Ultrasonic transducer and ultrasonic motor

Details Ultrasonic transducer and ultrasonic motor Ultrasonic transducer and ultrasonic motor

2006-06-13

2006-06-13

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323020, C310S328000

Reexamination Certificate

active

07061159

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.

REFERENCES:
patent: 5345137 (1994-09-01), Funakubo et al.
patent: 6084335 (2000-07-01), Tamai
patent: 6404104 (2002-06-01), Maeno et al.
patent: 5-146171 (1993-06-01), None

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