Patents by Inventor Jerry D. Gammill

Jerry D. Gammill 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).

  • Conformed valve spring wear plate
    Patent number: 5443242
    Abstract: The valve spring wear plate is proposed for use in a locomotive engine cylinder head to protect the areas of the cylinder head each acting as a valve spring seat from becoming grooved by the action of the spring thereagainst. The wear plate accommodates one spring seat at each end thereof, the two end portions being connected together by a narrow bridge portion, the bridge portion keeping the ends from rotational movement caused by action of the spring thereagainst.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: August 22, 1995
    Assignee: Gammill Parts, Inc.
    Inventors: Jerry D. Gammill, Randy Frank
  • Welding method for cylinder head repair
    Patent number: 4918805
    Abstract: A method for weld repair and rebuilding of worn and cracked diesel engine cylinder heads of the pot-type is used in railway locomotive diesel engines and the like. The method involves carefully controlled preheating, welding and cooling steps.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: April 24, 1990
    Assignee: General Motors Corporation
    Inventors: Kenneth J. Liszka, Daniel J. Dobruse, Steve E. Potopa, Charles E. Gammill, Jerry D. Gammill