Patent ID: 7777156

Claim:
A method of forming an electric heating/warming fabric article, the method comprising: configuring a planar, sheet-form conductive layer element including a bus, formed of electrically conductive material selected from the group consisting of metallized textile, metallized plastic sheeting, and metal foil, into an electrically conductive circuit with shape corresponding to a selected surface region of a wearer's body and with one or more circuit regions of relatively higher resistivity among one or more circuit regions of relatively lower resistivity, the one or more circuit regions of relatively higher resistivity positioned for correlation with one or more selected heating regions of the wearer's body; attaching said circuit to at least one of a first broad surface and a second broad surface of a fabric body in an arrangement corresponding to the selected surface region and in correlation with the one or more selected heating regions; and, upon application of electrical current to said circuit, producing localized heating in the one or more circuit regions of relatively higher resistivity of the circuit attached upon the fabric body for preferential heating of the one or more selected heating regions of the wearer's body.