Patents by Inventor Alexei Filatov

Alexei Filatov 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: 11686319
    Abstract: A blower can be positioned in a wellbore. The blower rotatably drives or is driven by a fluid produced through the well bore. An electric machine can be positioned downhole of the blower, the electric machine configured to rotatably drive or be driven by the blower. A bearing shaft couples the blower and the electric machine. The bearing shaft transfers rotation between the blower and the electric machine. A passive magnetic radial bearing assembly magnetically supports the bearing shaft.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: June 27, 2023
    Assignee: Upwing Energy, Inc.
    Inventors: Alexei Filatov, Larry Hawkins
  • Patent number: 11654274
    Abstract: A heart pump including a housing defining a cavity including at least one inlet aligned with an axis of the cavity and at least one outlet provided in a circumferential outer wall of the cavity. An impeller is provided within the cavity, the impeller including a rotor and vanes mounted on the rotor for urging fluid from the inlet radially outwardly to the outlet. A drive is provided for rotating the impeller in the cavity, the drive including a plurality of circumferentially spaced permanent drive magnets mounted within and proximate a first face of the rotor, adjacent drive magnets having opposing polarities and a plurality of circumferentially spaced drive coils mounted within the housing proximate a first end of the cavity, each coil being wound on a respective drive stator pole of a drive stator and being substantially radially aligned with the drive magnets, the drive coils being configured to generate a drive magnetic field that cooperates with the drive magnets to thereby rotate the impeller.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: May 23, 2023
    Assignee: BiVACOR Inc.
    Inventors: Daniel Timms, Matthias Kleinheyer, Nicholas Greatrex, Alexei Filatov
  • Patent number: 11572920
    Abstract: This disclosure describes a system for sending control signals and receiving sensor signals over cables at long distances. Electric currents and signals traveling down long cables can undergo phenomenon that are not present in relatively short cables. Therefore, this disclosure contemplates solutions for overcoming or compensating for these phenomenon to enable control of an electric machine using long cables. The solutions can include a signal conditioning circuit, configured to output a DC current corresponding to the sensed voltage associated with the sensor, a first conductor, that transmits the DC current from the signal conditioning circuit to the controller, and a signal generator, configured to receive the command signals and generate pulse width modulated (PWM) actuating signals based on the command signals.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: February 7, 2023
    Assignee: Calnetix Technologies, LLC
    Inventors: Rasish Khatri, Alexei Filatov, Larry Hawkins
  • Publication number: 20220389959
    Abstract: This disclosure describes a system for sending control signals and receiving sensor signals over cables at long distances. Electric currents and signals traveling down long cables can undergo phenomenon that are not present in relatively short cables. Therefore, this disclosure contemplates solutions for overcoming or compensating for these phenomenon to enable control of an electric machine using long cables. The solutions can include a signal conditioning circuit, configured to output a DC current corresponding to the sensed voltage associated with the sensor, a first conductor, that transmits the DC current from the signal conditioning circuit to the controller, and a signal generator, configured to receive the command signals and generate pulse width modulated (PWM) actuating signals based on the command signals.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 8, 2022
    Inventors: Rasish Khatri, Alexei Filatov, Larry Hawkins
  • Publication number: 20200171224
    Abstract: A heart pump including a housing defining a cavity including at least one inlet aligned with an axis of the cavity and at least one outlet provided in a circumferential outer wall of the cavity. An impeller is provided within the cavity, the impeller including a rotor and vanes mounted on the rotor for urging fluid from the inlet radially outwardly to the outlet. A drive is provided for rotating the impeller in the cavity, the drive including a plurality of circumferentially spaced permanent drive magnets mounted within and proximate a first face of the rotor, adjacent drive magnets having opposing polarities and a plurality of circumferentially spaced drive coils mounted within the housing proximate a first end of the cavity, each coil being wound on a respective drive stator pole of a drive stator and being substantially radially aligned with the drive magnets, the drive coils being configured to generate a drive magnetic field that cooperates with the drive magnets to thereby rotate the impeller.
    Type: Application
    Filed: October 3, 2019
    Publication date: June 4, 2020
    Inventors: Daniel Timms, Matthias Kleinheyer, Nicholas Greatrex, Alexei Filatov
  • Publication number: 20200072030
    Abstract: This disclosure describes various implementations of a downhole-blower system that can be used to boost production in a wellbore. The downhole-blower system includes a blower and an electric machine coupled to the blower that can be deployed in a wellbore, and that can, in cooperation, increase production through the wellbore.
