Patents by Inventor Joseph J. Bolt

Joseph J. Bolt 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).

  • Publication number: 20200147884
    Abstract: The present invention relates to powder-layer three-dimensional printers (2) having a discrete supply hopper (340) and a recoater (20). The discrete supply hopper (340) is configured to transfer a build powder to the recoater (20) in a manner that enhances the uniformity of build powder layers that are dispensed from the recoater (20). In some embodiments, at least one of the discrete supply hopper and the powder hopper of the recoater is adapted to selectively contact the other, seal against the other, and/or have one partially inserted inside the other so as to diminish or prevent powder pluming during the transfer of build powder from the discrete supply hopper to the recoater.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 14, 2020
    Inventors: Jake Flick, Michael John McCoy, Joseph J. Bolt, Alec Hydock, Travis Maxwell Inks, Anthony S Dugan, Thomas Lizzi
  • Publication number: 20200001530
    Abstract: Powder layer smoothing devices (34) adapted for use with powder-layer three-dimensional printers (10) are described. The smoothing devices (34) include a counter rotating roller (36, 50, 60) having a complex powder engaging face (38) that may include a series or plurality of flutes (54) or may include knurling (64) extending along at least a portion of the counter rotating roller (36, 50, 60) along its rotational axis (56, 66). The smoothing device (34) may also include a vertically adjustable finishing roller (35) to follow the counter rotating roller (36, 50, 60) across the build box (12) of the powder-layer three-dimensional printer (10).
    Type: Application
    Filed: September 11, 2019
    Publication date: January 2, 2020
    Inventors: Adam W. Stroud, Rick D. Lucas, Michael John McCoy, Anthony S. Dugan, Joseph J. Bolt
  • Patent number: 10449718
    Abstract: A powder layer smoothing devices adapted for use with powder-layer three-dimensional printers are described. The smoothing devices include a counter rotating roller having a complex powder engaging face that may include a series or plurality of flutes or may include knurling extending along at least a portion of the roller along the rotational axis. The smoothing device may also include a vertically adjustable finishing roller to follow the counter rotating roller across the build box of the powder-layer three-dimensional printer.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: October 22, 2019
    Assignee: The ExOne Company
    Inventors: Adam W. Stroud, Rick D. Lucas, Michael John McCoy, Anthony S. Dugan, Joseph J. Bolt
  • Patent number: 9486962
    Abstract: Powder-layer three-dimensional printer recoaters, which are adapted for use with fine powders, are disclosed. The recoaters comprise a controllably vibrated traveling powder dispenser having a hopper section adapted to contain the build powder, an opening through which the powder can be controllably discharged laterally into a chamber which is located beside the opening and which has a mesh covering at least a portion of its bottom. The recoaters also comprise a vibrator that is operably connected to the traveling powder dispenser and is adapted to selectively cause the powder to flow from the hopper through the opening and be discharged through the mesh. In some embodiments, the recoaters also comprise a smoothing device which is adapted to smoothen the powder dispensed through the mesh. In some embodiments the smoothing device is adapted to compact the density of the dispensed powder level a selectable amount. Also disclosed are powder-layer three-dimensional printers having such recoaters.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 8, 2016
    Assignee: The ExOne Company
    Inventors: Anthony S. Dugan, Joseph J. Bolt, Andrew P. Klein