Coaxial cable connector having jacket gripping ferrule and associated methods

• US 7,857,661 B1
• Filed: 02/16/2010
• Issued: 12/28/2010
• Est. Priority Date: 02/16/2010
• Status: Expired due to Fees

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: Andrew LLC (CommScope Holding Company, Inc.)
• Inventors: Islam, Nahid
• Primary Examiner(s): Prasad; Chandrika
• Application Number:
  US12/706,162
• Time in Patent Office: 315 Days
• Field of Search: 439/584, 439579-585, 174/89
• US Class Current: 439/584
• CPC Class Codes: H01R 9/0521 Connection to outer conductor by action of a nut
• CPC Class Codes: H01R 9/0524 Connection to outer conductor by action of a clamping member, e.g. screw fastening means H01R9/0515 takes precedence

Abstract

A connector is to be attached to a coaxial cable having an inner conductor, an outer conductor, a dielectric between the inner conductor and outer conductor, and a jacket surrounding the outer conductor. The connector includes a back nut to be received over the jacket of the coaxial cable and having an internal back nut ramp defined therein. A connector housing engages the back nut. There is a jacket gripping ferrule within the back nut that has a rearward portion configured to be urged radially inwardly by the internal back nut ramp to thereby dig into the cable jacket as the connector housing and back nut are engaged.

Claims

1. A connector to be attached to a coaxial cable comprising an inner conductor, an outer conductor, a dielectric between the inner conductor and outer conductor, and a jacket surrounding the outer conductor, the connector comprising:

a back nut to be received over the jacket of the coaxial cable and having an internal back nut ramp defined therein;

a connector housing to engage said back nut; and

a jacket gripping ferrule within said back nut and comprising a rearward portion configured to be urged radially inwardly by the internal back nut ramp to thereby dig into the cable jacket as said connector housing and back nut are engaged.

2. The connector of claim 1, wherein said jacket gripping ferrule comprises a base ring and a plurality of tapered teeth carried thereby.

3. The connector of claim 1, wherein said connector housing has a connector housing ramp defined therein;

wherein said jacket gripping ferrule further comprises a forward portion coupled to the rearward portion; and

further comprising a ring to clamp against the outer conductor opposite the connector housing ramp and to engage the forward portion of said jacket gripping ferrule as said connector housing and said back nut are engaged.

4. The connector of claim 3, wherein said ring comprises an electrically conductive coil spring.

5. The connector of claim 3, wherein the forward portion of said jacket gripping ferrule has an end extending radially outwardly to be engaged by said ring.

6. The connector of claim 5, wherein the end of the forward portion is angled rearwardly before said connector housing and back nut are fully engaged.

7. The connector of claim 1, wherein the forward portion and rearward portion of said jacket gripping ferrule are parallel before said connector housing and said back nut are fully engaged.

8. The connector of claim 1, wherein said jacket gripping ferrule further comprises an intermediate offset defining portion betWeen the forward portion and the rearward potion.

9. The connector of claim 8, wherein said back nut further has an internal shoulder defined therein;

and wherein the intermediate offset defining portion of said jacket gripping ferrule is received against the shoulder.

10. The connector of claim 1, further comprising at least one dielectric body carried within said connector housing and a center contact carried by said at least one dielectric body for coupling to the inner conductor of the coaxial cable.

11. A connector to be attached to a coaxial cable comprising an inner conductor, an outer conductor, a dielectric between the inner conductor and outer conductor, and a jacket surrounding the outer conductor, the connector comprising:

a back nut to be received over the jacket of the coaxial cable and having an internal back nut ramp defined therein;

a connector housing to engage said back nut and having a connector housing ramp defined therein;

a jacket gripping ferrule within said back nut and comprising

a rearward portion configured to be urged radially inwardly by the internal back nut ramp to thereby dig into the cable jacket as said connector housing and back nut are engaged,

a forward portion coupled to the rearward portion, and

an intermediate offset defining portion between the forward portion and the rearward potion; and

a ring to clamp against the outer conductor opposite the connector housing ramp and to engage the forward portion of said jacket gripping ferrule as said connector housing and said back nut are engaged.

12. The connector of claim 11, wherein said jacket gripping ferrule comprises a base ring and a plurality of tapered teeth carried thereby.

13. The connector of claim 11, wherein said ring comprises an electrically conductive coil spring.

14. The connector of claim 11, wherein the forward portion of said jacket gripping ferrule has an end extending radially outwardly to be engaged by said ring.

15. The connector of claim 11, wherein the end of the forward portion is angled rearwardly before said housing and back nut are fully engaged.

16. The connector of claim 11, wherein the forward portion and rearward portion of said jacket gripping ferrule are parallel before said connector housing and said back nut are fully engaged.

17. The connector of claim 11, wherein said back nut further has an internal shoulder defined therein;

and wherein the intermediate offset defining portion of said jacket gripping ferrule is received against the shoulder.

18. The connector of claim 11, further comprising at least one dielectric body carried within said connector housing and a center contact carried by said at least one dielectric body for coupling to the inner conductor of the coaxial cable.

24. The method of claim 16, wherein the end of the forward portion is angled rearwardly before the connector housing and the back nut are fully engaged.

19. A method of making a connector to be attached to a coaxial cable comprising an inner conductor, an outer conductor, a dielectric between the inner conductor and outer conductor, and a jacket surrounding the outer conductor, the method comprising:

forming a back nut to be received over the jacket of the coaxial cable and having an internal back nut ramp defined therein;

forming a connector housing to engage the back nut;

forming a jacket gripping ferrule to be positioned within the back nut and comprising a rearward portion configured to be urged radially inwardly by the internal back nut ramp to thereby dig into the cable jacket as the connector housing and back nut are engaged.

20. The method of claim 19, wherein the jacket gripping ferrule is formed to have a base ring and a plurality of tapered teeth carried thereby.

21. The method of claim 19, wherein the connector housing is formed to have a connector housing ramp defined therein;

wherein the jacket gripping ferrule is also formed to have a forward portion coupled to the rearward portion; and

further comprising positioning a ring to clamp against the outer conductor opposite the connector housing ramp and to engage the forward portion of the jacket gripping ferrule as the connector housing and the back nut are engaged.

22. The method of claim 21, wherein the ring comprises an electrically conductive coil spring.

23. The method of claim 21, wherein the jacket gripping ferrule is also formed to have an end of the forward portion that extends radially outwardly to be engaged by the ring.

25. The method of claim 19, wherein the forward portion and rearward portions of the jacket gripping ferrule are formed to be parallel before the connector housing and the back nut are fully engaged.

26. The method of claim 19, wherein the jacket gripping ferrule is also formed to have an intermediate offset defining portion between the forward portion and the rearward potion.

27. The method of claim 26, wherein the back nut is also formed to have an internal shoulder defined therein;

and wherein the intermediate offset defining portion of the jacket gripping ferrule is received against the shoulder.