Patents by Inventor Steven R. Montgomery

Steven R. Montgomery 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: 7847562
    Abstract: A resistive fault condition detector for conducting one or more tests of a circuit to detect a resistive fault condition. The detector includes means for determining changes in current through a load during the test, and means for measuring changes in first and second voltages respectively between the circuit's live and neutral conductors and between the circuit's neutral and ground conductors during the test, the changes in the first and second voltages corresponding to the changes in the current respectively. The detector also includes means for calculating apparent source impedances for the live and neutral conductors respectively, based on the changes in current and the measured changes in the first and second voltages respectively, and means for calculating an estimated source impedance for each of the live and neutral conductors for the test.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: December 7, 2010
    Assignee: 2D2C, Inc.
    Inventors: Steven R. Montgomery, Nicolas Jones
  • Publication number: 20080122447
    Abstract: A resistive fault condition detector for conducting one or more tests of a circuit to detect a resistive fault condition. The detector includes means for determining changes in current through a load during the test, and means for measuring changes in first and second voltages respectively between the circuit's live and neutral conductors and between the circuit's neutral and ground conductors during the test, the changes in the first and second voltages corresponding to the changes in the current respectively. The detector also includes means for calculating apparent source impedances for the live and neutral conductors respectively, based on the changes in current and the measured changes in the first and second voltages respectively, and means for calculating an estimated source impedance for each of the live and neutral conductors for the test.
    Type: Application
    Filed: May 31, 2007
    Publication date: May 29, 2008
    Inventors: Steven R. Montgomery, Nicolas Jones
  • Patent number: 6526362
    Abstract: A portable test meter is disclosed for measuring, calculating, recording and monitoring significant system parameters for a local communication network of the type used in industrial automation applications. The meter is disclosed in the context of a network employing the DeviceNet protocol. For each network parameter of interest, a rotary switch selects a desired one for display. An auto search mode selectable by the operator, increments through selected network parameters and compares measured or calculated values against stored data representing acceptable, marginal, or unacceptable conditions, and an associated visual indicia is displayed for each unacceptable or margin condition detected.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: February 25, 2003
    Assignee: Woodhead Industries, Inc.
    Inventors: Nicolas D. L. Jones, Steven R. Montgomery, Robert Graham
  • Publication number: 20020059040
    Abstract: A portable test meter is disclosed for measuring, calculating, recording and monitoring significant system parameters for a local communication network of the type used in industrial automation applications. The meter is disclosed in the context of a network employing the DeviceNet protocol. For each network parameter of interest, a rotary switch selects a desired one for display. An auto search mode selectable by the operator, increments through selected network parameters and compares measured or calculated values against stored data representing acceptable, marginal, or unacceptable conditions, and an associated visual indicia is displayed for each unacceptable or margin condition detected.
    Type: Application
    Filed: November 9, 2001
    Publication date: May 16, 2002
    Applicant: Woodhead Industries, Inc.
    Inventors: Nicolas D. L. Jones, Steven R. Montgomery, Robert Graham