Patents by Inventor Yehoshua Sheinman
Yehoshua Sheinman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11969794Abstract: A method for preserving the shape of an object during sintering includes filling at least one volume defined by a surface of the object with a plurality of balls, sintering the object together with the balls and separating the object from the balls post sintering. The balls have a diameter of 0.5 mm-12 mm.Type: GrantFiled: May 11, 2020Date of Patent: April 30, 2024Assignee: Stratasys Ltd.Inventors: Shai Hirsch, Yehoshua Sheinman
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Patent number: 11858044Abstract: A system includes a plurality of building trays, a printing station, a powder delivery station, a powder spreading station, a process compaction station and a stage. The printing station prints a mask pattern on each of the plurality of building trays. The powder delivery station applies a dose of powder material on each of the plurality of building trays. The powder spreading station configured to spread the dose of powder material on each of the plurality of building trays. The process compaction station compacts the powder material. The stage concurrently advances the plurality of building trays to each of the stations to concurrently build a single layer on each the plurality of building trays and repeats the advancing to build a plurality of layers on each of the plurality of building trays. A three dimensional object is formed in each of the building trays.Type: GrantFiled: May 29, 2017Date of Patent: January 2, 2024Assignee: Stratasys Ltd.Inventor: Yehoshua Sheinman
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Publication number: 20230407665Abstract: A printing system for printing the lower base of a wind tower or the entire wind tower. The system includes a printing device configured to print the coaxial polymeric shells with an empty volume between the shells. The printing device uses the coaxial polymeric shells as driving rails. A concrete material deposition device configured to deposit the concrete material into the empty volume between the polymeric shells, and a rebar handling device is configured to deliver rebars into the volume between the polymeric shells to reinforce the deposited concrete material.Type: ApplicationFiled: September 2, 2022Publication date: December 21, 2023Inventor: Yehoshua Sheinman
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Patent number: 11826829Abstract: A method for dynamically controlling layer thickness during an additive manufacturing process of building a block including an object with layers of powder material, detecting a height of the block after each layer is compacted, determining a delta between the detected height and a height in a computer model defining slices of the block and compensating for the determined delta in subsequent cycles. A cycle in the additive manufacturing process includes selectively printing a layer pattern, spreading a powder layer over the layer pattern with a spreader and compacting the powder layer with the layer pattern.Type: GrantFiled: November 14, 2018Date of Patent: November 28, 2023Assignee: Stratasys Ltd.Inventors: Yehoshua Sheinman, Shai Hirsch, Almog Shahar
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Patent number: 11806997Abstract: Some embodiments relate to printing system is described that has an intermediate transfer member (ITM) in the form of a seamed endless belt for transporting an ink image from an image forming station, at which an ink image is deposited on ITM, to an impression station, where the ink image is transferred onto a printing substrate. Two drive members are provided for movement in synchronism with one another. Rotation of the drive members during installation of a new ITM serves to thread the strip through the printing system by pulling the strip from its leading end. Alternatively or additionally, indirect printing system comprising the ITM and an image forming station at which droplets of ink are applied to the ITM to form ink images thereon is disclosed. One or more blowing mechanisms (e.g. associated with the image forming station) are disclosed herein.Type: GrantFiled: October 21, 2021Date of Patent: November 7, 2023Assignee: LANDA CORPORATION LTD.Inventors: Aharon Shmaiser, Haggai Karlinski, Alon Siman-Tov, Yehoshua Sheinman, Daniel Alkhanati, Elad Pur Buchray
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Publication number: 20230311478Abstract: Some embodiments relate to printing system is described that has an intermediate transfer member (ITM) in the form of a seamed endless belt for transporting an ink image from an image forming station, at which an ink image is deposited on ITM, to an impression station, where the ink image is transferred onto a printing substrate. Two drive members are provided for movement in synchronism with one another. Rotation of the drive members during installation of a new ITM serves to thread the strip through the printing system by pulling the strip from its leading end. Alternatively or additionally, indirect printing system comprising the ITM and an image forming station at which droplets of ink are applied to the ITM to form ink images thereon is disclosed. One or more blowing mechanisms (e.g. associated with the image forming station) are disclosed herein.Type: ApplicationFiled: April 20, 2023Publication date: October 5, 2023Inventors: AHARON SHMAISER, SAGI MOSKOVICH, Zohar GOLDENSTEIN, MATAN BAR-ON, YIFTACH KATZIR, HAGGAI KARLINSKI, ALON SIMAN-TOV, YEHOSHUA SHEINMAN, DANIEL ALKHANATI, ELAD PUR BUCHRAY
