Piezoelectric driving device for motor, motor, robot, and pump
US-2016365809-A1 · Dec 15, 2016 · US
Transducer for ultrasonic motor
US9099640B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9099640-B2 |
| Application number | US-201113575544-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 26, 2011 |
| Priority date | Jan 27, 2010 |
| Publication date | Aug 4, 2015 |
| Grant date | Aug 4, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
Electrodes ( 7, 8, 9 ), having curved sections in the shape of the outline thereof, are disposed in areas of a rectangular plate-shaped piezoelectric transducer element ( 1 ) in which the strain in the natural mode of vibration is large. The electrodes ( 7, 8 ) which excite a bending vibration are disposed in areas in which the strain in the bending natural mode is at least a predetermined value, and the outline curved sections of the electrodes ( 7, 8 ) are shaped so as to follow along strain contours ( 3, 4 ), and the electrode ( 9 ) which excites a stretching vibration is disposed in an area in which the strain in the stretching natural mode is at least a predetermined value, thus providing a transducer for an ultrasonic motor which aims to reduce transducer loss (increasing vibration efficiency), and improve transducer durability and reliability.
First claim
Opening claim text (preview).
The invention claimed is: 1. A transducer for an ultrasonic motor comprising an electrode having an outline shape including a curved section provided on a rectangular plate-like piezoelectric vibration element, wherein an electrode for exciting bending vibration and an electrode for exciting stretching vibration are disposed separately such that the bending vibration and the stretching vibration are excited independently of each other, and wherein the electrode for exciting bend…
Assignees
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Classifications
Electricity · mapped topic
- H02N2/004Primary
Electricity · mapped topic
- H01L41/0913Primary
Electricity · mapped topic
Electricity · mapped topic
- H10N30/2023Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9099640B2 cover?
- Electrodes ( 7, 8, 9 ), having curved sections in the shape of the outline thereof, are disposed in areas of a rectangular plate-shaped piezoelectric transducer element ( 1 ) in which the strain in the natural mode of vibration is large. The electrodes ( 7, 8 ) which excite a bending vibration are disposed in areas in which the strain in the bending natural mode is at least a predetermined valu…
- Who is the assignee on this patent?
- Takano Masahiro, Hirosaki Kenichi, Yoshida Yuta, and 11 more
- What technology area does this patent fall under?
- Primary CPC classification H02N2/004. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 04 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).