Patents by Inventor David Lawrence Epperson

David Lawrence Epperson 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: 11125783
    Abstract: A Rogowski coil in a sensor unit has voltage induced by a conductor surrounded by the Rogowski coil. The voltage is integrated to represent current which is converted to digital data representing current in the conductor and sent wirelessly to a multimeter. The sensor unit may receive control signals from the multimeter and a remote control apparatus. A plurality of sensor units may be networked and controlled by the remote control apparatus.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: September 21, 2021
    Assignee: Fluke Corporation
    Inventors: Matthew Carl-Robert Bannister, David Lawrence Epperson, Clark N. Huber
  • Publication number: 20200081036
    Abstract: A Rogowski coil in a sensor unit has voltage induced by a conductor surrounded by the Rogowski coil. The voltage is integrated to represent current which is converted to digital data representing current in the conductor and sent wirelessly to a multimeter. The sensor unit may receive control signals from the multimeter and a remote control apparatus. A plurality of sensor units may be networked and controlled by the remote control apparatus.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 12, 2020
    Inventors: Matthew Carl-Robert Bannister, David Lawrence Epperson, Clark N. Huber
  • Patent number: 10473696
    Abstract: A Rogowski coil in a sensor unit has voltage induced by a conductor surrounded by the Rogowski coil. The voltage is integrated to represent current which is converted to digital data representing current in the conductor and sent wirelessly to a multimeter. The sensor unit may receive control signals from the multimeter and a remote control apparatus. A plurality of sensor units may be networked and controlled by the remote control apparatus.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: November 12, 2019
    Assignee: Fluke Corporation
    Inventors: Matthew Carl-Robert Bannister, David Lawrence Epperson, Clark N. Huber
  • Patent number: 10209271
    Abstract: In at least one embodiment, a handheld measurement system generates a measurement image derived from measurement data that is generated and/or received by the handheld measurement system. The handheld measurement system also generates a plurality of option images that each correspond to a particular selectable option. A display screen, which may be a touch screen, simultaneously displays the measurement image and the option images. The measurement device modifies the measurement image and/or the option images in response to received option image selections.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: February 19, 2019
    Assignee: Fluke Corporation
    Inventors: David Lawrence Epperson, Glen Howard Vetter, Joseph V. Ferrante
  • Patent number: 10095659
    Abstract: Embodiments of the present disclosure are generally directed to handheld systems, individual components, and methods of using such systems and components for measuring parameters, such as electrical, mechanical, and physical measurement parameters. In one embodiment of the present disclosure, a gateway device for a measurement system generally includes a first communication system for receiving at least one signal containing data according to a first protocol, wherein the at least one signal includes at least one measurement value from at least one handheld measurement device, a signal translator for translating the signal containing the data to another signal containing the data according to a second protocol different from the first protocol, and a data memory system for storing data on the gateway device.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 9, 2018
    Assignee: Fluke Corporation
    Inventors: Luis Alberto Katz, Henricus Koppelmans, Paul Herman Heydron, David Lawrence Epperson
  • Patent number: 9766270
    Abstract: An installation test system has a control device and one or more hand-held test devices. The control device and the one or more hand-held devices are in wireless communication via respective communication systems. The control device performs typical pre-power tests including insulation testing and ground testing. There is at least one hand-held device dedicated to testing for residual current in circuit breakers and another hand-held device dedicated to testing for loop impedance. The control device records all test data and stores data in storage.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: September 19, 2017
    Assignee: Fluke Corporation
    Inventors: Paul Herman Heydron, Jeetendra Patel, David Lawrence Epperson
  • Patent number: 9739801
    Abstract: An analytical gateway device receives measurement data comprising one or more measurement values from one or more measurement devices. The gateway device selects a measurement application from a plurality of measurement applications available for execution (e.g., on the gateway device or some other computing device) based at least in part on the measurement data. For example, the measurement application can be selected based on measurement type information. The measurement type information may include one or more measurement units associated with the measurement values. The gateway device may cause a user interface (or some other information) associated with the measurement application to be presented on a display (e.g., a display of the gateway device or some other computing device in communication with the gateway device).
