Patents Assigned to Objet Geometries LTD
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Publication number: 20090176032Abstract: Method and apparatus for polymerizing photoactive materials included in a liquid material by electromagnetic radiation, by dispensing the liquid material layer-wise into a container and irradiating the accumulated layers by a curing radiation, wherein a substantial part of the radiation is well transmitted through the photoactive material.Type: ApplicationFiled: January 7, 2008Publication date: July 9, 2009Applicant: Objet Geometries Ltd.Inventors: Eliahu M. Kritchman, Alexander Libinson, Michael Deriugin
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Publication number: 20090145357Abstract: Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.Type: ApplicationFiled: February 18, 2009Publication date: June 11, 2009Applicant: Objet Geometries Ltd.Inventors: Eliahu M. Kritchman, Igal Zeytoun
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Publication number: 20090148621Abstract: Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.Type: ApplicationFiled: February 18, 2009Publication date: June 11, 2009Applicant: Objet Geometries Ltd.Inventors: Eliahu M. Kritchman, Moshe Levi
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Patent number: 7500846Abstract: Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.Type: GrantFiled: May 2, 2004Date of Patent: March 10, 2009Assignee: Objet Geometries Ltd.Inventors: David Eshed, Moshe Levi, Eliahu M. Kritchman, Hanan Gothait, Igal Zeytoun, Dror Danai
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Patent number: 7479510Abstract: Compositions suitable for support in building a three-dimensional object are described. The compositions may include a non-curable component and a curable component not reactive with the non-curable component. The composition may further include a surface-active agent and a stabilizer, wherein the composition has a first viscosity of about 20-500 cps at ambient temperature, and a viscosity lower than 20 cps at a temperature higher than the ambient temperature. After irradiation, the composition results in a solid, a semi-solid or liquid material.Type: GrantFiled: September 11, 2006Date of Patent: January 20, 2009Assignee: Objet Geometries Ltd.Inventors: Eduardo Napadensky, Avi Levy
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Patent number: 7369915Abstract: A system and method for building three dimensional objects may adjust data used to build the objects to, for example, improve quality or correct for defects. A printer may, for example, accept data representing the object and modify the data according to an adjustment parameter; the printer may build the object according to the parameter. The parameter may be, for example, calculating an adjustment parameter in an X-Y slice plane to compensate for inaccuracies caused by diffusion of materials into one another.Type: GrantFiled: April 2, 2007Date of Patent: May 6, 2008Assignee: Objet Geometries Ltd.Inventors: Eliahu M. Kritchman, Dani Chechik, Tatyana Rodin-Entin, Hanan Gothait
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Patent number: 7368484Abstract: The present invention relates to novel polymeric compositions that exhibit Reverse Thermal Gelation (RTG) properties for use as Support Materials (SM) in the manufacture of three-dimensional objects. These polymers are Temperature Sensitive Polymers that respond with a significant change of properties to a small change in temperature. Temperature Sensitive Polymers exhibit cloud point (CP) or lower critical solution temperature (LCST) in aqueous solutions. Water-soluble Temperature Sensitive Polymers are chosen to give low viscosity liquid at low temperature when dissolved in water and by that to permit easy dispensing at low temperature. Raising the temperature above their gelation temperature (Tgel) will result in solidification of the composition. At its gel position the material has favorable characteristics as a support and building material. The gel layers have the appropriate toughness and dimensional stability to support the model layers during the building process.Type: GrantFiled: October 10, 2006Date of Patent: May 6, 2008Assignee: Objet Geometries Ltd.Inventor: Avraham Levy
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Patent number: 7364686Abstract: A method for printing and supporting a three-dimensional (3-D) object is provided. The method of printing can include dispensing a first interface material for the construction of the three-dimensional object, dispensing a second interface material to form a support structure for supporting the three-dimensional object and dispensing a third interface material which may be used to separate the support structure from the 3-D object Disclosed also a method for producing a 3-D model containing various kinds of inserts.Type: GrantFiled: November 20, 2003Date of Patent: April 29, 2008Assignee: Objet Geometries Ltd.Inventors: Eli Kritchman, Hanan Gothait, Gershon Miller
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Patent number: 7300619Abstract: A pseudo composite material, may include, inter alia, a first phase and a second phase, wherein each phase may include, inter alia, an organic compound, wherein each phase comprising a multiplicity of construction layers, wherein the layers were deposited by ink-jet printing, wherein the pseudo composite material exhibits non-homogeneous three-dimensional structure. A method is disclosed for the preparation of a pseudo composite material. An apparatus is disclosed for printing a pseudo composite material. Furthermore, there is disclosed a method for printing a three-dimensional object using various suitable materials.Type: GrantFiled: December 3, 2003Date of Patent: November 27, 2007Assignee: Objet Geometries Ltd.Inventors: Eduardo Napadensky, Eliahu M. Kritchman, Avi Cohen
