Device and methods for armoring heat shrink kits for impact and flammability protection

Patent metadata

Field	Value
Publication number	US-10723064-B2
Application number	US-201916599953-A
Country	US
Kind code	B2
Filing date	Oct 11, 2019
Priority date	Oct 11, 2018
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

An armor for a heat shrink kit for joining a first length of heating cable and a second length of heating cable. The armor includes a spring configured to be positioned over at least a portion of the heat shrink kit, a first fastener configured to couple the spring to at least one of the first length of heating cable and the heat shrink kit, and a second fastener configured to couple the spring to at least one of the second length of heating cable and the heat shrink kit. The armor is configured to provide impact protection to the heat shrink kit.

First claim

What is claimed is:

1. An armor for a heat shrink kit for joining a first length of heating cable and a second length of heating cable, the heat shrink kit comprising a heat shrink tubing and at least one mechanical connector configured to join the first length of heating cable and the second length of heating cable, and the armor comprising: a spring configured to be positioned over at least a portion of the heat shrink kit; a first fastener configured to couple the spring to at least one of the first length of heating cable and the heat shrink kit; and a second fastener configured to couple the spring to at least one of the second length of heating cable and the heat shrink kit, wherein the armor is configured to provide impact protection to the heat shrink kit, and wherein an inner diameter of the spring is about 1.1 to 1.5 times as large as a largest cross sectional dimension of the heat shrink tubing.

2. The armor of claim 1 , wherein the first length of heating cable is a low smoke zero halogen heating cable.

3. The armor of claim 1 , wherein the spring is a compression spring.

4. The armor of claim 1 , wherein the spring is configured to be positioned over connectors included in the heat shrink kit.

5. The armor of claim 1 , wherein the spring comprises steel.

6. The armor of claim 1 , wherein the first fastener is a metallic cable tie.

7. The armor of claim 1 , wherein the spring is configured to provide impact protection to the heat shrink kit at temperatures of about −20° Celsius.

8. The armor of claim 1 , wherein the heat shrink tubing comprises at least one of fluorinated ethylene propylene, polytetrafluoroethylene, Kynar, polyvinyl chloride, neoprene, silicone elastomer, Viton, and polyvinylidene difluoride.

9. The armor of claim 1 , wherein the at least one mechanical connector includes a crimp connector.

10. The armor of claim 1 , wherein the spring has about five to ten turns per inch.

11. The armor of claim 1 , wherein the spring does not comprise an electrical insulator.

12. The armor of claim 1 , wherein the armor is configured to provide flammability protection to the heat shrink kit.

13. An armored heat shrink assembly comprising: at least one mechanical connector configured to electrically couple a first length of heating cable to a second length of heating cable at a splice; a heat shrink tubing configured to slide over the splice with the at least one mechanical connector coupled to the first and second lengths of heating cable, and to be shrunk over the splice to electrically insulate the splice; a spring configured to be positioned over at least a portion of the heat shrink tubing; and at least one fastener configured to couple the spring to at least one of the first length of heating cable, the second length of heating cable, and the heat shrink tubing, at a position whereby the spring provides impact protection to the splice, wherein an inner diameter of the spring is about 1.1 to 1.5 times as large as a largest cross sectional dimension of the heat shrink tubing.

14. The armor of claim 13 , wherein the spring is a compression spring.

15. The armor of claim 13 , wherein the spring is configured to be positioned over the at least one mechanical connector.

16. An armor for a heat shrink kit for joining a first length of heating cable and a second length of heating cable, the heat shrink kit comprising a heat shrink tubing and at least one mechanical connector configured to electrically couple the first length of heating cable and the second length of heating cable, and the armor comprising: a metal spring configured to be positioned over at least a portion of the heat shrink kit; a first fastener configured to couple the spring to at least one of the first length of heating cable and the heat shrink kit; and a second fastener configured to couple the spring to at least one of the second length of heating cable and the heat shrink kit, wherein the armor is configured to provide impact protection to the heat shrink kit at temperatures of about −20° Celsius, and wherein an inner diameter of the spring is about 1.1 to 1.5 times as large as a largest cross sectional dimension of the heat shrink tubing.

Assignees

• Nvent Services Gmbh

Inventors

• Dong Wesley
• Depolo Wade

Classifications

• B29C63/18

  using tubular layers or sheathings (B29C63/26 {and B29C63/38} take precedence; {placing tubular labels around rigid containers B65C3/065}) · CPC title

• H02G15/1806

  Heat shrinkable sleeves (insulation of electrical connections using a heat shrinking insulating sleeve H01R4/72) · CPC title

• H05B3/06

  Heater elements structurally combined with coupling elements or holders · CPC title

• H05B3/56 Primary

  Heating cables · CPC title

• H01B13/26

  by winding, braiding or longitudinal lapping · CPC title