Tape transducer

Details Tape transducer Tape transducer

1981-03-16

1983-05-03

Griffin, Donald A.

Electrical transmission or interconnection systems

Electrets

179111E, H04R 1900, G08B 1316

Patent

active

043821960

ABSTRACT:
A tape transducer comprising an inner conductive strip laminate sandwiched between and totally enclosed by identical outer conductive strip laminates. The inner laminate has an inner conductive strip having opposite sides to which thin dielectric layers are bonded, the layers being electrically charged to form electrets having electrical charges of the same polarity on their outer surfaces. Each outer laminate has a conductive foil with marginal side portions overlying the side edges of the inner laminate and sealed together. The portions of the outer laminates aligned with the inner laminate are capable of simultaneously moving toward and away from the inner laminate for advantageously generating sonic waves in a transmitting mode and for efficiently generating an electrical signal in a receiving mode.

REFERENCES:
patent: 3663768 (1972-05-01), Madsen et al.
patent: 3705312 (1972-12-01), Sessler et al.
patent: 3809828 (1974-05-01), Haugsjaa et al.
patent: 4023155 (1977-05-01), Miller
patent: 4041446 (1977-08-01), Liebermann
patent: 4250415 (1981-02-01), Lewiner et al.

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