Flexible cable with structurally enhanced conductors
AssigneeSouthwire Company
InventorRichard Temblador
Life of this patent
Estimating the term…
Abstract
In an electrical cable of the type having an outer sheath enclosing a conductor assembly comprising a plurality of insulated conductors disposed within a binder, the binder having a crush resistance for protecting the insulated conductors, an improvement in which a strength enhancer is applied such that the binder can be removed without decreasing a crush resistance of the electrical cable.
Claims24
An electrical cable having an outermost sheath, the electrical cable comprising:
- a conductor assembly including at least one insulated conductor disposed within the outermost sheath,
- the insulated conductor consisting of an outermost surrounding layer without an additional protective covering about the outermost surrounding layer, the outermost surrounding layer having a lubricant, the outmost surrounding layer being in direct contact with the outermost sheath substantially along the length of the at least one conductor and the outermost sheath;
- the combination of the outermost surrounding layer and the lubricant replacing any further protective covering between the at least one conductor and the outermost sheath such that the outermost surrounding layer maintains the crush and impact resistance as required by UL 1569 second edition, revision of Sep. 10, 1998 without the electrical cable having the further protective covering between the conductor and the outermost sheath.
An electrical cable having an outermost sheath, the electrical cable comprising:
- a grounding conductor and a conductor assembly including at least one insulated conductor, the grounding conductor and the insulated conductor disposed within the outermost sheath;
- wherein the insulated conductor includes an outermost surrounding layer without an additional protective covering about the outermost surrounding layer, the outermost surrounding layer having a strength enhancer, the strength enhancer including 0.25-0.85% of erucamide and a stearyl erucamide, the outmost surrounding layer being in direct contact with the outermost sheath substantially along the length of the at least one conductor and the outermost sheath;
- the combination of the outermost surrounding layer and the strength enhancer replacing any further protective covering between the at least one conductor and the outermost sheath such that the outermost surrounding layer maintains the crush and impact resistance as required by UL 1569 second edition, revision of Sep. 10, 1998 without the electrical cable having the further protective covering between the conductor and the outermost sheath.
An electrical cable comprising:
- an outer metallic sheath conductively contacting a bare grounding conductor disposed within the metallic outer sheath;
- an insulated conductor consisting of an outer layer without an additional protective covering between the outer layer and the metallic outer sheath, the outer layer having a lubricant, the outer layer of the insulated conductor remaining in direct contact with the metallic outer sheath, and substantially along the length of the insulated conductor and the metallic outer sheath,
- the lubricant including 0.25-0.85% of erucamide and a stearyl erucamide such that the electrical cable maintains the crush and impact resistance requirements of UL 1569 second edition, revision of Sep. 10, 1998 without any additional cover between the insulated conductor and the metallic outer sheath.
An apparatus for protecting an electrical cable assembly including one or more insulated conductors, each insulated conductor consisting of a single outer surrounding layer, the apparatus comprising:
- an outermost metallic sheath surrounding the electrical cable assembly;
- and
- the one or more insulated conductors, in which each single outer surrounding layer is in direct contact with the outermost metallic sheath substantially along the length of the electrical cable assembly and the outermost metallic sheath;
- and
- a strength enhancer formed of a high molecular weight silicone oil having a concentration by weight of at least 9% or a lubricant material including 0.25-0.85% of erucamide and a stearyl erucamide and applied in an amount such that the outermost metallic sheath and the electrical cable assembly meet the crush and impact resistance requirements in UL 1569 second edition, revision of Sep. 10, 1998 without any additional layer.
An electrical cable having a metallic outer sheath, the electrical cable comprising a conductor assembly including a bare grounding conductor and at least an electrically insulated conductor, the electrically insulated conductor being a Type XHHW consisting of a surrounding layer consisting of a cross-linked polyethylene material having a strength enhancer formed of a lubricant to maintain a crush and impact resistance of the conductor assembly when surrounded by the metallic outer sheath meeting the requirements of UL 1569 second edition, revision of Sep. 10, 1998 without requiring an additional protective covering between the surrounding layer and the metallic outer sheath,
- the single surrounding layer, comprising the cross-linked polyethylene material and the strength enhancer being in direct contact with the metallic outer sheath and substantially along the length of the electrically insulated conductor and the metallic outer sheath.
An electrical cable having a metallic outer sheath, the electrical cable comprising:
- a conductor assembly, including a bare grounding conductor and at least an electrically insulated conductor contacting the bare grounding conductor, the electrically insulated conductor being a Type THHN consisting of a surrounding layer, the surrounding layer consisting of an outer portion of a nylon material around an inner portion of a polyvinylchloride material, and
- the outer portion having strength enhancer formed of a lubricant in an amount to maintain a crush and impact resistance of the conductor assembly when surrounded by the metallic outer sheath meeting the requirements of UL 1569 second edition, revision of Sep. 10, 1998 without requiring an additional protective covering between the surrounding layer and the metallic outer sheath;
- and
- the surrounding layer comprising the strength enhancer being in direct contact with the metallic outer sheath, and substantially along the length of the conductor and the metallic outer sheath.
Dependencies are inferred from the claim text.