Patents Assigned to Stratasys Ltd.
  • Publication number: 20170334131
    Abstract: Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.
    Type: Application
    Filed: August 7, 2017
    Publication date: November 23, 2017
    Applicant: Stratasys Ltd.
    Inventors: Eliahu M. KRITCHMAN, Igal ZEITUN
  • Publication number: 20170282452
    Abstract: A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises sequentially forming a plurality of layers in a configured pattern corresponding to the shape of the object. Each layer is formed by dispensing at least one modeling material to form an uncured layer, and curing the uncured layer by radiation. In various exemplary embodiments of the invention the method comprises, for at least one layer, forming a stack of sacrificial radiation-protective layers to cover an exposed portion of the layer, such that an upper layer of the stack remains exposed during formation of any subsequent layer of the plurality of layers.
    Type: Application
    Filed: June 19, 2017
    Publication date: October 5, 2017
    Applicant: Stratasys Ltd.
    Inventors: Diana RAVICH, Eduardo NAPADENSKY
  • Publication number: 20170259488
    Abstract: A method suitable for solid freeform fabrication is disclosed. The method comprises mixing respective amounts of a plurality of materials such as to provide a building material characterized by at least one attribute, and using the building material for fabricating a three-dimensional object.
    Type: Application
    Filed: May 29, 2017
    Publication date: September 14, 2017
    Applicant: Stratasys Ltd.
    Inventor: Eduardo NAPADENSKY
  • Publication number: 20170246851
    Abstract: A method of producing an object by sequentially printing layers of construction material one on top of the other, the method comprising: providing the construction material at a first lower temperature; flowing the construction material through a heated flow path in a flow structure to heat the construction material and delivering the heated construction material to a heated reservoir in a printing head; and dispensing the heated construction material from the reservoir to build the object layer by layer.
    Type: Application
    Filed: May 17, 2017
    Publication date: August 31, 2017
    Applicant: Stratasys Ltd.
    Inventors: Eliahu M. KRITCHMAN, Stanislav SHTILERMAN
  • Publication number: 20170225391
    Abstract: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.
    Type: Application
    Filed: April 27, 2017
    Publication date: August 10, 2017
    Applicant: Stratasys Ltd.
    Inventors: Eliahu M. KRITCHMAN, David ESHED, Guy MENCHIK
  • Publication number: 20170225390
    Abstract: A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises sequentially forming a plurality of layers each patterned according to the shape of a cross section of the object. In some embodiments, the formation of at least one of the layers comprises performing a raster scan to dispense at least a first building material composition, and a vector scan to dispense at least a second building material composition. The vector scan is optionally along a path selected to form at least one structure selected from the group consisting of (i) an elongated structure, (ii) a boundary structure at least partially surrounding an area filled with the first building material, and (iii) an inter-layer connecting structure.
    Type: Application
    Filed: April 24, 2017
    Publication date: August 10, 2017
    Applicant: Stratasys Ltd.
    Inventor: Eduardo NAPADENSKY
  • Patent number: 9724879
    Abstract: Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: August 8, 2017
    Assignee: Stratasys Ltd.
    Inventors: Eliahu M. Kritchman, Eduardo Napadensky, Moshe Levi
  • Patent number: 9718238
    Abstract: A printing head for a printing system is disclosed. The printing head comprises a plurality of compartments, each having an outlet port for depositing liquid and an inlet port separately connectable to a separate liquid container. At least two compartments are in controllable fluid communication with each other, and the printing head comprises an arrangement of sensors configured for generating signals indicative of (i) a filling state of each compartment, and (ii) a fluid communication state between the at least two compartments.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: August 1, 2017
    Assignee: Stratasys Ltd.
    Inventors: Avraham Teken, Moshe Aknin, Gregory Brusilovski
  • Patent number: 9688021
    Abstract: A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises sequentially forming a plurality of layers in a configured pattern corresponding to the shape of the object. Each layer is formed by dispensing at least one modeling material to form an uncured layer, and curing the uncured layer by radiation. In various exemplary embodiments of the invention the method comprises, for at least one layer, forming a stack of sacrificial radiation-protective layers to cover an exposed portion of the layer, such that an upper layer of the stack remains exposed during formation of any subsequent layer of the plurality of layers.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: June 27, 2017
    Assignee: Stratasys Ltd.
