Patents by Inventor Michael J. De Rush

Michael J. De Rush 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).

  • Multiple cylinder extrusion apparatus and method
    Patent number: 4862721
    Abstract: A structure comprised of a plurality of material cylinders, a ram head or heads for extrusion, and a mechanism for transferring the material cylinders into alignment with a ram head. The plural cylinders allow an operator to manually load one cylinder of a pair with extrusion material in preparation for an extrusion phase on that cylinder, while the other cylinder of the pair is being discharged by a suitable ram piston in the extrusion phase. A special de-airing mechanism is provided and a lateral shift system to align the respective cylinder selectively with a power extrusion ram. More than one pair of cylinders can be utilized.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: September 5, 1989
    Assignee: Hydramet American, Inc.
    Inventor: Michael J. De Rush