Environwear, Inc.

Roger L Minch

Barry Douglas Batcheller

Kevin L Brekkestran

An electrically heated, cold weather garment. The garment includes a lightweight, stretchable, form-fitting fabric for covering portions of the body of a wearer of the garment; a plurality of flexible, electrical heating wires cover stitched to the fabric by sewing; an electronic controller for controlling current flowing through each of the heating wires in a pulse-width modulated fashion, to thereby independently control the heat generated by each heating wire; a plurality of potentiometers for controlling the level of power supplied to each heating wire; and a master power level potentiometer for controlling the power supplied to each of the heating wires in a uniform and simultaneous fashion. In a first preferred embodiment the controller utilizes a combination of analog and digital-like signals to control in a pulse-width modulated fashion the current flow through the heating elements. In a second preferred embodiment the controller includes a microprocessor which is operable to sense changes in the temperature of the heating wires themselves, and to regulate automatically and independently the power supplied to each of the heating wires.

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Fargo, ND, United States of America

Roger L Minch