Patents by Inventor Nicholas Kokotovich

Nicholas Kokotovich 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: 9657791
    Abstract: An actuator is provided for preventing rotation of a rotary component and includes a first pawl pivotable about a first pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a first rotary direction. A second pawl is pivotable about a second pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a second rotary direction opposite the first rotary direction. The pawls are each biased toward an engaged position with the rotary component by a pawl spring. A first and a second solenoid each include an electrically activated solenoid and an armature movable from a first position for holding the pawls out of engagement with the rotary component to a second position for allowing the pawls to be engaged with the rotary component.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: May 23, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Anthony J. Corsetti, Nicholas Kokotovich, David Patrick Balgaard
  • Patent number: 9611931
    Abstract: Method for detecting a fault condition in a vehicular hydraulic circuit during a drive cycle using an electric pump includes monitoring an actual pump torque and monitoring a desired pump torque. A current confidence factor is determined based on the actual pump torque and the desired pump torque. An average confidence factor is iteratively calculated based on the current confidence factor and previously determined confidence factors. The average confidence factor is compared to a fault condition threshold. An absence of the fault condition in the hydraulic circuit is detected when the average confidence factor is at least the fault condition threshold, and a presence of the fault condition in the hydraulic circuit is detected when the average confidence factor is less than the fault condition threshold.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: April 4, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ali K. Naqvi, Andrew M. Zettel, Vincent Rawls, Nicholas Kokotovich
  • Publication number: 20160265609
    Abstract: An actuator is provided for preventing rotation of a rotary component and includes a first pawl pivotable about a first pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a first rotary direction. A second pawl is pivotable about a second pivot axis and engageable with the rotary component for preventing rotation of the rotary component in a second rotary direction opposite the first rotary direction. The pawls are each biased toward an engaged position with the rotary component by a pawl spring. A first and a second solenoid each include an electrically activated solenoid and an armature movable from a first position for holding the pawls out of engagement with the rotary component to a second position for allowing the pawls to be engaged with the rotary component.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 15, 2016
    Inventors: Anthony J. CORSETTI, Nicholas KOKOTOVICH, David Patrick BALGAARD
  • Publication number: 20130313048
    Abstract: Method for detecting a fault condition in a vehicular hydraulic circuit during a drive cycle using an electric pump includes monitoring an actual pump torque and monitoring a desired pump torque. A current confidence factor is determined based on the actual pump torque and the desired pump torque. An average confidence factor is iteratively calculated based on the current confidence factor and previously determined confidence factors. The average confidence factor is compared to a fault condition threshold. An absence of the fault condition in the hydraulic circuit is detected when the average confidence factor is at least the fault condition threshold, and a presence of the fault condition in the hydraulic circuit is detected when the average confidence factor is less than the fault condition threshold.
    Type: Application
    Filed: May 24, 2012
    Publication date: November 28, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ali K. NAQVI, Andrew M. ZETTEL, Vincent RAWLS, Nicholas KOKOTOVICH
  • Patent number: 8446113
    Abstract: Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 21, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Brian A Welchko, Konstantin S. Majarov, Silva Hiti, Steven E. Schulz, Aniket Kothari, Nicholas Kokotovich
  • Patent number: 8265821
    Abstract: A method for determining a voltage level across an electrical circuit of a powertrain includes measuring a plurality of voltage levels and utilizing a comparison test between at least two voltage levels of the plurality of voltage levels to determine the circuit voltage level.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: September 11, 2012
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Wei D. Wang, William R. Cawthorne, Aniket Kothari, Nicholas Kokotovich, Wei Ren, Bo Zhang
  • Patent number: 8248023
    Abstract: A method of externally charging a powertrain includes monitoring a voltage level of a first battery, determining when the monitored voltage level is below a first voltage threshold, and when the monitored voltage level is below the first voltage threshold, charging the first battery by supplying power from an external power source and increasing voltage of the power supplied by the external power source within the powertrain.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: August 21, 2012
