Patents Assigned to Stratasys Ltd.
  • PREPARATION OF BUILDING MATERIAL FOR SOLID FREEFORM FABRICATION
    Publication number: 20210339454
    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: July 19, 2021
    Publication date: November 4, 2021
    Applicant: Stratasys Ltd.
    Inventor: Eduardo NAPADENSKY
  • Solid freeform fabrication using a plurality of modeling materials
    Patent number: 11161308
    Abstract: A system and methods for solid freeform fabrication of an object is disclosed. The system comprises a solid freeform fabrication apparatus having a plurality of dispensing heads, a building material supply apparatus configured to supply a plurality of building materials to the fabrication apparatus, and a control unit configured for controlling the fabrication apparatus and the supply apparatus based on an operation mode selected from a plurality of predetermined operation modes.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: November 2, 2021
    Assignee: Stratasys Ltd.
    Inventors: Moshe Levi, Guy Menchik, Eduardo Napadensky
  • COLORING OF THREE-DIMENSIONAL PRINTED OBJECTS
    Publication number: 20210331459
    Abstract: A method of printing a three-dimensional (3D) color object, layer-by-layer, comprises: obtaining a 3D CAD specification defining a 3D geometry and a surface color distribution for the color object to be printed, defining regions on a surface of the color object; defining colors for each region based on the CAD specification; determining, using the 3D geometry of the specification, conditions applying at respective regions that are liable to cause color variation, such that using the colors as defined at the respective regions may give rise to a coloration error; selecting color corrections defined for respective determined conditions; correcting the defined colors; and printing the 3D color object with the color corrections.
    Type: Application
    Filed: July 8, 2021
    Publication date: October 28, 2021
    Applicant: Stratasys Ltd.
    Inventors: Daniel DIKOVSKY, Stanislav SHTILERMAN, Yoav BRESSLER
  • SYSTEM FOR 3D PRINTING
    Publication number: 20210323218
    Abstract: An additive manufacturing (AM) system includes a carriage that deposits material in a defined pattern and a building platform that receives material deposited from the carriage. The carriage includes a pre-heating assembly with a plurality of pre-heating chambers and a printing block with a plurality of slots for receiving a plurality of printing heads. The carriage is equipped with more pre-heating chambers than head slots.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 21, 2021
    Applicant: Stratasys Ltd.
    Inventors: Gregory BRUSILOVSKI, Uri GRACH, Boaz Max PEREK
  • THREE-DIMENSIONAL INKJET PRINTING OF A THERMALLY STABLE OBJECT
    Publication number: 20210308938
    Abstract: A formulation system usable in additive manufacturing of a three-dimensional object that comprises, in at least a portion thereof, a cyanate ester-containing polymeric network, and additive manufacturing processes employing the formulation system are provided. Also provided are objects obtainable by the additive manufacturing and kits containing the formulation system. The formulation system includes a first modeling material formulation which includes a first curable material which is a thermally-curable cyanate ester and a second modeling material formulation which comprises an activating agent for promoting polymerization of the cyanate ester and is devoid of the first curable material, and further includes a second curable material which is different from the first curable material, and optionally an agent for promoting hardening of the second curable material.
    Type: Application
    Filed: September 27, 2019
    Publication date: October 7, 2021
    Applicant: Stratasys Ltd.
    Inventor: Lev KUNO
  • METHOD AND SYSTEM FOR ADDITIVE MANUFACTURING USING CLOSED-LOOP TEMPERATURE CONTROL
    Publication number: 20210308951
    Abstract: A system for additive manufacturing comprises a dispensing head for dispensing building materials on a working surface, a hardening system for hardening the building materials, a cooling system for evacuating heat away from the building materials, and a computerized controller. A thermal sensing system is mounted above the working surface in a manner that allows relative motion between the sensing system and the working surface, and is configured to generate sensing signals responsively to thermal energy sensed thereby. The controller controls the dispensing head to dispense the building materials in layers, the sensing system to generate the sensing signals only when the sensing system is above the building materials once hardened, and the heat evacuation rate of the cooling system responsively to the sensing signals.
    Type: Application
    Filed: September 27, 2019
    Publication date: October 7, 2021
    Applicant: Stratasys Ltd.
    Inventors: Amit FEFFER, Gil SHELEF, Haim ROTFELD, David PRIZANT
  • METHOD AND APPARATUS FOR ADDITIVE MANUFACTURING WITH POWDER MATERIAL
    Publication number: 20210291273
    Abstract: A system for building a three dimensional green compact comprising a printing station configured to print a mask pattern on a building surface, wherein the mask pattern is formed of solidifiable material; a powder delivery station configured to apply a layer of powder material on the mask pattern; a die compaction station for compacting the layer formed by the powder material and the mask pattern; and a stage configured to repeatedly advance a building tray to each of the printing station, the powder delivery station and the die compaction station to build a plurality of layers that together form the three dimensional green compact.
