Resistor and method for making same

Patent metadata

Field	Value
Publication number	US-9378872-B2
Application number	US-201414280230-A
Country	US
Kind code	B2
Filing date	May 16, 2014
Priority date	Feb 6, 2008
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A resistor includes a substantially cylindrical resistive element having a resistance of less than about 1 mΩ, a substantially cylindrical first termination electrically connected to the resistive element and a second termination electrically connected to the resistive element. The substantially cylindrical first termination is hollow to allow for accepting a connection such as from a battery cable. In addition there may be sense leads present on the resistor. A method of forming a substantially cylindrical resistor includes forming a hollow cylindrical resistor body by rolling a flat sheet comprising a resistive element and a first termination and a second termination joined on opposite ends of the resistive element.

First claim

What is claimed is:

1. A cylindrical resistor, comprising:
a resistor comprising a cylindrical wire, the resistor having a first end and a second end;
a first terminal comprising a first tube magnetically pulse welded to the first end of the resistor; and,
a second terminal comprising a second tube magnetically pulse welded to the second end of the resistor.

2. The cylindrical resistor of claim 1 , wherein the resistor comprises a resistive element, and the resistive element is positioned at a distance between the first and second tubes to provide for a preselected initial resistance value.

3. The cylindrical resistor of claim 1 , further comprising a first sense lead connected to the first tube and a second sense lead connected to the second tube.

4. The cylindrical resistor of claim 1 , wherein the resistance of the resistor is configured for adjustment by removing a portion of the resistor.

5. The cylindrical resistor of claim 1 , wherein the resistance of the resistor is configured for adjustment by attaching material to the resistor.

6. The cylindrical resistor of claim 1 , wherein the first and second tubes comprise first and second open ends.

7. The cylindrical resistor of claim 1 , wherein the first tube has a first open end, and wherein a cable is attached to the first open end.

8. The cylindrical resistor of claim 1 , further comprising a flat terminal area in communication with the second terminal.

9. The cylindrical resistor of claim 8 , wherein the flat terminal area includes an aperture.

10. The cylindrical resistor of claim 1 , wherein the first or second terminal includes at least one slot to facilitate crimping to a cable.

11. A cylindrical resistor, comprising:
a first termination comprising a first tube, the first tube having an open end configured for axial attachment to a cable;
a second termination comprising a second tube;
a segment of substantially cylindrical resistance wire magnetic pulse welded between the first tube and the second tube to thereby provide a substantially cylindrical resistor.

12. The cylindrical resistor of claim 11 , wherein the resistive element is positioned at a distance between the first and second tubes to provide for a preselected initial resistance value.

13. The cylindrical resistor of claim 11 further comprising a first sense lead connected to the first tube and a second sense lead connected to the second tube.

14. The cylindrical resistor of claim 11 , wherein the resistance of the resistor is configured for adjustment by removing a portion of the resistive element.

15. The cylindrical resistor of claim 11 , wherein the resistance of the resistor is configured for adjustment by attaching material to the resistive element.

16. The cylindrical resistor of claim 11 , wherein the first and second tubes comprise first and second open ends.

17. The cylindrical resistor of claim 11 , wherein the first tube has a first open end, and wherein a cable is attached to the first open end.

18. The cylindrical resistor of claim 11 , further comprising a flat terminal area in communication with the second termination.

19. The cylindrical resistor of claim 18 , wherein the flat terminal area includes an aperture.

20. The cylindrical resistor of claim 11 , wherein the first or second termination includes at least one slot to facilitate crimping to a cable.

Assignees

• Vishay Dale Electronics Llc

Inventors

• Smith Clark L
• Smejkal Joel J
• Lange David
• Bertsch Thomas L
• Hendricks Steve
• Brune Rod

Classifications

• H01C1/148 Primary

  the terminals embracing or surrounding the resistive element (H01C1/142 takes precedence) · CPC title

• G01R1/203

  Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts (resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R) · CPC title

• H01C10/00

  Adjustable resistors · CPC title

• Y10T29/49082

  Resistor making · CPC title

• H01C17/28

  adapted for applying terminals · CPC title