Bimorph transducer made from polymer material

Details Bimorph transducer made from polymer material Bimorph transducer made from polymer material

1980-12-09

1983-08-23

Griffin, Donald A.

Electrical transmission or interconnection systems

Electrets

G11C 1302

Patent

active

044006349

ABSTRACT:
The invention relates to bimorph electromechanical transducers made from polymer material.
It specifically relates to a transducer comprising a plurality of superimposed dielectric sheets for forming a bimorph structure, whose deformations are controlled in linear manner by a voltage. None of the sheets is piezoelectric. The linearity of operation is obtained because at least one of the dielectric sheets carries a permanent electric charge.
The invention is applicable to the construction of microphones, telephone receivers, loudspeakers, as well as to the construction of optical components, whose precise, small displacements it is desired to control.

REFERENCES:
patent: 3354373 (1967-11-01), Fatovic
patent: 3809828 (1974-05-01), Haugsjaa et al.
patent: 4250415 (1981-02-01), Lewiner et al.
Electronique et Applications Industrielles No. 252, May 1978, "The Application of Electrets" pp. 15 and 19, p. 17, right column, line 8 through p. 19, last column on the left; FIGS. 9-13.

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