Dielectric motor

US5726509A · kind A · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Wolfgang Benecke · Kürten, DE
• Bernhard Wagner · Fellbach, DE
• Gunter Fuhr · Berlin, DE
• Rolf Hagedorn · Berlin, DE
• Roland Glaser · Burbank, US
• Jan Gimsa · Berlin, DE

Key dates

• Filing date: Oct 21, 1991
• Grant date: Mar 10, 1998
• Expiry date: Oct 21, 2011

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02N1/004
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A motor whose torque is not generated by magnetic fields but rather by dielectric forces to be used in microelectronics and micromechanics. The rotors are composed of several dielectrics, which are arranged in a sector-shaped or shell-shaped manner or partially or completely envelop each other. These motors can be miniaturized down to a size of a few millimeters. They are distinguished by having slow to medium rotation speeds, short starting phases (ms range and less), extremely low current consumption, simple construction, high running constancy and being practically maintenance free. The characteristic curve of rotation (rotation as the function of the field frequency) may be selected in many ranges by changing the dielectrics of the rotor.