Patents by Inventor Michael Goldfarb

Michael Goldfarb 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: 20190040878
    Abstract: A control valve comprises a body. A diverter is disposed within the body. The diverter is movably positionable within the body such that the diverter can assume a first position, second position and third position. The body includes one or more exhaust ports, a supply port, a first outlet port and a second outlet port. The body and diverter are configured such that: when the diverter is in the first position, the supply port and first outlet port fluidly communicate and the one or snore exhaust ports and second outlet port are fluidly isolated; when the diverter is in the second position, the first outlet port and one of the one or more exhaust ports fluidly communicate and the supply port and second outlet port are fluidly isolated; and When the diverter is in the third position, the first outlet port and second outlet port fluidly communicate and the supply port and the one or more exhaust ports are fluidly isolated.
    Type: Application
    Filed: January 20, 2017
    Publication date: February 7, 2019
    Applicant: Nexmatic LLC
    Inventors: Ellen Mell, Dennis Mell, Michael Goldfarb
  • Publication number: 20190032686
    Abstract: An energy-saving charge/discharge method controls the repeated charging and discharging of a working vessel in a manner that enables the storage and subsequent reuse of compressed gas during the repeated charge and discharge cycle. In contrast to the methods of the prior art, the method does not discard the entire mass of compressed gas during each discharge phase of the cycle. An energy savings results from the recycling of compressed gas, which reduces the net consumption of compressed gas for a given charge/discharge cycle of a given pressure vessel. A minimum amount of apparatus is required to implement the recycling of compressed gas.
    Type: Application
    Filed: January 20, 2017
    Publication date: January 31, 2019
    Applicant: Nexmatix LLC
    Inventors: Ellen Mell, Dennis Mell, Michael Goldfarb
  • Patent number: 10172725
    Abstract: A jointed mechanical device is provided. The device includes at least one element having a fixed end and a deflectable end. The device also includes at least one actuating structure having a first end coupled to at least the deflectable end of the element, where the actuating structure includes at least one elastic element in series with at least one non-elastic element. The device further includes at least one force actuator configured to apply an actuator force to a second end of the actuating structure. Additionally, the device includes a control system for adjusting an operation of the force actuator based at least one actuation input, an amount of the actuator force, and an amount of displacement generated by the force actuator.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: January 8, 2019
    Assignee: Vanderbuilt University
    Inventors: Michael Goldfarb, Skyler Dalley, Huseyin Atakan Varol, Tuomas Wiste
  • Patent number: 10137010
    Abstract: Systems and methods for operating autonomous lower limb devices, including at least one adjustable joint and configured for at least supporting a body are provided. A method includes collecting real-time sensor information associated with the autonomous lower limb device. The method also includes receiving, over a communications link, remote data for at least one other lower limb device configured for supporting the body. The method further includes generating control data for transitioning the autonomous lower limb device from a current state in a current finite state model for operating the autonomous lower limb device to a different state in the current finite state model, where the different state is selected based on the real-time sensor information and the remote data.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: November 27, 2018
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Brian Lawson
  • Patent number: 10111762
    Abstract: A device includes a first member and a second member disposed in series along a longitudinal axis. The device also includes links coupling first joints of the first member to second joints of the second member. The first and second members and the links arranged to define a planar parallelogram linkage. The devices also include a resilient element disposed between the first member and the second member, the first member and the second member preloaded against the resilient element. The first member and the second member are preloaded to provide an arrangement of the first and the second joints in which a motion of the first joints with respect to the second joints is constrained to a direction substantially parallel to the longitudinal axis. The devices further include a sensor for generating a signal indicating a separation between the first member and the second member.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: October 30, 2018
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Jason Mitchell, Huseyin Atakan Varol, Brian Edward Lawson, Don Truex
  • Patent number: 10092423
    Abstract: A control method for an arm prosthesis having at least one powered joint and at least one inertial measurement sensor (IMS) includes determining a motion and an orientation of the arm prosthesis relative to the inertial reference frame based at least on an output of the IMS and generating control signals for the at least one powered joint based on the motion and the orientation of the prosthetic arm.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: October 9, 2018
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Nasser Alshammary, Daniel Bennett, Skyler Dalley
  • Patent number: 10016290
    Abstract: Described herein are systems and methods for a powered ankle/foot prosthesis and controller that utilizes piecewise emulated passive impedances to provide for walking at various cadences and on various slopes and for ground slope adaptive standing. A powered prosthesis using these systems and methods is capable of emulating any physical behavior provided by the healthy joint, and additionally describes a control system that utilizes the sensing and actuation system on the prosthesis to provide appropriate ankle joint impedances. Further, the control system incorporates a finite-state-based structure, and within each state, emulates the behavior of the healthy joint with strictly passive impedance functions.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: July 10, 2018
