Patents by Inventor John David Douma

John David Douma 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).

  • Yoke assembly for a power steering apparatus
    Patent number: 7631571
    Abstract: A rack and pinion steering system including a rack slidably supported within a housing that engages in a pinion gear. A yoke assembly, including a yoke member engaging the rack, operates to guide the rack and maintain engagement of the rack and pinion during operation of the steering system. A retainer member holds a yoke plug, used in the yoke assembly, in position and also seals the yoke assembly to provide a sealed interface that protects the internal components of the steering system from water and other contaminants.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: December 15, 2009
    Assignee: Ford Global Technologies, LLC
    Inventors: John David Douma, Madhu Nambiar, Luis Carballo, Jr., Brian Robert Burchart, Michael Patrick Rodgers
  • Yoke assembly for a power steering apparatus
    Publication number: 20080006110
    Abstract: A rack and pinion steering system including a rack slidably supported within a housing that engages in a pinion gear. A yoke assembly, including a yoke member engaging the rack, operates to guide the rack and maintain engagement of the rack and pinion during operation of the steering system. A retainer member holds a yoke plug, used in the yoke assembly, in position and also seals the yoke assembly to provide a sealed interface that protects the internal components of the steering system from water and other contaminants.
    Type: Application
    Filed: July 6, 2006
    Publication date: January 10, 2008
    Inventors: John David Douma, Madhu Nambiar, Luis Carballo, Brian Robert Burchart, Michael Patrick Rodgers