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US 11,683,864 B1Granted
Braided stainless steel jacketed flexible heating cable
AssigneeThermal-Flex Systems, Inc.
InventorDaniel A. Santagata
Life of this patent
Estimating the term…
Abstract
A heating cable that is usable in train track applications where railroad switches are subject to icing during cold weather, the heating cable including a coiled resistance heating wire contained in an electrical insulator, which is contained in an inner braided metal sleeve, which is contained in a flexible metal hose, which is contained in an outer braided metal sleeve.
Claims21
An electrical heating cable having a proximal and distal end, said heating cable comprising:
- a tube sleeve positioned at said proximal end of said heating cable and enclosing:
- a first electrical conductor having a first electrical insulation positioned within said annular tube said first electrical conductor having a first contact point;
- a second electrical conductor having a second electrical insulation positioned within said annular tube said second electrical conductor having a second contact point;
- a resistance heating element having a first end and a second end that couples to both the first and the second electrical conductors, said resistance heating element extending as a first section from the proximal end of the heating cable to the distal end of the heating cable and as a second section from the distal end of the heating cable to the proximal end of the heating cable;
- a third electrical insulation enclosing said first section of said resistance heating element;
- a fourth electrical insulation enclosing said second section of said resistance heating element;
- a first braided metal sleeve enclosing both said third and fourth insulations;
- a flexible metal hose enclosing said first braided metal sleeve;
- and
- a second braided metal sleeve enclosing said metal hose;
- said tube sleeve receiving and being bonded to an end of said second braided metal sleeve.
8 more elements
An electrical heating cable formed according to the process comprising the steps of:
- providing a first electrical conductor having a first insulation;
- providing a second electrical conductor having a second insulation;
- providing a resistance heating element having a first end and a second end;
- coupling said first electrical conductor to said first end of said resistance heating element;
- coupling said second electrical conductor to said second end of said resistance heating element;
- extending said resistance heating element as a first section from a proximal end of the heating cable to a distal end of the heating cable;
- extending said resistance heating element as a second section from the distal end of the heating cable to the proximal end of the heating cable;
- said resistance heating element formed as a continuous wire;
- enclosing said first section of said resistance heating element with a third insulation;
- enclosing said second section of said resistance heating element with a fourth insulation;
- enclosing both said third and fourth insulations in an inner metal braided sleeve;
- enclosing said inner metal braided sleeve in a flexible metal hose;
- enclosing said flexible metal hose in an outer metal braided sleeve;
- and
- bonding a tube sleeve to an end of said outer metal braided sleeve.
12 more elements
An electrical heating cable having a proximal end and a distal end with a length therebetween, said heating cable comprising:
- one or more resistance heating wires extending from a first power connection at the proximal end of the heating cable along the length of the heating cable to the distal end of the heating cable and back from the distal end of the heating cable to a second power connection at the proximal end of the heating cable;
- an electrical insulation containing the one or more resistance heating wires and the one or more resistance heating wires;
- an inner braided metal sleeve containing the electrical insulation and the one or more resistance heating wires;
- a flexible metal hose containing the inner braided metal sleeve and the electrical insulation and the one or more resistance heating wires;
- an outer braided metal sleeve containing the metal hose and the inner braided metal sleeve and the electrical insulation and the one or more resistance heating wires;
- a tube sleeve positioned near the proximal end of the heating cable and enclosing the first power connection and the second power connection;
- a first power cable electrically and mechanically connected to the first power connection;
- a second power cable electrically and mechanically connected to the second power connection;
- wherein the outer braided metal sleeve has a length greater than the one or more resistance heating wires, with a distal end thereof extending beyond the resistance heating wires and folded over and welded to the outer braided metal sleeve to form a loop at the distal end of the heating cable.
6 more elements
Dependencies are inferred from the claim text.