Patents by Inventor Dave P. Knicklebine

Dave P. Knicklebine 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).

  • Molded article having hollow rim portion and process for producing articles
    Patent number: 6887406
    Abstract: A process for producing an injection molded article with a hollow rim portion in an injection molding machine including the steps of injecting a short shot of injection molding material into a mold via an injection nozzle, permitting a mold cavity to fill in an unbalanced manner as a result of a gas channel formed in a wall of the mold, closing the injection nozzle; and injecting a pressurized gas into the short shot of injection molding material, wherein the pressurized gas travels through the gas channel into a rim portion of the mold thereby expanding the injection molding material throughout the mold and simultaneously creating a hollow cavity within the rim portion of the mold.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: May 3, 2005
    Assignee: Ames Planter, Inc.
    Inventors: Frank J. Rice, Bruce A. Laabs, Jr., Dave P. Knicklebine
  • Molded article having hollow rim portion and process for producing articles
    Publication number: 20040096602
    Abstract: A process for producing an injection molded article with a hollow rim portion in an injection molding machine including the steps of injecting a short shot of injection molding material into a mold via an injection nozzle, permitting a mold cavity to fill in an unbalanced manner as a result of a gas channel formed in a wall of the mold, closing the injection nozzle; and injecting a pressurized gas into the short shot of injection molding material, wherein the pressurized gas travels through the gas channel into a rim portion of the mold thereby expanding the injection molding material throughout the mold and simultaneously creating a hollow cavity within the rim portion of the mold.
    Type: Application
    Filed: December 5, 2003
    Publication date: May 20, 2004
    Inventors: Frank J. Rice, Bruce A. Laabs Jr, Dave P. Knicklebine