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:
Oct. 05, 1999
Filed:
May. 01, 1998
Kevin Ronald McWilliams, Stratford-upon-Avon, GB;
Ceramaspeed Limited, , GB;
Abstract
An electric heater (1) arranged beneath a glass-ceramic cook top (2) is controlled with the aid of a temperature sensor (7) for monitoring temperature at or adjacent to the glass-ceramic cook top. The sensor provides an electrical output as a function of temperature and permits monitoring, in time controlled manner, temperature at or adjacent to the glass-ceramic cook top. In a first stage the temperature of the glass-ceramic cook top (2) is permitted to exceed a predetermined continuous safe level (Y) for up to a predetermined maximum time period (X, W.sub.2, W) and such that a predetermined temporary safe level (Z) of temperature, in excess of the predetermined continuous safe level (Y), is not exceeded. In a second stage the heater (1) is regulated in accordance with the monitored temperature to achieve a selected temperature of the glass-ceramic cook top in a range up to the predetermined continuous safe level (Y) of temperature.