Patents Assigned to Stratasys, Inc.
  • Magnetically throttled liquefier assembly
    Patent number: 10888908
    Abstract: A magnetically throttled liquefier assembly for use in an additive manufacturing system and configured to heat a metal-based alloy to an extrudable state includes an array of magnets to generate a magnetic field in order to induce a viscosity in the heated metal-based alloy and to control the flow rate of the heated metal-based alloy through the liquefier for extrusion and the building of a three-dimensional object with the metal-based alloy.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: January 12, 2021
    Assignee: Stratasys, Inc.
    Inventors: J. Samuel Batchelder, Robert L. Zinniel
  • Method of printing parts in a layerwise manner with one or more internal woven panels under tension
    Patent number: 10889044
    Abstract: A method of producing a part printed in a layer-wise manner includes providing a pre-fabricated starter piece with a first course of loops and printing a layer of a part by extruding one or more flowable thermoplastic materials about the existing course of loops such that an upper surface of the layer is at a selected height on the existing course of loops. The method includes knitting a next course of loops to the existing course of loops to form a portion of an internal woven reinforcement network, and printing a next layer of the part by extruding one or more flowable thermoplastic materials about the next course of loops such that an upper surface of the next layer is at a selected height on the next course of loops, wherein the next course of loops extends above the structure being printed and may function as an existing course of loops for subsequent knitting steps.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: January 12, 2021
    Assignee: Stratasys, Inc.
    Inventors: J. Samuel Batchelder, S. Scott Crump
  • Semi-crystalline build materials
    Patent number: 10781311
    Abstract: A polymeric material includes a semi-crystalline polymer and a secondary material wherein when the secondary material is combined with the semi-crystalline polymer to form a blend having at least a 3° C. reduction in a hot crystallization temperature relative to the neat semi-crystalline polymer.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: September 22, 2020
    Assignee: Stratasys, Inc.
    Inventors: Luke M. B. Rodgers, Vittorio L. Jaker
  • Multi-user access to fabrication resources
    Patent number: 10696038
    Abstract: An interactive platform supports multi-user participation in a shared virtual workspace to prepare and schedule virtual print trays for printing on a three-dimensional (3D) printer or other fabrication resource. Computerized models may be automatically positioned within the print tray, manually positioned within the print tray, or some combination of these. After objects are placed in the virtual workspace users may be given identity-based control of the print tray including, e.g., identity-specific capabilities for viewing, modifying or removing objects within the print tray. This permits improved control over aspects of interest to particular users including, e.g., security, object orientation, priority, fabrication speed, fabrication cost, and so forth within a shared fabrication environment.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: June 30, 2020
    Assignee: Stratasys, Inc.
    Inventors: Grant Thomas-Lepore, Blake Zachary Courter, Roger Rudolf S. Maranan
  • Method of forming a non-cylindrical filament for use in extrusion-based digital manufacturing systems
    Patent number: 10272665
    Abstract: A consumable material for use in an extrusion-based digital manufacturing system, the consumable material comprising a length and a cross-sectional profile of at least a portion of the length that is axially asymmetric. The cross-sectional profile is configured to provide a response time with a non-cylindrical liquefier of the extrusion-based digital manufacturing system that is faster than a response time achievable with a cylindrical filament in a cylindrical liquefier for a same thermally limited, maximum volumetric flow rate.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: April 30, 2019
    Assignee: Stratasys, Inc.
    Inventors: J. Samuel Batchelder, William J. Swanson, S. Scott Crump
  • Ceramic support structure
    Patent number: 10272592
    Abstract: A pre-ceramic support structure for additive manufacturing, that upon thermal processing, is soluble in various solvents.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: April 30, 2019
    Assignee: Stratasys, Inc.
    Inventors: Benjamin A. Demuth, Adam R. Pawloski
  • Heated air system for 3D printer
    Patent number: 10265941
    Abstract: An apparatus and a method using the apparatus provides heated air in an additive manufacturing process for building a three-dimensional part. The method comprises providing a stream of flowable part material at an initial build level, the initial build level being positioned in and defining a horizontal plane wherein the stream of flowable material is being initially disposed on previously deposited part material. Heated air is provided at a selected temperature corresponding to the temperature of the stream of flowable part material such that the stream of flowable part material deposits on previously deposited part material in an adhering fashion thereby forming the three-dimensional part wherein the heated air is provided in the horizontal plane of the initial build level.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: April 23, 2019
    Assignee: Stratasys, Inc.
    Inventors: Peter D. Schuller, Jordan Paul Nadeau, Joel Ordell Ostby, Shawn Michael Koop
  • Method for building and using three-dimensional objects containing embedded identification-tag inserts
    Patent number: 10226916
    Abstract: A method for building a three-dimensional object containing an identification-tag insert, the method comprising performing a build operation to form layers of the three-dimensional object using a layer-based additive technique, placing the identification-tag insert on at least a portion of the layers during the build operation, and reading information from the identification-tag insert.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: March 12, 2019
    Assignee: Stratasys, Inc.
    Inventors: David M. Kozlak, Steven A. Chillscyzn, J. Samuel Batchelder
  • Additive manufacturing system and process with material flow feedback control
    Patent number: 10201931
    Abstract: A liquefier assembly for use in an additive manufacturing system, which includes a rigid member having a gap, a liquefier tube operably disposed in the gap, one or more heater assemblies disposed in the gap in contact with the liquefier tube, and configured to heat the liquefier tube in a zone-by-zone manner, preferably one or more thermal resistors disposed in the gap between the rigid member and the heater assemblies, and preferably one or more sensors configured to operably measure pressure within the liquefier tube. The one or more heater assemblies may be operated to provide dynamic heat flow control.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: February 12, 2019
    Assignee: Stratasys, Inc.
