Patents by Inventor Michael R. Greenhalgh

Michael R. Greenhalgh 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).

  • Method of making a solid three-dimensional article from a liquid medium
    Patent number: 5885511
    Abstract: A solid three-dimensional article is formed from a liquid medium by initially coating a layer of the liquid medium on a fixedly mounted apertured support plate. An initial cross-section or profile of the article then is formed by solidifying the liquid medium, or at least a portion thereof, on the support plate. In another embodiment, each layer of the liquid medium is formed by dispensing the entire layer from above the fixed support plate. In a further embodiment, a device is disclosed for dispensing a liquid medium in layers of uniform thickness on the medium surface of a laser modeling machine, for solidification when subjected to prescribed energy. The dispenser comprises an elongated applicator or coating bar of rectangular, essentially solid construction, with a liquid medium reservoir and dispensing passageways located adjacent a dispensing side of the bar. A feed tube and traversing mechanism support rods are secured to an opposite side of the bar.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: March 23, 1999
    Assignee: 3D Systems, Inc.
    Inventors: Timmy B. Heller, Ray M. Hill, Michael R. Greenhalgh, Abdalla F. Saggal
  • Apparatus for making a solid three-dimensional article from a liquid medium
    Patent number: 5667820
    Abstract: A solid three-dimensional article is formed from a liquid medium by initially coating a layer of the liquid medium on a fixedly mounted apertured support plate. An initial cross-section or profile of the article then is formed by solidifying the liquid medium, or at least a portion thereof, on the support plate. In another embodiment, each layer of the liquid medium is formed by dispensing the entire layer from above the fixed support plate. In a further embodiment, a device is disclosed for dispensing a liquid medium in layers of uniform thickness on the medium surface of a laser modeling machine, for solidification when subjected to prescribed energy. The dispenser comprises an elongated applicator or coating bar of rectangular, essentially solid construction, with a liquid medium reservoir and dispensing passageways located adjacent a dispensing side of the bar. A feed tube and traversing mechanism support rods are secured to an opposite side of the bar.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 16, 1997
    Assignee: 3D Systems, Inc.
    Inventors: Timmy B. Heller, Ray M. Hill, Michael R. Greenhalgh, Abdalla F. Saggal
  • Applicator device and method for dispensing a liquid medium in a laser modeling machine
    Patent number: 5358673
    Abstract: A solid three-dimensional article is formed from a liquid medium by initially coating a layer of the liquid medium on a fixedly mounted apertured support plate. An initial cross-section or profile of the article then is formed by solidifying the liquid medium, or at least a portion thereof, on the support plate. In another embodiment, each layer of the liquid medium is formed by dispensing the entire layer from above the fixed support plate. In a further embodiment, a device is disclosed for dispensing a liquid medium in layers of uniform thickness on the medium surface of a laser modeling machine, for solidification when subjected to prescribed energy. The dispenser comprises an elongated applicator or coating bar of rectangular, essentially solid construction, with a liquid medium reservoir and dispensing passageways located adjacent a dispensing side of the bar. A feed tube and traversing mechanism support rods are secured to an opposite side of the bar.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: October 25, 1994
    Assignee: 3D Systems, Inc.
    Inventors: Timmy B. Heller, Ray M. Hill, Michael R. Greenhalgh, Abdalla F. Saggal