Patents by Inventor Keith E. Lindsey

Keith E. Lindsey 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).

  • Publication number: 20260100120
    Abstract: An enclosed spaces fire detection system is provided. An enclosed spaces fire detection system includes a housing configured to be mounted in an enclosed space, such as an attic, a garage, a kitchen, or a laundry room; and at least one infrared imaging camera supported by the housing and including a thermopile focal plane array (FPA) with an antireflective layer on a thermopile lens configured to pass infrared radiance in a first range corresponding to a fire in the enclosed space.
    Type: Application
    Filed: October 6, 2025
    Publication date: April 9, 2026
    Inventors: Jagdishbhai U. Patel, Keith E. Lindsey, John McCall
  • Publication number: 20250373762
    Abstract: Systems and methods for debris detection and integrity validation for right-of-way based infrastructures are provided. Further, systems and methods for detection of electrical arcs and systems and methods for fire detection are provided. Further, a device for detection of weather conditions that is mountable on a power line is provided.
    Type: Application
    Filed: August 11, 2025
    Publication date: December 4, 2025
    Inventors: Keith E. Lindsey, John McCall
  • Publication number: 20250347719
    Abstract: A current and voltage measuring bushing is disclosed. The current and voltage measuring bushing may have a current sensor and a resistive voltage divider commonly located in the bushing. In one or more embodiments, the current and voltage metering bushing may have current and voltage measuring accuracy of 0.3% or better.
    Type: Application
    Filed: May 7, 2025
    Publication date: November 13, 2025
    Inventors: Daniel H. Lee, Christopher J. Meeks, Robert May, Keith E. Lindsey, An-Chyun Wang, Keith M. Carpenter
  • Patent number: 12388958
    Abstract: Systems and methods for debris detection and integrity validation for right-of-way based infrastructures are provided. Further, systems and methods for detection of electrical arcs and systems and methods for fire detection are provided. Further, a device for detection of weather conditions that is mountable on a power line is provided.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: August 12, 2025
    Assignee: LINDSEY FIRESENSE, LLC
    Inventors: Keith E. Lindsey, John McCall
  • Patent number: 11901711
    Abstract: An electric transmission line support structure. A crossarm depending perpendicularly from a vertical shaft has a first and a second mounting point. A central support depends from the crossarm between the first and the second mounting point. A first conductor bundle is attached to the first mounting point by a first structural string and to the central support by a second structural string. A second conductor bundle is connected to the central support by a third structural string and to the second mounting point by a fourth structural string. A fifth structural string, perpendicular to the crossarm and extending between the first conductor bundle and the second conductor bundle, connects the central mounting point to a third conductor bundle that is further from the crossarm than the first conductor bundle and the second conductor bundle. A sixth structural string connects the vertical shaft to the third conductor bundle.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: February 13, 2024
    Assignee: Inventus Holdings, LLC
    Inventors: Phillip S. Givens, Chung Jerry Wong, Robert K. Dunn, Jerry W. Hutcheson, Jose R. F. Ribeiro, Keith E. Lindsey, Miguel A. Flores, Thomas R. Koegel, Erica Souza Nogueira Bretas
  • Patent number: 11799278
    Abstract: An electric transmission line support structure. A first vertical shaft and a parallel second vertical shaft are connected by a crossarm. A first conductor attachment point is connected to the first vertical shaft at a first vertical shaft attachment by a first structural string. A second conductor attachment point is connected to the second vertical shaft at a second vertical shaft attachment point by a second structural string and to the first conductor attachment point by a third structural string. A third conductor attachment point connected to the first vertical shaft at a third vertical shaft attachment point by a fourth structural string and to the second vertical shaft at a fourth vertical shaft attachment point by a fifth structural string. The third vertical shaft attachment point is below the first vertical shaft attachment point, and the fourth vertical shaft attachment point is below the second vertical shaft attachment point.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: October 24, 2023
    Assignee: Inventus Holdings, LLC
    Inventors: Phillip S. Givens, Chung Jerry Wong, Robert K. Dunn, Jerry W. Hutcheson, Jose R. F. Ribeiro, Keith E. Lindsey, Miguel A. Flores, Thomas R. Koegel, Erica Souza Nogueira Bretas
  • Patent number: 11680993
    Abstract: A current monitor for a transmission line having powered active components is provided. A current monitor includes: a housing configured to be coupled to a transmission line, an inductive current sensor in the housing configured to measure a value of the current on the transmission line to generate a sensor signal, a power source, and a sensor signal conversion circuit in the housing configured to receive power from the power source and to generate a current output signal based on the sensor signal, the current output signal having a natively useful form.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: June 20, 2023
    Assignee: LINDSEY MANUFACTURING CO.