    Inventors: J. Samuel Batchelder, William J. Swanson, Kevin C. Johnson
  • Method for printing three-dimensional parts with crystallization kinetics control
    Patent number: 10189210
    Abstract: A method for printing a three-dimensional part with an additive manufacturing system, which includes providing a part material that compositionally has one or more semi-crystalline polymers and one or more secondary materials that are configured to retard crystallization of the one or more semi-crystalline polymers, where the one or more secondary materials are substantially miscible with the one or more semi-crystalline polymers. The method also includes melting the part material in the additive manufacturing system, forming at least a portion of a layer of the three-dimensional part from the melted part material in a build environment, and maintaining the build environment at an annealing temperature that is between a glass transition temperature of the part material and a cold crystallization temperature of the part material.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: January 29, 2019
    Assignee: Stratasys, Inc.
    Inventors: Luke M. B. Rodgers, Vittorio L. Jaker
  • Semi-crystalline build materials
    Patent number: 10144828
    Abstract: A polymeric material includes a semi-crystalline polymer and a secondary material wherein when the secondary material is combined with the semi-crystalline polymer to form a blend having at least a 3° C. reduction in a hot crystallization temperature relative to the neat semi-crystalline polymer.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: December 4, 2018
    Assignee: Stratasys, Inc.
    Inventors: Luke M. B. Rodgers, Vittorio L. Jaker
  • Liquefier assembly with multiple-zone plate heater assembly
    Patent number: 10131131
    Abstract: A liquefier assembly for use in an additive manufacturing system, which includes a rigid member having a gap, a liquefier tube operably disposed in the gap, one or more heater assemblies disposed in the gap in contact with the liquefier tube, and configured to heat the liquefier tube in a zone-by-zone manner, preferably one or more thermal resistors disposed in the gap between the rigid member and the heater assemblies, and preferably one or more sensors configured to operably measure pressure within the liquefier tube. The one or more heater assemblies may be operated to provide dynamic heat flow control.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: November 20, 2018
    Assignee: Stratasys, Inc.
    Inventors: J. Samuel Batchelder, William J. Swanson, Kevin C. Johnson
  • Liquefier assembly for additive manufacturing systems, and methods of use thereof
    Patent number: 10124539
    Abstract: A liquefier assembly for use in an additive manufacturing system, which includes a rigid member having a gap, a liquefier tube operably disposed in the gap, one or more heater assemblies disposed in the gap in contact with the liquefier tube, and configured to heat the liquefier tube in a zone-by-zone manner, preferably one or more thermal resistors disposed in the gap between the rigid member and the heater assemblies, and preferably one or more sensors configured to operably measure pressure within the liquefier tube. The one or more heater assemblies may be operated to provide dynamic heat flow control.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: November 13, 2018
    Assignee: Stratasys, Inc.
    Inventors: J. Samuel Batchelder, William J. Swanson, Kevin C. Johnson
  • Three-dimensional parts having interconnected Hollow patterns, method of manufacturing and method of producing composite part
    Patent number: 10093039
    Abstract: A three-dimensional part is printed using an additive manufacturing technique. The three-dimensional part includes an outer wall having an outer surface defining a shape of a part and in interior surface defining an interior cavity. The part includes a plurality of first sections having a plurality of printed layers, each printed layer of the first section having a plurality of wall segments that form triangle shaped cells wherein each of the plurality of first sections are attached to the interior surface of the outer wall.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: October 9, 2018
    Assignee: Stratasys, Inc.
    Inventors: Subramaniam Jayanti, Erik K. Heide, Donald J. Holzwarth, Thomas James Studanski, Alissa Ann Wild, Kevin C. Johnson
  • Self-supporting internal passageways for powder metal additive manufacturing
    Patent number: 10089416
    Abstract: An additive manufacturing process for building a three-dimensional part, which includes applying a layer of one or more powder-based metals onto or over a substrate, selectively melting and/or sintering the powder-based metals to produce a layer of the three-dimensional part, and repeating these steps such that the built three-dimensional part includes one or more self-supporting internal passageways, and which preferably precludes the need for internal support structures for the internal passageways.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: October 2, 2018
    Assignee: Stratasys, Inc.
    Inventors: William Cody DuBose, Frederick Carl Claus, Andrew Carter, Bryan Joshua Lee Bedal
  • Ceramic support structure
    Patent number: 10059031
    Abstract: A pre-ceramic support structure for additive manufacturing, that upon thermal processing, is soluble in various solvents.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: August 28, 2018
    Assignee: Stratasys, Inc.
    Inventors: Benjamin A. Demuth, Adam R. Pawloski
  • Break-away support material for additive manufacturing
    Patent number: 10059053
    Abstract: A support material for use in an additive manufacturing system to print a support structure for a three-dimensional part. The support material includes a base resin that is substantially miscible with a part material used to print the three-dimensional part, and has a glass transition temperature within about 10° C. of a glass transition temperature of the part material. The support material also includes a dispersed resin that is substantially immiscible with the base resin, where the base resin and the dispersed resin are each thermally stable for use in the additive manufacturing system in coordination with the part material.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: August 28, 2018
    Assignee: Stratasys, Inc.
    Inventors: Vittorio L. Jaker, Luke M. B. Rodgers
  • Pet chew
    Patent number: D835383
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: December 11, 2018
    Assignee: Stratasys, Inc.
    Inventor: Troy Petersen
  • Print head
    Patent number: D849071
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: May 21, 2019
    Assignee: Stratasys, Inc.
    Inventor: Shawn Michael Koop
  • 3D printer
    Patent number: D903730
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 1, 2020
    Assignee: Stratasys, Inc.
    Inventor: Brett Johnson