Patent Number: 6,798,331

Title: Current control device

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. Actuators are composed of a piezoelectric, piezoceramic, electrostrictive, magnetostrictive, and shape memory alloy materials, capable of extending and/or contracting thereby altering pressure and consequently resistivity within the composite. In an alternate embodiment, two or more current control devices are electrically coupled parallel to increase power handling.

Inventors: Bower; Bruce (Williamsport, PA), Knowles; Gareth (Williamsport, PA)

Assignee: QorTek, Inc.

International Classification: H01C 7/02 (20060101); H01C 10/00 (20060101); H01C 10/10 (20060101); H01L 010/10 ()

Expiration Date: 09/28/2021