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公开(公告)号：US10850236B2
公开(公告)日：2020-12-01
申请号：US14840964
申请日：2015-08-31
Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
Inventor： John Steven Paschkewitz , David Mathew Johnson
Abstract: A mixing system has a parallel droplet dispenser capable of making droplets of a first working material in the range of 10 nanometers to 10 micrometers, a pump to deliver fluid for the droplets of the first working material and to produce a first emulsion, a compact mixer having low inter-voxel mixing to receive the emulsion and produce a homogenous material, and a dispensing system. A method of dispensing a graded material includes generating droplets of a first working material, the droplets having a size in the range of 10 nanometers to 10 micrometers, adding the droplets of the first working material into a fluid to create a first emulsion, wherein addition of the droplets of the first working material is controlled to create gradient in the emulsion, mixing the first emulsion to create a homogenous, graded mixture, and dispensing the homogenous, graded mixture onto a surface.
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公开(公告)号：US10029416B2
公开(公告)日：2018-07-24
申请号：US14166834
申请日：2014-01-28
Applicant: Palo Alto Research Center Incorporated
Inventor： David Mathew Johnson , Armin R. Volkel , Victor Beck , John Steven Paschkewitz
IPC: B29C67/00 , B05B17/04 , B29C64/112 , B29C64/20 , B29K105/00 , B29K101/12 , B33Y10/00 , B33Y30/00
Abstract: Polymer spray deposition systems and methods are disclosed that can be used with a wide range of thermoplastic materials to produce high resolution objects having the complexity and structural integrity typically only achieved using more traditional manufacturing techniques, like injection molding processes. The polymeric spray deposition systems and methods use a spray generator that stretches the fluid between two diverging surfaces, such as two rollers or between two pistons. The stretched fluid breaks apart into a plurality of droplets and is guided through a delivery system, that can include an optional droplet size selector, and into a multi-nozzle array. The multi-nozzle array is controlled and directs the spray onto a target surface, thereby creating a three-dimensional object. The disclosed polymer spray deposition systems and methods can be used in three-dimensional print heads and printing techniques.
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3.发明申请公开(公告)号：US20150021161A1
公开(公告)日：2015-01-22
申请号：US13944851
申请日：2013-07-17
Applicant: Palo Alto Research Center Incorporated
Inventor： David Mathew Johnson , Armin R. Volkel , John Steven Paschkewitz
CPC classification number: B01J19/088 , B01J19/123 , G03F7/0002
Abstract: A liquid thin film is disposed on a conveyor surface (e.g., a roller or belt) that moves the thin film into a precisely controlled gap (or nip) region in which the liquid thin film is subjected to an electric field that causes the liquid to undergo Electrohydrodynamic (EHD) patterning deformation, whereby portions of the liquid thin film form patterned liquid features having a micro-scale patterned shape. A curing mechanism (e.g., a UV laser) is used to solidify (e.g., in the case of polymer thin films, cross-link) the patterned liquid inside or immediately after exiting the gap region. The patterned structures are either connected by an intervening web as part of a polymer sheet, or separated into discreet micro-scale structures. Nanostructures (e.g., nanotubes or nanowires) disposed in the polymer become vertically oriented during the EHD patterning process. Segmented electrodes and patterned charges are utilized to provide digital patterning control.
Abstract translation: 液体薄膜设置在将薄膜移动到精确控制的间隙（或辊隙）区域中的输送机表面（例如，辊或带）上，在该区域中液体薄膜经受电场，使得液体 进行电液动力学（EHD）图案变形，由此部分液体薄膜形成具有微尺度图案形状的图案化液体特征。 使用固化机构（例如，UV激光）将图案化液体固化（例如，在聚合物薄膜的情况下，将图案化的液体交联）在离开间隙区域之后或之后。 图案化结构通过作为聚合物片材的一部分的介入纤维网连接，或分离成分立的微尺度结构。 设置在聚合物中的纳米结构（例如，纳米管或纳米线）在EHD图案化工艺期间变得垂直取向。 利用分段电极和图案化电荷来提供数字图案化控制。
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公开(公告)号：US11904277B2
公开(公告)日：2024-02-20
申请号：US17080574
申请日：2020-10-26
Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
Inventor： John Steven Paschkewitz , David Mathew Johnson
IPC: B01D61/36 , B29C64/112 , B01F23/41 , B01F25/314 , B01F33/30 , B01F35/81 , B01F35/71
CPC classification number: B01D61/36 , B01F23/41 , B01F25/3141 , B01F25/31422 , B01F33/30 , B01F35/7176 , B01F35/81 , B29C64/112
Abstract: A method of dispensing a graded material includes generating droplets of a first working material, the droplets having a size in the range of 10 nanometers to 10 micrometers, adding the droplets of the first working material into a carrier fluid to create a first emulsion, wherein addition of the droplets of the first working material is controlled to create gradient in the emulsion, mixing the first emulsion to create a homogenous, graded mixture, and dispensing the homogenous, graded mixture onto a surface.
