Patents by Inventor John W. Duddles

John W. Duddles 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).

  • EGR valve having rest position
    Patent number: 7607638
    Abstract: During normal operation of diesel engines the EGR valve poppet often becomes stuck to the valve seat in the closed position, due to excessive build up of exhaust gas debris, which renders the valve inoperable. This usually occurs after the engine is shut down and the valve is seated. Features, which locate the valve poppet in an unseated position when not in use, are implemented into the EGR valve design to prevent this sticking from occurring, thereby increasing product robustness and prolonging product life.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: October 27, 2009
    Assignee: BorgWarner Inc.
    Inventors: Joseph A. Wilson, Michael J. Halsig, John W. Duddles, Hal E. Pringle
  • Single sensing multiple output system
    Patent number: 7570046
    Abstract: A sensing system for a vehicle that includes a single sensor element and multiple outputs. An engine controller is responsive to the multiple outputs, output circuits and a supervisor circuit in the system monitors the sensor element and shared circuits. If the sensor element fails, or if a connector fails or if the supervisor circuit indicates a circuit failure, one or more of the outputs will go outside of their normal operating range into a diagnostics range to allow the engine controller to take the appropriate action.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: August 4, 2009
    Assignee: BorgWarner Inc.
    Inventors: Robert D. Keefover, Todd Peterson, John W. Duddles
  • Egr Valve Having Rest Position
    Publication number: 20080230040
    Abstract: During normal operation of diesel engines the EGR valve poppet often becomes stuck to the valve seat in the closed position, due to excessive build up of exhaust gas debris, which renders the valve inoperable. This usually occurs after the engine is shut down and the valve is seated. Features, which locate the valve poppet in an unseated position when not in use, are implemented into the EGR valve design to prevent this sticking from occurring, thereby increasing product robustness and prolonging product life.
    Type: Application
    Filed: March 8, 2006
    Publication date: September 25, 2008
    Applicant: BORGWARNER INC.
    Inventors: Joseph A. Wilson, Michael J. Halsig, John W. Duddles, Hal E. Pringle
  • Method of providing shaft biasing lubrication for a short runner valve shaft
    Patent number: 7100569
    Abstract: A one piece slide in place “butterfly” valve plate for a short runner manifold of a vehicle. A method of reducing friction in an anti-chatter device.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: September 5, 2006
    Assignee: BorgWarner Inc.
    Inventors: Mark F. Lozen, John W. Duddles, Frederick K. Miller, Kevin C. Goldstein
  • Method of providing shaft biasing lubrication for a short runner valve shaft
    Patent number: 6854180
    Abstract: A method of reducing friction in an anti-chatter device. An applicator is provided which is insertable into a shaft biasing device cavity or orifice. The applicator is inserted into the cavity and a lubricant is injected through a hollow opening in the applicator. An anti-chatter device is then secured to the orifice and applies the lubricant to the short runner valve shaft via the orifice.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: February 15, 2005
    Assignee: BorgWarner Inc.
    Inventors: Mark F. Lozen, John W. Duddles, Frederick K. Miller, Kevin C. Goldstein
  • Short runner valve plate and shaft biasing lubrication
    Publication number: 20030121498
    Abstract: A one piece slide in place “butterfly” valve plate for a short runner manifold of a vehicle. A method of reducing friction in an anti-chatter device.
    Type: Application
    Filed: February 18, 2003
    Publication date: July 3, 2003
    Inventors: Mark F. Lozen, John W. Duddles, Frederick K. Miller, Kevin C. Goldstein
  • Short runner valve plate and shaft biasing lubrication
    Patent number: 6543413
    Abstract: A one piece slide in place “butterfly” valve plate for a short runner manifold of a vehicle. A method of reducing friction in an anti-chatter device.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: April 8, 2003
    Assignee: BorgWarner Inc.
    Inventors: Mark F. Lozen, John W. Duddles, Frederick K. Miller, Kevin C. Goldstein
  • Short runner valve plate and shaft biasing lubrication
    Publication number: 20020088422
    Abstract: A one piece slide in place “butterfly” valve plate for a short runner manifold of a vehicle. A method of reducing friction in an anti-chatter device.
    Type: Application
    Filed: October 10, 2001
    Publication date: July 11, 2002
    Inventors: Mark F. Lozen, John W. Duddles, Frederick K. Miller, Kevin C. Goldstein