    Inventors: Diana Ravich, Eduardo Napadensky
  • Patent number: 9662838
    Abstract: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: May 30, 2017
    Assignee: Stratasys Ltd.
    Inventors: Eliahu M. Kritchman, David Eshed, Guy Menchik
  • Patent number: 9662834
    Abstract: A method of producing an object by sequentially printing layers of construction material one on top of the other, the method comprising: providing the construction material at a first lower temperature; flowing the construction material through a heated flow path in a flow structure to heat the construction material and delivering the heated construction material to a heated reservoir in a printing head; and dispensing the heated construction material from the reservoir to build the object layer by layer.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: May 30, 2017
    Assignee: Stratasys Ltd.
    Inventor: Stanislav Shtilerman
  • Patent number: 9662839
    Abstract: A method suitable for solid freeform fabrication is disclosed. The method comprises mixing respective amounts of a plurality of materials such as to provide a building material characterized by at least one attribute, and using the building material for fabricating a three-dimensional object.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: May 30, 2017
    Assignee: Stratasys Ltd.
    Inventor: Eduardo Napadensky
  • Patent number: 9649811
    Abstract: A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises sequentially forming a plurality of layers each patterned according to the shape of a cross section of the object. In some embodiments, the formation of at least one of the layers comprises performing a raster scan to dispense at least a first building material composition, and a vector scan to dispense at least a second building material composition. The vector scan is optionally along a path selected to form at least one structure selected from the group consisting of (i) an elongated structure, (ii) a boundary structure at least partially surrounding an area filled with the first building material, and (iii) an inter-layer connecting structure.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: May 16, 2017
    Assignee: Stratasys Ltd.
    Inventor: Eduardo Napadensky
  • Publication number: 20170106602
    Abstract: Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Applicant: Stratasys Ltd.
    Inventors: Eliahu M. KRITCHMAN, Eduardo NAPADENSKY, Moshe LEVI
  • Patent number: 9576079
    Abstract: Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: February 21, 2017
    Assignee: Stratasys Ltd.
    Inventors: Eliahu M. Kritchman, Eduardo Napadensky, Moshe Levi
  • Publication number: 20160342149
    Abstract: A method of three-dimensional fabrication of an object is disclosed. The method comprises: forming a plurality of layers in a configured pattern corresponding to the shape of the three-dimensional object, at least one layer of the plurality of layers being formed at a predetermined and different thickness selected so as to compensate for post-formation shrinkage of the layer along a vertical direction. In various exemplary embodiments of the invention spread of building material of one or more layers is diluted at least locally such as to maintain a predetermined thickness and a predetermined planar resolution for the layer.
    Type: Application
    Filed: August 3, 2016
    Publication date: November 24, 2016
    Applicant: Stratasys Ltd.
    Inventor: Eduardo NAPADENSKY
  • Patent number: 9417627
    Abstract: A method of three-dimensional fabrication of an object is disclosed. The method comprises: forming a plurality of layers in a configured pattern corresponding to the shape of the three-dimensional object, at least one layer of the plurality of layers being formed at a predetermined and different thickness selected so as to compensate for post-formation shrinkage of the layer along a vertical direction. In various exemplary embodiments of the invention spread of building material of one or more layers is diluted at least locally such as to maintain a predetermined thickness and a predetermined planar resolution for the layer.
    Type: Grant
    Filed: July 13, 2014
    Date of Patent: August 16, 2016
    Assignee: Stratasys Ltd.
    Inventor: Eduardo Napadensky
  • Publication number: 20160107383
    Abstract: A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20.
    Type: Application
    Filed: December 31, 2015
    Publication date: April 21, 2016
    Applicant: Stratasys Ltd.
    Inventors: Daniel DIKOVSKY, Avraham LEVY, Eduardo NAPADENSKY
  • Patent number: 9227365
    Abstract: A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: January 5, 2016
    Assignee: Stratasys Ltd.
    Inventors: Daniel Dikovsky, Avraham Levy, Eduardo Napadensky
  • Publication number: 20150360417
    Abstract: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.
    Type: Application
    Filed: August 25, 2015
    Publication date: December 17, 2015
    Applicant: Stratasys Ltd.
    Inventors: Eliahu M. KRITCHMAN, David ESHED, Guy MENCHIK