Piezoelectric composite materials

Details Piezoelectric composite materials Piezoelectric composite materials

1982-07-12

1983-08-23

Bell, James J.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310800, 428294, 428421, 428422, H04R 1700, H01L 4104

Patent

active

044006420

ABSTRACT:
A laminated structural device has the ability to change shape, position and resonant frequency without using discrete motive components. The laminate (10) may be a combination of layers (14,16) of a piezoelectrically active, non-conductive matrix material as shown in FIG. 1. A power source (22) selectively places various levels of charge an electrically conductive filaments (18,20) imbedded in the respective layers to produce various configurations shown in FIGS. 2 to 5 in a predetermined manner. The layers may be electrically conductive having imbedded piezoelectrically active filaments. A combination of layers of electrically conductive material may be laminated to layers of piezoelectrically active material.

REFERENCES:
patent: 3885758 (1975-05-01), Croswell, Jr.
patent: 3930626 (1976-01-01), Croswell, Jr.
patent: 3971250 (1976-07-01), Taylor

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