Patents Assigned to Fluke Corporation
  • Patent number: 11913829
    Abstract: Systems and methods directed toward acoustic analysis can include an acoustic sensor array comprising a plurality of acoustic sensor elements, an electromagnetic imaging tool, and a processor in communication with the acoustic sensor array and the electromagnetic imaging tool. The processor can be configured to analyze acoustic data to extract one or more acoustic parameters representative of acoustic signals at one or more locations in an acoustic scene and generate a display image that includes electromagnetic image data and acoustic image data. The display image can further include information indicative of the one or more acoustic parameters at one or more locations in the acoustic scene, such as including acoustic image data in the display image at locations in the scene at which the one or more acoustic parameters satisfies a predetermined condition.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: February 27, 2024
    Assignee: Fluke Corporation
    Inventors: Michael D. Stuart, Dileepa Prabhakar
  • Patent number: 11906368
    Abstract: A temperature measurement technology includes generating an input optical signal at a wavelength using an optical signal generator, splitting the input optical signal into a first beam and a second beam, optically transmitting the first beam through the first arm of an interferometer, transmitting the second beam through a second arm of the interferometer that introduces a phase shift in the second beam relative to the first beam, combining at least a portion of the transmitted first beam and the transmitted phase-shifted second beam to produce an output optical signal, measuring an optical signal intensity of the output optical signal, and correlating the measured optical signal intensity with a temperature to produce a measured temperature. Alternatively, the input optical signal may be transmitted through two or more interferometers.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: February 20, 2024
    Assignee: Fluke Corporation
    Inventors: Mohammad Amin Tadayon, Kevin R. Williamson
  • Patent number: 11905943
    Abstract: A multi-stage electric gas pump includes a driving mechanism and an eccentric shaft including a main body having a longitudinal axis, a first eccentric portion, and a second eccentric portion, wherein the first eccentric portion and the second eccentric portion are fixed on the main body. The eccentric shaft is driven by the driving mechanism to produce a first circular movement of the first eccentric portion around the longitudinal axis and a second circular movement of the second eccentric portion around the longitudinal axis, wherein the second circular movement is synchronized with the first circular movement. The multi-stage electric gas pump further includes a first cylinder, a second cylinder, and a third cylinder. The cylinders in three stages are driven by the eccentric shaft so as to achieve three-stage pressurization of gas.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: February 20, 2024
    Assignee: Fluke Corporation
    Inventors: Fudong Xu, Hui Wang, Shounan Luo
  • Patent number: 11870491
    Abstract: A system for testing an optical fiber includes an optical source apparatus and an optical image sensor apparatus. The optical source apparatus includes a fiber optic connector that connects to a first end of the fiber, and a light emitting device which emits light into the first end of the fiber. The optical image sensor apparatus includes a fiber optic connector that connects to a second end of the fiber, an image sensor that receives light output from the second end of the fiber and generates corresponding image data, a lens array in an optical path between the fiber optic connector and the image sensor, and a processor coupled to the image sensor. The processor, in operation, determines a set of two-dimensional positions based on the image data output from the image sensor, and determines a test result based on the set of two-dimensional positions.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: January 9, 2024
    Assignee: Fluke Corporation
    Inventor: J. David Schell
  • Patent number: 11843904
    Abstract: A computer-implemented method, system, and computer-readable medium for automatically generating a combined display of measurement data representing a combined measurement, such as a multiphase parameter, includes establishing, by a mobile computing device, communication connections with a plurality of measurement devices configured to generate measurement data. The mobile computing device receives the measurement data generated by the plurality of measurement devices, and in response to information indicative of the measurement data representing related parts of a combined measurement, the mobile computing device automatically groups the measurement data received from the measurement devices and automatically displays the grouped measurement data in a combined display that shares at least one axis of measurement.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: December 12, 2023
    Assignee: Fluke Corporation
    Inventors: John Neeley, Bradey Honsinger, Tyler Bennett Evans, Joseph V. Ferrante
  • Patent number: 11821925
    Abstract: Accessories are removably received by a non-contact electrical detector for measuring an electrical characteristic without galvanic contact between the accessory and a non-contact sensor in the non-contact electrical detector. In some embodiments, an accessory is positioned in a gap between first and second extensions of the non-contact electrical detector. In some embodiments, an accessory includes first and second recesses on opposite sides of the accessory. First and second clamp arms of a non-contact electrical detector are inserted within the first and second recesses to removably hold the accessory. An external conductive prong of the accessory is electrically coupled, or is selectively electrically coupleable, with an internal conductive prong of the accessory. The external conductive prong is configured to be inserted into a receptacle of an electrical outlet.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: November 21, 2023
    Assignee: Fluke Corporation
    Inventors: Brian D. Painting, Luis R. Silva, Ginger M. Woo, Ronald Steuer
  • Patent number: 11815410
    Abstract: A temperature sensor includes a main body having a peripheral surface that extends along an axis between ends of the main body. A plurality of support structures are arranged along the main body and project from the peripheral surface of the main body transversely to the axis. A sleeve has a cavity defined by one or more sidewalls extending between first and second ends. The main body of the temperature sensor is positioned within the cavity. A platinum member having a length that extends along the main body is supported by a set of support structures of the plurality of support structures. In some cases, a seal member extends between the one or more sidewalls at the first end of the sleeve and seals the main body and the platinum member within the cavity. Measurement terminals may extend from the platinum member to an exterior of the temperature sensor.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: November 14, 2023
