Patents by Inventor Simon Narasimhan

Simon Narasimhan 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).

  • Light weight hollow valve assembly
    Patent number: 5960760
    Abstract: An light weight hollow valve assembly for use in an engine. The intake and exhaust valve seats are of a different metallurgical composition for reducing adhesive and abrasive wear between the valve seat and the insert. The assembly 10 includes a valve 12 including a valve seat face 16. An insert 18 is mounted within the engine for cooperating in sealing engagement with the valve seat face 16. The insert 18 and the valve seat face 16 are each provided with a layer 20, 22 consisting essentially of a nitride for reducing adhesive and abrasive wear between the valve seat face 16 and the insert 18.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: October 5, 1999
    Assignee: Eaton Corporation
    Inventors: Yushu Wang, Simon Narasimhan, Les Ecklund, James Larsen
  • Engine valve assembly
    Patent number: 5934238
    Abstract: A valve assembly 10 for use in an engine. The assembly 10 includes a valve 12 including a valve seat face 16. An insert 18 is mounted within the engine for cooperating in sealing engagement with the valve seat face 16. The insert 18 and the valve seat face 16 are each provided with a layer 20, 22 consisting essentially of a nitride for reducing adhesive and abrasive wear between the valve seat face 16 and the insert 18.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: August 10, 1999
    Assignee: Eaton Corporation
    Inventors: Yushu Wang, Simon Narasimhan