    Inventors: Keith E. Lindsey, John McCall, An-Chyun Wang
  • Patent number: 11551835
    Abstract: A transmission line assembly and a compact insulator and hardware assembly for a transmission line assembly are provided. In an embodiment, a transmission line assembly includes a first V-string including a first post insulator and a second post insulator; a second V-string including a third post insulator and a fourth post insulator; and a suspension insulator, and a first yoke plate, a second yoke plate, and a third yoke plate are configured to respectively support a first phase conductor, a second phase conductor, and a third phase conductor to have an inverted triangular configuration.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: January 10, 2023
    Assignee: Lindsey Manufacturing Company
    Inventors: Keith E. Lindsey, Miguel A. Flores
  • Patent number: 11443155
    Abstract: An insulator leakage current detector, an insulator leakage current detecting system, and a method of monitoring insulator leakage current using the same are provided. An insulator leakage current detector mountable on an insulator string includes a sensor to sense leakage current information of the insulator string; and a device to send a signal including the leakage current information sensed by the sensor.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: September 13, 2022
    Assignee: Lindsey Manufacturing Company
    Inventors: Keith E. Lindsey, John McCall
  • Patent number: 11329404
    Abstract: A post insulator, a post insulator keeper, and a method of securing a conductor on a post insulator are provided. A post insulator includes: an electrically insulative case including an abutment surface defining a recess; and a keeper rotatably coupled to the case between an open position in which a conductor is receivable into the recess, and a closed position to maintain the conductor in the recess.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: May 10, 2022
    Assignee: LINDSEY MANUFACTURING CO.
    Inventors: Keith E. Lindsey, Paul Lara, Philip E. Spillane
  • Publication number: 20220044848
    Abstract: A transmission line assembly and a compact insulator and hardware assembly for a transmission line assembly are provided. In an embodiment, a transmission line assembly includes a first V-string including a first post insulator and a second post insulator; a second V-string including a third post insulator and a fourth post insulator; and a suspension insulator, and a first yoke plate, a second yoke plate, and a third yoke plate are configured to respectively support a first phase conductor, a second phase conductor, and a third phase conductor to have an inverted triangular configuration.
    Type: Application
    Filed: December 23, 2020
    Publication date: February 10, 2022
    Inventors: Keith E. Lindsey, Miguel A. Flores
  • Patent number: 11085975
    Abstract: A dropped conductor sensor includes a housing installable on a first conductor; a sensor supported in the housing and configured to sense in real time at least one of an acceleration, a vibration, a tilt, a roll, or an angular displacement of the dropped conductor sensor; and an antenna in the housing, the antenna configured to transmit a signal including information sensed by the sensor away from the dropped conductor sensor in real time. A monitoring system including a dropped conductor sensor, and a method of monitoring a conductor using a dropped conductor sensor are also provided.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 10, 2021
    Assignee: LINDSEY MANUFACTURING CO.
    Inventors: An-Chyun Wang, John McCall, Keith E. Lindsey
  • Publication number: 20210239769
    Abstract: A current monitor for a transmission line having powered active components is provided. A current monitor includes: a housing configured to be coupled to a transmission line, an inductive current sensor in the housing configured to measure a value of the current on the transmission line to generate a sensor signal, a power source, and a sensor signal conversion circuit in the housing configured to receive power from the power source and to generate a current output signal based on the sensor signal, the current output signal having a natively useful form.
    Type: Application
    Filed: April 19, 2021
    Publication date: August 5, 2021
    Inventors: Keith E. Lindsey, John McCall, An-Chyun Wang
  • Publication number: 20210183039
    Abstract: Systems and methods for debris detection and integrity validation for right-of-way based infrastructures using a neural network are provided. Further, systems and methods for detection of electrical arcs and systems and methods for fire detection using a neural network are provided.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 17, 2021
    Inventors: Keith E. Lindsey, John McCall, Thomas Lu
  • Publication number: 20210182569
    Abstract: Systems and methods for debris detection and integrity validation for right-of-way based infrastructures are provided. Further, systems and methods for detection of electrical arcs and systems and methods for fire detection are provided. Further, a device for detection of weather conditions that is mountable on a power line is provided.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 17, 2021
    Inventors: Keith E. Lindsey, John McCall
  • Patent number: 10983173
    Abstract: A current monitor for a transmission line having powered active components is provided. A current monitor includes: a housing configured to be coupled to a transmission line, an inductive current sensor in the housing configured to measure a value of the current on the transmission line to generate a sensor signal, a power source, and a sensor signal conversion circuit in the housing configured to receive power from the power source and to generate a current output signal based on the sensor signal, the current output signal having a natively useful form.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: April 20, 2021
    Assignee: LINDSEY MANUFACTURING CO.
    Inventors: Keith E. Lindsey, John McCall, An-Chyun Wang
  • Patent number: D993927
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: August 1, 2023
    Assignee: LINDSEY MANUFACTURING COMPANY
    Inventors: Keith E. Lindsey, Miguel A. Flores
  • Patent number: D994605
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: August 8, 2023
    Assignee: LINDSEY MANUFACTURING COMPANY
    Inventors: Keith E. Lindsey, Miguel A. Flores
  • Patent number: D1098945
    Type: Grant
    Filed: May 7, 2024
    Date of Patent: October 21, 2025
    Assignee: LINDSEY MANUFACTURING CO.
    Inventors: Daniel H. Lee, Christopher J. Meeks, Robert May, Keith E. Lindsey, An-Chyun Wang, Keith M. Carpenter
  • Patent number: D1105939
    Type: Grant
    Filed: October 19, 2023
    Date of Patent: December 16, 2025
    Assignee: LINDSEY MANUFACTURING CO.
    Inventors: An-Chyun Wang, Keith E. Lindsey