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:
Apr. 16, 1991
Filed:
Sep. 08, 1989
Kevin L Brekkestran, Fargo, ND (US);
Barry D Batcheller, West Fargo, ND (US);
Environwear, Inc., Fargo, ND (US);
Abstract
An electrically heated fabric assembly for use with an electrically heated garment. The fabric assembly includes a lightweight, stretchable, form-fitting fabric made from polyphthalate and spandex fibers for covering various portions of the body of a wearer of the garment; and a plurality of flexible, electrical, heat generating wires arranged in a serpentine pattern on various portions of the fabric, and operable to generate heat in response to an electrical current flow through the heating wires. The heating wires are secured to the fabric by cover stitching, accomplished by sewing, to allow the fabric to retain its flexibility. The heating wires each include several conductor elements wound together in a spiral fashion, and each conductor element includes a core portion having wound therearound in a spiral fashion two tinsel-like copper conductors. The core portions each consist of several aromatic polyamide fibers of extremely high tensile strength. A plurality of winged connector assemblies operable to be sewably attached to the fabric are also included for removably connecting the heating wires to an external power source.