Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1994-12-30
1997-05-27
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310330, 310366, 310367, H01L 4108
Patent
active
056335547
ABSTRACT:
A piezoelectric ceramic linear actuator utilizing a piezoelectric characteristic which can be voluminously produced at a low cost. An electrode 104 is disposed on a ceramic green sheet 102 which is changeable in shape, constituting and electro-mechanical transducer element. A part of this piezoelectric ceramic green sheet 102 is fixed on a fixing base 106 (in the example given in FIG. 2, fixed on the left surface of a projection 108 of the fixing base 106), and the repetitive extension and contraction of a non-stationary part drives an article to be carried 110. In the example of FIG. 2, a wiring is installed so that there can be formed a first condition in which a C part contracts with the extension of an A part and at the same time a D part contracts with the extension of a B part, and a second condition in which the C part extends with the contraction of the A part and at the same time the D part extends with the contraction of the B part. In consequence, it is possible to move the article to be carried 110 rightward in the drawing, by repeating the first and second conditions alternately.
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Budd Mark O.
Sumitomo Heavy Industrie's, Ltd.
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