Patents Examined by Lawrence D Hohenbrink, Jr.
  • Patent number: 11358339
    Abstract: Examples of a 3D printing apparatus arranged to perform a print operation using build material, and methods of operating such a 3D printing apparatus, are described. In one case, a 3D printer is arranged to perform a print operation using build material whilst a build material temperature sensed by the printer is below a threshold temperature of the build material. The printer is arranged to obtain a threshold temperature indicator in advance of a respective print operation.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 14, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Soriano Fosas, Juan Manuel Zamorano, Vicente Granados Asensio
  • Patent number: 11351730
    Abstract: The invention relates to a stereolithography device having a replaceable bottle to receive printing material, which bottle may be stored in or on a bottle holder and from which printing material may be withdrawn into the stereolithography device by means of a device-sided holder. A filling level sensor is attached to the bottle holder by which a filling level of the printing material in the bottle can be detected. A mini memory device is associated to the bottle where the stereolithography device stores information regarding the printing material in the bottle, in particular the filling level thereof.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: June 7, 2022
    Assignee: Ivoclar Vivadent AG
    Inventors: Zeno John, Lorenz Josef Bonderer
  • Patent number: 11351728
    Abstract: Modular additive manufacturing systems, related methods for simultaneously building three-dimensional parts in successively bonded layers, and related computer readable storage medium. A plurality of build assemblies is laid out along at least one direction of a manufacturing path defining a loop, and at least one build assembly is functioning to build a three-dimensional part from build material according to build instructions. A guidable module is guided via a guiding assembly along the manufacturing path to repeatedly perform at least one step necessary to build the three-dimensional part on each functioning build assembly.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: June 7, 2022
    Assignee: 9328-8082 QUÉBEC INC.
    Inventor: Samuel Côté
  • Patent number: 11351722
    Abstract: The present invention relates to a stereolithography device (100) comprising a light source (101) for emitting light to cure a light-curing material (121); a sensor (103) for determining an actual value of the light intensity of the emitted light; and a control unit (105) for adapting the electric current through the light source (101) until the actual value of the light intensity reaches a specified desired value.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: June 7, 2022
    Assignee: Ivoclar Vivadent AG
    Inventors: Markus Wettstein, Stefan Geissbuehler
  • Patent number: 11338523
    Abstract: An additive manufacturing system has a controller configured to modify numerical control programming instructions to form interlocking structures that improve object structural integrity in the Z-direction. The interlocking structures are produced by forming one layer with swaths that are separated by gaps and another layer that is formed over the gaps to fill the gaps and lay over the swaths forming the gaps.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: May 24, 2022
    Assignee: Xerox Corporation
    Inventors: David A. Mantell, Christopher G. Lynn, Jason O'Neil, Priyaanka D. Guggilapu, Peter J. Nystrom
  • Patent number: 11338510
    Abstract: A three-dimensional (3D) printing device includes a first cylinder. The first cylinder may include a first plurality of holes defined therein. The 3D printing device may include a second cylinder interior and coaxial to the first cylinder that includes a second plurality of holes open to an interior of the first cylinder. The 3D printing device may also include a third cylinder interior to the first cylinder and exterior to the second cylinder, the third cylinder including a longitudinal cutout open to the first cylinder. The 3D printing device may include a supply tube open to the second cylinder, the supply tube to provide an amount of build material to an interior portion of the second cylinder.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: May 24, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Krzysztof Nauka, Thomas Anthony, Kristopher J. Erickson
  • Patent number: 11338519
    Abstract: Devices, systems, and methods for monitoring a powder layer in additive manufacturing are disclosed. A method includes receiving leading and trailing image data from an image signal processor that is optically coupled to a plurality of leading and trailing optical fibers arranged on a moving powder distributor, the leading and trailing image data corresponding to images of the powder layer, selecting at least one point on the powder bed that is located within a leading region of interest, determining first characteristics of the point, when the point is located within a trailing region of interest due to movement of the moving powder distributor, determining second characteristics of the point, and comparing the first characteristics to the second characteristics to monitor the powder layer distributed by the moving powder distributor.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 24, 2022
    Assignee: ARCAM AB
    Inventors: Björn Löfving, Kristofer Karlsson
  • Patent number: 11325300
    Abstract: A shaping apparatus includes a stand that includes a shaping surface on which a product is shaped; a feeder that feeds a linear material obtained by impregnating continuous fiber with resin; a pressing portion that presses the material fed by the feeder against the stand; and an angle setting portion that sets an angle formed between the material fed from the feeder to the pressing portion and the shaping surface to be an acute angle.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: May 10, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventor: Nobuhiro Katsuta
  • Patent number: 11325305
    Abstract: A build plate for 3D printers that facilitates separation of the workpiece from the build plate and yet provides lateral anchoring of the unit cell. The build plate comprises (1) a foundation of a material that the unit cell material will not adhere to or will only weakly adhere to, and (2) a plurality of adhesive islands that provide a lateral anchor for the unit cell. An adhesive island is a hole in the foundation of the build plate that is filled with a plug of material to which the unit cell material will strongly adhere. The number, type, location, and size of the adhesive islands is tailored to provide enough lateral stability where needed, but not more.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 10, 2022
    Assignee: Arevo, Inc.
