CATV Port Terminator With Contact-Enhancing Ground Insert

• US 20100279548A1
• Filed: 07/13/2010
• Published: 11/04/2010
• Est. Priority Date: 10/26/2006
• Status: Active Grant

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: John Mezzalingua Associates Incorporated
• Inventors: Montena, Noah, Haube, Richard
• Granted Patent: US 8,062,044 B2
• Time in Patent Office: Days
• US Class Current: 439/620.04
• CPC Class Codes: H01P 1/266 Coaxial terminations H01P1/262 takes precedence
• CPC Class Codes: H01R 13/6616 with resistor
• CPC Class Codes: H01R 24/40 specially adapted for high frequency

Abstract

A port terminator includes an outer nut, which may be either electrically conductive or non-electrically conductive, and an electrically conductive ground insert. A portion of the ground insert captures a ground portion of a termination resistor, while a deformable portion of the ground insert makes electrical contact with a connection end of an equipment port when the port terminator is screwed onto the equipment port. The deformable portion can take the form of a flexible brim or a plurality of petals. The petals preferably alternate between flat petals and biased petals. The ground insert permits the port terminator to make a uniform RF seal on an equipment port even with a range of tightening torques.

Claims

1. A port terminator for use in a coaxial cable system, comprising:

an outer nut;

the outer nut having first and second chambers;

an inside of the first chamber having at least one thread therein;

a ground insert positioned inside the second chamber;

the ground insert being electrically conductive;

the ground insert having a capture portion, a middle portion, and a deformable portion, with the capture portion connected to the middle portion, and the middle portion connected to the deformable portion via a transition band;

a termination resistor including a ground portion and a conductor portion, wherein an electrical resistance is electrically connected between the conductor portion and the ground portion; and

the ground portion of the termination resistor being held inside and making electrical contact with the capture portion of the ground insert.

2. A port terminator according to claim 1, wherein the deformable portion includes a plurality of flat petals and a plurality of biased petals.

3. A port terminator according to claim 2, wherein the flat petals are alternated with the biased petals.

4. A port terminator according to claim 1, wherein the deformable portion includes a flexible brim.

5. A port terminator according to claim 1, wherein the outer nut is of a non-electrically conductive material.

6. A port terminator according to claim 5, wherein when the port terminator is connected to an equipment port, and wherein the equipment port includes a conductor port and a connector end, an electrical path is established from the conductor port to the termination resistor to the ground insert to the connector end.

7. A port terminator according to claim 1, wherein the capture portion is connected to the middle portion via an angled portion.

8. A method for manufacturing a port terminator for use in a coaxial cable system, comprising the steps of:

forming an outer nut having first and second chambers;

forming at least one thread on an inside of the first chamber;

forming an electrically conductive ground insert, wherein the ground insert includes a capture portion, a middle portion, and a deformable portion, with the capture portion connected to the middle portion, and the middle portion connected to the deformable portion via a transition band;

positioning the ground insert inside the second chamber;

providing a termination resistor including a ground portion and a conductor portion, wherein an electrical resistance is electrically connected between the conductor portion and the ground portion;

positioning the ground portion of the termination resistor inside the capture portion of the ground insert; and

fastening the ground portion of the termination resistor to the capture portion of the ground insert, thereby making good electrical contact between the termination resistor and the ground insert.

9. A method according to claim 8, wherein the step of forming the deformable portion includes forming a plurality of flat petals and a plurality of biased petals.

10. A method according to claim 9, wherein the step of forming the deformable portion includes alternating the flat petals with the biased petals.

11. A method according to claim 8, wherein the step of forming the deformable portion includes forming a flexible brim.

12. A method according to claim 8, wherein the step of forming the outer nut includes forming the outer nut of a non-electrically conductive material.

13. A method according to claim 12, wherein when the port terminator is connected to an equipment port, and wherein the equipment port includes a conductor port and a connector end, an electrical path is established from the conductor port to the termination resistor to the ground insert to the connector end.

14. A method according to claim 8, wherein the step of forming an electrically conductive ground insert includes connecting the capture portion to the middle portion via an angled portion.

15. A port terminator for use in a coaxial cable system, comprising:

an outer nut;

the outer nut having first and second chambers;

an inside of the first chamber having at least one thread therein;

a ground insert positioned inside the second chamber;

the ground insert being electrically conductive;

a termination resistor including a ground portion and a conductor portion, wherein an electrical resistance is electrically connected between the conductor portion and the ground portion;

the ground insert including means for receiving and being electrically connected to the ground portion of the termination resistor; and

the ground insert further including deformable means for establishing electrical contact with a connector end of an equipment port when the port terminator is connected to the equipment port, such that an electrical path is established from a conductor port of the equipment port to the termination resistor to the ground insert to the connector end of the equipment port.

16. A port terminator according to claim 15, wherein the deformable means includes a plurality of flat petals and a plurality of biased petals.

17. A port terminator according to claim 16, wherein the flat petals are alternated with the biased petals.

18. A port terminator according to claim 15, wherein the deformable means includes a flexible brim.

19. A port terminator according to claim 15, wherein the outer nut is made of a non-electrically conductive material.

20. A port terminator according to claim 15, wherein the termination resistor is a peanut resistor.