Patents by Inventor Robert W. Horst

Robert W. Horst 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: 20190109533
    Abstract: A circuit for converting DC to AC power or AC to DC power comprises a storage capacitor, boost and buck inductors and switching elements. The switches are controlled to steer current to and from the storage capacitor to cancel DC input ripple or to provide near unity power factor AC input. The capacitor is alternately charged to high positive or negative voltages with an average DC bias near zero. The circuit is configured to deliver high-efficiency power in applications including industrial equipment, home appliances, mobility devices and electric vehicle applications.
    Type: Application
    Filed: November 29, 2018
    Publication date: April 11, 2019
    Inventor: Robert W. Horst
  • Publication number: 20190015284
    Abstract: An orthosis includes a first portion and a second portion configured to attach on opposite sides of a joint. An actuator is configured to apply a force between the first and second portions. The actuator includes a first spool and a second spool rotatably mounted to the first portion. An output pulley is mounted to the second portion. A belt has a first end wrapped around the first spool, a second end wrapped around the second spool, and a mid-portion wrapped around the output pulley. The actuator is configured to rotate the first and second spools. The rotation of the first spool pulls the belt a given length, and the rotation of the second spool feeds the belt less than the given length, so as to pull the output pulley towards the first portion to pull the second portion towards the first portion.
    Type: Application
    Filed: February 9, 2018
    Publication date: January 17, 2019
    Inventors: Robert W. HORST, Richard R. MARCUS
  • Patent number: 10179078
    Abstract: The invention relates to embodiments of methods for extending a subject-controllable range of joint motion, and for increasing subject control of joint movement within a range of motion. Embodiments include fastening a powered device around a joint so as to be able to control the joint, allowing the subject to move the joint within a range of volitional motion, and then engaging the powered device to support movement of the joint into an expanded, rehabilitative range. In some embodiments, the device supports joint movement by substantially providing the force to move the joint beyond the volitional boundary. In other embodiments, supporting movement includes the subject substantially providing the force, and the device allowing movement only in a desired direction. The invention further relates to a system for increasing the functional capability of a joint by implementing embodiments of the method.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: January 15, 2019
    Assignee: AlterG, Inc.
    Inventors: Kern S. Bhugra, Robert W. Horst, Robert L. Jardine
  • Patent number: 10177648
    Abstract: A circuit for converting DC to AC power or AC to DC power comprises a storage capacitor, boost and buck inductors and switching elements. The switches are controlled to steer current to and from the storage capacitor to cancel DC input ripple or to provide near unity power factor AC input. The capacitor is alternately charged to high positive or negative voltages with an average DC bias near zero. The circuit is configured to deliver high-efficiency power in applications including industrial equipment, home appliances, mobility devices and electric vehicle applications.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: January 8, 2019
    Inventor: Robert W. Horst
  • Publication number: 20180109175
    Abstract: A circuit for converting DC to AC power or AC to DC power comprises a storage capacitor, boost and buck inductors and switching elements. The switches are controlled to steer current to and from the storage capacitor to cancel DC input ripple or to provide near unity power factor AC input. The capacitor is alternately charged to high positive or negative voltages with an average DC bias near zero. The circuit is configured to deliver high-efficiency power in applications including industrial equipment, home appliances, mobility devices and electric vehicle applications.
    Type: Application
    Filed: December 13, 2017
    Publication date: April 19, 2018
    Inventor: Robert W. Horst
  • Patent number: 9889058
    Abstract: An orthosis includes a first portion and a second portion configured to attach on opposite sides of a joint. An actuator is configured to apply a force between the first and second portions. The actuator includes a first spool and a second spool rotatably mounted to the first portion. An output pulley is mounted to the second portion. A belt has a first end wrapped around the first spool, a second end wrapped around the second spool, and a mid-portion wrapped around the output pulley. The actuator is configured to rotate the first and second spools. The rotation of the first spool pulls the belt a given length, and the rotation of the second spool feeds the belt less than the given length, so as to pull the output pulley towards the first portion to pull the second portion towards the first portion.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 13, 2018
    Assignee: AlterG, Inc.
    Inventors: Robert W. Horst, Richard R. Marcus
  • Patent number: 9893604
    Abstract: A circuit for converting DC to AC power or AC to DC power comprises a storage capacitor, boost and buck inductors and switching elements. The switches are controlled to steer current to and from the storage capacitor to cancel DC input ripple or to provide near unity power factor AC input. The capacitor is alternately charged to high positive or negative voltages with an average DC bias near zero. The circuit is configured to deliver high-efficiency power in applications including industrial equipment, home appliances, mobility devices and electric vehicle applications.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: February 13, 2018
    Inventor: Robert W. Horst
  • Publication number: 20170367918
    Abstract: Portable devices and methods for preventing deep vein thrombosis (DVT) by assuring that the ankle is flexed and extended sufficiently to promote blood flow in the lower leg are disclosed. The device includes an actuator with a free movement mode that allows a patient to move freely between activations or to initiate movement to delay a next automatic activation.
