Patents by Inventor Joseph C. Perkinson

Joseph C. Perkinson 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).

  • Methods and apparatus for three-phase rectifier with lower voltage switches
    Patent number: 7751212
    Abstract: Methods and apparatus to provide a rectifier having a high power factor not limited by voltage ratings of switching devices. Methods and apparatus can include pairs of series-coupled switches coupled to a respective phase signal to, along with respective diode pairs, apportion voltage over a series of load capacitors coupled across the rectifier DC output terminals.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: July 6, 2010
    Assignee: Raytheon Company
    Inventor: Joseph C. Perkinson
  • METHODS AND APPARATUS FOR THREE-PHASE RECTIFIER WITH LOWER VOLTAGE SWITCHES
    Publication number: 20080259663
    Abstract: Methods and apparatus to provide a rectifier having a high power factor not limited by voltage ratings of switching devices. Methods and apparatus can include pairs of series-coupled switches coupled to a respective phase signal to, along with respective diode pairs, apportion voltage over a series of load capacitors coupled across the rectifier DC output terminals.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 23, 2008
    Inventor: Joseph C. Perkinson
  • Method and device for installing and removing a current transformer on and from a current-carrying power line
    Patent number: 6756776
    Abstract: A current transformer to be installed around a current-carrying conductor. The transformer has a split core with two parts, which can be opened to allow the transformer to be installed around or removed from the current-carrying conductor. A winding wound on the core is operatively connected to a switch so that the winding can be shorted prior to opening the split core when the transformer is removed from the current-carrying conductor in order to reduce the magnetic force holding the split core parts together. The winding is shorted by the switch prior to closing the split core parts when the transformer is installed around the conductor in order to minimize the damage to the core due to the induced magnetic force thereon. A mechanical tool is used to open or close the split-core parts. The switch can be linked to the tool for shorting and opening the winding.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: June 29, 2004
    Assignee: Amperion, Inc.
    Inventors: Joseph C. Perkinson, Scott D. Brown
  • Method and device for installing and removing a current transformer on and from a current-carrying power line
    Publication number: 20030222747
    Abstract: A current transformer to be installed around a current-carrying conductor. The transformer has a split core with two parts, which can be opened to allow the transformer to be installed around or removed from the current-carrying conductor. A winding wound on the core is operatively connected to a switch so that the winding can be shorted prior to opening the split core when the transformer is removed from the current-carrying conductor in order to reduce the magnetic force holding the split core parts together. The winding is shorted by the switch prior to closing the split core parts when the transformer is installed around the conductor in order to minimize the damage to the core due to the induced magnetic force thereon. A mechanical tool is used to open or close the split-core parts. The switch can be linked to the tool for shorting and opening the winding.
    Type: Application
    Filed: November 12, 2002
    Publication date: December 4, 2003
    Applicant: Amperion, Inc.
    Inventors: Joseph C. Perkinson, Scott D. Brown