Invention Grant
- Patent Title: Vibration actuator suitable for use in magnetic field environment and medical system
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Application No.: US15168586Application Date: 2016-05-31
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Publication No.: US10363105B2Publication Date: 2019-07-30
- Inventor: Yasumichi Arimitsu
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JP2015-114697 20150605
- Main IPC: H01L41/04
- IPC: H01L41/04 ; H02N2/16 ; A61B34/30 ; H01L41/047 ; A61B90/00

Abstract:
In a vibration actuator suitable for use in a magnetic field environment, vibration is excited in a vibration element in pressure contact with a driven element, so as to cause relative movement of the driven element and the vibration element. The vibration element includes an elastic body, of which a main ingredient is electrically insulating, dielectric, or semi-conductive, and an electromechanical energy conversion element. A first electrode having an open loop structure is provided on a surface of a piezoelectric body of the electromechanical energy conversion element, through which surface the piezoelectric body is joined to the elastic body. Second electrodes are provided on the piezoelectric body in a manner opposed to the first electrode via the piezoelectric body. A conduction path electrically connects the first electrode and at least one of the second electrodes. A gap is formed between each of adjacent second electrodes.
Public/Granted literature
- US20160354167A1 VIBRATION ACTUATOR SUITABLE FOR USE IN MAGNETIC FIELD ENVIRONMENT AND MEDICAL SYSTEM Public/Granted day:2016-12-08
Information query
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