Electric heater
First Claim
1. An electric hotplate, having an insulator bearing at least one electrical heating resistor, comprising:
- a metal plate heatable by the at least one electrical heating resistor, having substantially flat upper and lower surfaces and a downwardly directed rim near its outer circumference, the rim and lower surface defining a space therebetween, and the upper surface forming a cooking surface for receiving cooking vessels placed thereon;
the insulator having a plurality of insulating layers, the at least one heating resistor being disposed on the upper surface of the uppermost layer;
a basket-shaped metal lattice surrounding the insulator about its outer surface and holding the plurality of insulating layers together, the insulator and metal lattice forming an indpendently positionable heater/insulator assembly; and
fastening means at the rim for engaging the metal lattice and holding the heater/insulator assembly in position at least partly in the space.
1 Assignment
0 Petitions
Accused Products
Abstract
An electric hotplate, having an insulator bearing at least one electrical heating resistor, comprising: a metal plate heatable by the at least one electrical heating resistor, having substantially flat upper and lower surfaces and a downwardly directed rim near its outer circumference, the rim and lower surface defining a space therebetween, and the upper surface forming a cooking surface for receiving cooking vessels placed thereon; the insulator having a plurality of insulating layers, the at least one heating resistor being disposed on the upper surface of the uppermost layer; a basket-shaped metal lattice surrounding the insulator about its outer surface and holding the plurality of insulating layers together, the insulator and metal lattice forming an independently positionable heater/insulator assembly; and, fasteners at the rim for engaging the metal lattice and holding the heater/insulator assembly in position at least partly in the space.
38 Citations
20 Claims
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1. An electric hotplate, having an insulator bearing at least one electrical heating resistor, comprising:
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a metal plate heatable by the at least one electrical heating resistor, having substantially flat upper and lower surfaces and a downwardly directed rim near its outer circumference, the rim and lower surface defining a space therebetween, and the upper surface forming a cooking surface for receiving cooking vessels placed thereon; the insulator having a plurality of insulating layers, the at least one heating resistor being disposed on the upper surface of the uppermost layer; a basket-shaped metal lattice surrounding the insulator about its outer surface and holding the plurality of insulating layers together, the insulator and metal lattice forming an indpendently positionable heater/insulator assembly; and fastening means at the rim for engaging the metal lattice and holding the heater/insulator assembly in position at least partly in the space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification