Patents by Inventor Gregory A. Kern

Gregory A. Kern 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: 8665610
    Abstract: The present invention, a modified zero voltage transition (ZVT) full bridge converter, is an isolated dc/dc converter which can operate with high efficiency and high reliability in applications requiring a low input voltage and high output voltage.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: March 4, 2014
    Assignee: Greenray Inc.
    Inventor: Gregory A. Kern
  • Publication number: 20110080756
    Abstract: The present invention, a modified zero voltage transition (ZVT) full bridge converter, is an isolated dc/dc converter which can operate with high efficiency and high reliability in applications requiring a low input voltage and high output voltage.
    Type: Application
    Filed: September 24, 2010
    Publication date: April 7, 2011
    Inventor: Gregory A. Kern
  • Patent number: 6282104
    Abstract: A control system is provided for positioning between a power source, such as a distributed generator, and a utility or utility grid to control the injection of dc current and even harmonics into the utility or utility grid. In one embodiment, the control system is particularly suited for grid-tied operation and includes a power converter for acting as an ac current source by converting power received from the power source to ac current for transmittal to the utility. The control system further includes a voltage transformer between the power converter and the utility connection to block dc current and isolate the power source from the utility. A feedback control loop is included in the control system to measure, with a pair of current transformers, dc current and even harmonics in the current flowing into (power converter side) and out (utility side) of the voltage transformer.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: August 28, 2001
    Assignee: Applied Power Corporation
    Inventor: Gregory A. Kern
  • Patent number: 6081104
    Abstract: A system for delivering power to a battery and to a load includes a power source that supplies energy to the battery and the load. The battery can be charged by the power source and used to supply energy or power to the load when the power source is unable to provide sufficient energy and power to the load. The system reduces injection of DC current into the load and, as a result, extends the operation life of the load, particularly if the load is an AC lighting or lamp system. The system operates the load in an optimal manner such that battery storage is maintained at near full charge, yet the lighting load operates for a maximum number of hours per night. The benefit of the system is to prevent early failure of either the lighting load or the battery.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: June 27, 2000
    Assignee: Applied Power Corporation
    Inventor: Gregory A. Kern
  • Patent number: 5510833
    Abstract: A system for transforming coordinate systems in an automated video monitor alignment system includes a camera and computer to capture an image of the display bezel surrounding the cathode ray tube and of the image displayed on the CRT. Three dimensional models of the CRT tube and display bezel are used to compute and compensate for camera perspective. Camera pixel data can then be transformed to `flat plane` coordinates. When the relative orientation of the camera and CRT are corrected for, the effects of parallax can be eliminated, allowing more accurate inspection, measurement, and lower cost fixturing on the production line. Thus, an accurate coordinate transformation from a camera-referenced coordinate system to a monitor-referenced coordinate system is made.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: April 23, 1996
    Assignee: Display Laboratories Inc.
    Inventors: James R. Webb, Gregory A. Kern