Electrical cable using combination of high resistivity and low resistivity materials as conductors

• US 5,418,332 A
• Filed: 06/01/1993
• Issued: 05/23/1995
• Est. Priority Date: 06/01/1993
• Status: Expired due to Fees

• Current Assignee: Moncrieff J. Peter
• Original Assignee: Moncrieff J. Peter
• Inventors: Moncrieff, J. Peter
• Primary Examiner(s): NIMMO, MORRIS
• Application Number:
  US08/070,275
• Time in Patent Office: 721 Days
• Field of Search: 174/115, 174/126.2, 174/126.1
• US Class Current: 174/115
• CPC Class Codes: H01B 11/12 Arrangements for exhibiting specific transmission characteristics
• CPC Class Codes: H01B 7/0054 Cables with incorporated electric resistances

Abstract

A structure such as a cable for carrying an electric current or voltage or signal, where one conductor employs a material of much higher resistivity than the other conductor. A method of carrying an electric current or signal that allows exploitation of the advantages of high resistivity materials while avoiding disadvantages.

Claims

1. A structure for carrying an electrical current or voltage or signal,

said structure comprising a first conductor and a second conductor,

said first conductor and said second conductor being adaptable for carrying the forward and return paths for said electrical current or voltage or signal,

said first conductor being separated from said second conductor by a distance greater than zero,

said first conductor and said second conductor being distinct from any shielding means;

the improvement comprising the composition of said first conductor and said second conductor,

said first conductor employing a high resistivity material,

and said second conductor employing a low resistivity material,

the resistivity of said high resistivity material at 20 degrees Celsius being at least 10 times greater than the resistivity of said low resistivity material at 20 degrees Celsius.

2. The structure of claim 1 wherein said structure comprises an electrical cable.

3. The structure of claim 1 wherein said first conductor comprises a plurality of conductive means, where at least one of said conductive means employs said high resistivity material.

4. The structure of claim 1 wherein said first conductor employs said high resistivity material and does not employ said low resistivity material.

5. The structure of claim 1, further including a shielding means, where said first conductor is distinct from said shielding means and said second conductor is distinct from said shielding means.

6. The structure of claim 1, further including a shielding means,

where at most one of the opposite ends of said first conductor is connected to said shielding means and at most one of the opposite ends of said second conductor is connected to said shielding means.

7. The structure of claim 1 wherein said first conductor is made in any physical shape or form known to the art.

8. The structure of claim 1 wherein said second conductor is made in any physical shape or form known to the art.

9. A larger structure comprising the structure of claim 1, further including a further conductor or conductors, said further conductor or conductors being adaptable for carrying electrical current or voltage or signal,

where a first predetermined number of distinct conductors, from among the total number of distinct conductors in said larger structure, is provided, comprising numerically at least one distinct conductor for each forward current path or voltage or forward signal path, of the distinct electrical currents or voltages or signals to be carried by said larger structure,

and a second predetermined number of distinct conductors, from among said total number of distinct conductors in said larger structure, is provided, for carrying the return current path or common reference baseline or return signal path, of said distinct electrical currents or voltages or signals to be carried by said larger structure,

where said second predetermined number is less than said first predetermined number,

whereby the number of distinct conductors provided for carrying the forward current path or the voltage or the forward signal path, for electrical currents or voltages or signals, is greater than the number of distinct conductors provided for carrying the return current path or the common reference baseline or the return signal path, for electrical currents or voltages or signals.

10. The structure of claim 1 wherein a plurality of said first conductors are provided and are arranged around the periphery of at least one of said second conductors.

11. The structure of claim 1 wherein the resistivity of said first conductor at 20 degrees Celsius is at least 10 times greater than the resistivity of said second conductor at 20 degrees Celsius.

12. A method for carrying an electrical current o voltage or signal,

and obtaining the advantages of high resistivity materials,

in combination with the advantages of low resistivity materials,

said method comprising the step of providing a first conductor that employs a high resistivity material,

and the step of providing a second conductor that employs a low resistivity material,

said first conductor and said second conductor being adaptable for carrying the forward and return paths for said electrical current or voltage or signal,

said first conductor being separated from said second conductor by a distance greater than zero,

said first conductor and said second conductor being distinct from any shielding means;

the resistivity of said high resistivity material at 20 degrees Celsius being at least 10 times greater than the resistivity of said low resistivity material at 20 degrees Celsius.

13. The method of claim 12 wherein said first conductor comprises a plurality of conductive means, where at least one of said conductive means employs said high resistivity material.

14. The method of claim 12 wherein said first conductor employs said high resistivity material and does not employ said low resistivity material.

15. The method of claim 12, further including the added step of providing a shielding means, where said first conductor is distinct from said shielding means and said second conductor is distinct from said shielding means.

16. The method of claim 12, further including the added step of providing a shielding means,

where at most one of the opposite ends of said first conductor is connected to said shielding means and at most one of the opposite ends of said second conductor is connected to said shielding means.

17. The method of claim 12 wherein said first conductor is made in any physical shape or form known to the art, and said second conductor is made in any physical shape or form known to the art.

18. The method of claim 12 further including the added step of providing a further conductor or conductors, said further conductor or conductors being adaptable for carrying electrical current or voltage or signal,

where at least one of said further conductor or conductors is provided, for carrying the forward current path or the voltage or the forward signal path, for each of any distinct electrical currents or voltages or signals to be carried by said further conductor or conductors,

and one conductor is provided as a common conductor for carrying the return current path or the common reference baseline or the return signal path, for a plurality of distinct electrical currents or voltages or signals,

whereby the number of distinct conductors provided for carrying the forward current path or the voltage or the forward signal path, for electrical currents or voltages or signals, is greater than the number of distinct conductors provided for carrying the return current path or the common reference baseline or the return signal path, for electrical currents or voltages or signals.

19. The method of claim 12 wherein a plurality of said first conductors are provided and are arranged around the periphery of at least one of said second conductors.

20. The method of claim 12 wherein the resistivity of said first conductor at 20 degrees Celsius is at least 10 times greater than the resistivity of said second conductor at 20 degrees Celsius.