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Publication number: 20230271249Abstract: 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: ApplicationFiled: May 10, 2023Publication date: August 31, 2023Applicant: Stratasys Ltd.Inventors: Yehoshua SHEINMAN, Shai HIRSCH, Almog SHAHAR, Uri GRACH, Kirill TANHILEVICH
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Patent number: 11691196Abstract: 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: GrantFiled: June 7, 2021Date of Patent: July 4, 2023Assignee: Stratasys Ltd.Inventors: Yehoshua Sheinman, Shai Hirsch, Almog Shahar, Uri Grach, Kirill Tanhilevich
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Publication number: 20230202162Abstract: A printing process is disclosed which comprises directing droplets of an ink onto an intermediate transfer member to form an ink image, the ink including an organic polymeric resin and a coloring agent in an aqueous carrier, and the transfer member having a hydrophobic outer surface so that each ink droplet in the ink image spreads on impinging upon the intermediate transfer member to form an ink film. The ink is dried while the ink image is being transported by the intermediate transfer member by evaporating the aqueous carrier from the ink image to leave a residue film of resin and coloring agent. The residue film is then transferred to a substrate.Type: ApplicationFiled: December 18, 2022Publication date: June 29, 2023Inventors: Benzion LANDA, Yehoshua SHEINMAN, Sagi ABRAMOVICH, Galia GOLODETZ, Gregory NAKHMANOVICH, Meir SORIA
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Patent number: 11559982Abstract: A printing process is disclosed which comprises directing droplets of an ink onto an intermediate transfer member to form an ink image, the ink including an organic polymeric resin and a coloring agent in an aqueous carrier, and the transfer member having a hydrophobic outer surface so that each ink droplet in the ink image spreads on impinging upon the intermediate transfer member to form an ink film. The ink is dried while the ink image is being transported by the intermediate transfer member by evaporating the aqueous carrier from the ink image to leave a residue film of resin and coloring agent. The residue film is then transferred to a substrate.Type: GrantFiled: February 24, 2021Date of Patent: January 24, 2023Assignee: LANDA CORPORATION LTD.Inventors: Benzion Landa, Yehoshua Sheinman, Sagi Abramovich, Galia Golodetz, Gregory Nakhmanovich, Meir Soria
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Patent number: 11400516Abstract: A method for producing a three-dimensional model via additive manufacturing includes building a green block in a layerwise manner with a powder material and a solidifiable non-powder material. The green block includes a green usable model. The solidified non-powder material is removed from the green block to extract the green usable model from the green block and the density of the green usable model is increased by applying Cold Isostatic Pressing (CIP). The green usable model is then sintered to produce a three-dimensional model.Type: GrantFiled: March 20, 2018Date of Patent: August 2, 2022Assignee: Stratasys Ltd.Inventors: Yehoshua Sheinman, Shai Hirsch
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Publication number: 20220234102Abstract: A method for preserving the shape of an object during sintering includes filling at least one volume defined by a surface of the object with a plurality of balls, sintering the object together with the balls and separating the object from the balls post sintering. The balls have a diameter of 0.5 mm-12 mm.Type: ApplicationFiled: May 11, 2020Publication date: July 28, 2022Applicant: Stratasys Ltd.Inventors: Shai HIRSCH, Yehoshua SHEINMAN
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Publication number: 20220226894Abstract: A method for sintering objects formed with aluminum powder includes forming a shape of an object with aluminum powder, selecting a sintering atmosphere and sintering the object in the sintering atmosphere. The sintering atmosphere includes Nitrogen and one or more of Argon and partial vacuum. The selection is based on a desired balance of degree of shrinkage and mechanical properties to be achieved.Type: ApplicationFiled: May 11, 2020Publication date: July 21, 2022Applicant: Stratasys Ltd.Inventors: Shai HIRSCH, Yehoshua SHEINMAN
