Patents by Inventor James Chmel

James Chmel 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).

  • Cap for investment molds for precision casting
    Patent number: 5469908
    Abstract: A cap for an investment vessel for receiving investment material comprises a platform having a contoured edge and an underside. A wedge is located on the underside of the platform and is frictionally engageable with at least a portion of an inner edge of the top of the vessel. When the cap is placed in frictional engagement with the vessel, the contoured edge provides a restricted opening to the vessel for controlling the flow of the investment material. A lip is provided on the platform at the contoured edge for channeling investment material to the opening.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: November 28, 1995
    Assignee: Belle de St. Claire
    Inventors: James Chmel, Robert P. Berger