Electro-mechanical energy conversion element and a vibration wav

Details Electro-mechanical energy conversion element and a vibration wav Electro-mechanical energy conversion element and a vibration wav

1996-04-23

1998-09-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, H01L 4108

Patent

active

058149198

ABSTRACT:
A stack type energy conversion element includes a first electro-mechanical energy conversion element having a plurality of driving electrodes as a first group, all of which are polarized in a first direction, and a second electro-mechanical energy conversion element having a plurality of driving electrodes as a second group, all of which are polarized in a second direction in which an inverse characteristic to that in the first direction is obtained, wherein the first and second energy conversion elements are stacked on each other such that phases of the electrodes of the first group are shifted from those of the electrodes of the second group.

REFERENCES:
patent: 4759107 (1988-07-01), Ogawa et al.
patent: 5231325 (1993-07-01), Tamai et al.
patent: 5345137 (1994-09-01), Funakubo et al.
patent: 5410204 (1995-04-01), Imabayashi et al.
patent: 5448128 (1995-09-01), Endo et al.
patent: 5548176 (1996-08-01), Oda
patent: 5585685 (1996-12-01), Maeno et al.

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