Patents by Inventor Marcus S. Goodwin

Marcus S. Goodwin 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).

  • Patent number: 7984859
    Abstract: A control apparatus for operating an exhaust fan in order to control humidity and odor in an enclosed confine includes a switch mounted within a path of electric power between an electric power source and the exhaust fan. A humidity sensor outputs a humidity signal defining level of relative humidity within the enclosed confine and a resistive voltage divider provides a reference voltage signal. A comparator compares the humidity signal with the reference signal and provides a control signal when a value of the humidity signal is equal to or greater than a value of the reference signal, the control signal causing the switch to supply the electric power to the exhaust fan. A timing circuit is activated by the control signal and is operable to maintain presence thereof for a predetermined period of time when the value of the humidity signal decreases below the value of the reference signal.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: July 26, 2011
    Inventors: Marcus S. Goodwin, Norman Risner
  • Publication number: 20100006661
    Abstract: A control apparatus for operating an exhaust fan in order to control humidity and odor in an enclosed confine includes a switch mounted within a path of electric power between an electric power source and the exhaust fan. A humidity sensor outputs a humidity signal defining level of relative humidity within the enclosed confine and a resistive voltage divider provides a reference voltage signal. A comparator compares the humidity signal with the reference signal and provides a control signal when a value of the humidity signal is equal to or greater than a value of the reference signal, the control signal causing the switch to supply the electric power to the exhaust fan. A timing circuit is activated by the control signal and is operable to maintain presence thereof for a predetermined period of time when the value of the humidity signal decreases below the value of the reference signal.
    Type: Application
    Filed: July 14, 2008
    Publication date: January 14, 2010
    Inventors: Marcus S. Goodwin, Norman Risner