Patents by Inventor William T. Whited

William T. Whited 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