanent magnets can be spaced apart from one another by a permanent magnet pole pitch distance, and a ratio of the iron core pitch to the magnetic pole pitch can be less than 1.33.
Public/Granted literature
- US20200266692A1 High Force And Low Noise Linear Fine-Tooth Motor Public/Granted day:2020-08-20
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