Electric heating – Heating devices – With current connection and/or disconnection means
Reexamination Certificate
2007-02-20
2007-02-20
Evans, Robin (Department: 3742)
Electric heating
Heating devices
With current connection and/or disconnection means
C219S494000, C219S482000, C219S542000, C219S546000, C374S110000, C374S182000, C392S360000, C392S365000, C392S379000, C392S478000
Reexamination Certificate
active
11161829
ABSTRACT:
A heater is provided that has a temperature sensing control system which can be used for both temperature control and over-temperature protection against element burnout. The temperature control system is comprised of an inlet temperature sensing assembly positioned at the inlet to the heater element and an exit thermocouple positioned in the exit end of the heater element. The exit thermocouple may be used for control the heater temperature and provide over-temperature protection. The inlet temperature sensing assembly is used to detect low or no air flow conditions which could lead to heater element failure.
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Arold Jonathan B.
Frappier Michael J.
Gosselin William H.
Stark Joseph P.
Clark Robert F.
Evans Robin
Osram Sylvania Inc.
Ralis Stephen J.
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