Current control device

Details Current control device Current control device

2005-11-22

2005-11-22

Easthom, Karl D. (Department: 2832)

Electrical resistors

Resistance value responsive to a condition

Force-actuated

C338S099000, C338S101000, C338S114000

Reexamination Certificate

active

06967561

ABSTRACT:
A current control device is described wherein a pressure conduction composite is compressed and decompressed to alter its conductivity and thereby current conduction through the device. The pressure conduction composite is composed of a nonconductive matrix, a conductive filler, and an additive. The invention consists of electrodes, a nonconducting isolator, and pressure plates contacting the composite. Electrically activated actuators apply a force onto pressures plates. Each actuator is a piezoelectric, piezoceramic, electrostrictive, magnetostrictive, or piezo-controlled pneumatic element, capable of extending and/or contracting thereby altering pressure and consequently resistivity within the composite.

REFERENCES:
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patent: RE28595 (1975-10-01), DuRocher
patent: 4163204 (1979-07-01), Sado et al.
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patent: 5644283 (1997-07-01), Grosse-Wilde et al.
patent: 5929744 (1999-07-01), Duggal et al.
patent: 6794983 (2004-09-01), Bower et al.
patent: 2004/0104803 (2004-06-01), Bower et al.

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