Patents Assigned to Stratasys, Inc.
  • Additive manufacturing technique for printing three-dimensional parts with printed receiving surfaces
    Patent number: 10399281
    Abstract: A method for printing three-dimensional parts with an additive manufacturing system, comprising printing successive layers having increasing cross-sectional areas, and printing layers of a three-dimensional part onto the previously printed layers, where a last layer of the previously printed successive layers has a cross-sectional area that is at least as large as a footprint area of the three-dimensional part.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: September 3, 2019
    Assignee: STRATASYS, INC.
    Inventors: Dominic F. Mannella, William J. Swanson
  • Continuous liquid interface production system with viscosity pump
    Patent number: 10384439
    Abstract: A continuous liquid interface production system includes a source of optical stimulation. The system includes a vessel configured to retain a pool or film of optically sensitive monomer and a substantially optically transparent plate retained by the vessel. The optical stimulation is directed through the plate and into the pool or the film based upon a sliced 3D model of the part. The system includes source of reaction inhibitor wherein the substantially optically transparent plate allows the reaction inhibitor to permeate through the plate and into the pool or the film such that a sufficient amount of reaction inhibitor is within the pool or the film to create a zone proximate the plate that prevents polymerization therein.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: August 20, 2019
    Assignee: STRATASYS, INC.
    Inventors: J. Samuel Batchelder, Jonathan B. Hedlund, Paul E. Hopkins, Steven A. Chillscyzn
  • Additive manufacturing system and method for printing three-dimensional parts using velocimetry
    Patent number: 10369776
    Abstract: An additive manufacturing system that retains a print head for printing a three-dimensional part in a layer-by-layer manner using an additive manufacturing technique, where the retained print head is configured to receive a consumable material, melt the consumable material, and extrude the molten material. The system also includes a velocimetry assembly configured to determine flow rates of the molten material, and a controller assembly configured to manage the extrusion of the molten material from the print head, and to receive signals from the velocimetry assembly relating to the determined flow rates.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 6, 2019
    Assignee: STRATASYS, INC.
    Inventor: J. Samuel Batchelder
  • Consumable filaments having reversible reinforcement for extrusion-based additive manufacturing
    Patent number: 10370510
    Abstract: A consumable assembly for use with an additive manufacturing system to print three-dimensional parts, the consumable assembly including a supply device (e.g., a spool) and a filament supported by the supply device, where the filament has a composition comprising one or more elastomers and one or more reinforcing additives, and a filament geometry configured to be received by a liquefier assembly of the additive manufacturing system. The composition is preferably configured to be thermally and/or chemically modified to reduce its flexural modulus.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: August 6, 2019
    Assignee: STRATASYS, INC.
    Inventors: Jeffrey Jacob Cernohous, Adam R. Pawloski, Benjamin A. Demuth
  • 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
  • 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
  • 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
  • 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
  • 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
  • Surface angle model evaluation process for additive manufacturing
    Patent number: 10046522
    Abstract: A method for printing a three-dimensional part in an additive manufacturing process, which includes calculating surface plane angles relative to one or more of the coordinate axes as a function of surface area of the surface geometry, calculating a build score for each coordinate axis as a function of the calculated surface plane angles, and selecting an orientation for the digital model in the coordinate system based at least in part on the calculated build scores. The build scores preferably predict which part orientations are likely to provide good surface quality for the printed three-dimensional part.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: August 14, 2018
    Assignee: Stratasys, Inc.
    Inventors: Jacob David Lynch August, William J. Swanson, Kevin Johnson
  • 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