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    PITCH DATA PROCESSING SYSTEM FOR HORIZONTAL DIRECTIONAL DRILLING
    1.
    发明公开
    PITCH DATA PROCESSING SYSTEM FOR HORIZONTAL DIRECTIONAL DRILLING 审中-公开

    公开(公告)号：US20240344400A1

    公开(公告)日：2024-10-17

    申请号：US18631777

    申请日：2024-04-10

    申请人： Underground Magnetics, Inc.

    发明人： Yuriy Khapochkin

    IPC分类号： E21B7/04 ,  E21B43/30 ,  E21B47/02 ,  E21B47/024

    CPC分类号： E21B7/046 ,  E21B43/305 ,  E21B47/02 ,  E21B47/024

    摘要： A pitch data processing system of a horizontal directional drilling system can include a sonde, an offset and range calibration unit, a pitch speed limiter, and a low pass filter. The sonde can include an accelerometer configured to measure and output a raw pitch signal. The offset and range calibration unit can receive and process the raw pitch signal and output a calibrated pitch signal. The pitch speed limiter can receive the calibrated pitch signal. The pitch speed limiter is configured to set upper and lower pitch change speed limits. The pitch speed limiter can yield a speed-change limited pitch signal. The low pass filter can receive the speed-change limited pitch signal and attenuate the received speed-change limited pitch signal above a selected cutoff frequency of the low pass filter, the low pass filter configured to output an adjusted pitch signal.

    Wide frequency range underground transmitter
    6.
    发明授权
    Wide frequency range underground transmitter 有权

    公开(公告)号：US11802477B2

    公开(公告)日：2023-10-31

    申请号：US17483139

    申请日：2021-09-23

    申请人： Underground Magnetics, Inc.

    发明人： Yuriy Khapochkin ,  Dmitry Fedorov

    IPC分类号： E21B47/13 ,  E21B7/04 ,  H01Q5/25

    CPC分类号： E21B47/13 ,  E21B7/046 ,  H01Q5/25

    摘要： An underground transmitter can be configured for use with a drill head and configured for wireless communication. The underground transmitter can include a control circuitry and a multi-coil antenna assembly. The control circuitry is configured for transmitting data associated with an operation of the drill head. The multi-core antenna can include an antenna core and a plurality of distinct wire coils. The plurality of distinct wire coils can be positioned proximate (e.g., around) the antenna core, with the distinct wire coils each having a different inductance associated therewith and thereby capable of transmitting in a separate frequency range. The control circuitry can be selectably coupled with the distinct wire coils to control which of the distinct wire coils are activated and thereby generating data signals at a given time.

    Insulated-Gate Bipolar Transistor (IGBT) Rectifier for Charging Ultra-Capacitors
    8.
    发明申请
    Insulated-Gate Bipolar Transistor (IGBT) Rectifier for Charging Ultra-Capacitors 有权

    公开(公告)号：US20230121050A1

    公开(公告)日：2023-04-20

    申请号：US17918806

    申请日：2021-11-01

    申请人： Velocity Magnetics, Inc.

    发明人： Domenic P. Marzano ,  Alex R. Rugh ,  Joseph L. Hake

    IPC分类号： H02M7/06 ,  H02M1/00

    摘要： Provided is a system for an insulated-gate bipolar transistor (IGBT) rectifier for charging ultra-capacitors. The system may include a power converter, which may receive power from a power source. A direct current (DC) bus may be connected to the power converter and may receive power from the power converter. At least one IGBT may be connected to the DC bus and may receive power from the DC bus. An array of ultra-capacitors may be connected to the at least one IGBT. At least one controller may control the at least one IGBT to charge the array of ultra-capacitors. A method and computer program product are also disclosed.

    ANISOTROPIC IRON NITRIDE PERMANENT MAGNETS
    9.
    发明申请
    ANISOTROPIC IRON NITRIDE PERMANENT MAGNETS 有权

    公开(公告)号：US20210265086A1

    公开(公告)日：2021-08-26

    申请号：US17182066

    申请日：2021-02-22

    申请人： NIRON MAGNETICS, INC.

    发明人： Francis JOHNSON ,  Richard W. GREGER ,  John M. LARSON ,  Yiming WU ,  Fan ZHANG ,  Kathryn Sara DAMIEN

    IPC分类号： H01F1/047

    摘要： Disclosed herein is a permanent magnet comprising: a plurality of aligned iron nitride nanoparticles wherein the iron nitride nanoparticles include α″-Fe16N2 phase domains; wherein a ratio of integrated intensities of an α″-Fe16N2 (004) x-ray diffraction peak to an α″-α″-Fe16N2 (202) x-ray diffraction peak for the aligned iron nitride nanoparticles is greater than at least 7%, wherein the diffraction vector is parallel to alignment direction, and wherein the iron nitride nanoparticles exhibit a squareness measured parallel to the alignment direction that is greater than a squareness measured perpendicular to the alignment direction.

    Method of resistance training utilizing eddy current resistance
    10.
    发明授权
    Method of resistance training utilizing eddy current resistance 有权

    公开(公告)号：US10994169B2

    公开(公告)日：2021-05-04

    申请号：US16517953

    申请日：2019-07-22

    申请人： Velocity Magnetics, Inc.

    发明人： Terry Joseph Marzano

    IPC分类号： A63B21/005

    摘要： A method of utilizing eddy currents to induce resistance that simulates and replaces physical weights in strength training exercise equipment includes a user moving at least one of a first member and a second member that supports magnets of alternating polarity, relative to each other bi-directionally. The bi-directional movement can be linear, radial, arcuate, or circular. The movement of the first member and a second member relative to each other induces in the first member eddy currents which resist the movement of the first member, the second member, or both bi-directionally.