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公开(公告)号：US10391706B2
公开(公告)日：2019-08-27
申请号：US16016925
申请日：2018-06-25
Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
Inventor： David Mathew Johnson , Armin R. Volkel , Victor Beck , John Steven Paschkewitz
IPC: B29C64/20 , B29C64/106 , B05B17/04 , B29C64/112 , B29K105/00 , B29K101/12 , B33Y10/00 , B33Y30/00
Abstract: A method of creating a three-dimensional object includes generating a spray from a fluid by stretching the fluid between two diverging surfaces into a fluid filament until the fluid filament breaks into a plurality of droplets and forms the spray, entraining the spray in a carrier gas flow, directing the carrier gas flow toward a target surface through a multi-nozzle array, and repeatedly applying the carrier gas flow on a target surface to form the three-dimensional object by controlling the direction of the carrier gas flow toward the target surface.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09486960B2
公开(公告)日：2016-11-08
申请号：US14578044
申请日：2014-12-19
Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
Inventor： John Steven Paschkewitz , Gabriel Iftime , Victor Alfred Beck , David Mathew Johnson
IPC: B29C47/06 , B29C67/00 , B33Y30/00 , B29K101/10
CPC classification number: B29C64/112 , B29B7/90 , B29C64/20 , B29C64/386 , B29K2075/00 , B29K2101/10 , B29K2307/04 , B33Y30/00 , B33Y50/02 , B33Y70/00
Abstract: A system to fabricate hierarchical graded materials includes a reservoir to contain a material to be deposited, a print head connected to the reservoir to allow the print head to receive the material to be deposited, the print head having a mixing section, and an actuator connected to the print head, the actuator configured to actuate the print head in six axes of motion.
Abstract translation: 制造分级分级材料的系统包括容纳要沉积的材料的储存器，连接到储存器的打印头，以允许打印头接收待沉积的材料，打印头具有混合部分，以及连接的致动器 致动器被配置为以六个运动轴致动打印头。
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公开(公告)号：US09039156B2
公开(公告)日：2015-05-26
申请号：US13765281
申请日：2013-02-12
Applicant: Palo Alto Research Center Incorporated
Inventor： John Steven Paschkewitz , Eric J. Shrader
CPC classification number: B41J2/20 , B41J2/0057 , B41J2/14201 , B41J2002/14403 , B41J2002/14419 , B41J2202/07
Abstract: A particle removal device for an ink jet printer is discussed. The particle removal device includes a first separator comprising an arrangement of obstacles including at least two rows of obstacles that extend laterally with respect to a flow path of ink in the first separator. The rows of obstacles are offset from one another by a row offset fraction. The arrangement of obstacles is configured to preferentially route larger particles having diameters greater than a critical diameter through the arrangement and along a first trajectory vector that is angled with respect to the direction of the flow path of the ink. The angle of the first trajectory vector with respect to the ink flow path is a function of the row offset fraction. Smaller particles having diameters less than the critical diameter travel through the arrangement along a second trajectory vector that is not substantially angled with respect to the flow path of the ink. The first separator causes a pressure drop of the ink of less than about 100 Pa.
