Induction charge transfer system and method for neutralizing electrostatic charge generation

Patent metadata

Field	Value
Publication number	US-9956932-B2
Application number	US-201615251519-A
Country	US
Kind code	B2
Filing date	Aug 30, 2016
Priority date	Aug 30, 2016
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

A method for neutralizing electrostatic charge comprising the steps of placing a first conductive body in contact with a second conductive body, wherein the first conductive body is proximate to a charged object; inducing a positive charge on the first conductive body and an equal amount of negative charge on the second conductive body; electrically isolating the first and second conductive bodies; connecting the first conductive body to the negatively charged object long enough to neutralize excess positive charge; placing the second conductive body in contact with an electrical receiver; transferring excess charge into the electrical receiver; discharging and isolating the conductive bodies; and bringing the conductive bodies back into contact with each other.

First claim

I claim:

1. A method for neutralizing electrostatic charge comprising the steps of:
placing a first conductive body in contact with a second conductive body, wherein the first conductive body is proximate to a charged object;
inducing a positive charge on the first conductive body and an equal amount of negative charge on the second conductive body;
electrically isolating the first and second conductive bodies;
connecting the first conductive body to the negatively charged object long enough to neutralize excess positive charge;
placing the second conductive body in contact with an electrical receiver;
transferring excess charge into the electrical receiver;
discharging and isolating the conductive bodies; and
bringing the conductive bodies back into contact with each other.

2. The method of claim 1 wherein the electrical receiver receiving the excess charge is at least one rechargeable battery.

3. The method of claim 2 wherein the charged object proximate to the conductive body is a helicopter airframe.

4. The method of claim 3 wherein the conductive bodies in contact with each other are hollow metallic spheres.

5. The method of claim 4 wherein the steps of making and breaking electrical connections with the first and second conductive bodies are accomplished using a resistor-capacitor (RC) circuit.

6. The method of claim 5 further comprising the step of using an integrating ammeter to measure the charge on the conductive bodies.

7. The method of claim 4 wherein the steps of making and breaking electrical connections with the first and second conductive bodies are accomplished using a track on which the conductive bodies can move back and forth.

8. A system for neutralizing electrostatic charge comprising:
a first conductive body in contact with a second conductive body, wherein the first conductive body is positioned within a hemispherical charging cup;
a charged object electrically connected to the hemispherical charging cup;
discharge electronics, wherein the discharge electronics are operatively coupled to a power source; and
charge neutralization electronics.

9. The system of claim 8 wherein the first and second conductive bodies are hollow metallic spheres.

10. The system of claim 9 wherein the charged object is a helicopter airframe.

11. The system of claim 10 wherein the power source comprises at least one rechargeable battery.

12. The system of claim 11 wherein the system is housed in a Faraday shield enclosure.

13. The system of claim 12 wherein wide band gap devices are used to make and break connections.

14. The system of claim 13 wherein the wide band gap devices are Silicon Carbide Silicon Carbide Middle Oxide Semiconductor Field Effect Transistor (MOSFET) switches.

15. The system of claim 14 wherein the first sphere and second sphere are positioned on a track to allow for moving back and forth.

16. The system of claim 15 wherein the electrical connections are made using a resistor-capacitor (RC) circuit.

17. A method comprising the steps of:
positioning a first conductive body and a second conductive body along a track, wherein the first and second conductive bodies are in contact;
positioning the left side of the first conductive body within a hemispherical charging cup;
coupling the hemispherical charging cup with a negatively charged object;
moving the second conductive body to the right on the track until it makes contact with a metal conductor protruding from a discharge electronics module having an induced electrical charge;
transferring the induced electrical charge from the discharge electronics module to a power source;
moving a charge neutralization electronics module to contact the first conductive body and the hemispherical charging cup;
retracting the charge neutralization electronics module to break contact with the first conductive body and the hemispherical charging sphere.

18. The method of claim 17 wherein the negatively charged object to which the hemispherical charging cup is coupled is a helicopter airframe.

19. The method of claim 18 wherein the power source receiving the electrical charge is a rechargeable battery.

20. The method of claim 19 , further comprising the step of using a Faraday shield enclosure to allow for an isolated reference ground plane.

Assignees

• Us Navy

Inventors

• Mcbeth Michael S

Classifications

• H01M10/44 Primary

  Methods for charging or discharging (circuits for charging H02J7/00) · CPC title

• B64D45/02

  Lightning protectors; Static dischargers · CPC title

• H02J7/0052

  Electricity · mapped topic

• H05K9/0007

  Casings (standardised racks H05K9/0062) · CPC title

• B60R16/06 Primary

  for removing electrostatic charges (carrying-off electrostatic charges in general H05F3/00) · CPC title