    Assignee: Fluke Corporation
    Inventors: Timothy B. Brown, Rong Ding, Donald D. Leach, David W. Farley
  • Patent number: 11815404
    Abstract: A system for determining a signature frequency of a photonic device includes a reference cell that receives a first light beam of a plurality of light beams. Based on a predetermined characteristic of the reference cell, the reference cell produces a first identifiable output indicative of a reference frequency in response to light in the first light beam having a particular frequency. A photonic device receives a second light beam of the plurality of light beams, and produces a second identifiable output in response to light in the second light beam having a frequency at the signature frequency. A computing device uses electrical signals representative of the first and second identifiable outputs to determine the signature frequency of the photonic device. A light source may emit a light beam having a controlled change of frequency and an optical splitter splits the light beam to produce the plurality of light beams.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: November 14, 2023
    Assignee: Fluke Corporation
    Inventor: Mohammad Amin Tadayon
  • Patent number: 11815405
    Abstract: A photonic device has a substrate with one or more optical resonators having a first resonant frequency response relative to temperature and a different second resonant frequency response relative to temperature. A first waveguide optically couples a first light beam having a first frequency to a first optical resonator and a second waveguide optically couples a second light beam having a second frequency to a second optical resonator. An optical shifter may shift an optical characteristic of the second light beam. A detector converts output light from the photonic device into an electric signal having a characteristic indicative of a physical condition, such as temperature, of the photonic device. In some cases, output light from the one or more optical resonators is combined and a temperature of the photonic device is determined from a beat frequency in the combined light. One or more multimode optical resonators may be used.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: November 14, 2023
    Assignee: Fluke Corporation
    Inventors: Mohammad Amin Tadayon, Kevin R. Williamson
  • Patent number: 11768242
    Abstract: A test device for testing an electrical circuit includes input terminals connectable by test leads to different test points of the electrical circuit; at least first and second measurement circuits; switches; a processor; and a storage medium storing instructions that, when executed by the processor, cause the test device to perform a first test of the electrical circuit while one or more of the switches electrically couples at least first and second ones of the input terminals to the first measurement circuit, and perform a second test of the electrical circuit while one or more of the switches electrically couples at least third and fourth ones of the input terminals the second measurement circuit, where the first and second tests are performed without changing connections of the input terminals of the test device to the different test points of the electrical circuit.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: September 26, 2023
    Assignee: Fluke Corporation
    Inventor: Ulrich Boecherer
  • Patent number: 11762089
    Abstract: Acoustic imaging systems can include an acoustic sensing array, an electromagnetic imaging tool, a display, and an audio device. A processor can receive data from the acoustic sensor array and the electromagnetic imaging tool to generate a display image combining acoustic image data and electromagnetic image data. Systems can include an audio device that receives an audio output from the processor and outputs audio feedback signals to a user. The audio feedback signals can represent acoustic signals from an acoustic scene. Systems can provide a display image to a user including acoustic image data, and a user can select an acoustic signal for which to provide a corresponding audio output to an audio device. Audio outputs and display images can change dynamically in response to a change in pointing of the acoustic sensing array, such as by changing a stereo audio output.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: September 19, 2023
    Assignee: Fluke Corporation
    Inventors: Michael D. Stuart, Henk Koppelmans, Dileepa Prabhakar, Scott M. Tsukamaki, Darwin C. Witt
  • Patent number: 11735015
    Abstract: Systems, devices, and operating methods thereof provide for operation of a display based on detection of defined electrical conditions. Measurement devices may include a housing sized and shaped to be held in a hand, a set of sensor devices for sensing a set of electrical characteristics, processing circuitry, and a display supported by the housing. The measurement devices receive measurements obtained from the sensor devices and determine whether the measurements satisfy criteria for detecting defined electrical conditions in an element under test. Operating modes of the display having different corresponding illumination characteristics are controlled as a result of determining the presence of defined electrical conditions in the element under test.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: August 22, 2023
    Assignee: Fluke Corporation
    Inventors: Luis R. Silva, Brian Douglas Painting
  • Patent number: D993054
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: July 25, 2023
    Assignee: Fluke Corporation
    Inventors: Ginger M. Woo, Christopher D. Corrigan, Brian S. Aikins, Jeffrey E. Worones
  • Patent number: D995447
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: August 15, 2023
    Assignee: Fluke Corporation
    Inventors: Ferdinand Y. Laurino, Carley Nicole McCutchen, Hilton G. Hammond
  • Patent number: D1000453
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: October 3, 2023
    Assignee: Fluke Corporation
    Inventors: Wayne S. Hoofnagle, J. David Schell, Jamie M. Martin
  • Patent number: D1006655
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: December 5, 2023
    Assignee: FLUKE CORPORATION
    Inventor: Wei Huang
  • Patent number: D1006660
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: December 5, 2023
    Assignee: Fluke Corporation
    Inventors: Ginger M. Woo, Scott M. Tsukamaki, David J. Gibson, Sr., Roger L. Howell
  • Patent number: D1006813
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: December 5, 2023
    Assignee: Fluke Corporation
    Inventors: Wayne S. Hoofnagle, Roger L Howell, J. David Schell, Harvey R. Trager
  • Patent number: D1016641
    Type: Grant
    Filed: April 6, 2022
    Date of Patent: March 5, 2024
    Assignee: FLUKE CORPORATION
    Inventor: Wei Liu
  • Patent number: D1016642
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: March 5, 2024
    Assignee: FLUKE CORPORATION
    Inventor: Wei Liu