Patents by Inventor Mark A. Datte

Mark A. Datte 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).

  • Sand mold member and method
    Patent number: 5582231
    Abstract: A foundry mold member made from a plurality of sand particles bound together with a binder which is concentrated at the contact points between contiguous sand particles and consists essentially of gelatins having a Bloom rating less than about 175 Bloom grams. The sand particles are first coated with a sol of the gelatin, cooled to ambient temperature and conditioned to a prescribed water content necessary to effect migration of the gelatin to the interparticle contact points upon heating of the coated particles in a pattern mold.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: December 10, 1996
    Assignee: General Motors Corporation
    Inventors: June-Sang Siak, William T. Whited, Mark A. Datte, Richard M. Schreck
  • Countergravity casting mold and core assembly
    Patent number: 4641703
    Abstract: Apparatus for the countergravity, shell-mold casting process comprising a gas-permeable shell mold sealed in the mouth of a vacuum chamber and a hollow, expendable, gas-permeable, thermally degradable, core disposed with the molding cavity for engulfment and retention by the metal being cast. The core defines a central evacuation cavity and an unobstructed vent for exhausting the evacuation cavity into the vacuum chamber such that the pressure in the evacuation cavity is substantially equal to that in the vacuum chamber during casting.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: February 10, 1987
    Assignee: General Motors Corporation
    Inventors: Karl D. Voss, Mark A. Datte, Gary F. Ruff