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Amanda Huff Shultz, Brian E. Lawson, Jason E. Mitchell, Don Truex
  • Patent number: 9964125
    Abstract: A double-solenoid directional control valve comprising a valve body and a valve spool within the valve body, where the valve spool is configured to move within the valve body between a first position, a second position and a third position, where the third spool position lies between the first and second spool positions. In certain embodiments, the spool is maintained in the first and third positions by energizing at least a first or a second solenoid actuator, and where the spool is maintained in the second position by de-energizing both solenoid actuators.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: May 8, 2018
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Don Truex
  • Publication number: 20180120193
    Abstract: This application describes apparatuses, systems, and methods that combines specific configurations of a pneumatic actuation system together with a pressure measurement device to allow for measurement of pressure inside isolated subsystems within the system to thereby provide detection of leaks within the system. In certain exemplary embodiments, the apparatus comprises a directional control valve that employs at least one port connectivity configuration that creates at least one isolated fluid subsystem within the overall system. When the valve is in this isolated subsystem configuration, a given mass of fluid (i.e., compressed gas) can neither enter nor leave the subsystem.
    Type: Application
    Filed: April 19, 2016
    Publication date: May 3, 2018
    Applicant: Nexmatix LLC
    Inventors: Dennis T. Mell, Ellen R. Mell, Michael Goldfarb
  • Publication number: 20180106386
    Abstract: A directional-control valve is typically comprised of a valve spool that slides linearly within a valve body. The valve body typically includes five internal ports, which are covered or exposed as the spool slides within the body. The typical five-internal-port architecture precludes certain combinations of port connectivity when the spool is in the center position. For example, when the spool is in the center position, providing connectivity between the actuator ports, while simultaneously providing fluid isolation of the supply and exhaust ports, is not directly achievable with a standard five-port architecture. This application describes three embodiments that enable the aforementioned port connectivity when the spool is in the center position.
    Type: Application
    Filed: October 26, 2017
    Publication date: April 19, 2018
    Inventors: Michael GOLDFARB, Jason MITCHELL
  • Publication number: 20170333222
    Abstract: Systems and methods for controlling a weight bearing member having at least one powered joint are provided. A system includes a velocity reference module for receiving myoelectric control signals from a user during a non-weight bearing mode for the powered joint and generating a velocity reference for the powered joint based on the myoelectric control signals. The system further includes a volitional impedance module for generating a torque control signal for actuating the powered joint based at least on the velocity reference.
    Type: Application
    Filed: May 8, 2017
    Publication date: November 23, 2017
    Inventors: Michael GOLDFARB, Huseyin Atakan VAROL, Kevin HA
  • Patent number: 9803758
    Abstract: A directional-control valve is typically comprised of a valve spool that slides linearly within a valve body. The valve body typically includes five internal ports, which are covered or exposed as the spool slides within the body. The typical five-internal-port architecture precludes certain combinations of port connectivity when the spool is in the center position. For example, when the spool is in the center position, providing connectivity between the actuator ports, while simultaneously providing fluid isolation of the supply and exhaust ports, is not directly achievable with a standard five-port architecture. This application describes three embodiments that enable the aforementioned port connectivity when the spool is in the center position.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: October 31, 2017
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Jason Mitchell
  • Publication number: 20170306990
    Abstract: An energy saving directional-control valves (2-position and 3-position) are configured with standard manual override functionality and with the same steady-state input-output behavior as each respective standard/non-energy saving directional-control valve. This allows a standard non-energy saving valve to be replaced with an energy saving valve without reconfiguring the external electrical and manual override command logic.
    Type: Application
    Filed: October 3, 2015
    Publication date: October 26, 2017
    Applicant: Nexmatix LLC
    Inventor: Michael Goldfarb
  • Publication number: 20170281453
    Abstract: A apparatus includes an a exoskeleton system with a plurality of sensors for generating signals indicating a current motion and a current arrangement of at least the exoskeleton system, a hip segment, and at least one lower limb. The lower limb includes thigh and shank segments for coupling to a lateral surface of a user's leg. The thigh segment includes a first powered joint coupling the thigh segment to the hip segment, a second powered joint coupling the thigh segment to the shank segment, and a controller coupled to the sensors, the first powered joint, and the second powered joint. The controller is configured for determining a current state of the exoskeleton system and a current intent of the user based on the signals and generating control signals for the first and second powered joints based on the current state and the current intent.
