Patents by Inventor David B. Snyder

David B. Snyder 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: 20230398974
    Abstract: The present disclosure provides a hybrid powertrain system, comprising: an engine; a motor/generator (“MG”); a clutch coupled to the engine and the MG; a transmission coupled to the MG; an energy storage system connected to the MG; and a controller coupled to the engine, the MG, the clutch, the transmission and the energy storage system. The controller is configured to initiate an engine stop, allow engine torque and MG torque to reduce to zero or near zero, shift the transmission to a neutral gear, cause the MG to operate in a generator mode, thereby loading the engine to recover kinetic energy from the engine, disengage the clutch to decouple the MG from the engine, increase the speed of the MG to a target speed, and shift the transmission into gear in response to the MG reaching the target speed.
    Type: Application
    Filed: August 29, 2023
    Publication date: December 14, 2023
    Inventors: David B. Snyder, Ming-Feng Hsieh
  • Publication number: 20230318516
    Abstract: A controller for controlling flow of coolant to one or more components of a vehicle is disclosed. The controller determines respective amounts of heat expected to be rejected by the one or more components of the vehicle in a steady state of operation at current operating conditions of the one or more components, and generates a feedforward flow control signal based at least in part on the determined amounts of heat and a target temperature for the one or more components. The controller generates a controller output signal based at least in part on the feedforward control signal, and provides the controller output signal to the cooling system to control flow of coolant to the one or more components of the vehicle from the cooling system in accordance with the determined amounts of heat expected to be rejected by the one or more components of the vehicle.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: David B. Snyder, Andrew W. Osburn, Anant Puri
  • Patent number: 11772628
    Abstract: Examples of hybrid powertrain systems are provided herein. The system includes: an engine; a motor/generator (“MG”); a clutch coupled to the engine and the MG; a transmission coupled to the MG; an energy storage system connected to the MG; and a controller coupled to the engine, the MG, the clutch, the transmission and the energy storage system. The controller is configured to initiate an engine stop, allow engine torque and MG torque to reduce to zero or near zero, shift the transmission to a neutral gear, cause the MG to operate in a generator mode, thereby loading the engine to recover kinetic energy from the engine, disengage the clutch to decouple the MG from the engine, increase the speed of the MG to a target speed, and shift the transmission into gear in response to the MG reaching the target speed.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: October 3, 2023
    Assignee: CUMMINS INC.
    Inventors: David B. Snyder, Ming-Feng Hsieh
  • Publication number: 20230264672
    Abstract: In a system having a hybrid powertrain having a piston internal combustion engine, and a motor/generator, and the motor generator being coupleable to a clutch and thereby to a gearbox, the engine further being equipped with a valvetrain control system operable to change the engine valve operation between a first mode in which the engine can operate in a conventional internal combustion mode and a second mode in which pumping losses are reduced when the engine is not operating in a conventional internal combustion mode. This allows it to be rotated without generating power, in a hybrid mode, with minimal losses.
    Type: Application
    Filed: February 15, 2023
    Publication date: August 24, 2023
    Applicant: Cummins Inc.
    Inventors: Chunyi Xia, Andrew W. Osburn, David B. Snyder, Adam C. Cecil, Anant Puri, Ming-Feng Hsieh, Timothy Shipp
  • Publication number: 20220281432
    Abstract: The present disclosure provides a hybrid powertrain system, comprising: an engine; a motor/generator (“MG”); a clutch coupled to the engine and the MG; a transmission coupled to the MG; an energy storage system connected to the MG; and a controller coupled to the engine, the MG, the clutch, the transmission and the energy storage system. The controller is configured to initiate an engine stop, allow engine torque and MG torque to reduce to zero or near zero, shift the transmission to a neutral gear, cause the MG to operate in a generator mode, thereby loading the engine to recover kinetic energy from the engine, disengage the clutch to decouple the MG from the engine, increase the speed of the MG to a target speed, and shift the transmission into gear in response to the MG reaching the target speed.
    Type: Application
    Filed: February 22, 2022
    Publication date: September 8, 2022
    Inventors: David B. Snyder, Ming-Feng Hsieh
  • Patent number: 10605213
    Abstract: An injector combustion shield assembly comprising a bore configured to receive a fuel injector, the bore including a fluid opening in fluid communication with a fluid jacket and a fluid outlet positioned within an annular wall of the bore; and a valve positioned between the fluid jacket and the fluid opening and configured to selectively permit a fluid from the fluid jacket to enter the bore, the valve being movable between an open configuration to permit fluid flow from the fluid jacket into the bore via the fluid opening and a closed configuration to prevent fluid flow from the fluid jacket into the bore.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: March 31, 2020
    Assignee: Cummins Inc.
