The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 1991
Filed:
Sep. 08, 1989
Barry D Batcheller, West Fargo, ND (US);
Kevin L Brekkestran, Fargo, ND (US);
Roger L Minch, Fargo, ND (US);
Environwear, Inc., Fargo, ND (US);
Abstract
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.