Invention Grant
- Patent Title: Electric motor device
- Patent Title (中): 电动马达装置
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Application No.: US12270930Application Date: 2008-11-14
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Publication No.: US07948141B2Publication Date: 2011-05-24
- Inventor: Kesatoshi Takeuchi
- Applicant: Kesatoshi Takeuchi
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2007-302854 20071122; JP2008-102483 20080410
- Main IPC: H02K1/00
- IPC: H02K1/00
Abstract:
The electric motor device is provided. The electric motor device includes: a first drive member that has a plurality of permanent magnets; a second drive member that has a plurality of electromagnetic coils; and a clearance controller that shifts at least either one of the first drive member and the second drive member, thereby changing a size of a clearance formed between the first drive member and the second drive member.
Public/Granted literature
- US20090134723A1 ELECTRIC MOTOR DEVICE Public/Granted day:2009-05-28
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