Patents by Inventor Terrance G. Cunningham

Terrance G. Cunningham 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).

  • Method for refurbishing a valve seat in a fuel injector assembly
    Patent number: 10047710
    Abstract: A method of refurbishing a fuel injector body valve seat. The method includes removing a poppet valve from the valve bore guide, machining the bore and valve seat to remove cavitation, machining to create an undercut a the stress riser, nitriding the valve bore guide and radiusing fuel passage to a sufficient depth to restore hardness thereto.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: August 14, 2018
    Assignee: DETROIT DIESEL CORPORATION
    Inventors: Roman F. Kosiorek, Terrance G. Cunningham
  • METHOD FOR REFURBISHING A VALVE SEAT IN A FUEL INJECTOR ASSEMBLY
    Publication number: 20090113707
    Abstract: A method of refurbishing a fuel injector body valve seat. The method includes removing a poppet valve from the valve bore guide, machining the bore and valve seat to remove cavitation, machining to create an undercut a the stress riser, nitriding the valve bore guide and radiusing fuel passage to a sufficient depth to restore hardness thereto.
    Type: Application
    Filed: November 7, 2007
    Publication date: May 7, 2009
    Applicant: Detroit Diesel Corporation
    Inventors: Roman F. Kosiorek, Terrance G. Cunningham