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AssigneeLexmark International, Inc.
InventorsRUSSELL EDWARD LUCAS, WILLIAM ALAN MENK, JR., JERRY WAYNE SMITH, ERYK ZAGORSKI
Estimating the term…
Methods and apparatus include a hair iron having a controller and a heater between first and second arms movable relative to each other between open and closed positions. The controller connects or not the heater to a line voltage to heat hair when placed between the arms during use. A proportional-integral-derivative (PID) controller communicates with a thermistor measuring a current temperature of the heater and makes requests of the controller to operate the heater at a setpoint temperature. In various embodiments, the heater heats to full power during warm-up and operates thereafter at lower temperatures based on a reading of the line voltage and a time to adjust the current temperature to the desired setpoint temperature.
With a hair iron having a controller and a heater between first and second arms movable relative to each other between an open and closed position, the hair iron connecting to a line voltage so the heater heats hair when placed between the arms during use, a method for controlling heating, comprising:
With a hair iron having a controller and a heater between first and second arms movable relative to each other between an open and closed position, the hair iron connecting to a line voltage so the heater heats hair when placed between the arms during use, the hair iron further including a proportional-integral-derivative (PID) controller in communication with the controller and a thermistor measuring a current temperature of the heater, a method for controlling heating, comprising:
Dependencies are inferred from the claim text.