Assignee: 3D Systems, Inc.

Location: Rock Hill, SC
No. of patents: 47

Number	Title	Issue Date
8185229	Apparatus and methods for handling materials in a 3-D printer A method of controlling the flow of unbound powder in a build chamber. A build surface for receiving the powder is provided, with the build surface including a first plate defining holes and a second plate defining a plurality of openings spaced apart and offset fro...	05/22/2012
8182882	Method of making a 3-D object from photocurable compositions containing reactive polysiloxane particles A method of making a 3-D object from a photocurable composition, including (a) a cationically curable monomer; (b) a radically curable monomer; (c) reactive particles comprising a crosslinked polysiloxane core and a shell of reactive groups on an outer surface of th...	05/22/2012
8167999	Three-dimensional printing material system with improved color, article performance, and ease of use A materials system and methods are provided to enable the formation of articles by three dimensional printing. The materials system includes particulate mixtures having a whitening agent and a solid particulate additive comprising an acid, the latter adapted for mod...	05/01/2012
8167395	Apparatus and methods for servicing 3D printers The invention relates to apparatus and methods for producing three-dimensional objects and auxiliary systems used in conjunction with the aforementioned apparatus and methods. The apparatus and methods involve 3D printing and servicing of the equipment used in the a...	05/01/2012
8157908	Three dimensional printing material system and method using peroxide cure A materials system and methods are provided to enable the formation of articles by Three Dimensional Printing. The materials system includes a transition metal catalyst that facilitates the reaction of an acrylate-containing binder with a particulate material. ...	04/17/2012
8139202	Apparatus and a method for illuminating a light-sensitive medium The invention relates to an illumination unit for point illumination of a medium comprising a plurality of light emitters in the form of light guides, which are arranged to illuminate at least one illumination face via a light valve arrangement, said light valve arr...	03/20/2012
8137609	Apparatus and method for cooling part cake in laser sintering A part cake defining a build produced by laser sintering and the surrounding unfused powder is contained in an enclosure, and the enclosure includes displaceable wall portions for compressing the part cake to support the build against distortion during rapid cooling...	03/20/2012
8119053	Apparatus for three dimensional printing using imaged layers A three-dimensional printer adapted to construct three dimensional objects is disclosed. In an exemplary embodiment, the printer includes a first surface adapted to receive a bulk layer of sinterable powder, a polymer such as nylon powder; a radiant energy source, e...	02/21/2012
8105066	Cartridge for solid imaging apparatus and method A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a buil...	01/31/2012
8097399	Photocurable compositions An optical moulding process is disclosed comprising the sequential steps of: (a)(y) forming a layer of a photocurable composition; and (bXz) irradiating selected areas of the composition in the layer with radiation from a radiation source, thereby curing the composi...	01/17/2012
8048359	Compensation of actinic radiation intensity profiles for three-dimensional modelers There is provided methods and apparatus for compensation of intensity profiles of imagers used in three-dimensional modelers. The intensity profile of the actinic radiation projected from the imager is determined by a variety of techniques, including but not limited...	11/01/2011
8046097	Region-based supports for parts produced by solid freeform fabrication Methods for generating supports (30) for parts (50) produced by solid freeform fabrication (“SFF”) are disclosed. The method includes defining a plurality of layers (L) that make up the part, and for each layer, determining those regions (R) that r...	10/25/2011
8040530	Automatic geometric calibration using laser scanning reflectometry Systems and methods for calibrating a solid-imaging system (10) are disclosed. A calibration plate (110) having a non-scattering surface (140) with a plurality (150) of light-scattering fiducial marks (156) in a periodic array is d...	10/18/2011
8003039	Method for tilting solid image build platform for reducing air entrainment and for build release A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a buil...	08/23/2011
7931460	Material delivery system for use in solid imaging A disposable liquid build material feed cartridge for use in a solid imaging apparatus and a method of dispensing build material for use in such an apparatus with a radiation transparent build material carrier. The disposable liquid build material feed cartridge rec...	04/26/2011
7906061	Bubble-free cross-sections for use in solid imaging A solid imaging apparatus and method employing build material transfer means effective to transfer solidifiable liquid build material from a first side of a radiation transparent build material carrier to a receiving substrate without entrapping air bubbles in layer...	03/15/2011
7887316	Selective laser sintering powder recycle system A method and apparatus for forming three-dimensional objects by laser sintering that includes the use of dense phase pneumatic conveying to internally recycle overflow powder, and to thoroughly blend overflow, recovered and virgin powder to provide a consistent powd...	02/15/2011
7807947	Laser sintering process chamber gas curtain window cleansing in a laser sintering system An inert gas dispenser for mounting to a process equipment functional window is provided to dispense an inert gas in a laminar flow at an effective velocity across the exposed surface to form a curtain of inert gas across the exposed surface to prevent a build-up of...	10/05/2010
7790096	Thermal management system for a removable build chamber for use with a laser sintering system A thermal management system is provided to control the preheating and cool down of a removable build chamber in a laser sintering system. A thermal management station controls preheating of a removable build chamber to heat the chamber to a temperature at or near th...	09/07/2010