    Type: Application
    Filed: May 5, 2017
    Publication date: December 28, 2017
    Inventors: Robert W. HORST, Kern S. BHUGRA, Thomas J. FOGARTY
  • Publication number: 20170231852
    Abstract: Portable devices and methods for preventing deep vein thrombosis (DVT) by assuring that the ankle is flexed and extended sufficiently to promote blood flow in the lower leg are disclosed. The device includes an actuator with a free movement mode that allows a patient to move freely between activations or to initiate movement to delay a next automatic activation.
    Type: Application
    Filed: September 22, 2016
    Publication date: August 17, 2017
    Inventors: Robert W. HORST, Kern BHUGRA, Thomas J. FOGARTY
  • Publication number: 20170128769
    Abstract: A differential air pressure system has a pressure bag with windows and preferred folding configuration such that when the bag is folded no window is folded. The pressure bag is supported by a lift support that is proximal to a user control panel and adjacent to or nearly adjacent to the user who is coupled to the pressure bag. A treadmill base for use with differential air pressure equipment is provided. There are various improvements provided to adapt the operations of the DAP system via the use of separate pressure volume and non-pressure volume portions of the treadmill base. Various improvements to serviceability and repairs are provided by placement of components outside of the pressure volume portion or by providing one or more pressure volume access points.
    Type: Application
    Filed: June 18, 2015
    Publication date: May 11, 2017
    Inventors: Philip W. LONG, Eric R. KUEHNE, Babu S. RAHMAN, Clifford T. JUE, Sean Tremaine WHALEN, Gregory P. MARECEK, Robert W. HORST, Adrian ABRAHAMI, Chase Camden CURTISS, Emma ESSOCK-BURNS
  • Patent number: 9474673
    Abstract: Portable devices and methods for preventing deep vein thrombosis (DVT) by assuring that the ankle is flexed and extended sufficiently to promote blood flow in the lower leg are disclosed. The device includes an actuator with a free movement mode that allows a patient to move freely between activations or to initiate movement to delay a next automatic activation.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: October 25, 2016
    Assignee: AlterG, Inc.
    Inventors: Robert W. Horst, Kern Bhugra, Thomas J. Fogarty
  • Publication number: 20160183872
    Abstract: A general-purpose force sensor, which can be used with an orthotic device, is provided utilizing both resistive and capacitive techniques for improved accuracy and reliability compared to either type of sensor alone. The system can detect internal fault conditions and continues to operate correctly despite the failure of one of the sensors. The sensor can be self-calibrating to give accurate readings despite changes in the physical properties of the sensing elements over time.
    Type: Application
    Filed: November 4, 2015
    Publication date: June 30, 2016
    Inventors: Robert W. HORST, John C. WESTMORELAND, Charles D. REMSBERG
  • Publication number: 20150374573
    Abstract: An orthosis includes a first portion and a second portion configured to attach on opposite sides of a joint. An actuator is configured to apply a force between the first and second portions. The actuator includes a first spool and a second spool rotatably mounted to the first portion. An output pulley is mounted to the second portion. A belt has a first end wrapped around the first spool, a second end wrapped around the second spool, and a mid-portion wrapped around the output pulley. The actuator is configured to rotate the first and second spools. The rotation of the first spool pulls the belt a given length, and the rotation of the second spool feeds the belt less than the given length, so as to pull the output pulley towards the first portion to pull the second portion towards the first portion.
    Type: Application
    Filed: March 13, 2014
    Publication date: December 31, 2015
    Inventors: Robert W. HORST, Richard R. MARCUS
  • Patent number: 9131873
    Abstract: A foot pad device includes a foot pad, force sensors that provide force data, sensor electronics coupled to the force sensors, and a processor. The foot pad includes a ball region configured to be located under a ball of the foot of the user or a heel region configured to be located under a heel of the foot of the user. At least a portion of the force sensors is located in the ball region or the heel region of the foot pad. The sensor electronics include a flexible circuit with force sensor connection paths adapted to transmit force data from the force sensors and are configured to condition the force data to be within a conditioned force data range. The processor is configured to calculate a weight value based on the conditioned force data, a gain value, and an offset value.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: September 15, 2015
    Assignee: AlterG, Inc.