    Type: Application
    Filed: June 7, 2021
    Publication date: September 23, 2021
    Applicant: Stratasys Ltd.
    Inventors: Yehoshua SHEINMAN, Shai HIRSCH, Almog SHAHAR, Uri GRACH, Kirill TANHILEVICH
  • METHOD AND SYSTEM FOR FABRICATING CROSS-LAYER PATTERN
    Publication number: 20210283828
    Abstract: A method of fabricating a cross-layer pattern in a layered object is disclosed. The method is executed by an additive manufacturing system and comprises: dispensing a patterning material onto a receiving medium to form a first pattern element; dispensing a first layer of modeling material onto the first pattern element while forming a first open cavity exposing at least a portion of the first pattern element beneath the first layer; and dispensing patterning material onto the exposed portion of the first pattern element and the first layer to form a second pattern element contacting the first pattern element.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Applicant: Stratasys Ltd.
    Inventors: Daniel DIKOVSKY, Ira YUDOVIN-FARBER, Efraim DVASH
  • System for 3D printing
    Patent number: 11117310
    Abstract: An additive manufacturing (AM) system includes a carriage that deposits material in a defined pattern and a building platform that receives material deposited from the carriage. The carriage includes a pre-heating assembly with a plurality of pre-heating chambers and a printing block with a plurality of slots for receiving a plurality of printing heads. The carriage is equipped with more pre-heating chambers than head slots.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 14, 2021
    Assignee: Stratasys Ltd.
    Inventors: Gregory Brusilovski, Uri Grach, Boaz Max Perek
  • Three-dimensional inkjet printing using ring-opening metathesis polymerization
    Patent number: 11118004
    Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) for fabricating the object, in combination with acid-activatable pre-catalyst and an acid generator activator. Kits containing modeling material formulations usable in the methods are also provided.
    Type: Grant
    Filed: February 5, 2017
    Date of Patent: September 14, 2021
    Assignee: Stratasys Ltd.
    Inventors: Yuval Vidavsky, Ira Yudovin-Farber, Asher Razlan, Lev Kuno, Gilles Recher, Renata Drozdzak-Matusiak
  • GPU MATERIAL ASSIGNMENT FOR 3D PRINTING USING 3D DISTANCE FIELDS
    Publication number: 20210279944
    Abstract: A system for generating slice data for additive manufacturing, comprises a graphics processing unit (GPU) that receives a digital model of an object in a three-dimensional build space defined over a plurality of slices, computes a three-dimensional signed distance field over voxels in the build space, assigns a building material to each voxel based on a respective distance field value, and generates slice data output pertaining to the building material assignments for each slice. The slice data output can be used for printing the object in layers corresponding to the slices. The distance field comprises one or more vector having a vertical component with respect to the slices.
    Type: Application
    Filed: May 25, 2021
    Publication date: September 9, 2021
    Applicant: Stratasys Ltd.
    Inventors: Blake Zachary COURTER, Stephen DEMAI
  • THREE-DIMENSIONAL INKJET PRINTING USING RING-OPENING METATHESIS POLYMERIZATION
    Publication number: 20210269663
    Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) in combination with toughening agents for fabricating the object. Systems suitable for performing these methods and kits containing modeling material formulations usable in the methods are also provided.
    Type: Application
    Filed: April 27, 2021
    Publication date: September 2, 2021
    Applicant: Stratasys Ltd.
    Inventors: Yuval VIDAVSKY, Lev KUNO
  • Rapid prototyping apparatus
    Patent number: 11104074
    Abstract: An apparatus, system and method for printing an object with a rapid prototyping machine (RPM) working in a computer network environment including one or more rapid prototyping RPMs, enables users in different locations to add objects to a virtual construction platform that is being prepared for printing via the computer network. Available space on the virtual construction platform for building the object may be communicated and instructions to add the model to the available space may be communicated via the network.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: August 31, 2021
    Assignee: Stratasys Ltd.
    Inventors: Chaim Kleinhendler, Tatyana Rodin Entin, Stanislav Shtilerman, Igal Zeitun
  • CONSUMPTION OF MATERIAL IN ADDITIVE MANUFACTURE
    Publication number: 20210260828
    Abstract: A method for carrying out additive manufacture while regulating material consumption, comprises making a digital representation of at least part of an object for printing, the representation comprising a plurality of voxels, and then identifying voxels which are flexible in respect of being able to consist of any one of at least two available materials. A balanced material consumption policy is then used to choose between the available materials so as to ensure that as far as possible, different materials are evenly used and wastage is minimized. Finally the object is printed with the selected materials.
