High voltage electrostatic generator

Patent metadata

Field	Value
Publication number	US-9847740-B2
Application number	US-201214432052-A
Country	US
Kind code	B2
Filing date	Sep 28, 2012
Priority date	Sep 28, 2012
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A high-voltage electrostatic generator has an assembly of concentric electrically conductive half-shells separated by an equatorial gap, essentially with cylindrical symmetry about an axis. Adjacent to the equatorial gap, edge regions of at least a selected subset of the half-shells are shaped.

First claim

We claim as our invention:

1. A high-voltage electrostatic generator comprising:
an assembly of concentric electrically conductive half-shells, said assembly having an equator, with half-shells on one side of said equator being separated from half-shells on an opposite side of said equator by a gap in which said equator is situated, essentially with cylindrical symmetry about an axis that is perpendicular to a plane containing said equator, thereby defining inner half-shells that are radially closer to said axis and that are radially inside outer half-shells that are radially farther from said axis; and
each of said half-shells having an edge region adjacent to the gap, with the respective edge regions of at least some of the half-shells being shaped, so that edge regions of at least some of said radially outer half-shells flare radially away from the axis, while edge regions of at least some of said radially inner half-shells flare radially inwardly toward said axis, thereby giving at least a subset of said half-shells flared edge regions, so as to make the flared edge regions substantially parallel to lines of electrostatic equipotential in a vicinity of said flared edge regions and thereby to minimizing electrostatic stress in the vicinity of each flared edge region.

2. A high-voltage electrostatic generator according to claim 1 wherein the subset comprises radially outermost half-shells.

3. A high-voltage electrostatic generator according to claim 1 wherein the subset comprises radially innermost half-shells.

4. A high-voltage electrostatic generator according to claim 1 wherein the subset comprises all half-shells.

5. A high-voltage electrostatic generator according to claim 1 wherein half-shells in said assembly, other than the half-shells of the subset, have unflared edge regions.

6. A high-voltage electrostatic generator according to claim 3 wherein the flaring of radially innermost half-shells continues such that the gap between the radially innermost half-shells is smaller than the gap between all other half-shells.

Assignees

• Aptaker Peter Simon
• Beasley Paul
• Heid Oliver
• Siemens Ag

Inventors

• Aptaker Peter Simon
• Beasley Paul
• Heid Oliver

Classifications

• H05H5/04

  energised by electrostatic generators · CPC title

• H02N99/00 Primary

  Subject matter not provided for in other groups of this subclass · CPC title

• H02N1/00

  Electrostatic generators or motors using a solid moving electrostatic charge carrier · CPC title

• H05H5/066

  Onion-like structures · CPC title

• H05H5/045 Primary

  High voltage cascades, e.g. Greinacher cascade · CPC title