Electric heating – Heating devices – Combined with diverse-type art device
Reexamination Certificate
2005-01-18
2005-01-18
Jeffery, John A. (Department: 3742)
Electric heating
Heating devices
Combined with diverse-type art device
C219S494000, C219S504000
Reexamination Certificate
active
06844524
ABSTRACT:
An electrically powered resistance heating handgrip includes a control circuit located within a hollow core that fits coaxially within the open end of a handlebar of a motorcycle or snowmobile. The control circuit is mounted on a thin, narrow, elongated printed circuit board and includes a microprocessor that is programmed to contain a lookup table of temperatures. A thermistor provides feedback signals to the microprocessor which compares temperature sensor feedback signals to a target temperature. The target temperature is established by a dial. The dial operates the wiper of a variable potentiometer to establish the target temperature. Heat is uniformly distributed by wrapping the heating element wire thereof about a thermally conductive sheet of aluminum, and encasing the wire within a temperature resistant dielectric sheathing.
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Downey John R.
Downey Jonathan B.
Downey Philip L.
Jeffery John A.
Thomas Charles H.
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