Patents by Inventor William R. Drake

William R. Drake 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).

  • Shore power cord ground wire current detector
    Patent number: 7994795
    Abstract: A current detector and indicator unit are coupled to a shore power cord for monitoring for corrosion-causing galvanic current on the ground wire of the power cord. A current transducer coupled to the ground wire senses current and provides a signal corresponding to the magnitude of the sensed current to a microcontroller. The microcontroller compares the magnitude of the current signal to one or more predetermined thresholds and outputs signals to an indicator unit to display the level of galvanic activity accordingly.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: August 9, 2011
    Assignee: Actuant Corporation
    Inventors: William R. Drake, John A. Kujawa
  • SHORE POWER CORD GROUND WIRE CURRENT DETECTOR
    Publication number: 20090160427
    Abstract: A current detector and indicator unit are coupled to a shore power cord for monitoring for corrosion-causing galvanic current on the ground wire of the power cord. A current transducer coupled to the ground wire senses current and provides a signal corresponding to the magnitude of the sensed current to a microcontroller. The microcontroller compares the magnitude of the current signal to one or more predetermined thresholds and outputs signals to an indicator unit to display the level of galvanic activity accordingly.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 25, 2009
    Inventors: William R. Drake, John A. Kujawa