Patents by Inventor Edwin H. Kraft

Edwin H. Kraft 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).

  • Ceramic capped piston
    Patent number: 4404935
    Abstract: A ceramic cap is attached to a metal piston by means of intermeshing radial flanges. A spring forces the flanges into contact with one another along an annular surface area. Spaces between the flanges allow for movement between the metal and ceramic parts to accommodate differential thermal expansion, while at the same time permitting secure contact between metal and ceramic.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: September 20, 1983
    Assignee: Kyocera International, Inc.
    Inventor: Edwin H. Kraft