Patents by Inventor Clyde D. Doney

Clyde D. Doney 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).

  • Method and apparatus for producing investment castings in a vacuum
    Patent number: 6467531
    Abstract: A gravity pour vacuum casting method and apparatus providing uniform set-up provisions for gas permeable molds regardless of mold size, shape, or mold type employed in accordance with the present invention. Apparatus includes a sprue-forming device that when combined with a disposable foundry patter and subsequently invested together as a unit forms a gas permeable mold in accordance with the present invention, and further includes a vacuum chamber configured to match corresponding counterparts of said sprue-forming device.
    Type: Grant
    Filed: October 14, 2000
    Date of Patent: October 22, 2002
    Inventor: Clyde D. Doney