7785093	Stereolithographic apparatus An improved stereolithography apparatus for forming three-dimensional objects using multiple chambered resin vats and a quick disconnect mounting system to permit concurrent use of multiple photopolymer build materials and easy change over of resin vats is disclosed...	08/31/2010
7771183	Solid imaging system with removal of excess uncured build material Solid imaging apparatus and methods for use are disclosed that reduce the amount of uncured solid imaging build material remaining on a completed build object following the completion of the solid imaging build process. The amount of uncured build material is reduce...	08/10/2010
7758799	Edge smoothness with low resolution projected images for use in solid imaging A solid imaging apparatus and method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, pres...	07/20/2010
7731887	Method for removing excess uncured build material in solid imaging Solid imaging apparatus and methods for use are disclosed that reduce the amount of uncured solid imaging build material remaining on a completed build object following the completion of the solid imaging build process. The amount of uncured build material is reduce...	06/08/2010
7706910	Imager assembly and method for solid imaging Solid imaging apparatus and methods for use are disclosed that reduce the amount of uncured solid imaging build material remaining on a completed build object following the completion of the solid imaging build process. The amount of uncured build material is reduce...	04/27/2010
7690909	Rapid prototyping and manufacturing system and method A stereolithography apparatus having a resin vat with resupply containers in one-way flow communication and a leveling container in two-way flow communication, an automatic offload cart to remove and replace build support platforms, an elevator assembly for supporti...	04/06/2010
7648664	Clamped quantized feed system for solid freeform fabrication A material feed system for solid freeform fabrication. The build material is delivered in discrete or quantized amounts by a clamp feed system in a non-flowable state to the dispensing device and the material is then changed to a flowable state prior to being dispen...	01/19/2010
7621733	Rapid prototyping and manufacturing system and method A stereolithography apparatus having a resin vat with resupply containers in one-way flow communication and a leveling container in two-way flow communication, an automatic offload cart to remove and replace build support platforms, an elevator assembly for supporti...	11/24/2009
7614866	Solid imaging apparatus and method A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a buil...	11/10/2009
7585450	Rapid prototyping and manufacturing system and method A stereolithography apparatus having a resin vat with resupply containers in one-way flow communication and a leveling container in two-way flow communication, an automatic offload cart to remove and replace build support platforms, an elevator assembly for supporti...	09/08/2009
7569174	Controlled densification of fusible powders in laser sintering The invention relates to a method producing parts using laser sintering wherein a fusible powder is exposed to a plurality of laser scans at controlled energy levels and for time periods to melt and densify the powder and in the substantial absence of particle bondi...	08/04/2009
7521652	Controlled cooling methods and apparatus for laser sintering part-cake The invention is a method for controllably cooling at least a portion of a part-cake from a laser sintering system to minimize cool down time, maximize throughput, and minimize thermal gradients within the part-cake. The method generally comprises forming one or mor...	04/21/2009
7520740	Rapid prototyping and manufacturing system and method A stereolithography apparatus having a resin vat with resupply containers in one-way flow communication and a leveling container in two-way flow communication, an automatic offload cart to remove and replace build support platforms, an elevator assembly for supporti...	04/21/2009
D588701	Cartridge for use in solid imaging	03/17/2009
7467939	Material delivery tension and tracking system for use in solid imaging A solid imaging apparatus and method employing a radiation transparent build material carrier and a build material dispensing system that accurately controls the thickness of the transferred layer of solidifiable liquid build material to the radiation transparent bu...	12/23/2008
7464733	Pneumatic Powder Transport System A method and apparatus for pneumatic powder transfer from a powder supply container to applications such as laser sintering systems. The method and apparatus use both constant and cyclic flows of a pressurized gas to fluidize and convey powders without the need for ...	12/16/2008
7427374	Convection cooling techniques in selective deposition modeling A convection cooling technique for selective deposition modeling utilizing a venturi duct to establish a low-pressure port for drawing a second flow of air into the duct. The second flow of air is drawn across a heat generating component in the selective deposition ...	09/23/2008
D575313	Build platform	08/19/2008
7402273	Flash curing in selective deposition modeling A flash curing system for solid freeform fabrication which generates a plurality of radiation emitting pulses that forms a planar flash. The planar flash initiates curing of a curable material dispensed by a solid freeform fabrication apparatus. The radiation emitti...	07/22/2008
7399796	Phase change support material composition A jettable non-curable support material composition useful for three-dimensional ink jet printing comprising at least one fatty alcohol and at least one abietic rosin ester alcohol, wherein the support material has a melting point between about 50° C. to about 65°...	07/15/2008
7378460	Ultra-violet light curable hot melt composition A UV curable composition useful for three-dimensional inkjet printing comprising (i) at least one UV curable urethane (meth)acrylate resin; (ii) at least one wax; (iii) at least one (meth)acrylate diluent; (iv) at least one photoinitiator; and (v) at least one polym...	05/27/2008

«First «Previous1 2 Next»Last»

PatentStorm

Quotables

PatentStorm News

Assignee: 3D Systems, Inc.