Patents by Inventor David J. Porter

David J. Porter 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: 11962132
    Abstract: A support bracket assembly for supporting a pair of bushing well interrupter devices provided within a transformer enclosure that encloses a transformer. The support bracket assembly includes a mounting bracket assembly rigidly secured to a parking stand on the enclosure and including a plurality of mounting bosses. The support bracket assembly further includes support brackets, a first adjustable link secured to one of the mounting bosses on the mounting assembly and a mounting boss on a support bracket, a second adjustable link secured to another one of the mounting bosses on the mounting assembly and a mounting bosses on a support bracket, and a third adjustable link secured to mounting bosses on two support bracket, where the first, second and third adjustable links form a triangular configuration.
    Type: Grant
    Filed: October 11, 2022
    Date of Patent: April 16, 2024
    Assignee: S&C Electric Company
    Inventors: Thomas J Dyer, Nicholas Seng, Joseph W. Milton, David G. Porter
  • Publication number: 20240118318
    Abstract: A system and method for determining an open or closed position of a magnetically actuated vacuum interrupter. The method includes applying a voltage signal of a known voltage to the actuator over a predetermined period and determining a change in current over time during the period when the voltage signal is applied to the actuator using an output of a Rogowski coil. The method also includes calculating the inductance using the voltage and the change in current over time at a predetermined time during the period and using the calculated inductance to determine whether the actuator and thus the vacuum interrupter are in the open or closed position.
    Type: Application
    Filed: October 9, 2023
    Publication date: April 11, 2024
    Applicant: S&C Electric Company
    Inventors: David G. Porter, Thomas J. Dyer, Joseph W. Milton, Andrew B. Berman, Christine E. McNeil
  • Patent number: 6011545
    Abstract: A graphic input system incorporates a digitizing tablet as an input surface. The digitizing tablet is comprised of two or more separate panels which are positioned adjacent to one another and may also comprise a mechanism for connecting the panels together, such as a hinge. The digitizing tablet, even though it is comprised of separate panels, operates as if the separate panels form a single coordinate system.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: January 4, 2000
    Assignee: Numoncis, Inc.
    Inventors: Phillip L. Henderson, David J. Porter
  • Patent number: 5737740
    Abstract: A system is disclosed for the processing of electronic documents wherein the hardcopy of an original document is placed on an x-y digitizer. The original document is then written upon with a digitizer pen that marks the original document while at the same time converting the handwritten marking into digital form. The digitized edit is stored as an electronic document that can be printed for general distribution, displayed, edited or the like. The system is useful in such applications as group meetings or presentations, where information is gathered and handwritten on a paper pad or flip chart supported by an easel.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: April 7, 1998
    Assignee: Numonics
    Inventors: Phillip L. Henderson, David J. Porter
  • Patent number: 5684692
    Abstract: A two-dimensional digitizing system comprises a plurality of overlaid digitizer tablets. Each tablet includes two wire grid circuits oriented at right angles to each other for the X and Y directions, with each circuit having conductive grid structures. In those circumstances where two panels generate position signals, a controller verifies which of the competing position signals is correct. The digitizer is also characterized by a capability to operate at large stylus-tablet separations, allowing for a multi-layered laminate tablet of substantial thickness. The present system is readily adapted for applications such as a cloth cutting in which large surface areas are required and in which the digitizer tablet circuitry must be located remote from a cutting surface.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: November 4, 1997
    Assignee: Gerber Garment Technology, Inc.
    Inventors: Kevin M. Williams, Claude LeBlond, Phillip L. Henderson, David J. Porter, Joseph Rovito