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. 17, 1979
Filed:
Apr. 04, 1977
Bohdan Hurko, Louisville, KY (US);
General Electric Company, Louisville, KY (US);
Abstract
A flat plate surface heating unit or cooktop having a solid utensil-supporting plate that is heated by a resistive foil heating element that is bonded to a flexible, ceramic fiber paper substrate by a high temperature inorganic cement of high thermal conductivity and high electrical resistivity. The cement is formed in an electrically insulating layer that overlies the foil, and this cement hardens before the cement surface is applied against the underside of the cover plate so that the cement is not bonded to the cover plate. The soft, fibrous nature of the ceramic fiber paper substrate allows free expansion of the foil during thermal cycling. The relatively high thermal conductivity layer provides good heat transfer from the foil heating element to the utensil-supporting plate for improved efficiency.