Patents by Inventor Stanley R. Limb

Stanley R. Limb 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).

  • Combination vacuum assist centrifugal casting apparatus and method
    Patent number: 5179995
    Abstract: A centrifugal vacuum assist ambient air casting apparatus and method to fill a casting flask having a mold with a pour opening in communication with the pour opening of a casting crucible filled with molten metal and ceramics comprising: centrifugally spinning the casting flask and casting crucible with their pour openings aligned such that the resulting centrifugal forces empty the contents of the casting crucible into the casting flask, while simultaneously applying a directional vacuum to the casting flask in alignment with the resultant centrifugal forces to evacuate trapped gases from the mold and assist in drawing in the molten metal and ceramics into the mold.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: January 19, 1993
    Inventor: Stanley R. Limb