Coaxial cable end connector with integral moisture seal

• US 5,571,028 A
• Filed: 08/25/1995
• Issued: 11/05/1996
• Est. Priority Date: 08/25/1995
• Status: Expired due to Term

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: John Mezzalingua Associates Incorporated
• Inventors: Szegda, Andrew
• Primary Examiner(s): NGUYEN, KHIEM M
• Application Number:
  US08/519,654
• Time in Patent Office: 438 Days
• Field of Search: 439/320, 439/321, 439/322, 439/339, 439/340, 439/271, 439/272, 439/277, 439/583, 439/584, 411/369, 411/542
• US Class Current: 439/322
• CPC Class Codes: H01R 13/5219 Sealing means between coupling parts, e.g. interfacial seal
• CPC Class Codes: H01R 9/0521 Connection to outer conductor by action of a nut

Abstract

An end connector for a coaxial cable has a rotatable nut with an internal thread configured and dimensioned to coact in threaded engagement with a complimentary external thread on a system component. A circular seal element is contained within and axially fixed with respect to the nut. The seal element is deformable into a configuration lining at least a portion of the internal thread to thereby establish a barrier to the penetration of moisture between the interengaged internal and external threads.

Claims

1. A connector for connecting a coaxial cable to a system component, said connector comprising:

a connector body having a from end and a rear end, said rear end being adapted to axially inserted into an end of said cable;

means associated with the rear end of said connector body for securing said connector to said cable end;

a rotatable nut at the front end of said connector body, said nut having an internal thread with an axial length, pitch, thread angle and major and minor diameters configured and dimensioned to coact in threaded engagement with a complimentary external thread on said system component; and

a circular seal element contained within and axially fixed with respect to said nut, said seal element being deformable into a configuration lining at least a substantial portion of said internal thread and a portion of said external thread to thereby establish a barrier to the penetration of moisture between said internal and external threads.

2. The end connector of claim 1 further comprising a circular groove interrupting said internal thread at a location intermediate the ends thereof, at least a portion of said seal element being seated in said groove.

3. The end connector of claim 2 wherein said groove has a maximum diameter which is greater than the major diameter of said internal thread.

4. The end connector of claims 2 or 3 wherein said seal element is axially at least partially confined within said groove.

5. The end connector of claim 1 wherein said seal element comprises a cylindrical sleeve.

6. The end connector of claim 5 wherein said sleeve is permanently deformed into conformity with the profile of said internal thread.

7. The end connector of claim 2 wherein said seal element comprises a cylindrical sleeve at least partially received in said circular groove.

8. The end connector of claim 7 further comprising means for resiliently urging said sleeve radially outwardly into said groove.

9. The end connector of claim 1 wherein said seal element in non-metallic.

10. The end connector of claim 9 wherein said seal element is radially expandable and permanently deformable.

11. The end connector of claims 9 or 10 wherein said seal element is polytetrafluoroethylene.

12. The end connector of claim 1 wherein said seal element is deformable radially outwardly beyond the minor diameter of said internal thread.

13. The end connector of claim 12 wherein said seal element is deformably radially outwardly to the major diameter of said internal thread.

14. The end connector of claim 1 wherein the axial length of said seal element exceeds the pitch of said internal thread.