FLAT WIRE EXTENSION CORDS AND EXTENSION CORD DEVICES

• US 20090124113A1
• Filed: 12/22/2008
• Published: 05/14/2009
• Est. Priority Date: 09/05/2003
• Status: Active Grant

• Current Assignee: Southwire Company
• Original Assignee: Newire Incorporated, Southwire Company
• Inventors: Garris, Charles Alexander III, Thorn, Stuart Wallace, Martin, Fred Lane, Sexton, Robert Jay
• Granted Patent: US 8,237,051 B2
• Time in Patent Office: Days
• US Class Current: 439/369
• CPC Class Codes: H01B 7/0216 Two layers
• CPC Class Codes: H01B 9/04 Concentric cables

Abstract

Flat wire extension cords and extension cord devices are provided. A flat wire extension cord includes an elongated cord, a first connected attached to a first end of the elongated cord, and a second connected attached to an opposite end of the elongated cord. The elongated cord includes at least one electrifiable conductor for delivering electrical power, first and second insulating layers formed on opposing sides of the at least one electrifiable conductor, and first and second return conductors formed on the first and second insulating layers, respectively, such that said at least one electrifiable conductor is at least substantially entrapped by said first and second return conductors. The first connector is operable to connect the conductors of the elongated cord to a line side input, and the second connector is operable to connect the conductors of the elongated cord to a load.

Claims

1. An extension cord, comprising:

an elongated cord comprising;

at least one electrifiable conductor for delivering electrical power;

first and second insulating layers formed on opposing sides of the at least one electrifiable conductor,

first and second return conductors formed on the first and second insulating layers, respectively, such that said at least one electrifiable conductor is at least substantially entrapped by said first and second return conductors;

a first connector attached to a first end of the elongated cord and operable to connect the conductors of the elongated cord to a line side input; and

a second connector attached to a second end of the elongated cord opposite the first end, the second connector operable to connect the conductors of the elongated cord to a load.

2. The extension cord according to claim 1, wherein the elongated cord further comprises:

third and fourth insulating layers formed on said first and second return conductors, respectively; and

first and second grounding conductors formed on said third and fourth insulating layers, respectively.

3. The extension cord according to claim 1, wherein a total thickness of the elongated cord is no more than approximately 0.050 inches.

4. The extension cord according to claim 1, wherein a distance between said at least one electrifiable conductor and each of said first and second return conductors is no greater than approximately 0.030 inches.

5. The extension cord according to claim 2, wherein an object penetrating an outer surface of the elongated cord contacts at least one of the first and second grounding conductors and at least one of the first and second return conductor before contacting the at least one electrifiable conductor.

6. The extension cord according to claim 1, wherein the elongated cord comprises one of an approximately 120V AC elongated cord or an approximately 240V AC elongated cord.

7. The extension cord according to claim 1, wherein said elongated cord comprises a flexible elongated cord.

8. The extension cord according to claim 1, wherein each of said at least one electrifiable conductors comprises a thickness which is in a range from about 0.0004 inches to about 0.020 inches.

9. The extension cord according to claim 1, wherein the line side input comprises a conventional three-conductor electrical line side input, and

wherein the first connector is operable to connect one or more conductors of the line side to one or more corresponding conductors of the elongated cord.

10. The extension cord according to claim 1, wherein the load comprises a conventional electrical outlet, and

wherein the second connector is operable to connect one or more conductors of the elongated cord to one or more corresponding conductors of the conventional electrical outlet.

11. An extension cord system, comprising:

an extension cord comprising;

at least one electrifiable conductor for delivering electrical power;

first and second insulating layers formed on opposing sides of the at least one electrifiable conductor, and

first and second return conductors formed on the first and second insulating layers, respectively, such that said at least one electrifiable conductor is at least substantially entrapped by said first and second return conductors; and

a housing, comprising;

one or more components that define an interior portion in which at least a portion of the extension cord is housed, wherein an opening is defined in the one or more components through which an un-housed portion of the extension cord is extended;

a spooling mechanism operable to Wind up the at least a portion of the extension cord that is housed within the housing; and

a connector operable to connect the conductors of the extension cord to a line side input.

12. The extension cord system according to claim 11, wherein the extension cord further comprises:

third and fourth insulating layers formed on said first and second return conductors, respectively; and

first and second grounding conductors formed on said third and fourth insulating layers, respectively.

13. The extension cord system according to claim 11, wherein a total thickness of the extension cord is no more than approximately 0.050 inches.

14. The extension cord system according to claim 11, wherein a distance between said at least one electrifiable conductor and each of said first and second return conductors is no greater than approximately 0.030 inches.

15. The extension cord system according to claim 12, wherein an object penetrating an outer surface of the extension cord contacts at least one of the first and second grounding conductors and at least one of the first and second return conductor before contacting the at least one electrifiable conductor.

16. The extension cord system according to claim 11, wherein the extension cord comprises one of an approximately 120V AC extension cord or an approximately 240V AC extension cord.

17. The extension cord system according to claim 11, wherein said extension cord comprises a flexible extension cord.

18. The extension cord system according to claim 11, wherein each of said at least one electrifiable conductors comprises a thickness which is in a range from about 0.0004 inches to about 0.020 inches.

19. The extension cord system according to claim 11, wherein the line side input comprises a conventional three-conductor electrical line side input, and

wherein the connector is operable to connect one or more conductors of the line side to one or more corresponding conductors of the extension cord.

20. The extension cord system according to claim 11, wherein the connector is a first connector, and further comprising:

a second connector attached to an end of the extension cord that is extendible from the housing and operable to connect one or more of the conductors of the extension cord to a load.

21. The extension cord system according to claim 20 wherein the load is a conventional electrical outlet, and

wherein the second connector is operable to connect one or more conductors of the extension cord to one or more corresponding conductors of the conventional electrical plug.

22. The extension cord system according to claim 11, further comprising:

a retraction device operable to facilitate winding up the extension cord.

23. The extension cord system according to claim 11, wherein the housing comprises a portable housing.

24. The extension cord system according to claim 11, further comprising:

a bracket operable to rotatably mount the housing to a surface.