Invention Grant
US08416523B2 Disk drive device with versatile shaped core for rotating a disk
失效
磁盘驱动装置，具有用于旋转磁盘的通用型芯
- Patent Title: Disk drive device with versatile shaped core for rotating a disk
- Patent Title (中): 磁盘驱动装置，具有用于旋转磁盘的通用型芯
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Application No.: US12959999Application Date: 2010-12-03
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Publication No.: US08416523B2Publication Date: 2013-04-09
- Inventor: Tomoyuki Tashiro
- Applicant: Tomoyuki Tashiro
- Applicant Address: JP Shizuoka
- Assignee: Alphana Technology Co., Ltd.
- Current Assignee: Alphana Technology Co., Ltd.
- Current Assignee Address: JP Shizuoka
- Agency: Fulwider Patton LLP
- Priority: JP2010-008983 20100119
- Main IPC: G11B17/02
- IPC: G11B17/02 ; H02K1/06
Abstract:
A disk drive device comprises a hub on which a magnetic recording disk is to be mounted; a base rotatably supporting the hub through a bearing unit; a sintered core fixed to the base, the sintered core having a ring portion and nine teeth that extend radially from the ring portion; coils wound around nine teeth; and a cylindrical magnet fixed to the hub. The sintered core is formed by heat-treating an iron powder. At least one of (a) the surfaces of particles of the iron powder and (b) the surfaces of the sintered core is insulated.
Public/Granted literature
- US20110176240A1 DISK DRIVE DEVICE THAT ROTATES A DISK Public/Granted day:2011-07-21
Information query
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