Patents by Inventor Robyn S. Chaddock

Robyn S. Chaddock 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).

  • Method of releasing pressure in non-metallic injection molds
    Patent number: 6572799
    Abstract: A method of releasing pressure in a non-metallic injection mold has a pressure relief valve positioned in the molten resin flow path for handling excess resin pressure. The pressure relief valve responds to excess resin pressure in the cavity by providing an alternate resin flow path for the pressurized excess resin.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: June 3, 2003
    Assignee: Eastman Kodak Company
    Inventors: Carl E. Radzio, Jr., Richard C. Benson, Robyn S. Chaddock
  • METHOD OF RELEASING PRESSURE IN NON-METALLIC INJECTION MOLDS
    Publication number: 20030001300
    Abstract: A method of releasing pressure in a non-metallic injection mold has a pressure relief valve positioned in the molten resin flow path for handling excess resin pressure. The pressure relief valve responds to excess resin pressure in the cavity by providing an alternate resin flow path for the pressurized excess resin.
    Type: Application
    Filed: December 2, 1999
    Publication date: January 2, 2003
    Inventors: CARL E. RADZIO, RICHARD C. BENSON, ROBYN S. CHADDOCK
  • INJECTION MOLDING APPARATUS FOR A NON-METALLIC INJECTION MOLD
    Publication number: 20020192323
    Abstract: An injection molding apparatus has a non-metallic injection mold and a pressure relief valve for handling excess resin pressure in the cavity mold. The pressure relief valve responds to excess resin pressure in the hollow by providing an alternate resin passage for the pressurized excess resin.
    Type: Application
    Filed: December 2, 1999
    Publication date: December 19, 2002
    Inventors: CARL E. RADZIO, RICHARD C. BENSON, ROBYN S. CHADDOCK