    Type: Application
    Filed: November 4, 2019
    Publication date: March 5, 2020
    Applicant: Upwing Energy, LLC
    Inventors: Alexei Filatov, Larry Hawkins
  • Patent number: 10508932
    Abstract: Noncontact measurements of positions of electrically-conductive objects is achieved by placing two conductive coils formed by traces on printed circuit boards (PCBs) in the proximity of the object surface, energizing one of the coils (excitation coil) with alternating electrical current and measuring the amplitude of the voltage induced on the terminals of the second coil (sensing coil). The alternating magnetic field generated by the current in the excitation coil induces eddy currents in the object, which affect the amplitude of the voltage induced on the terminals of the sensing coil. The sensing coil voltage depends on the mutual position between the object and the sensing coil, allowing the object position measurement. The excitation coil is integrated into a series LCR circuit driven by an output of an adjustable gain amplifier at the resonance frequency. The adjustable amplifier gain is constantly adjusted to maintain the sensor sensitivity constant.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: December 17, 2019
    Assignee: Calnetix Technologies, LLC
    Inventor: Alexei Filatov
  • Patent number: 10465489
    Abstract: This disclosure describes various implementations of a downhole-blower system that can be used to boost production in a wellbore. The downhole-blower system includes a blower and an electric machine coupled to the blower that can be deployed in a wellbore, and that can, in cooperation, increase production through the wellbore.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: November 5, 2019
    Assignee: Upwing Energy, LLC
    Inventors: Alexei Filatov, Larry Hawkins
  • Publication number: 20180292235
    Abstract: Noncontact measurements of positions of electrically-conductive objects is achieved by placing two conductive coils formed by traces on printed circuit boards (PCBs) in the proximity of the object surface, energizing one of the coils (excitation coil) with alternating electrical current and measuring the amplitude of the voltage induced on the terminals of the second coil (sensing coil). The alternating magnetic field generated by the current in the excitation coil induces eddy currents in the object, which affect the amplitude of the voltage induced on the terminals of the sensing coil. The sensing coil voltage depends on the mutual position between the object and the sensing coil, allowing the object position measurement. The excitation coil is integrated into a series LCR circuit driven by an output of an adjustable gain amplifier at the resonance frequency. The adjustable amplifier gain is constantly adjusted to maintain the sensor sensitivity constant.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 11, 2018
    Inventor: Alexei Filatov
  • Publication number: 20180179872
    Abstract: This disclosure describes various implementations of a downhole-blower system that can be used to boost production in a wellbore. The downhole-blower system includes a blower and an electric machine coupled to the blower that can be deployed in a wellbore, and that can, in cooperation, increase production through the wellbore.
    Type: Application
    Filed: December 28, 2016
    Publication date: June 28, 2018
    Applicant: Upwing Energy, LLC
    Inventors: Alexei Filatov, Larry Hawkins
  • Patent number: 9683601
    Abstract: An electromagnetic actuator can exert a radial electromagnetic force on a body that is configured to rotate about a rotational axis. The actuator includes a radial control magnetic pole assembly that includes radial control poles adjacent to and spaced apart by air gaps from the body. The actuator includes a permanent magnet (PM) magnetized along the axis, having one pole in contact with an axial face of the assembly and located proximate to a lateral surface of the body. The PM is magnetically coupled to the body in a non-contact manner resulting in a bias magnetic flux in the air gaps. The actuator includes a control coil around the radial control poles located radially outwards from the PM. Electrical current in the coils generates control magnetic flux in air gaps. The non-uniform net magnetic flux distribution around the body results in a radial electromagnetic force exerted on the body.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 20, 2017
    Assignee: Calnetix Technologies, LLC
    Inventor: Alexei Filatov
  • Patent number: 9559565
    Abstract: Radial poles are placed around a radial actuator target mounted on a body. The poles are separated from a cylindrical surface of the target by radial gaps and adapted to communicate a magnetic flux with it. The radial poles are equipped with electrical control windings and magnetically coupled to form magnetic control circuits. A flux return pole is adjacent to the body, separated from it by an air gap and adapted to communicate a magnetic flux with the radial actuator target. A permanent magnet generates a magnetic bias flux in the magnetic bias circuit formed by the radial actuator target, the radial poles and the magnetic flux return pole. A radial force is exerted on the actuator when the control windings are energized with a current. A Hall effect sensor measures bias magnetic field in the air gap between the magnetic flux return pole and the body.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: January 31, 2017
    Assignee: Calnetix Technologies, LLC
    Inventors: Alexei Filatov, Josh Bowman
  • Patent number: 9531236