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: August 22, 2017
    Assignee: Fluke Corporation
    Inventors: Thomas Duffy Anderson, David Lawrence Epperson
  • Publication number: 20170199230
    Abstract: A Rogowski coil in a sensor unit has voltage induced by a conductor surrounded by the Rogowski coil. The voltage is integrated to represent current which is converted to digital data representing current in the conductor and sent wirelessly to a multimeter. The sensor unit may receive control signals from the multimeter and a remote control apparatus. A plurality of sensor units may be networked and controlled by the remote control apparatus.
    Type: Application
    Filed: March 27, 2017
    Publication date: July 13, 2017
    Inventors: Matthew Carl-Robert Bannister, David Lawrence Epperson, Clark N. Huber
  • Patent number: 9606146
    Abstract: A Rogowski coil in a sensor unit has voltage induced by a conductor surrounded by the Rogowski coil. The voltage is integrated to represent current which is converted to digital data representing current in the conductor and sent wirelessly to a multimeter. The sensor unit may receive control signals from the multimeter. A plurality of sensor units may be networked and controlled by a remote control apparatus.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 28, 2017
    Assignee: Fluke Corporation
    Inventors: Matthew Carl-Robert Bannister, David Lawrence Epperson, Clark N. Huber
  • Patent number: 9551597
    Abstract: In at least one embodiment, a mobile measurement system includes a handheld device, a measurement device, and an optical sensing device. The measurement device and the optical sensing device are communicatively coupled to the handheld device. The handheld device receives measurement data that comprises at least one measured electrical parameter corresponding to a physical property of an external system. The measurement device generates measurement data that corresponds to a period of time. The measurement device communicates the generated measurement data to the handheld device. The optical sensing device generates optical data corresponding to an interface of the measurement device and the external system where the measurement data is being generated. The generated optical data corresponds to a particular time within the measurement period of time. The mobile measurement system associates and stores the generated optical data for the particular time with measurement data corresponding to the period of time.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 24, 2017
    Assignee: Fluke Corporation
    Inventors: David Lawrence Epperson, Glen Howard Vetter
  • Publication number: 20160305978
    Abstract: In at least one embodiment, a handheld measurement system generates a measurement image derived from measurement data that is generated and/or received by the handheld measurement system. The handheld measurement system also generates a plurality of option images that each correspond to a particular selectable option. A display screen, which may be a touch screen, simultaneously displays the measurement image and the option images. The measurement device modifies the measurement image and/or the option images in response to received option image selections.
    Type: Application
    Filed: June 27, 2016
    Publication date: October 20, 2016
    Inventors: David Lawrence Epperson, Glen Howard Vetter, Joseph V. Ferrante
  • Patent number: 9377485
    Abstract: In at least one embodiment, a handheld measurement system for receiving measurement data. The handheld measurement system generates a measurement image derived from the received measurement data. The handheld measurement system also generates a plurality of option images that each correspond to a particular option. A touch screen is coupled to the measurement device, and the touch screen displays the measurement image and the option images. The displayed option images are selectable, and the measurement device is configured to modify the measurement image in response to a selection.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 28, 2016
    Assignee: Fluke Corporation
    Inventors: David Lawrence Epperson, Glen Howard Vetter, Joseph V. Ferrante
  • Publication number: 20160091535
    Abstract: A Rogowski coil in a sensor unit has voltage induced by a conductor surrounded by the Rogowski coil. The voltage is integrated to represent current which is converted to digital data representing current in the conductor and sent wirelessly to a multimeter. The sensor unit may receive control signals from the multimeter. A plurality of sensor units may be networked and controlled by a remote control apparatus.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 31, 2016
    Inventors: Matthew Carl-Robert Bannister, David Lawrence Epperson, Clark N. Huber
  • Publication number: 20150185251
    Abstract: An installation test system has a control device and one or more hand-held test devices. The control device and the one or more hand-held devices are in wireless communication via respective communication systems. The control device performs typical pre-power tests including insulation testing and ground testing. There is at least one hand-held device dedicated to testing for residual current in circuit breakers and another hand-held device dedicated to testing for loop impedance. The control device records all test data and stores data in storage.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 2, 2015
    Applicant: Fluke Corporation
    Inventors: Paul Herman Heydron, Jeetendra Patel, David Lawrence Epperson
  • Publication number: 20150022181
    Abstract: An analytical gateway device receives measurement data comprising one or more measurement values from one or more measurement devices. The gateway device selects a measurement application from a plurality of measurement applications available for execution (e.g., on the gateway device or some other computing device) based at least in part on the measurement data. For example, the measurement application can be selected based on measurement type information. The measurement type information may include one or more measurement units associated with the measurement values. The gateway device may cause a user interface (or some other information) associated with the measurement application to be presented on a display (e.g., a display of the gateway device or some other computing device in communication with the gateway device).
