Ultrasonic transducer and ultrasonic motor
US7061159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2004 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Jul 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/871
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ultrasonic transducer in which internal electrodes and piezoelectric elements are alternately layered includes outer electrodes, each being connected to the corresponding internal electrodes. The ultrasonic transducer has a first layered part, a second layered part, a first outer-electrode group, and a second outer-electrode group. The first layered part includes at least the internal electrodes, each being divided in half in a second direction orthogonal to a layering direction, which is a first direction. The second layered part includes at least the internal electrodes, each being divided in half in a third direction orthogonal to the first direction and the second direction. The first outer-electrode group is provided so as to be connected to predetermined internal electrodes in the first layered part. The second outer-electrode group is provided so as to be connected to predetermined internal electrodes in the second layered part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.