Patent ID: 11863086
Assignee: THE CHARLES STARK DRAPER LABORATORY, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An electrostatic motor, comprising:
a rotor, rotatable about a rotation axis and defining a first cylindrical surface having a longitudinal axis coincident with the rotation axis and having a first plurality of elongated charge members disposed circumferentially on the first cylindrical surface, each first charge member extending parallel to the longitudinal axis;
a stator defining a second cylindrical surface counterfacing, and spaced apart from, the first cylindrical surface and having a second plurality of elongated charge members disposed circumferentially on the second cylindrical surface, each second charge member extending parallel to the longitudinal axis; wherein:
one surface of the first and second cylindrical surfaces is an outside cylindrical surface, and the other surface of the first and second cylindrical surfaces is an inside cylindrical surface, the first and second cylindrical surfaces define a cylindrical shell therebetween, and a dielectric fills the cylindrical shell;
one plurality of charge members of the first and second pluralities of charge members comprises a plurality of electrets arranged such that adjacent electrets are of opposite charge;
the other plurality of charge members of the first and second pluralities of charge members comprises a first plurality of electrodes; the electrostatic motor further comprising:
a plurality of first charging electrodes, one first charging electrode of the plurality of first charging electrodes for each respective electret of the plurality of electrets, each first charging electrode being disposed below, and in intimate contact with, the respective electret.