Patents by Inventor Charles S. Kirk

Charles S. Kirk 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).

  • Assembly and method for determining the coefficient of thermal expansion of a workpiece
    Patent number: 4924477
    Abstract: An assembly and method suitable for determining the coefficient of thermal expansion (CTE) of a workpiece. The assembly includes a dual channel laser interferometer system placed in operative association with the workpiece, and a vacuum, heating and cooling chamber surrounding the workpiece. The assembly is particularly useful for determining the CTE of a workpiece having a relatively low value, e.g., a CTE less than 0.1.times.10.sup.-6 inch/inch .degree.F. It is therefore advantageously employed for determining the CTE of a workpiece comprising a composite, like a graphite/epoxy composite, that may have a CTE in the range of .+-.0.2.times.10.sup.-6 inch/inch .degree.F.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: May 8, 1990
    Assignee: Eastman Kodak Company
    Inventors: James F. Gilmore, Carl A. Lloyd, Charles S. Kirk