    Inventors: Zachary Aaron August, Christopher Thomas Lee
  • Patent number: 11312053
    Abstract: A method includes providing a collection of particulate material and forming a first article therefrom. Forming the first article includes forming an outer shell with an outer surface that defines an outer periphery of the first article; forming a relief area of the first article that supports the outer shell, including forming a relief void in the relief area; and collecting a collection of the particulate material within the outer shell during formation of the first article. Moreover, the method includes encasing the first article with an outer member. The outer member defines an internal cavity with an internal surface that corresponds to the outer surface of the outer shell. The method further includes heating, which deforms the first article selectively at the relief void.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: April 26, 2022
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Scott Flower, Tho X. Bui, Christy Mihealsick, Mark McGinnis
  • Patent number: 11312083
    Abstract: An additive manufacturing system is disclosed for use in fabricating a structure. The additive manufacturing system may include a print head, and a support configured to move the print head. The support may include a first link, a second link rotationally connected to the first link at a joint, and an encoder-less motor rigidly mounted to the first link and configured to drive rotation of the second link relative to the first link. The support may also include a sole encoder associated with the joint and configured to generate a signal indicative of an angular position of the first link relative to the second link. The additive manufacturing system may further include a controller in communication with the sole encoder and the encoder-less motor. The controller may be configured to selectively trim operation of the encoder-less motor based only on the signal.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: April 26, 2022
    Assignee: Continuous Composites Inc.
    Inventor: Nathan Andrew Stranberg
  • Patent number: 11305349
    Abstract: A method and an apparatus for forming a particle layer are provided. The layering method includes injecting particles in an injection zone defined at a gas-liquid interface between a carrier liquid and an ambient gas, and controlling a flow of the carrier liquid along the gas-liquid interface to carry the particles downstream along a particle flow path from the injection zone to a layer formation zone. The method also includes accumulating the particles in the layer formation zone to gradually form the particle layer on the gas-liquid interface, and withdrawing the particle layer from the layer formation zone. The particle layer formed by the layering method and apparatus can be used to fabricate a three-dimensional object by additive manufacturing.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: April 19, 2022
    Assignee: NANOGRANDE
    Inventor: Juan Schneider
  • Patent number: 11298871
    Abstract: The present invention is a soluble material for three-dimensional modeling that is used as a material of a support material for supporting a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system and that contains a thermoplastic resin having a hydrophilic group and an organic salt compound represented by a general formula (I) below: (R1—SO3?)nXn+ (I). According to the present invention, it is possible to provide a soluble material for three-dimensional modeling that is used for a support material and that is capable of suppressing the degradation of the modeling accuracy of a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system, and has a high rate of dissolution to neutral water to be removable speedily from a precursor of the three-dimensional object without use of a strong alkaline aqueous solution.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: April 12, 2022
    Assignee: KAO CORPORATION
    Inventors: Jouji Hirai, Tadanori Yoshimura, Tomoya Tsuboi, Hiroki Sawada
  • Patent number: 11298885
    Abstract: A method of manufacturing a three-dimensional article includes (1) receiving a data file, (2) analyzing the data file, and (3) defining a support structure. The data file defines a hollow three-dimensional article to be formed from a build material. Analyzing the data file includes identifying an opening that converges to an apex along the sequence of layers. The opening is at least partly defined by an inside edge of the three-dimensional article. The support structure is attached to the edge and closes the opening. The support structure includes a structural sheet portion and an interface web portion. The structure sheet portion defines a majority of an area of the support structure except for a boundary contour between the structural sheet portion and the inside edge. The interface web portion closes the boundary contour and defines a weakness contour for removing the structural portion from the three-dimensional article.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: April 12, 2022
    Assignee: 3D Systems, Inc.
