Patents by Inventor Frederick C. Kern

Frederick C. Kern 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).

  • Retainer for injection molds
    Patent number: 4961702
    Abstract: A retainer for use in connection with injection molding that is used to retain a slide in its open position when the mold is opening. The retainer has two pivotally connected jaw members and a coiled compression spring that applies spring pressure to the jaw members as these members engage a pin that is connected to a slide when the mold is opening. The construction of the jaw members avoids undesired spreading when the pin engages the jaw members and the jaw members are constructed in a manner that enables the retainer to be easily assembled. The retainer jaw members completely surround the coil spring and protect it from dirt and only a portion of the ends of the coil spring exert a force upon the jaw members when the retainer is in use.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: October 9, 1990
    Assignee: Fairchild Industries, Inc.
    Inventor: Frederick C. Kern
  • Clamp for a mold
    Patent number: D317927
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: July 2, 1991
    Assignee: Fairchild Industries, Inc.
    Inventor: Frederick C. Kern
  • Clamp
    Patent number: D318282
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: July 16, 1991
    Assignee: Fairchild Industries, Inc.
    Inventor: Frederick C. Kern