Abstract translation: 讨论了用于喷墨打印机的颗粒去除装置。 颗粒去除装置包括第一分离器，其包括障碍物的布置，其包括相对于第一分离器中的油墨的流动路径横向延伸的至少两排障碍物。 障碍物行通过行偏移分数彼此偏移。 障碍物的布置被配置为优先通过布置优先路径具有大于临界直径的直径的较大颗粒，并且沿着相对于油墨的流动路径的方向成角度的第一轨迹矢量。 第一轨迹矢量相对于油墨流动路径的角度是行偏移分数的函数。 具有小于临界直径的直径的较小颗粒沿着相对于油墨的流动路径基本上不成角度的第二轨迹矢量行进通过该装置。 第一分离器使油墨的压降小于约100Pa。
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公开(公告)号：US20130155130A1
公开(公告)日：2013-06-20
申请号：US13765281
申请日：2013-02-12
Applicant: Palo Alto Research Center Incorporated
Inventor： John Steven Paschkewitz , Eric J. Shrader
IPC: B41J2/20
CPC classification number: B41J2/20 , B41J2/0057 , B41J2/14201 , B41J2002/14403 , B41J2002/14419 , B41J2202/07
Abstract: A particle removal device for an ink jet printer is discussed. The particle removal device includes a first separator comprising an arrangement of obstacles including at least two rows of obstacles that extend laterally with respect to a flow path of ink in the first separator. The rows of obstacles are offset from one another by a row offset fraction. The arrangement of obstacles is configured to preferentially route larger particles having diameters greater than a critical diameter through the arrangement and along a first trajectory vector that is angled with respect to the direction of the flow path of the ink. The angle of the first trajectory vector with respect to the ink flow path is a function of the row offset fraction. Smaller particles having diameters less than the critical diameter travel through the arrangement along a second trajectory vector that is not substantially angled with respect to the flow path of the ink. The first separator causes a pressure drop of the ink of less than about 100 Pa.
Abstract translation: 讨论了用于喷墨打印机的颗粒去除装置。 颗粒去除装置包括第一分离器，其包括障碍物的布置，其包括相对于第一分离器中的油墨的流动路径横向延伸的至少两排障碍物。 障碍物行通过行偏移分数彼此偏移。 障碍物的布置被配置为优先通过布置优先路径具有大于临界直径的直径的较大颗粒，并且沿着相对于油墨的流动路径的方向成角度的第一轨迹矢量。 第一轨迹矢量相对于油墨流动路径的角度是行偏移分数的函数。 具有小于临界直径的直径的较小颗粒沿着相对于油墨的流动路径基本上不成角度的第二轨迹矢量行进通过该装置。 第一分离器使油墨的压降小于约100Pa。
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公开(公告)号：US10173365B2
公开(公告)日：2019-01-08
申请号：US15848378
申请日：2017-12-20
Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
Inventor： John Steven Paschkewitz , Eric Shrader , Victor Beck
Abstract: The disclosed spray deposition systems and methods use spray charging and discharging techniques to assist with digital deposition of spray droplets on a substrate. For example, the disclosed systems and methods have a charging system that generates spray droplets from a spray generator and charges the droplets. Focusing electrodes help to collimate the droplets into a tight droplet stream and, optionally, steering electrodes help direct the tight droplet stream. A charge removal system neutralizes or removes the charge from the droplets, either during the deposition of the droplets on a substrate or after the droplets have been deposited on a substrate.
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公开(公告)号：US10138317B2
公开(公告)日：2018-11-27
申请号：US15605433
申请日：2017-05-25
Applicant: PALO ALTO RESEARCH CENTER INCORPORATED
Inventor： Gabriel Iftime , John Steven Paschkewitz
IPC: C08F292/00 , C01B13/14 , C09C1/44 , C09C3/08 , C08K7/00 , C08G59/00 , C08K9/08 , C08G69/00 , C08G69/02 , C08G71/02 , C08G83/00
Abstract: A method of forming lightweight structures from particle networks includes functionalizing edges of particles of an anisotropic material, exfoliating of the particles to form sheets of the material, aligning the sheets of material to form a network of multi-layered and aligned particles, and forming a structure out of the network of particles. One example uses graphite powder mixed into 4-aminobenzoic acid for edge functionalization, and exfoliation occurs with sonication in a solvent. The resulting particles undergo alignment with an aligning nozzle that also dispenses the aligned particles to form a structure.
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