    Inventors: Lester L. Peters, David L. Buchanan, Timothy P. Lutz, David B. Snyder, Derek G. Weiler, Clayton R. Westerfeld, Julie Anne Colin, Akintomide K. Akinola, Joseph Eric Parlow, Steven J. Kolhouse
  • Patent number: 10465643
    Abstract: A method of reducing carbonaceous deposits on a fuel injector is provided in which a first fuel composition is supplied to the fuel injector in a dual fuel engine, the first fuel composition comprising natural gas fuel and a first percentage of diesel fuel; and a second fuel composition is supplied to the fuel injector in a dual fuel engine, the second fuel composition comprising a second percentage of diesel fuel that is greater than the first percentage of diesel fuel to cause cavitation to occur within the fuel injector, thereby reducing carbonaceous deposits.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: November 5, 2019
    Assignee: Cummins Inc.
    Inventors: Norman C. Blizard, Timothy P. Lutz, David B. Snyder
  • Publication number: 20170226973
    Abstract: A method of reducing carbonaceous deposits on a fuel injector is provided in which a first fuel composition is supplied to the fuel injector in a dual fuel engine, the first fuel composition comprising natural gas fuel and a first percentage of diesel fuel; and a second fuel composition is supplied to the fuel injector in a dual fuel engine, the second fuel composition comprising a second percentage of diesel fuel that is greater than the first percentage of diesel fuel to cause cavitation to occur within the fuel injector, thereby reducing carbonaceous deposits.
    Type: Application
    Filed: July 31, 2014
    Publication date: August 10, 2017
    Inventors: Norman C. Blizard, Timothy P. Lutz, David B. Snyder
  • Publication number: 20170051713
    Abstract: An injector combustion shield assembly comprising a bore configured to receive a fuel injector, the bore including a fluid opening in fluid communication with a fluid jacket and a fluid outlet positioned within an annular wall of the bore; and a valve positioned between the fluid jacket and the fluid opening and configured to selectively permit a fluid from the fluid jacket to enter the bore, the valve being movable between an open configuration to permit fluid flow from the fluid jacket into the bore via the fluid opening and a closed configuration to prevent fluid flow from the fluid jacket into the bore.
    Type: Application
    Filed: August 19, 2016
    Publication date: February 23, 2017
    Inventors: Lester L. Peters, David L. Buchanan, Timothy P. Lutz, David B. Snyder, Derek G. Weiler, Clayton R. Westerfeld, Julie Anne Colin, Akintomide K. Akinola, Joseph Eric Parlow, Steven J. Kolhouse
  • Patent number: 7810284
    Abstract: A vehicle window assembly, preferably for the rear of a pickup cab having a sliding glass member, is provided with a window frame molding having an integrated fluid inlet, fluid outlet and circuitous flow channel that doubles back on itself and connects the fluid inlet with the fluid outlet to permit fluid flow through the molding, thereby permitting water that has entered through the sliding glass member to drain from interior compartment to the outside of the vehicle while minimizing the introduction of road and wind noise in the interior compartment.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: October 12, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: James M. Murphy, David B. Snyder, Michell R. Shippy, Michael M. Norrito
  • Publication number: 20080263960
    Abstract: A vehicle window assembly, preferably for the rear of a pickup cab having a sliding glass member, is provided with a window frame molding having an integrated fluid inlet, fluid outlet and circuitous flow channel that doubles back on itself and connects the fluid inlet with the fluid outlet to permit fluid flow through the molding, thereby permitting water that has entered through the sliding glass member to drain from interior compartment to the outside of the vehicle while minimizing the introduction of road and wind noise in the interior compartment.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: James M. Murphy, David B. Snyder, Michell R. Shippy, Michael M. Norrito
  • Patent number: 6156314
    Abstract: Chimeric cDNA for the expression of immunogenic polypeptides include the genetic epitopic determinants for a base infectious bursal disease virus strain and at least one other infectious bursal disease virus strain. The genetic epitopic determinants encode amino acids or amino acid sequences which define epitopes bound to by previously established monoclonal antibodies. The immunogens expressed by the cDNA may be employed to provide a vaccine against a plurality of IBDV strains. The epitopic determinant of IBDV lethal strains has been detected, and an immunogen for conferring immunity with respect thereto is disclosed. Similarly, a monoclonal antibody specific for IBDV lethal strains is identified, and a vaccine for passive immunization therewith is also disclosed. Immunogens exhibiting conformational epitopes, in the form of virus-like particles, are effective in the preparation of vaccines.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: December 5, 2000
    Assignee: The University of Maryland College Park
    Inventors: Vikram Vakharia, David B. Snyder, Stephanie A. Mengel-Whersat
  • Patent number: 6017759
