Flame resistant cable structure
OwnerMichael P. Mennone, Robert A. Gehminventors
Life of this patent
Estimating the term…
Abstract
A flame resistant electric cable capable of resisting temperatures in the neighborhood of 1000° C. comprising an electrical conductor comprising electrical wire and a tubular member made of a crosslinkable silicone elastomer which preferably includes a mineral filler. This is followed by a metal/polymer film shield enclosing the conductor which metal has a melting temperature above that temperature at which the elastomer undergoes crosslinking. Finally, the cable structure is surrounded within a polymer jacket, wherein the cable is observed to satisfy UL 2196 fire endurance testing requirements including hose spray without the need for additional mechanical protection.
Claims15
A flame resistant electric cable capable of resisting temperatures of about 1000° C. for about 2 hours and satisfying UL 2196 performance testing requirements including hose spray without the need for additional mechanical protection or the need for a layer of braided inorganic material, comprising:
- (a) an electrical conductor comprising electrical wire and a tubular member made of silicone elastomer surrounding said electrical wire, said silicone elastomer capable of crosslinking at elevated temperature;
- (b) a metallic/polymer film shield enclosing said conductor;
- and
- (c) a polymer resin.
A flame resistant electric cable capable of resisting temperatures in the neighborhood of 1000° C. and satisfying UL 2196 performance testing requirements including hose spray without the need for additional mechanical protection, comprising:
- (a) an electrical conductor comprising electrical wire and a tubular member made of crosslinkable silicone elastomer surrounding said electrical wire, said elastomer containing a mineral additive;
- (b) a copper/polyethylene terephthalate film shield enclosing said conductor, wherein said copper film has a thickness between about 0.6-1.2 mils;
- and
- (c) a non-halogenated polyolefin comprising an ethylene/vinylacetate copolymer containing Al2O3/3H2O.
A flame resistant electric cable capable of resisting temperatures of about 1000° C. for about 2 hours and satisfying UL 2196 performance testing requirements including hose spray without the need for additional mechanical protection or the need for a layer of braided inorganic material, comprising:
- (a) an electrical conductor comprising electrical wire and a tubular member made of silicone elastomer surrounding said electrical wire, said silicone elastomer capable of crosslinking at elevated temperature;
- (b) a shield layer enclosing said conductor selected from the group consisting of mica, ceramic, aromatic polyamide, silica or mixture thereof;
- and
- (c) a polymer resin
- wherein said shield layer does does not melt at those elevated temperatures wherein said silicon elastomer is capable of crosslinking.
Dependencies are inferred from the claim text.