Coaxial cable connector for CATV systems

• US 5,667,405 A
• Filed: 01/29/1996
• Issued: 09/16/1997
• Est. Priority Date: 03/21/1994
• Status: Expired due to Term

• Current Assignee: Belden Inc.
• Original Assignee: Randall A. Holliday
• Inventors: Holliday, Randall A.
• Primary Examiner(s): PIRLOT, DAVID
• Application Number:
  US08/593,736
• Time in Patent Office: 596 Days
• Field of Search: 439/578-585, 439/675, 439/271-283
• US Class Current: 439/585
• CPC Class Codes: H01R 13/5219 Sealing means between coupling parts, e.g. interfacial seal
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/40 specially adapted for high frequency
• CPC Class Codes: H01R 9/0518 Connection to outer conductor by crimping or by crimping ferrule

Abstract

A coaxial cable connector for connecting a coaxial cable to a terminal port wherein a connector sleeve assists in retaining an end of the coaxial cable, and a coupling member between the sleeve and the port draws the sleeve into flush engagement with an end of the port, an improved sealing device is provided in which an annular seal member is interposed between a grooved portion on the forward end wall of the sleeve, the annular end of the port and within the coupling member, the seal being of a size greater than the groove and being partially compressed into the groove when the sleeve and port are drawn together so as to prevent moisture infiltration through the connecting interfaces between the coupling and connector as well as the coupling and port; and an extension wall of the connector which surrounds the end of the coaxial cable is selectively increased in thickness so as to prevent its collapse when a crimping force is applied to the extension wall.

Claims

1. In a coaxial cable connector for connection to a terminal port wherein an annular connector sleeve assists in retaining an end of a coaxial cable, and a coupling member draws a first annular end of said sleeve into flush engagement with a correspondingly sized second annular end of said port, the improvement comprising:

said first annular end including a forwardly extending wall portion provided with a radially outwardly facing circumferential groove; and

an annular seal interposed between said groove and said coupling member, said seal being of a size greater than said groove and being partially compressed into said groove when said wall portion is drawn into flush engagement with said second annular end to establish an electrically conductive path therebetween.

2. In a coaxial cable connector according to claim 1, wherein said seal member is in the form of an O-ring.

3. In a coaxial cable connector according to claim 1, wherein said seal member is sized to fill any space between said sleeve body, said coupling member and said second annular end.

4. In a coaxial cable connector according to claim 1, wherein said connector includes a connector body and an annular extension wall in surrounding relation to the end of said coaxial cable, said extension wall increasing in thickness at its juncture with said connector body.

5. In a coaxial cable connector according to claim 1, said wall portion extending from said first annular end toward said second annular end and terminating in a radially outwardly extending lip in flush engagement with said second annular end.

6. In a coaxial cable connector according to claim 2, said first and second annular ends being of a corresponding wall thickness and diameter, and a radially outer surface diverges forwardly away from said second annular end.

7. An end connector for connecting an end of a coaxial cable to a terminal post wherein said cable has inner and outer concentric conductors separated by an annular dielectric, and a portion of said outer conductor being exposed at the end of said cable, said connector comprising:

(a) inner and outer spaced concentric coaxial sleeves, said inner of said sleeves being sized for insertion of said inner conductor and said annular dielectric therein, said outer sleeve being sized for insertion of said outer conductor through one end of said connector between said inner and outer sleeves;

(b) said inner sleeve having a forward end wall portion provided with a radially outwardly directed circumferential groove;

(c) a coupling member between said inner of said sleeves and said post wherein rotation of said coupling member will draw said wall portion into flush engagement with a correspondingly sized annular end wall of said port; and

(d) an annular compressible seal interposed between said wall portion, said coupling member and said port, said seal being of a size greater than said groove and being partially compressed into said groove when said wall portion is drawn into flush engagement with said annular end.

8. An end connector according to claim 7, wherein said seal member is in the form of an O-ring sized to fill any space between said inner sleeve, said coupling member and said annular end.

9. An end connector according to claim 7, wherein said outer sleeve includes a connector body abutting one end of said coupling member and an extension wall extending rearwardly from said connector body in surrounding relation to the end of said coaxial cable, said extension wall increasing in thickness at its juncture with said connector body.

10. An end connector according to claim 7, wherein said coupling member and said inner sleeve have interfitting shoulder portions defining a common radial wall surface on one side of said groove.

11. An end connector according to claim 10, wherein said coupling member is rotatable with respect to said inner sleeve.

12. In a coaxial cable connector for connection to a terminal port wherein an annular connector sleeve assists in retaining an end of a coaxial cable, and a coupling member draws a first annular end of said sleeve into flush engagement with a correspondingly sized second annular end of said port, the improvement comprising:

said first annular end including a forwardly extending wall portion provided with a ledge; and

an annular seal interposed between said ledge and said coupling member, said seal being compressed between said ledge and said coupling member when said wall portion is drawn into flush engagement with said second annular end to establish an electrically conductive path therebetween.

13. In a coaxial cable connector according to claim 12, said ledge extending from said first annular end toward said second annular end and terminating in a radially outwardly extending lip in flush engagement with said second annular end.

14. In a coaxial cable connector according to claim 12, wherein said seal member is in the form of an O-ring sized to fill any space between said sleeve body, said coupling member and said second annular end.

15. In a coaxial cable connector according to claim 12, wherein said connector includes a connector body and an annular extension wall in surrounding relation to the end of said coaxial cable, said extension wall increasing in thickness at its juncture with said connector body.