Patents by Inventor David J. LEDGER

David J. LEDGER 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).

  • Kinematic compliant linkage for turbocharger
    Patent number: 11280257
    Abstract: A linkage extends between an actuator and a valve in a turbocharger. The linkage comprises two spaced member bodies having central portions with opposing curved shapes that extend between ends translatable along and rotatable about spaced pivots. Translation of one member toward the other member compresses the central portions, increasing overall stiffness of the linkage, and translation of one member away from the other member creates a gap between the central portions, allowing independent translation of the ends along the spaced pivots to compensate for misalignment between the actuator and the valve caused by heat and vibration. Another linkage extending between an actuator and a valve in a turbocharger includes two planar spaced member bodies extending between ends translatable along and rotatable about spaced pivots. The two member bodies have different thicknesses.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: March 22, 2022
    Assignee: BorgWarner Inc.
    Inventors: David J. Ledger, Sean N. Hastings, Thomas C. Harris, Jonathan R. Williams
  • Kinematic Compliant Linkage for Turbocharger
    Publication number: 20190017433
    Abstract: A linkage extends between an actuator and a valve in a turbocharger. The linkage comprises two spaced member bodies having central portions with opposing curved shapes that extend between ends translatable along and rotatable about spaced pivots. Translation of one member toward the other member compresses the central portions, increasing overall stiffness of the linkage, and translation of one member away from the other member creates a gap between the central portions, allowing independent translation of the ends along the spaced pivots to compensate for misalignment between the actuator and the valve caused by heat and vibration. Another linkage extending between an actuator and a valve in a turbocharger includes two planar spaced member bodies extending between ends translatable along and rotatable about spaced pivots. The two member bodies have different thicknesses.
    Type: Application
    Filed: January 19, 2017
    Publication date: January 17, 2019
    Applicant: BorgWarner Inc.
    Inventors: David J. LEDGER, Sean N. HASTINGS, Thomas C. HARRIS, Jonathan R. WILLIAMS