Patents by Inventor Frederick C. Schaller

Frederick C. Schaller 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).

  • Automatic apparatus for molding a preform
    Patent number: 4281816
    Abstract: A preform molding apparatus includes a mold cup which has opposed top and bottom mold members and a carrier arm between the mold members. The top mold member has a concave mold recess in its bottom surface and a semi-cylindrical rim extending downwardly from the edge of the mold recess. The bottom mold member has a concave mold recess in its top surface and a mold material inlet opening into the bottom of the mold recess. The carrier arm has a semi-cylindrical opening therethrough at one edge thereof. Pneumatic cylinders have piston rods connected to the mold members and the carrier arm for moving the mold members toward and away from each other and the carrier arm transversely across and away from the mold members.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: August 4, 1981
    Assignee: RCA Corporation
    Inventors: Charles B. Carroll, Frederick C. Schaller, Ernest A. Beres