Wire with electrostatically conductive insulator

Patent metadata

Field	Value
Publication number	US-10920722-B2
Application number	US-201916280327-A
Country	US
Kind code	B2
Filing date	Feb 20, 2019
Priority date	Mar 15, 2018
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

In at least some implementations, a wire includes a core formed from an electrically conductive material and having an outer surface, and a polymeric insulator surrounding the core. The insulator has a resistivity of between 105 and 109 ohms/square, and the insulator has an inner surface engaged with the core. In at least some implementations, the core is formed from metal and has a conductivity of at least 1×10−6 Ωm. The insulator may include a base material and a conductive material in the base material, wherein the conductive material has a conductivity between 105 and 106 ohms/square. The insulator may have an outer surface that defines an outer surface of the wire and/or the insulator may have an inner surface engaged with the core.

First claim

The invention claimed is:

1. A portion of a fuel system, comprising:
a first fuel system component that is coupled to ground;
a second fuel system component; and
a wire having an insulator and a core, wherein the insulator is electrically coupled to the second fuel system component and the core is coupled to the first fuel system component to permit static charges from the second fuel system component to flow to ground through the insulator.

2. The portion of the fuel system of claim 1 wherein electricity is provided to the first fuel system component via the core at a voltage of less than 50 volts, and wherein the insulator is insulative to voltages less than 50 volts.

3. The portion of the fuel system of claim 1 wherein the first fuel system component includes an electric motor.

4. The portion of the fuel system of claim 3 wherein the second fuel system component is arranged to permit fuel flow therethrough.

5. The portion of the fuel system of claim 4 wherein the second fuel system component includes a portion that is metal and the core is in contact with the portion that is metal.

6. The portion of the fuel system of claim 1 wherein the insulator includes an inner surface engaged with the core and an outer surface that defines an outer surface of the wire and which is electrically coupled to the second fuel system component.

7. The portion of the fuel system of claim 1 wherein the core is formed from metal and has a conductivity of at least 1×10 6 siemens/meter.

8. The portion of the fuel system claim 1 wherein the insulator includes a base material and a conductive material in the base material, wherein the conductive material has a resistivity between 10 5 and 10 6 ohms/square.

9. The portion of the fuel system of claim 1 wherein the insulator has an outer surface that defines an outer surface of the wire.

10. The portion of the fuel system of claim 1 wherein the core has a diameter of between 0.2 mm and 1.5 mm, and the insulator has an outer diameter of between 0.5 mm and 2.7 mm.

11. The portion of the fuel system of claim 1 wherein the maximum charge that may exist in the insulator when the insulator is coupled to ground is 0 volts to 200 volts.

12. The portion of the fuel system of claim 1 wherein the insulator has an inner surface engaged with the core.

Assignees

• Walbro Llc

Inventors

• Talaski Edward J

Classifications

• B60K2015/03217

  Fuel level sensors · CPC title

• B60Y2410/115

  Electric wiring; Electric connectors · CPC title

• B60R16/06

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

• H01B3/004

  with conductive additives or conductive layers · CPC title

• F02M2037/082

  Details of the entry of the current supply lines into the pump housing, e.g. wire connectors, grommets, plugs or sockets · CPC title