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. 29, 2003
Filed:
Nov. 11, 1998
Applicant:
Inventors:
Simon P. Griffiths, Columbus, MS (US);
Herbert G. Ray, Columbus, MS (US);
Assignee:
Emerson Electric Co., St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 3/68 ;
U.S. Cl.
CPC ...
H05B 3/68 ;
Abstract
An improved heating unit ( ) used in a cooktop ( ). Operation of the heating unit is by a controller ( ). An electric current is applied to a composition heating element ( ). The heating element is supported on a cake ( ) of insulation material installed in a pan ( ) located beneath a glasstop ( ) of the cooktop. A thermal sensor ( ) senses the temperature of the heating element and supplies an indication of the heating element temperature to the controller which changes the amount of current supplied to the heating element as a function of the sensed temperature.