    Type: Application
    Filed: July 16, 2013
    Publication date: January 22, 2015
    Inventors: Thomas Duffy Anderson, David Lawrence Epperson
  • Publication number: 20140282241
    Abstract: In at least one embodiment, a handheld measurement system for receiving measurement data. The handheld measurement system generates a measurement image derived from the received measurement data. The handheld measurement system also generates a plurality of option images that each correspond to a particular option. A touch screen is coupled to the measurement device, and the touch screen displays the measurement image and the option images. The displayed option images are selectable, and the measurement device is configured to modify the measurement image in response to a selection.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: David Lawrence Epperson, Glen Howard Vetter, Joseph V. Ferrante
  • Publication number: 20140267753
    Abstract: In at least one embodiment, a mobile measurement system includes a handheld device, a measurement device, and an optical sensing device. The measurement device and the optical sensing device are communicatively coupled to the handheld device. The handheld device receives measurement data that comprises at least one measured electrical parameter corresponding to a physical property of an external system. The measurement device generates measurement data that corresponds to a period of time. The measurement device communicates the generated measurement data to the handheld device. The optical sensing device generates optical data corresponding to an interface of the measurement device and the external system where the measurement data is being generated. The generated optical data corresponds to a particular time within the measurement period of time. The mobile measurement system associates and stores the generated optical data for the particular time with measurement data corresponding to the period of time.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: FLUKE CORPORATION
    Inventors: David Lawrence Epperson, Glen Howard Vetter
  • Publication number: 20140035607
    Abstract: Embodiments of the present disclosure are generally directed to handheld systems, individual components, and methods of using such systems and components for measuring parameters, such as electrical, mechanical, and physical measurement parameters. In one embodiment of the present disclosure, a host handheld device generally includes a measuring system for measuring a first parameter, wherein the first parameter is an electrical parameter, and a receiving system for receiving at least a second parameter from a separate module device.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 6, 2014
    Inventors: Paul Herman Heydron, Henricus Koppelmans, David Lawrence Epperson, Luis Alberto Katz, Jeffrey Charles Hudson, Glen Howard Vetter
  • Publication number: 20140039838
    Abstract: Embodiments of the present disclosure are generally directed to handheld systems, individual components, and methods of using such systems and components for measuring parameters, such as electrical, mechanical, and physical measurement parameters. In one embodiment of the present disclosure, a gateway device for a measurement system generally includes a first communication system for receiving at least one signal containing data according to a first protocol, wherein the at least one signal includes at least one measurement value from at least one handheld measurement device, a signal translator for translating the signal containing the data to another signal containing the data according to a second protocol different from the first protocol, and a data memory system for storing data on the gateway device.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 6, 2014
    Inventors: Luis Alberto Katz, Henricus Koppelmans, Paul Herman Heydron, David Lawrence Epperson