Patents by Inventor Marcel D. Plourde

Marcel D. Plourde 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).

  • Ejector rod quick coupler
    Patent number: 5026197
    Abstract: A retainer for supporting an injection molding machine ejector bar. The retainer is mounted to a hydraulic ram and secures an ejector bar in clamped relation relative to an extractor pin assembly secured to a molding die. The retainer includes a relatively large self-aligning cavity wherein an ejector bar end is confined via a transverse mounted jaw having a ridged gripping surface that interconnects with an annular slot formed in the ejector bar.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: June 25, 1991
    Assignee: Scientific Molding Corporation, Ltd.
    Inventors: Michael L. Johnson, Chetan N. Patel, Marcel D. Plourde, Brian J. Wiederin