Patents by Inventor Robert C. Masters

Robert C. Masters 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).

  • Apparatus and method for eliminating static charge from polystyrene beads for pattern molding
    Patent number: 5034167
    Abstract: A process for eliminating the static charge from expandable polystyrene beads during a molding cycle. Pre-expanded polystyrene beads are injected into a mold cavity by using an air stream created by a venturi-type fill gun. To prevent the beads from carrying static while being injected into the mold, the air is ionized by exposure to high energy nuclear particles prior to contact with the polystyrene beads.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: July 23, 1991
    Assignee: General Motors Corporation
    Inventor: Robert C. Masters