    Type: Application
    Filed: June 20, 2017
    Publication date: October 5, 2017
    Applicant: VANDERBILT UNIVERSITY
    Inventors: Michael GOLDFARB, Ryan J. FARRIS, Hugo A. QUINTERO
  • Patent number: 9750620
    Abstract: Systems and methods are provided for controlling a lower limb device having at least one powered joint. The method includes detecting a stumble event based on one or more sensor signals associated with an overall motion lower limb device, classifying the stumble event based on sensor signals following the sensor signals associated with the stumble event, and selecting a stumble recovery strategy for the lower limb device based on the classification of the stumble event.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: September 5, 2017
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Huseyin Atakan Varol, Brian Edward Lawson, Frank Charles Sup
  • Patent number: 9730815
    Abstract: A method for operating a grasping device and grasping devices therefrom are provided. The grasping device is configured to use a plurality of parallel, bi-directional state flow maps each defining a sequence of poses for a plurality of joints in the grasping device. The method include receiving at least one control signal, determining a current pose of the grasping device within the one of the plurality of state flow maps currently selected for the grasping device, and selectively actuating the plurality of joints to traverse the sequence of poses, where a direction for traversing the sequence of poses is based on the at least one control signal.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: August 15, 2017
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Skyler A. Dalley, Huseyin Atakan Varol
  • Patent number: 9693926
    Abstract: A apparatus includes an a exoskeleton system with a plurality of sensors for generating signals indicating a current motion and a current arrangement of at least the exoskeleton system, a hip segment, and at least one lower limb. The lower limb includes thigh and shank segments for coupling to a lateral surface of a user's leg. The thigh segment includes a first powered joint coupling the thigh segment to the hip segment, a second powered joint coupling the thigh segment to the shank segment, and a controller coupled to the sensors, the first powered joint, and the second powered joint. The controller is configured for determining a current state of the exoskeleton system and a current intent of the user based on the signals and generating control signals for the first and second powered joints based on the current state and the current intent.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: July 4, 2017
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Ryan J. Farris, Hugo A. Quintero
  • Patent number: 9682006
    Abstract: A apparatus includes an a exoskeleton system with a plurality of sensors for generating signals indicating a current motion and a current arrangement of at least the exoskeleton system, a hip segment, and at least one lower limb. The lower limb includes thigh and shank segments for coupling to a lateral surface of a user's leg. The thigh segment includes a first powered joint coupling the thigh segment to the hip segment, a second powered joint coupling the thigh segment to the shank segment, and a controller coupled to the sensors, the first powered joint, and the second powered joint. The controller is configured for determining a current state of the exoskeleton system and a current intent of the user based on the signals and generating control signals for the first and second powered joints based on the current state and the current intent.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: June 20, 2017
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Michael Goldfarb, Ryan J. Farris, Hugo A. Quintero
  • Publication number: 20170100264
    Abstract: Systems and methods for operating autonomous lower limb devices, including at least one adjustable joint and configured for at least supporting a body are provided. A method includes collecting real-time sensor information associated with the autonomous lower limb device. The method also includes receiving, over a communications link, remote data for at least one other lower limb device configured for supporting the body. The method further includes generating control data for transitioning the autonomous lower limb device from a current state in a current finite state model for operating the autonomous lower limb device to a different state in the current finite state model, where the different state is selected based on the real-time sensor information and the remote data.
    Type: Application
    Filed: February 26, 2016
    Publication date: April 13, 2017
    Inventors: Michael Goldfarb, Brian Lawson
  • Publication number: 20170095668
    Abstract: A circuit includes first and second current control sub-circuits connected in series between a DC supply voltage node and a reference voltage node and third and fourth current control sub-circuits connected in series between the DC supply voltage node and the reference voltage node. The circuit also includes a DC/DC converter with a first input terminal coupled to the first load node between the first and second current control sub-circuits, a second input terminal coupled to a second load node between the third and fourth current control sub-circuits, a first output terminal, and a second output terminal. The circuit further includes output electrodes, a routing sub-circuit for selectively coupling the output electrodes to the output terminals, and a controller configured for operating the routing sub-circuit and the current control sub-circuits to cause the DC/DC converter to supply biphasic pulses for at least one of the pairs of output electrodes.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 6, 2017
    Inventors: Michael GOLDFARB, Kevin HA, Don TRUEX