Electric heating – Heating devices – With heating unit structure
Reexamination Certificate
2006-09-07
2009-10-13
Fuqua, Shawntina (Department: 3742)
Electric heating
Heating devices
With heating unit structure
C219S544000, C219S553000, C219S548000, C219S534000, C219S443100, C219S461100, C219S546000, C219S424000, C219S426000, C219S422000, C392S434000, C392S438000, C392S473000, C118S724000, C118S725000, C118S621000, C425S549000, C425S570000, C425S572000, C425S547000, C425S143000
Reexamination Certificate
active
07601935
ABSTRACT:
A hot runner nozzle heater system is provided with a layered heater in communication with a two-wire controller, wherein a resistive layer of the layered heater is both a heater element and a temperature sensor. The two-wire controller thus determines temperature of the layered heater using the resistance of the resistive layer and controls heater temperature through a power source.
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Fennewald Kenneth F.
McDowell, III William A.
Ptasienski Kevin
Steinhauser Louis P.
Brinks Hofer Gilson & Lione
Fuqua Shawntina
Watlow Electric Manufacturing Company
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