Telecommunication cable splices

• US 4,152,539 A
• Filed: 10/21/1977
• Issued: 05/01/1979
• Est. Priority Date: 10/21/1977
• Status: Expired due to Term

• Current Assignee: Northern Telecom Limited (Nortel Networks Corporation)
• Original Assignee: Northern Telecom Limited (Nortel Networks Corporation)
• Inventors: Ashby, Terence A., Charlebois, Leonard J.
• Primary Examiner(s): Kozma, Thomas J.
• Application Number:
  US05/844,315
• Time in Patent Office: 557 Days
• Field of Search: 174/71 R, 174/72 R, 174/88 R, 156/49, 156/51
• US Class Current: 174/72.00R
• CPC Class Codes: H02G 15/117 for multiconductor cables

Abstract

The invention provides an air tight and water tight seal around a telephone cable that has been opened and has a number of pairs selected and spliced to wires or cables exiting from the splice. The seal extends over and around the cables exiting from the spliced joint. This is accomplished by encapsulating the cable with a molten material which seals to the cable sheaths.

Claims

1. In a telecommunication cable a splice comprising:

a first cable with a slit through an outer plastic sheath and inner metallic sheaths to provide access to inner conductors;

a second cable, with an outer plastic sheath and inner metallic sheaths removed from a portion of the end of the second cable to provide access to the inner conductors;

a ground lug connected through the sheaths of said first cable and providing electrical contact to said metallic sheath of said first cable;

a first connection between said ground lug and one of said inner conductors of said second cable provided for grounding purposes;

a second connection between a first pair of conductors from said first cable and a second pair of conductors from said second cable;

a plastic liner inserted into said slit to cover said inner conductors, said first pair of conductors protruding through an opening in said liner;

a layer of sealing tape surrounding said first cable and connections to provide support therefor;

a molded encapsulation of plastic material surrounding said wrapped portion and surrounding portions of said first and second cables encompassing an area of undisturbed sheath on each cable;

the plastic material forming a moisture proof and air proof seal with the said cable sheaths.

2. In a splice, as claimed in claim 1, wherein the plastic encapsulant material is polyethylene, and said cable sheaths are of polyethylene, and the polyethylene encapsulant is bonded to the cable sheaths.

3. In a splice, as claimed in claim 1, including four of said second cables, each of said second cables connected to a separate pair of inner conductors of said first cable.