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Publication number: 20220111633Abstract: Some embodiments relate to printing system is described that has an intermediate transfer member (ITM) in the form of a seamed endless belt for transporting an ink image from an image forming station, at which an ink image is deposited on ITM, to an impression station, where the ink image is transferred onto a printing substrate. Two drive members are provided for movement in synchronism with one another. Rotation of the drive members during installation of a new ITM serves to thread the strip through the printing system by pulling the strip from its leading end. Alternatively or additionally, indirect printing system comprising the ITM and an image forming station at which droplets of ink are applied to the ITM to form ink images thereon is disclosed. One or more blowing mechanisms (e.g. associated with the image forming station) are disclosed herein.Type: ApplicationFiled: October 21, 2021Publication date: April 14, 2022Inventors: AHARON SHMAISER, SAGI MOSKOVICH, Zohar GOLDENSTEIN, MATAN BAR-ON, YIFTACH KATZIR, HAGGAI KARLINSKI, ALON SIMAN-TOV, YEHOSHUA SHEINMAN, DANIEL ALKHANATI, ELAD PUR BUCHRAY
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Publication number: 20220040763Abstract: A method to define construction of a green compact with at least one object embedded therein is disclosed. The method includes receiving three-dimensional data defining the at least one object and identifying a planar surface in the at least one object based on the three-dimensional data. Orientation of the at least one object is defined so that the planar surface extends at least partially over a Z height of the green compact. A mask pattern is defined per layer to form the at least one object in the defined orientation by an additive manufacturing process with powder material.Type: ApplicationFiled: December 16, 2019Publication date: February 10, 2022Applicant: Stratasys Ltd.Inventors: Shai HIRSCH, Yehoshua SHEINMAN, Stanislav SHTILERMAN
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Patent number: 11179928Abstract: Some embodiments relate to printing system is described that has an intermediate transfer member (ITM) in the form of a seamed endless belt for transporting an ink image from an image forming station, at which an ink image is deposited on ITM, to an impression station, where the ink image is transferred onto a printing substrate. Two drive members are provided for movement in synchronism with one another. Rotation of the drive members during installation of a new ITM serves to thread the strip through the printing system by pulling the strip from its leading end. Alternatively or additionally, indirect printing system comprising the ITM and an image forming station at which droplets of ink are applied to the ITM to form ink images thereon is disclosed. One or more blowing mechanisms (e.g. associated with the image forming station) are disclosed herein.Type: GrantFiled: May 26, 2020Date of Patent: November 23, 2021Assignee: LANDA CORPORATION LTD.Inventors: Aharon Shmaiser, Sagi Moskovich, Zohar Goldenstein, Matan Bar-On, Yiftach Katzir, Haggai Karlinski, Alon Siman-Tov, Yehoshua Sheinman, Daniel Alkhanati, Elad Pur Buchray
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Publication number: 20210291273Abstract: 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: ApplicationFiled: June 7, 2021Publication date: September 23, 2021Applicant: Stratasys Ltd.Inventors: Yehoshua SHEINMAN, Shai HIRSCH, Almog SHAHAR, Uri GRACH, Kirill TANHILEVICH
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Publication number: 20210283899Abstract: A printing process is disclosed which comprises directing droplets of an ink onto an intermediate transfer member to form an ink image, the ink including an organic polymeric resin and a coloring agent in an aqueous carrier, and the transfer member having a hydrophobic outer surface so that each ink droplet in the ink image spreads on impinging upon the intermediate transfer member to form an ink film. The ink is dried while the ink image is being transported by the intermediate transfer member by evaporating the aqueous carrier from the ink image to leave a residue film of resin and coloring agent. The residue film is then transferred to a substrate.Type: ApplicationFiled: February 24, 2021Publication date: September 16, 2021Inventors: Benzion LANDA, Yehoshua SHEINMAN, Sagi ABRAMOVICH, Galia GOLODETZ, Gregory NAKHMANOVICH, Meir SORIA
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Patent number: 11059100Abstract: 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: GrantFiled: April 11, 2019Date of Patent: July 13, 2021Assignee: Stratasys Ltd.Inventors: Yehoshua Sheinman, Shai Hirsch, Almog Shahar, Uri Grach, Kirill Tanhilevich
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Patent number: 10994333Abstract: A system (100) for building a three dimensional object includes a powder delivery station (10) for applying a layer of powder material on a building tray (200), a digital printing station (30) for printing a mask pattern on the layer, a sintering station (50) for selectively sintering the portion of the layer that is defined by the mask to be sintered and a stage (250) for repeatedly advancing the building tray (200) to each of the powder delivery station, digital printing station and sintering station to build a plurality of layers that together form the three dimensional object. The mask pattern defines a negative portion of the layer to be sintered. Optionally, the system includes a die compaction station (40) for compacting per layer of powder material.Type: GrantFiled: May 7, 2015Date of Patent: May 4, 2021Assignee: Stratasys Ltd.Inventor: Yehoshua Sheinman