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: R. Travis Schwenke, Nicholas Kokotovich, Aniket Kothari, Mario V. Maiorana, Jr., William R. Cawthorne
  • Patent number: 8214120
    Abstract: A powertrain includes an electromechanical transmission operative to transmit torque between an input member and an electric machine and an output member to transmit tractive torque. The electric machine is electrically connected to an inverter device which is electrically connected to an energy storage device. A method for operating the powertrain includes detecting a shutdown event, commanding the transmission to neutral, commanding the electric machine to cease operating in a torque generating mode, and electrically disconnecting the energy storage device from the inverter device.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: July 3, 2012
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Aniket Kothari, Nicholas Kokotovich, Stephen T. West, James E. Tarchinski, Sean E Gleason, William R. Cawthorne
  • Publication number: 20120123807
    Abstract: Systems, apparatus, methods and articles of manufacture provide for an integrated operations management system for revenue management and/or billing and accounts receivable (e.g., in an insurance or other financial context). In some embodiments, an operations management system provides for determining a complexity rating for an account (e.g., a loss sensitive insurance account). In some embodiments, the complexity rating may be based on respective answers (e.g., provided by an end user) to one or more survey questions. In some embodiments, the complexity rating may be used for determining a billing priority rating for an account.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 17, 2012
    Applicant: The Travelers Companies, Inc.
    Inventors: Vincent J. Seaver, Carolyn D. Jaworski, Anthony Snider, Nicholas Kokotovich, Ann M. McDougall, Virnitia J. Holston
  • Patent number: 8098041
    Abstract: A method of charging a powertrain includes detecting an external power source in electrical communication with the powertrain, establishing a virtual network between charging control module, and transferring charge from the external power source to the powertrain.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: January 17, 2012
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler LLC, Bayerische Motoren Werke Aktiengesellshaft
    Inventors: Nicholas Kokotovich, Aniket Kothari, Michael Bolton
  • Publication number: 20110309777
    Abstract: Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 22, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Brian A. Welchko, Konstantin S. Majarov, Silva Hiti, Steven E. Schulz, Aniket Kothari, Nicholas Kokotovich
  • Publication number: 20090115373
    Abstract: A method of charging a powertrain includes detecting an external power source in electrical communication with the powertrain, establishing a virtual network between charging control module, and transferring charge from the external power source to the powertrain.
    Type: Application
    Filed: October 16, 2008
    Publication date: May 7, 2009
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS, INC., Daimler AG, Chrysler LLC, Bayerishe Motoren Werke Aktiengesellschaft
    Inventors: Nicholas Kokotovich, Aniket Kothari, Michael Bolton
  • Publication number: 20090118916
    Abstract: A powertrain includes an electromechanical transmission operative to transmit torque between an input member and an electric machine and an output member to transmit tractive torque. The electric machine is electrically connected to an inverter device which is electrically connected to an energy storage device. A method for operating the powertrain includes detecting a shutdown event, commanding the transmission to neutral, commanding the electric machine to cease operating in a torque generating mode, and electrically disconnecting the energy storage device from the inverter device.
    Type: Application
    Filed: October 28, 2008
    Publication date: May 7, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Aniket Kothari, Nicholas Kokotovich, Stephen T. West, James E. Tarchinski, Sean Em Gleason, William R. Cawthorne
  • Publication number: 20090115377
    Abstract: A method of externally charging a powertrain includes monitoring a voltage level of a first battery, determining when the monitored voltage level is below a first voltage threshold, and when the monitored voltage level is below the first voltage threshold, charging the first battery by supplying power from an external power source and increasing voltage of the power supplied by the external power source within the powertrain.
    Type: Application
    Filed: October 20, 2008
    Publication date: May 7, 2009
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS, INC., Daimler AG, Chrysler LLC, Bayerishe Motoren Werke Aktiengesellschaft
    Inventors: R. Travis Schwenke, Nicholas Kokotovich, Aniket Kothari, Mario V. Maiorana, JR., William R. Cawthorne