Patent ID: 7161462

Claim:
A resistor apparatus comprising: a first lead wire and a second lead wire, and a single resistor body separate from the first and second lead wires; the resistor body comprising a resistor core enclosed within a gas impermeable insulative layer; the first lead wire being electrically attached to a first end of the resistor core, and the second lead wire being electrically attached to a second end of the resistor core; and a flexible gas permeable substantially tubular containment casing formed of a woven material, fixed to at least one of the first and second lead wires, substantially enclosing the resistor body and spaced from the resistor body to prevent it from sliding relative to said resistor body, wherein the tubular containment casing has sufficient tensile strength and temperature resistance to contain broken pieces of the resistor body occurred when being overheated while permitting the escape of gas thereby avoiding a substantial pressure build-up within the casing.