Current control device
US6943660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2004 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Mar 26, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49147
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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 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. Two or more current control devices are electrically coupled parallel to increase power handling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.