Patents by Inventor Christopher C. Froah

Christopher C. Froah 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).

  • Microphone wash arm sensor
    Patent number: 5681401
    Abstract: A sensor is provided for sensing operational characteristics of a dishwasher. The sensor includes a microphone mounted within the door of the dishwasher. The microphone is connected through electrical circuitry to a microprocessor mounted within the door. The microphone is adapted to generate a signal in response to impingement of water from the rotating wash arms upon the inside of the door. The signal is sent to the microprocessor, which converts the signal into information regarding the rotational velocity of the wash arm. This information is processed to control the operational parameters of the dishwasher.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: October 28, 1997
    Assignee: Maytag Corporation
    Inventors: Douglas W. Gardner, Christopher C. Froah