Patent · US Expired

Method for adjusting a limiting value of an operating temperature of a cooking unit and device for performing said method

US6218646A · kind A · utility

2Cited by

6References

16Claims

0Family size

Assignee

Schott Glas · DE

Inventors

Peter Nass · Mainz, DE
Harry Engelmann · Ingelheim am Rhein, DE
Roland Dudek · Bad Kreuznach, DE
Kurt Schaupert · Hofheim, DE

Key dates

Filing date	Nov 3, 1999
Grant date	Apr 17, 2001
Priority date	—
Expiry date	Nov 3, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2213/07
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Glass or glass-ceramic materials for a cooking surface of a modern cooking unit can only withstand a certain predetermined limited temperature/time load. In order to guarantee that the permissible temperature/time load is not exceeded during the guaranteed lifetime at a given "standard" usage frequency, a shut-off temperature must be determined by an operating temperature limiting device provided in the cooking unit. So that the full potential of the cooking unit in regard to the load that the cooking surface bears can be attained when the actual usage frequency is less than a nominal value or predetermined guideline, the method provides for a continuous measurement of the accumulated temperature/time load and for continuous determination of the shut-off temperature by comparison of the accumulated temperature/time load with the permissible load for the actual usage duration.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.