    Abstract: Chimeric cDNA for the expression of immunogenic polypeptides include the genetic epitopic determinants for a base infectious bursal disease virus strain and at least one other infectious bursal disease virus strain. The genetic epitopic determinants encode amino acids or amino acid sequences which define epitopes bound to by previously established monoclonal antibodies. The immunogens expressed by the cDNA may be employed to provide a vaccine against a plurality of IBDV strains. The epitopic determinant of IBDV lethal strains has been detected, and an immunogen for conferring immunity with respect thereto is disclosed. Similarly, a monoclonal antibody specific for IBDV lethal strains is identified, and a vaccine for passive immunization therewith is also disclosed. Immunogens exhibiting conformational epitopes, in the form of virus-like particles, are effective in the preparation of vaccines.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: January 25, 2000
    Assignee: University of Maryland College Park
    Inventors: Vikram Vakharia, David B. Snyder, Stephanie A. Mengel-Whersat
  • Patent number: 5788970
    Abstract: Chimeric cDNA for the expression of immunogenic polypeptides include the genetic epitopic determinants for a base infectious bursal disease virus strain and at least one other infectious bursal disease virus strain. The genetic epitopic determinants encode amino acids or amino acid sequences which define epitopes bound to by previously established monoclonal antibodies. The immunogens expressed by the cDNA may be employed to provide a vaccine against a plurality of IBDV strains. The epitopic determinant of IBDV lethal strains has been detected, and an immunogen for conferring immunity is disclosed. Similarly, a monoclonal antibody specific for IBDV lethal strains is identified, and a vaccine for passive immunization is also disclosed. Immunogens exhibiting conformational epitopes, in the form of virus-like particles, are effective in the preparation of vaccines.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: August 4, 1998
    Assignee: The University of Maryland College Park
    Inventors: Vikram Vakharia, David B. Snyder, Stephanie A. Mengel-Whersat
  • Patent number: 5632989
    Abstract: Live, attenuated Delaware infectious bursal disease viruses are screened for effectiveness by a monoclonal antibody specific for said Delaware strain. Those which are not bound by the antibody are not or may not be as effective in conferring protection against homologous wild type infectious bursal disease infection. Currently available live, attenuated vaccines do not include a virus having the binding site specified. A monoclonal antibody specific for the Delaware strain also provides a vaccine for passive immunization.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: May 27, 1997
    Assignee: University of Maryland
    Inventors: David B. Snyder, Vikram Vakharia, Heinrich D. Luetticken
  • Patent number: 5518724
    Abstract: A new virus not neutralized or bound by monoclonal antibodies which are group neutralizing to all IBDV vaccines of current art, and capable of inducing infectious bursal disease in poultry is identified, in essentially pure form. A test kit, and assay for the presence of the virus is disclosed, together with the vaccine incorporating the virus. A monoclonal antibody Mab 50, which neutralizes the virus, form the basis of an alternative vaccine.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: May 21, 1996
    Assignee: University of Maryland
    Inventors: David B. Snyder, deceased, Vikram Vakharia
  • Patent number: 5064646
    Abstract: A new virus not neutralized or bound by monoclonal antibodies which bind and neutralize all IBD vaccines of current art, and capable of inducing infectious bursal disease in poultry is identified, in essentially pure form. A test kit, and assay for the presence of the virus is disclosed, together with the vaccine incorporating the virus.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: November 12, 1991
    Assignee: The University of Maryland
    Inventor: David B. Snyder
  • Patent number: 4956452
    Abstract: Monoclonal antibodies effective in preventing infectious bursal disease in chickens, by neutralizing one or more virus strains thereof, have been isolated and obtained from deposited hybridomas. Vaccination of an entire poultry population with a vaccine prepared from these monoclonal antibodies gives a uniform level of protection against all strains of infectious bursal disease tested. The monoclonal antibodies were effective in inducing priming for an active anti-viral response in a heterologous host.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: September 11, 1990
    Assignee: The University of Maryland
    Inventors: David B. Snyder, Warren W. Marquardt, Sammy L. Gorham, Dolores P. Lana
  • Patent number: 4908305
    Abstract: A method for determining the level of infectious bursal disease virus IBDV neutralizing antibody in poultry comprising a labeled monoclonal antibody R63 having the IBDV neutralizing capability of the monoclonal antibody expressed by hybridoma cell line ATCC HB-9490. Monoclonal antibody R63 is specific to all known IBDV strains and serotypes and competes only with itself and other antibodies recognizing the same neutralizing epitope present in poultry sera. In a competition assay, the increase in unbound labeled monoclonal antibody is an indication of the level of IBDV neutralizing antibody present in poultry sera.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: March 13, 1990
    Assignee: The University of Maryland
    Inventor: David B. Snyder