Patents by Inventor Catherine R. Wong

Catherine R. Wong 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).

  • Aluminum engine cylinder liner and method
    Patent number: 8141615
    Abstract: A method has been found for centrifugal casting engine cylinders. A mold is charged with molten aluminum alloy and particulate silicon monoxide having an average size of 0.01 mm to 0.04 mm. The mold is rotated at a velocity and period of time to distribute the particulate silicon monoxide on an inner cylinder surface. The mold is allowed to cool until the aluminum alloy solidifies. A casting is demolded characterized in a uniform inner cylinder surface of the particulate silicon monoxide in an amount of 25 volume % and thickness 1 to 5 millimeters. The engine cylinders are distinguished in resistance to wear. Cylinder liners show no appreciable wear for over 100,000 miles of use.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: March 27, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William A. Ferrando, Catherine R. Wong