Patents by Inventor Jim Comb

Jim Comb 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).

  • High performance rapid prototyping system
    Patent number: 5968561
    Abstract: A rapid prototyping system forms three-dimensional objects by depositing layers of material on a substrate. A planer stator containing a grid of stator elements is positioned above and generally parallel to the substrate. An extrusion head is magnetically suspended below the stator and is separated from the stator by an air bearing. An electromagnetic drive receives control signals from moving the extrusion head relative to the grid of stator elements. An umbilical provides mechanical damping to the head to reduce resonance of the head during movements.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: October 19, 1999
    Assignee: Stratasys, Inc.
    Inventors: John Sam Batchelder, Jim Comb, Thomas J. Dahlin
  • Rapid prototyping apparatus
    Patent number: 5939008
    Abstract: A rapid prototyping system makes three-dimensional objects by sequentially depositing multiple layers of solidifying material on a flexible sheet substrate. The substrate is held against the top surface of a vacuum platen during deposition of the layers. When the object is completed, the substrate is released from the vacuum platen. By flexing the substrate, the object is peeled away from the substrate.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: August 17, 1999
    Assignee: Stratasys, Inc.
    Inventors: Jim Comb, Steven E. Dockter, Paul A. Berens