    Abstract: Systems, methods, and devices for generating electromagnetic forces may involve generating an axial control magnetic flux in an axial control magnetic circuit comprising a first axial pole, a second axial pole, and an axial actuator target, the axial actuator target coupled to a body having a rotational axis. A radial control flux can be generated in a radial control magnetic circuit comprising a first radial pole, a second radial pole, and a radial actuator target. An electrical compensation current can be applied to an electrical bias flux leveling coil to cancel or nearly cancel any changes of the magnetic flux leaking from either the first or the second axial poles into the radial poles, electrical bias flux leveling coil wound around the rotational axis and located axially between the radial poles and the closest of the first or the second axial poles.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: December 27, 2016
    Assignee: Calnetix Technologies, LLC
    Inventor: Alexei Filatov
  • Patent number: 9024494
    Abstract: The present disclosure describes a mechanical backup bearing system arrangement to work in conjunction with non-contact magnetic bearings and capable of coping with thermal expansions of the bearing components during operations. Expansions or contractions of an inner or outer race of a bearing can be compensated using particular springs providing a low profile and a proper stiffness. An electric machine system includes a rotational portion and a stationary portion. The electric machine further includes a magnetic bearing configured to support the rotational portion to rotate within the stationary portion. A mechanical back-up bearing resides in a cavity between the rotational portion and the stationary portion. A flat spring is carried by the stationary portion and abutting the back-up bearing.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: May 5, 2015
    Assignee: Calnetix Technologies, LLC
    Inventors: Lawrence A. Hawkins, Alexei Filatov
  • Publication number: 20150054389
    Abstract: Radial poles are placed around a radial actuator target mounted on a body. The poles are separated from a cylindrical surface of the target by radial gaps and adapted to communicate a magnetic flux with it. The radial poles are equipped with electrical control windings and magnetically coupled to form magnetic control circuits. A flux return pole is adjacent to the body, separated from it by an air gap and adapted to communicate a magnetic flux with the radial actuator target. A permanent magnet generates a magnetic bias flux in the magnetic bias circuit formed by the radial actuator target, the radial poles and the magnetic flux return pole. A radial force is exerted on the actuator when the control windings are energized with a current. A Hall effect sensor measures bias magnetic field in the air gap between the magnetic flux return pole and the body.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 26, 2015
    Inventors: Alexei Filatov, Josh Bowman
  • Publication number: 20140265689
    Abstract: An electromagnetic actuator can exert a radial electromagnetic force on a body that is configured to rotate about a rotational axis. The actuator includes a radial control magnetic pole assembly that includes radial control poles adjacent to and spaced apart by air gaps from the body. The actuator includes a permanent magnet (PM) magnetized along the axis, having one pole in contact with an axial face of the assembly and located proximate to a lateral surface of the body. The PM is magnetically coupled to the body in a non-contact manner resulting in a bias magnetic flux in the air gaps. The actuator includes a control coil around the radial control poles located radially outwards from the PM. Electrical current in the coils generates control magnetic flux in air gaps. The non-uniform net magnetic flux distribution around the body results in a radial electromagnetic force exerted on the body.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Calnetix Technologies, LLC
    Inventor: Alexei Filatov
  • Publication number: 20140191604
    Abstract: The present disclosure describes a mechanical backup bearing system arrangement to work in conjunction with non-contact magnetic bearings and capable of coping with thermal expansions of the bearing components during operations. Expansions or contractions of an inner or outer race of a bearing can be compensated using particular springs providing a low profile and a proper stiffness. An electric machine system includes a rotational portion and a stationary portion. The electric machine further includes a magnetic bearing configured to support the rotational portion to rotate within the stationary portion. A mechanical back-up bearing resides in a cavity between the rotational portion and the stationary portion. A flat spring is carried by the stationary portion and abutting the back-up bearing.
    Type: Application
    Filed: January 7, 2013
    Publication date: July 10, 2014
    Inventors: Lawrence A. Hawkins, Alexei Filatov
  • Publication number: 20120306305
    Abstract: Systems, methods, and devices for generating electromagnetic forces may involve generating an axial control magnetic flux in an axial control magnetic circuit comprising a first axial pole, a second axial pole, and an axial actuator target, the axial actuator target coupled to a body having a rotational axis. A radial control flux can be generated in a radial control magnetic circuit comprising a first radial pole, a second radial pole, and a radial actuator target. An electrical compensation current can be applied to an electrical bias flux leveling coil to cancel or nearly cancel any changes of the magnetic flux leaking from either the first or the second axial poles into the radial poles, electrical bias flux leveling coil wound around the rotational axis and located axially between the radial poles and the closest of the first or the second axial poles.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 6, 2012
    Inventor: Alexei Filatov