Patents by Inventor Rollin R. Shriner

Rollin R. Shriner 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).

  • Case assembly with tungsten carbide inserts for ceramic tile die
    Patent number: 3932098
    Abstract: The case assembly for a ceramic tile die includes a die cavity assembly formed by an insert support member and a plurality of inserts mounted on the upper surfaces of the insert support member. The inserts are preferably formed of tungsten carbide and may be universally mounted on the insert support member to provide a plurality of usable wear surfaces. A rigid frame surrounds the die cavity assembly, and mounting means are provided to permit limited, pressure induced movement between the die cavity assembly and the rigid frame. This minimizes the tensile stress to which the walls of the die cavity assembly are subjected.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: January 13, 1976
    Assignee: Spartek Inc.
    Inventors: William W. Huber, Rollin R. Shriner, Harry N. Shuman