Method of sealing and repairing electrical cables

• US 4,666,537 A
• Filed: 12/29/1981
• Issued: 05/19/1987
• Est. Priority Date: 04/24/1980
• Status: Expired due to Term

• Current Assignee: Thomas & Betts International Incorporated (ABB Limited)
• Original Assignee: Thomas & Betts Corporation (ABB Limited)
• Inventors: Dienes, Zoltan B.
• Primary Examiner(s): Dawson, Robert A.
• Application Number:
  US06/335,399
• Time in Patent Office: 1,967 Days
• Field of Search: 24/304, 24/DIG. 11, 156/49, 156/52, 156/48, 156/54, 156/56, 156/94, 174/5 R, 174/41, 174/70 A, 174/88 R, 174/92, 174/136, 174/138 F, 248/68 R, 248/74 A, 248/74 B, 248/74 R
• US Class Current: 156/48
• CPC Class Codes: H02G 15/117 for multiconductor cables
• CPC Class Codes: H02G 15/18 protected by sleeves, e.g. for communication cable two-part covers H02G15/10 ; preforms having internal stresses B29C61/00

Abstract

An exposed portion of an electrical cable is sealed by applying a sealant material to the exposed cable and then placing the ends of a split unitary cover over the sealant material in overlapped disposition. The cover is then compressed into contact with the sealant material. In repairing a damaged cable sheath, a reinforcing member may be placed over the sealant material prior to placing the cover thereover.

Claims

1. A method of sealably covering an exposed electrical cable comprising the steps of:

applying sealant material onto said exposed cable;

placing the ends of a split unitary, tubular protective cover having a sealant on one surface thereof over the sealant material in overlapped disposition such that said sealant on said cover surface is disposed between the overlapping cover ends; and

perimetrically compressing said split cover about said cable such that said sealant contacts said sealant material and such that said sealant disposed between said overlapping ends joins such ends in sealed relation.

2. A method according to claim 1, wherein said sealant material is applied by wrapping sealant tape over said exposed cable.

3. A method according to claim 1, wherein said sealant material is applied by disposing a quantity of such material onto the exposed cable.

4. A method according to claim 1, wherein said sealant material is applied by first wrapping sealant tape over said exposed cable and then by disposing an additional quantity of sealant material onto said tape.

5. A method according to claim 1, wherein said split cover is generally cylindrical and is compressed radially by retentively maintaining clamping means circumscribingly about said cover.

6. A method of repairing a damaged electrical cable comprising the steps of:

applying sealant material onto said damaged cable;

placing a reinforcing member onto said sealant material;

placing the ends of a split, unitary, heat-cured protective cover having a sealant on one surface thereof over the reinforcing member in overlapped disposition such that said sealant is disposed between said cover and said reinforcing member; and

non-heatably compressing said split cover about said cable such that said sealant contacts said reinforcing member to provide a seal between said cover and said cable.

7. A method according to claim 6, wherein said reinforcing member is placed by wrapping a layer of reinforced material circumscribingly about said sealant material.

8. A method according to claim 6, wherein said compressing step is practiced by applying reopenable clamping means circumscribingly about said cover.

9. A method of sealably covering an exposed portion of an electrical cable comprising the steps of:

providing a generally cylindrical, split, unitary protective cover to have axial extent greater than said exposed cable portion, longitudinally extending ends of said split cover overlapping over a circumferential portion, said cover having a first sealant on its interior surface and a second sealant disposed between said overlapping ends;

placing said cover onto said cable such that the axial ends thereof extend axially beyond the exposed cable portion and such that said first sealant is adjacent said cable and said longitudinal ends are in overlapping relation with said second sealant disposed between such overlapping ends; and

radially, non-heatably compressing said cover about said cable such that said first sealant sealably contacts said cable and such that said second sealant joins said overlapping ends in sealed relation.

10. A method according to claim 9, wherein said first and second sealants are defined by a continuous layer of sealant on the interior surface of said cover.