Patents by Inventor John C. Polonchak

John C. Polonchak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Heater, humidifier or fan including a circuit for controlling the output thereof
    Patent number: 6204623
    Abstract: A heater, humidifier or fan has a control circuit including a microcontroller having an algorithm for controlling power to the appliance. The power to the appliance is varied in accordance with a target temperature/humidity signal and an actual temperature/humidity signal. Preferably, a sensor electrically connected to a clock oscillator input of the microcontroller is used to vary the clock oscillator frequency in response to changes in ambient temperature/humidity. The frequency of the clock oscillator varies in response to changes in temperature/humidity and the microcontroller in response to the frequency of the clock oscillator variably controls the power to the appliance.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 20, 2001
    Assignee: The Holmes Group, Inc.
    Inventors: William Levy, Robert A. Sherwood, John C. Polonchak