    Type: Application
    Filed: May 7, 2021
    Publication date: August 26, 2021
    Applicant: Stratasys Ltd.
    Inventors: Avraham TEKEN, Boris BELOCON
  • Three-dimensional inkjet printing using ring-opening metathesis polymerization
    Patent number: 11097529
    Abstract: Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) for fabricating the object. Systems suitable for performing these methods and kits containing modeling material formulations usable in the methods are also provided.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: August 24, 2021
    Assignee: Stratasys Ltd.
    Inventors: Yuval Vidavsky, Ira Yudovin-Farber
  • WATER-BREAKABLE FORMULATIONS AND ADDITIVE MANUFACTURING PROCESSES EMPLOYING SAME
    Publication number: 20210253766
    Abstract: Curable formulations which form cured materials that are breakable upon immersion in water are disclosed. The cured materials break into a plurality of particles being a few millimeters or less in size. Methods of fabricating three-dimensional objects utilizing the curable formulations are also disclosed, as well as model objects fabricated thereby. The curable formulations include at least a mono-functional curable material and a multi-functional curable material, as described in the specification.
    Type: Application
    Filed: April 28, 2021
    Publication date: August 19, 2021
    Applicant: Stratasys Ltd.
    Inventors: Tal ELY, Mariana POKRASS, Dani PERI, Avraham LEVY, Dana TENNE
  • Method and system for fabricating cross-layer pattern
    Patent number: 11090858
    Abstract: A method of fabricating a cross-layer pattern in a layered object is disclosed. The method is executed by an additive manufacturing system and comprises: dispensing a patterning material onto a receiving medium to form a first pattern element; dispensing a first layer of modeling material onto the first pattern element while forming a first open cavity exposing at least a portion of the first pattern element beneath the first layer; and dispensing patterning material onto the exposed portion of the first pattern element and the first layer to form a second pattern element contacting the first pattern element.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: August 17, 2021
    Assignee: Stratasys Ltd.
    Inventors: Daniel Dikovsky, Ira Yudovin-Farber, Efraim Dvash
  • WASTE DISPOSAL FOR ADDITIVE MANUFACTURE
    Publication number: 20210245440
    Abstract: A waste curing device to cure waste generated by an additive manufacturing system, the waste curing device comprising: a container for receiving the waste; a movable cover positioned above the container; one or more waste nozzles mounted on the moveable cover and configured to deliver waste into the container; a static cover positioned above the container and below the movable cover; one or more curing sources mounted on the static cover and configured to provide curing radiation to cure the waste in the container; wherein the movable cover is configured to move relative to the static cover to provide an open position for the waste nozzles to deliver waste into the container, and subsequently to a closed position, to shield the waste nozzles from curing radiation.
    Type: Application
    Filed: July 8, 2019
    Publication date: August 12, 2021
    Applicant: Stratasys Ltd.
    Inventors: Yaniv SHITRIT, Boris BELOCON, Gal BEGUN
  • Operation of printing nozzles in additive manufacture and apparatus for cleaning printing nozzles
    Patent number: 11084205
    Abstract: A method of providing nozzle calibration parameters for a 3D printer comprises: printing an arc pattern, printing an X-Y align pattern, and printing a head calibration pattern, measuring actual positions of drops, calculating deviations of said measured actual positions from expected positions, and calculating calibration parameters to correct for the deviations. Indicator drops may be used to allow built-in image recognition to find the calibration drops, and a cam system is provided to guide nozzle wipers.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: August 10, 2021
    Assignee: Stratasys Ltd.
    Inventors: Andrew James Carlson, Nathaniel Michael Peterson, Alexander Libinson, Adam Joseph Livingston, Scott Wayne Beaver
  • STRUCTURE SUPPORTING AN OBJECT DURING ADDITIVE MANUFACTURING AND METHOD FOR FORMING
    Publication number: 20210221045
    Abstract: A supporting structure built together with an object in an additive manufacturing (AM) process and configured to support an overhang of the object is described. The supporting structure includes a first array of pillars formed with a first material and reinforced with a second material. Each of the pillars in the first array includes a top. At least a portion of the tops in the first array adjoin and define a surface on which the overhang of the object may be supported. The first material is support material.
    Type: Application
    Filed: June 25, 2019
    Publication date: July 22, 2021
    Applicant: Stratasys Ltd.
    Inventors: Karin DEKEL, Blake Zachary COURTER