Multiple cable adapter and splice case including the same

• US 4,095,044 A
• Filed: 10/26/1976
• Issued: 06/13/1978
• Est. Priority Date: 10/26/1976
• Status: Expired due to Term

• Current Assignee: Raychem Limited (TE Connectivity Limited)
• Original Assignee: Raychem Limited (TE Connectivity Limited)
• Inventors: Horsma, David August, De Blauwe, Francis
• Primary Examiner(s): Askin, Laramie E.
• Application Number:
  US05/735,587
• Time in Patent Office: 595 Days
• Field of Search: 174/21 R, 174/22 R, 174/77 R, 174/84 R, 174/88 R, 174/91, 174/92, 174/93, 174/138 F, 174/DIG. 8, 277/5, 277/12, 277/22, 277/26, 277/DIG. 6
• US Class Current: 174/138.00F
• CPC Class Codes: H02G 15/013 Sealing means for cable inlets inlets for cables filled with, or surrounded by, gas or oil H02G15/32
• CPC Class Codes: H02G 15/113 Boxes split longitudinally in main cable direction
• CPC Class Codes: Y10S 277/919 Seal including electrical feature
• CPC Class Codes: Y10S 277/93 Seal including heating or cooling feature

Abstract

A splice case is disclosed providing sealed protection for splices such as in telephone cable situated in adverse environmental conditions. The case includes a shell defining a cavity for enclosure of a splice. The shell is longitudinally split and includes openings at the ends thereof along the longitudinal split for receiving incoming cable. Thermally responsive sealant extends along the longitudinal split and a heating element is provided for causing the sealant to effectively seal the enclosed splice. A multiple cable adapter of thermally responsive sealant is sized to fit within a cable opening in the splice case and includes a plurality of longitudinally extending channels for accommodation of multiple incoming cables. Sheets of material exhibiting high thermal conductivity extend from the adapter such that the heat of the heating elements may be conveyed to the body of the adapter.

Claims

1. A splice case comprising

a shell defining a cavity therein for enclosing a splice, said shell including a longitudinal split and having an opening at one end thereof along said longitudinal split to receive in-coming cable;

a thermally responsive sealant positioned along said longitudinal split;

a heating element positioned in said shell along said longitudinal split, said thermally responsive sealant being outwardly of said heating element to seal said shell upon heating of said heating element; and

an adapter of thermally responsive sealant sized to fit in said opening, said adapter having a plurality of channels extending the length of said adapter for receipt of cables extending into said shell and a sheet exhibiting high thermal conductivity extending from said insert into said split in said shell for heat conduction from said heating element to said adapter.

2. The splice case of claim 1 wherein said sheet is a plate extending centrally through the body of said adapter and extending laterally therefrom.

3. The splice case of claim 1 wherein said sheet is a foil of thermally conductive material positioned within one of said plurality of channels and extending outwardly therefrom.

4. The splice case of claim 3 wherein said foil includes a layer of heat responsive sealant on a first side thereof, said foil being bonded to said adapter on the other side thereof.

5. The splice case of claim 1 wherein said adapter is of polyethylene copolymer based adhesive rubber.

6. An adapter for sealing a plurality of cables in an access opening of a splice case, comprising

a body of hot melt sealant sized to fit in the access opening of the splice case, said body having a plurality of channels extending the length thereof for receipt of cables extending to the splice case, and a sheet exhibiting high thermal conductivity extending from said body outwardly to enhance thermal conductivity between the splice case and said body.

7. The adapter of claim 6 wherein said sheet is a plate extending centrally through the body of said adapter and extending laterally therefrom.

8. The splice case of claim 7 further including a foil positioned in each of said plurality of channels and extending outwardly therefrom.

9. The adapter of claim 6 wherein said sheet is a foil of thermally conductive material positioned within one of said plurality of channels and extending outwardly therefrom.

10. The adapter of claim 6 wherein said body is of polyethylene copolymer based adhesive rubber.