Invention Grant
- Patent Title: Multilayer disk drive motors having out-of-plane bending
- Patent Title (中): 具有平面外弯曲的多层磁盘驱动电机
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Application No.: US15071762Application Date: 2016-03-16
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Publication No.: US09564154B2Publication Date: 2017-02-07
- Inventor: Jacob D. Bjorstrom , Ryan N. Ruzicka , Joseph C. Wheatley
- Applicant: Hutchinson Technology Incorporated
- Applicant Address: US MN Hutchinson
- Assignee: Hutchinson Technology Incorporated
- Current Assignee: Hutchinson Technology Incorporated
- Current Assignee Address: US MN Hutchinson
- Main IPC: G11B5/48
- IPC: G11B5/48

Abstract:
Various embodiments concern a gimbaled flexure having a dual stage actuation structure. The flexure comprises a gimbal on which a motor is mounted. The motor comprises a first and second terminals and a plurality of actuator layers formed from a piezoelectric material. The plurality of actuator layers comprise serially stacked first, second, and third actuator layers. The plurality of actuator layers are respectively poled and connected to the first and second terminals such that both of the first and second actuator layers expand while the third actuator layer contracts in response to application of a signal across the first and second terminals. The differential motion of the plurality of layers in the motor cause the motor to curl about the contracting third actuator layer. The curling motion causes a portion of the flexure to preferentially curl.
Public/Granted literature
- US20160196843A1 MULTILAYER DISK DRIVE MOTORS HAVING OUT-OF-PLANE BENDING Public/Granted day:2016-07-07
Information query
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