Patents by Inventor Nathanial L. Field

Nathanial L. Field 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).

  • Cylinder liner insert and method of making engine block therewith
    Patent number: 4903652
    Abstract: A method of casting-in-place iron cylinder liners in light alloy, preferably aluminum, engine blocks is made possible by a cylinder liner insert comprising at least two generally cylindrical cylinder liners which are joined together along aligned portions of the liners in a "semi-siamese" fashion. The cylinder liners are joined at the lower ends of the liners with the upper combustion ends remaining independent and unattached. Alternately, narrow ribs can be formed at or arched above the upper ends of the liners to join and stabilize the upper ends of the liners during cylinder block casting operations, with such ribs ultimately being machined off during block finishing operations.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: February 27, 1990
    Assignee: Ford Motor Company
    Inventors: Nathanial L. Field, Benjamin P. Winter