Patents by Inventor Todd A. Trudeau

Todd A. Trudeau 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).

  • Surface treatment of prefinished valve seat inserts
    Patent number: 7216427
    Abstract: A prehardened valve seat insert and a process for forming a prehardened valve seat insert for insertion into a cylinder head or an engine block of an internal combustion engine. The process comprises the steps of (a) forming the valve seat insert; (b) precision machining the valve seat insert to precise tolerances so that the valve seat insert can be installed in one of the cylinder head and the engine block without the need for additional seat machining; and (c) treating the valve seat insert to form a wear resistant surface layer prior to inserting the valve seat insert into one of the cylinder head and the engine block.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: May 15, 2007
    Assignee: L. E. Jones Company
    Inventors: Todd A. Trudeau, Daniel W. Bancroft, Cong Yue Qiao, Douglas W. Dooley
  • Surface treatment of prefinished valve seat inserts
    Publication number: 20030131473
    Abstract: A prehardened valve seat insert and a process for forming a prehardened valve seat insert for insertion into a cylinder head or an engine block of an internal combustion engine. The process comprises the steps of (a) forming the valve seat insert; (b) precision machining the valve seat insert to precise tolerances so that the valve seat insert can be installed in one of the cylinder head and the engine block without the need for additional seat machining; and (c) treating the valve seat insert to form a wear resistant surface layer prior to inserting the valve seat insert into one of the cylinder head and the engine block.
    Type: Application
    Filed: December 18, 2002
    Publication date: July 17, 2003
    Inventors: Todd A. Trudeau, Daniel W. Bancroft, Cong Yue Qiao, Douglas W. Dooley
  • Surface treatment of prefinished valve seat inserts
    Patent number: 6519847
    Abstract: A method of manufacturing surface treated, prefinished valve seat inserts. The method entails forming the valve seat insert, precision machining the valve seat insert to precise tolerances so that the valve seat insert can be installed in one of the cylinder head and engine block without the need for additional seat machining and treating the valve seat insert with a wear resistant treatment prior to inserting the valve seat insert into on of the cylinder head and engine block.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: February 18, 2003
    Assignee: L. E. Jones Company
    Inventors: Todd A. Trudeau, Daniel W. Bancroft, Cong Yue Qiao, Douglas W. Dooley