Patents by Inventor DAVID CHARLES HELENIUS

DAVID CHARLES HELENIUS 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).

  • Collapsing core part retainer sleeve
    Patent number: 9011138
    Abstract: An injection molding tool having a collapsible core which is movably mounted with respect to a mold plate. The mold plate is movably mounted with respect to a stripper plate that can be used to eject or remove the molded part from the injection molding tool. A retainer is fixedly positioned with respect to the mold plate so that it contacts at least a portion of a molded part when in a mold position. The retainer can be a sleeve with a through opening within or through which the collapsible core is mounted.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: April 21, 2015
    Assignee: Progressive Components International Corporation
    Inventors: Alan Patrick Hickok, David Charles Helenius
  • COLLAPSING CORE PART RETAINER SLEEVE
    Publication number: 20120235325
    Abstract: An injection molding tool having a collapsible core which is movably mounted with respect to a mold plate. The mold plate is movably mounted with respect to a stripper plate that can be used to eject or remove the molded part from the injection molding tool. A retainer is fixedly positioned with respect to the mold plate so that it contacts at least a portion of a molded part when in a mold position. The retainer can be a sleeve with a through opening within or through which the collapsible core is mounted.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 20, 2012
    Applicant: PROGRESSIVE COMPONENTS INTERNATIONAL CORPORATION
    Inventors: ALAN PATRICK HICKOK, DAVID CHARLES HELENIUS