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Patent number: 7209797Abstract: A system and method for building three dimensional objects may adjust data used to build the objects to, for example, improve quality or correct for defects. A printer may, for example, accept data representing the object and modify the data according to an adjustment parameter; the printer may build the object according to the parameter. The parameter may be, for example, fixed in the printer, user entered, and/or calculated by the printer. In one embodiment, a support pedestal may be built of deposited material before the object is built.Type: GrantFiled: May 15, 2006Date of Patent: April 24, 2007Assignee: Objet Geometries Ltd.Inventors: Eliahu M. Kritchman, Dani Chechik, Tatyana Rodin-Entin, Hanan Gothait
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Patent number: 7183335Abstract: Compositions for use in the manufacture of three-dimensional objects including compositions for use as a support and/or release material in the manufacture of the three-dimensional objects are provided. There is thus provided, in accordance with an embodiment of the present invention, a composition suitable for building a three-dimensional object. The compositions may include, inter alia, a curable component, having a functional group, wherein if the functional group is a polymerizable reactive functional group, then the functional group is a (meth)acrylic functional group, a photo-initiator, a surface-active agent and a stabilizer; wherein said composition has a first viscosity of about 50–500 cps at a first temperature, wherein said first temperature is ambient temperature, and a second viscosity lower than 20 cps at a second temperature wherein said second temperature is higher than said first temperature, wherein, after curing, the composition results in a solid form.Type: GrantFiled: April 5, 2005Date of Patent: February 27, 2007Assignee: Objet Geometries Ltd.Inventor: Eduardo Napadensky
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Patent number: 6863859Abstract: The present invention relates to novel polymeric compositions that exhibit Reverse Thermal Gelation (RTG) properties for use as Support Materials (SM) in the manufacture of three-dimensional objects. These polymers are Temperature Sensitive Polymers that respond with a significant change of properties to a small change in temperature. Temperature Sensitive Polymers exhibit cloud point (CP) or lower critical solution temperature (LCST) in aqueous solutions. Water-soluble Temperature Sensitive Polymers are chosen to give low viscosity liquid at low temperature when dissolved in water and by that to permit easy dispensing at low temperature. Raising the temperature above their gelation temperature (Tgel) will result in solidification of the composition. At its gel position the material has favorable characteristics as a support and building material. The gel layers have the appropriate toughness and dimensional stability to support the model layers during the building process.Type: GrantFiled: August 15, 2002Date of Patent: March 8, 2005Assignee: Objet Geometries Ltd.Inventor: Avraham Levy
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Patent number: 6850334Abstract: A system and a method for printing of three-dimensional models and apparatus for controlling the height and thickness of the layers of interface material forming the 3-D models being printed, is provided. The method includes the steps of dispensing a pre-determined quantity of interface material from at least one printing head to form at least one interface layer; leveling the dispensed interface material to a pre-determined height; curing the leveled interface material; and repeating the steps of dispensing, leveling and curing thereby producing a plurality of interface layers to a configured pattern layer for forming the three-dimensional model.Type: GrantFiled: January 18, 2000Date of Patent: February 1, 2005Assignee: Objet Geometries LTDInventor: Hanan Gothait
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Patent number: 6658314Abstract: A method and a system for three-dimensional printing of a three-dimensional model is provided. The method includes dispensing a first interface material from a printing head, dispensing at least a second interface material from the printing head and combining the first and second interface material in pre-determined proportions to produce layers for forming the three-dimensional model. In one embodiment, the layers forming the construction layers of the model are formed from interface material having a harder modulus of elasticity from the layers forming the release layers, thereby allowing for the forming complex three-dimensional shapes.Type: GrantFiled: October 6, 1999Date of Patent: December 2, 2003Assignee: Objet Geometries Ltd.Inventor: Hanan Gothait
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Patent number: 6259962Abstract: Apparatus and a method for three-dimensional printing of a three-dimensional model is provided. The apparatus includes a printing head having a plurality of nozzles, a dispenser connected to the printing head for selectively dispensing interface material in layers and curing means for optionally curing each of the layers deposited. The depth of each deposited layer is controllable by selectively adjusting the output from each of the plurality of nozzles.Type: GrantFiled: May 3, 1999Date of Patent: July 10, 2001Assignee: Objet Geometries Ltd.Inventor: Hanan Gothait