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: 20230398974Abstract: 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: ApplicationFiled: August 29, 2023Publication date: December 14, 2023Inventors: David B. Snyder, Ming-Feng Hsieh
-
Publication number: 20230318516Abstract: 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: ApplicationFiled: March 31, 2022Publication date: October 5, 2023Inventors: David B. Snyder, Andrew W. Osburn, Anant Puri
-
Patent number: 11772628Abstract: 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: GrantFiled: February 22, 2022Date of Patent: October 3, 2023Assignee: CUMMINS INC.Inventors: David B. Snyder, Ming-Feng Hsieh
-
Publication number: 20230264672Abstract: 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: ApplicationFiled: February 15, 2023Publication date: August 24, 2023Applicant: Cummins Inc.Inventors: Chunyi Xia, Andrew W. Osburn, David B. Snyder, Adam C. Cecil, Anant Puri, Ming-Feng Hsieh, Timothy Shipp
-
Publication number: 20220281432Abstract: 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: ApplicationFiled: February 22, 2022Publication date: September 8, 2022Inventors: David B. Snyder, Ming-Feng Hsieh
-
Patent number: 10605213Abstract: 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: GrantFiled: August 19, 2016Date of Patent: March 31, 2020Assignee: 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: 10465643Abstract: 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: GrantFiled: July 31, 2014Date of Patent: November 5, 2019Assignee: Cummins Inc.Inventors: Norman C. Blizard, Timothy P. Lutz, David B. Snyder
-
Publication number: 20170226973Abstract: 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: ApplicationFiled: July 31, 2014Publication date: August 10, 2017Inventors: Norman C. Blizard, Timothy P. Lutz, David B. Snyder
-
Publication number: 20170051713Abstract: 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: ApplicationFiled: August 19, 2016Publication date: February 23, 2017Inventors: 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: 7810284Abstract: 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: GrantFiled: April 30, 2007Date of Patent: October 12, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Murphy, David B. Snyder, Michell R. Shippy, Michael M. Norrito
-
Publication number: 20080263960Abstract: 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: ApplicationFiled: April 30, 2007Publication date: October 30, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: James M. Murphy, David B. Snyder, Michell R. Shippy, Michael M. Norrito
-
Chimeric infectious bursal disease virus cDNA clones, expression products and vaccines based thereon
Patent number: 6156314Abstract: 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: GrantFiled: June 15, 1999Date of Patent: December 5, 2000Assignee: The University of Maryland College ParkInventors: Vikram Vakharia, David B. Snyder, Stephanie A. Mengel-Whersat -
Chimeric infectious bursal disease virus cDNA clones, expression products and vaccines based thereon
Patent number: 6017759Abstract: 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: GrantFiled: February 27, 1998Date of Patent: January 25, 2000Assignee: University of Maryland College ParkInventors: Vikram Vakharia, David B. Snyder, Stephanie A. Mengel-Whersat -
Chimeric infectious bursal disease virus CDNA clones, expression products and vaccines based thereon
Patent number: 5788970Abstract: 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: GrantFiled: March 29, 1994Date of Patent: August 4, 1998Assignee: The University of Maryland College ParkInventors: Vikram Vakharia, David B. Snyder, Stephanie A. Mengel-Whersat -
Patent number: 5632989Abstract: 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: GrantFiled: September 15, 1992Date of Patent: May 27, 1997Assignee: University of MarylandInventors: David B. Snyder, Vikram Vakharia, Heinrich D. Luetticken
-
Patent number: 5518724Abstract: 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: GrantFiled: September 15, 1992Date of Patent: May 21, 1996Assignee: University of MarylandInventors: David B. Snyder, deceased, Vikram Vakharia
-
Patent number: 5064646Abstract: 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: GrantFiled: August 2, 1988Date of Patent: November 12, 1991Assignee: The University of MarylandInventor: David B. Snyder
-
Patent number: 4956452Abstract: 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: GrantFiled: June 12, 1987Date of Patent: September 11, 1990Assignee: The University of MarylandInventors: David B. Snyder, Warren W. Marquardt, Sammy L. Gorham, Dolores P. Lana
-
Patent number: 4908305Abstract: 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: GrantFiled: October 21, 1987Date of Patent: March 13, 1990Assignee: The University of MarylandInventor: David B. Snyder