Patents by Inventor David T. Stark

David T. Stark 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: 10527158
    Abstract: An electronic transmission range selection (ETRS) system for a motor vehicle transmission includes an ETRS housing disposed on the transmission, the ETRS housing having a magnetic field sensor in communication with a transmission controller; and a magnetic field source including a magnet component and a high magnetic permeability component. The magnetic field source disposed on a transmission selector shaft, the magnetic field source detectable by the magnetic field sensor at a plurality of predetermined positions along a movement path of the transmission selector shaft; and the magnetic field sensor detecting magnetic flux generated by the magnetic field source, and communicating magnetic field source position information to the controller. The high magnetic permeability component homogenizes the magnetic flux generated by the magnet component and the controller generates an electronic transmission mode signal based on the magnetic field source position information.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: January 7, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Sean R. Wagner, Thomas A. Perry, David T. Stark
  • Patent number: 9547049
    Abstract: A linear magnetic sensor shield system comprises first and second shield parts. The system may include first and second field sensor assemblies, each having field sensors disposed therein. The first shield part may be disposed adjacent to a first side and a third side of the first field sensor assembly, and the second shield part may be disposed adjacent to a second side of the second field sensor assembly. The shield parts may be formed of mu metal, by of example, or they may have a curved shape or a thickness in the range of about 0.015 inch to about 0.030 inch. A torque transmitting device is also provided.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: January 17, 2017
    Assignee: GM Global Technology Operations, LLC
    Inventors: David T. Stark, Daniel J. Smith, Thomas A. Perry, Joshua Charles Sautner
  • Patent number: 9476948
    Abstract: A linear magnetic sensor shield system comprises first and second shield parts. The system may include first and second field sensor assemblies, each having field sensors disposed therein. The first shield part may be disposed adjacent to a first side of the first field sensor assembly, and the second shield part may be disposed adjacent to a second side of the second field sensor assembly. The shield parts may be formed of mu metal or a mu metal and steel composite, by of example. A torque transmitting device is also provided.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: October 25, 2016
    Assignee: GM Global Technology Operations, LLC
    Inventors: David T. Stark, Daniel J. Smith, Thomas A. Perry, Thomas Wolfgang Nehl
  • Publication number: 20150301129
    Abstract: A linear magnetic sensor shield system comprises first and second shield parts. The system may include first and second field sensor assemblies, each having field sensors disposed therein. The first shield part may be disposed adjacent to a first side and a third side of the first field sensor assembly, and the second shield part may be disposed adjacent to a second side of the second field sensor assembly. The shield parts may be formed of mu metal, by of example, or they may have a curved shape or a thickness in the range of about 0.015 inch to about 0.030 inch. A torque transmitting device is also provided.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 22, 2015
    Applicant: GM Global Technology Operations LLC
    Inventors: David T. Stark, Daniel J. Smith, Thomas A. Perry, Joshua Charles Sautner
  • Publication number: 20150301130
    Abstract: A linear magnetic sensor shield system comprises first and second shield parts. The system may include first and second field sensor assemblies, each having field sensors disposed therein. The first shield part may be disposed adjacent to a first side of the first field sensor assembly, and the second shield part may be disposed adjacent to a second side of the second field sensor assembly. The shield parts may be formed of mu metal or a mu metal and steel composite, by of example. A torque transmitting device is also provided.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 22, 2015
    Applicant: GM Global Technology Operations LLC
    Inventors: David T. Stark, DANIEL J. SMITH, THOMAS A. PERRY, THOMAS WOLFGANG NEHL, Joshua Charles Sautner
  • Patent number: 6754603
    Abstract: The virtual vehicle transmission test cell includes an electric motor which simulates a fuel driven engine, an output motor which simulates the load a transmission experiences in a vehicle, and an environmental element which controls the ambient environment of the transmission and the temperature of the transmission oil within the transmission. The virtual vehicle transmission test cell reduces in-vehicle testing, reduces testing with fuel-driven test cells, and enables development of a transmission design before a corresponding engine is completed and built for testing.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: June 22, 2004
    Assignee: General Motors Corporation
    Inventors: Marlin R. Turbett, Robert M. Senseney, Steven D. Nash, Michael R. Rosati, David T. Stark, Alfonso G. Hysko, Robert W. Tator, David L. Joseph, Paul A. Piorkowski, Gary L. Stecklein, Matthew S. Castiglione, Joe Steiber, Benjamin A. Treichel, Bapiraju Surampudi
  • Publication number: 20030167143
    Abstract: The virtual vehicle transmission test cell includes an electric motor which simulates a fuel driven engine, an output motor which simulates the load a transmission experiences in a vehicle, and an environmental element which controls the ambient environment of the transmission and the temperature of the transmission oil within the transmission. The virtual vehicle transmission test cell reduces in-vehicle testing, reduces testing with fuel-driven test cells, and enables development of a transmission design before a corresponding engine is completed and built for testing.
    Type: Application
    Filed: February 25, 2003
    Publication date: September 4, 2003
    Inventors: Marlin R. Turbett, Robert M. Senseney, Steven D. Nash, Michael R. Rosati, David T. Stark, Alfonso G. Hysko, Robert W. Tator, David L. Joseph, Paul A. Piorkowski, Gary L. Stecklein, Matthew S. Castiglione, Joe Steiber, Benjamin A. Treichel, Bapiraju Surampudi