Patents by Inventor Daniel N. Ward

Daniel N. Ward 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).

  • CONTROL SHAFT SEAL
    Publication number: 20130089411
    Abstract: The propensity for gas leakage around a shaft, which connects volumes of differing pressures, in, e.g., a turbocharger is minimized in a simple cost-effective manner. The addition of a complementary pair of frusto-spherical, conical, or other profiles to the interface of the shaft and its bearing maintain concentricity of the shaft in its bore and thus improve the efficacy of existing sealing protocols.
    Type: Application
    Filed: May 24, 2011
    Publication date: April 11, 2013
    Applicant: BorgWarner Inc.
    Inventor: Daniel N. Ward
  • Bearing system for a turbocharger
    Patent number: 7189005
    Abstract: A bearing system for a turbocharger, simple in design and easy to manufacture, having desired rotational dynamics of a three piece bearing design, yet having the superior vibration damping characteristics of a one piece bearing design. The inboard end of each journal bearing includes an axial recess for receiving an outboard end of a cylindrical bearing spacer, thereby axially locating the journal bearings as well as axially and radially locating the bearing spacer.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: March 13, 2007
    Assignee: BorgWarner Inc.
    Inventor: Daniel N. Ward
  • Turbocharger bearing lubrication system
    Patent number: 6709160
    Abstract: A greatly simplified turbocharger assembly comprised of a minimum number of parts allows accurate and efficient control of oil flow over the bearings (44,46), thereby permitting excellent lubrication of the bearings with a reduced amount of oil flow through the bearing housing (16), resulting in significantly lower hydrocarbon leakage from the turbocharger into the engine or engine exhaust, and ultimately lower hydrocarbon emissions by the engine.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: March 23, 2004
    Assignee: BorgWarner, Inc.
    Inventors: Daniel N. Ward, Jaroslaw M. Kierat, Richard D. Hall, Allen W. Gray, III