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US 7,093,416 B2Granted
Cable and method of making the same
Assignee3M Innovative Properties Company
InventorsDouglas E. Johnson, Colin McCullough, Herve E. Deve
Life of this patent
Estimating the term…
Abstract
Cable comprising at least one of aramid, ceramic, boron, poly(p-phenylene-2.6-benzobisoxazole), graphite, carbon, titanium, tungsten, or shape memory alloy and having a stress parameter not greater than 5 MPa. Embodiments of the cable are useful, for example, as an overhead power transmission line.
Claims12
A cable, comprising:
- a longitudinal core having a thermal expansion coefficient and comprising at least one of aramid, ceramic, boron, poly(p-phenylene-2,6-benzobisoxazole), graphite, carbon, titanium, tungsten, or shape memory alloy;
- and
- a plurality of wires collectively having a thermal expansion coefficient greater than the thermal expansion coefficient of the core, wherein the plurality of wires comprise at least one of aluminum wires, copper wires, aluminum alloy wires, or copper alloy wires, and wherein the plurality of wires are stranded around the core, wherein the cable has a stress parameter not greater than 5 MPa, with the proviso that if the longitudinal core comprises metal matrix composite wire, the core separately comprises at least one of aramid, ceramic, boron, poly(p-phenylene-2,6-benzobisoxazole), graphite, carbon, titanium, tungsten, or shape memory alloy.
Dependencies are inferred from the claim text.