    Inventors: Robert W. Horst, Robert L. Jardine, Jonathan Smith, Edith Arnold
  • Publication number: 20140207037
    Abstract: A method for controlling movement using an active powered device including an actuator, joint position sensor, muscle stress sensor, and control system. The device provides primarily muscle support although it is capable of additionally providing joint support (hence the name “active muscle assistance device”). The device is designed for operation in several modes to provide either assistance or resistance to a muscle for the purpose of enhancing mobility, preventing injury, or building muscle strength. The device is designed to operate autonomously or coupled with other like device(s) to provide simultaneous assistance or resistance to multiple muscles.
    Type: Application
    Filed: March 25, 2014
    Publication date: July 24, 2014
    Inventor: Robert W. HORST
  • Publication number: 20140131120
    Abstract: A foot pad device includes a foot pad, force sensors that provide force data, sensor electronics coupled to the force sensors, and a processor. The foot pad includes a ball region configured to be located under a ball of the foot of the user or a heel region configured to be located under a heel of the foot of the user. At least a portion of the force sensors is located in the ball region or the heel region of the foot pad. The sensor electronics include a flexible circuit with force sensor connection paths adapted to transmit force data from the force sensors and are configured to condition the force data to be within a conditioned force data range. The processor is configured to calculate a weight value based on the conditioned force data, a gain value, and an offset value.
    Type: Application
    Filed: January 23, 2014
    Publication date: May 15, 2014
    Inventors: Robert W. HORST, Robert L. JARDINE, Jonathan SMITH, Edith ARNOLD
  • Patent number: 8679040
    Abstract: A method for controlling movement using an active powered device including an actuator, joint position sensor, muscle stress sensor, and control system. The device provides primarily muscle support although it is capable of additionally providing joint support (hence the name “active muscle assistance device”). The device is designed for operation in several modes to provide either assistance or resistance to a muscle for the purpose of enhancing mobility, preventing injury, or building muscle strength. The device is designed to operate autonomously or coupled with other like device(s) to provide simultaneous assistance or resistance to multiple muscles.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: March 25, 2014
    Assignee: AlterG, Inc.
    Inventor: Robert W. Horst
  • Patent number: 8639455
    Abstract: A foot pad device and a method of obtaining weight data from a force sensor in a foot pad worn by a user engaging in a footstep, including placing the force sensor under the ball of the foot of the user and/or the heel of the foot of the user; receiving an entered patient weight value for the user; collecting force data from the force sensor; calculating a weight value based on the collected force data and a scaling and/or offset parameter; comparing the calculated weight value to the entered patient weight value; comparing the calculated weight value to zero; adjusting the scaling and/or offset parameter; and repeating the steps periodically. The method may include comparing the collected force data to a functionality indication range, flagging the force sensor if the collected force data is outside the functionality indication range, and disregarding force data from the flagged force sensor.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: January 28, 2014
    Assignee: AlterG, Inc.
    Inventors: Robert W. Horst, Robert L. Jardine, Jonathan Smith, Edith Arnold
  • Publication number: 20130345601
    Abstract: The invention relates to embodiments of methods for extending a subject-controllable range of joint motion, and for increasing subject control of joint movement within a range of motion. Embodiments include fastening a powered device around a joint so as to be able to control the joint, allowing the subject to move the joint within a range of volitional motion, and then engaging the powered device to support movement of the joint into an expanded, rehabilitative range. In some embodiments, the device supports joint movement by substantially providing the force to move the joint beyond the volitional boundary. In other embodiments, supporting movement includes the subject substantially providing the force, and the device allowing movement only in a desired direction. The invention further relates to a system for increasing the functional capability of a joint by implementing embodiments of the method.
    Type: Application
    Filed: June 6, 2013
    Publication date: December 26, 2013
    Inventors: Kern S. BHUGRA, Robert W. HORST, Robert L. JARDINE
  • Publication number: 20130261511
    Abstract: A therapy and mobility assistance system used by a patient that includes a leg device worn on the leg of the patient that provides assistance and/or resistance to enhance the mobility of the leg of the patient, a therapy shuttle that facilitates therapeutic extension and flexion of at least one of the joints of the leg of the patient, and an appendage fastener that selectively couples the therapy shuttle and the leg device. The therapy and mobility assistance system may additionally include a guide track that constrains motion of the therapy shuttle along a path.
    Type: Application
    Filed: May 31, 2013
    Publication date: October 3, 2013
    Inventors: Jonathan A. SMITH, Edith Merle ARNOLD, Kern BHUGRA, Robert W. HORST, Richard R. MARCUS