Current control device
US6967561B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2004 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Aug 10, 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, 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.