    Inventor: Colin Leonard Blain
  • Patent number: 11286405
    Abstract: A method of making an adhesive article is described comprising melt extruding a core film layer comprising a composition comprising at least 50% of a polylactic acid polymer. The method further comprises melt extruding an adhesive layer on a major surface of the core film layer such that regions of interdiffusion are present between the core film layer and adhesive layer. The adhesive layer may comprise C1-C10 (meth)acrylic acid or ester thereof, vinyl acetate, ethylene vinyl acetate, hydrolysed polyvinyl alcohol and combinations thereof. The adhesive layer may also be a pressure sensitive adhesive. The method further comprises melt extruding a release film layer on an opposing major surface of the core film layer. The layers are sequentially extruded or co-extruded and can be uniaxially or biaxially oriented.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: March 29, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: William W. Merrill, Jeffrey P. Kalish, Jacob D. Young, Ramesh C. Kumar, Sonja S. Mackey, Kanta Kumar, Ignatius A. Kadoma, Michael D. Crandall, Adam R. Wohl
  • Patent number: 11279076
    Abstract: A thermoformable sheet transfer system is provided having at least one frame, and upstream conveyor, a sheet cutter, and a downstream sheet manipulator. The upstream conveyor is configured to deliver a series of shots of formed articles in a thermoformed sheet from an exit end of an article forming station. The sheet cutter is carried by the at least one frame provided proximate the conveyor downstream of the article forming station and is configured to cut a leading edge of the formed articles and sheet sufficiently formed to index within dies of an article trim press. The downstream sheet manipulator is carried by the at least one frame and is configured to transport the leading edge and the sufficiently formed articles and sheet for delivery in sequential shots from downstream an article forming station to upstream an article trim station. A method is also provided.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: March 22, 2022
    Assignee: Irwin Research and Development, Inc.
    Inventor: Dale L. Vantrease
  • Patent number: 11254050
    Abstract: The present disclosure provides a 3D printing bottom plate system, including a printing bottom plate and a storage unit for base plates, the printing bottom plate is movable in a direction towards or away from the storage unit for base plates; in the process of the printing bottom plate moving towards the storage unit for base plates, the lowermost one of base plates stored in a stacked manner in the storage unit for base plates slides onto the printing bottom plate; and in the process of the printing bottom plate moving away from the storage unit for base plates, the base plate slid onto the printing bottom plate is driven to a preset working position by the printing bottom plate.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: February 22, 2022
    Assignee: BEIJING TIERTIME TECHNOLOGY CO., LTD.
    Inventors: Guolin Tang, Ge Guo, Tiezhuo Wang, Mingxi Gao
  • Patent number: 11235515
    Abstract: An additive manufacturing system is provided including a light source configured to emit light, a vessel configured to contain a photopolymer, and a bed having a surface disposed at least partially within the vessel. The surface is movable in a first direction relative to the light source. A membrane is fixed to the vessel and is positioned between the light source and the photopolymer. A movable carrier is disposed between the light source and the membrane. The light source is operably coupled to the movable carrier.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: February 1, 2022
    Assignee: CALT DYNAMICS LIMITED
    Inventors: Ross Lawless, Irene Villafane, Warren Katz, Mark McDonagh
  • Patent number: 11230054
    Abstract: An assembly for performing an additive manufacturing process includes a first material feed for dispensing a first material, a second material feed for dispensing a second material, a material combiner chamber, a first entry channel fluidly connecting the first material feed and the material combiner chamber, and a second entry channel fluidly connecting the second material feed and the material combiner chamber. The assembly further includes a pen tip for dispensing a material in the additive manufacturing process, the material comprising the first material and the second material, a valve having a rod, a first seal between the material combiner and the pen tip, and a first actuator for moving the rod back and forth along a longitudinal axis to open and close the first seal.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: January 25, 2022
    Assignee: nScrypt, Inc.
    Inventor: Kenneth H. Church
  • Patent number: 11225020
    Abstract: A three-dimensional printing system for manufacturing a three-dimensional article includes a transparent substrate, a fluid handling system, a support tray, and a light engine. The transparent substrate slopes downwardly from an upper end toward a lower end. The fluid handling system is configured to input photocurable resin at the upper end and to receive the photocurable resin at the lower end. The fluid handling system thereby forms a gravity-driven flowing sheet of resin over an upper surface of the transparent sheet. The support tray is mounted to a movement mechanism. The support tray has a lower face for supporting the three-dimensional article. The lower face is generally parallel to the upper surface of the transparent substrate. The light engine is positioned below the transparent substrate for selectively illuminating the resin along a build plane that is within the resin and parallel to the upper surface of the transparent substrate.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: January 18, 2022
    Assignee: 3D Systems, Inc.
    Inventor: Eric M. Innes