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公开(公告)号：US09227365B2
公开(公告)日：2016-01-05
申请号：US13642903
申请日：2011-04-21
CPC分类号： B29C64/386 , B29C64/106 , B29C64/112 , B29C64/135 , B29C64/393 , B29K2995/0015 , B33Y10/00 , B33Y50/02 , Y10T428/23
摘要： A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20.
摘要翻译： 公开了一种分层固体自由形成方法。 对于至少几个层中的每一个，该方法包括分配和硬化至少第一建模材料和第二建模材料，以形成至少部分围绕芯区域的芯区域和一个或多个包络区域。 在一些实施例中，当硬化时相邻区域的弹性模量之间的比率为约1至约20。
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公开(公告)号：US20130040091A1
公开(公告)日：2013-02-14
申请号：US13642903
申请日：2011-04-21
CPC分类号： B29C64/386 , B29C64/106 , B29C64/112 , B29C64/135 , B29C64/393 , B29K2995/0015 , B33Y10/00 , B33Y50/02 , Y10T428/23
摘要： A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20.
摘要翻译： 公开了一种分层固体自由形成方法。 对于至少几个层中的每一个，该方法包括分配和硬化至少第一建模材料和第二建模材料，以形成至少部分围绕芯区域的芯区域和一个或多个包络区域。 在一些实施例中，当硬化时相邻区域的弹性模量之间的比率为约1至约20。
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公开(公告)号：US09138981B1
公开(公告)日：2015-09-22
申请号：US12841622
申请日：2010-07-22
申请人： Shai Hirsch , Avraham Levy , Eduardo Napadensky
发明人： Shai Hirsch , Avraham Levy , Eduardo Napadensky
CPC分类号： C08L71/00 , B29C64/112 , B29C64/40 , B29K2071/00 , B33Y10/00 , B33Y70/00
摘要： The invention relates to a material composition, which may be a support material, for three-dimensional (3D) inkjet printing, comprising a glycol polymer, a low molecular weight polar substance and a surface active agent. The invention further provides a method for 3D inkjet printing comprising building a 3D object in layers, wherein at least one layer comprises a model material composition and a support material composition comprising PEG and a low molecular weight polar substance, wherein the layers are solidified before deposition of subsequent layers; and wherein, after solidification, the support material composition is removed by immersion of the solidified objet with the support in a liquid composition comprising a solvent.
摘要翻译： 本发明涉及用于三维（3D）喷墨印刷的材料组合物，其可以是支撑材料，其包含二醇聚合物，低分子量极性物质和表面活性剂。 本发明还提供了一种用于3D喷墨印刷的方法，其包括以层为单位构建3D物体，其中至少一层包括模型材料组合物和包含PEG和低分子量极性物质的载体材料组合物，其中所述层在沉积之前固化 的后续层; 并且其中，在固化之后，通过将固化的对象与所述载体浸渍在包含溶剂的液体组合物中来除去所述载体材料组合物。
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公开(公告)号：US20060000935A1
公开(公告)日：2006-01-05
申请号：US11168064
申请日：2005-06-28
申请人： Avraham Levy , Ronny Shatan
发明人： Avraham Levy , Ronny Shatan
IPC分类号： B65H75/40
CPC分类号： B65H75/40 , B65H75/4468 , B65H75/4478 , B65H75/4489 , B65H2403/481 , B65H2701/33 , F03B1/00 , F05B2240/241 , F05B2240/2411 , Y02E10/223 , Y02P70/30 , Y10T137/6929 , Y10T137/6932 , Y10T137/694 , Y10T137/6954
摘要： There is provided an hydraulic reeling-in device for a water-transmitting, flexible hose, having mounting elements, a hose reel, an hydraulic driver kinematically connected to the hose reel, a water inlet connectable to a water-supplying pipe line and a water outlet provided with a connector for the hose. There is further provided a valve having two positions, a first position in which the water is permitted to pass from the water inlet through the water outlet into the hose, and a second position in which water is permitted to pass from the water inlet to the hydraulic driver in order to reel-in the hose, and a tubular member adapted, in the second position of the valve, to conduct water to the hydraulic driver.
摘要翻译： 提供了一种用于透水柔性软管的液压卷取装置，其具有安装元件，软管卷轴，运动地连接到软管卷轴的液压驱动器，可连接到供水管线的水入口和水 出口设有软管连接器。 还提供了一种具有两个位置的阀，第一位置，允许水从入口通过出水口进入软管，第二位置允许水从入口通过到第二位置 液压驱动器以便卷入软管;以及管状部件，其适于在阀的第二位置，以将水引导到液压驱动器。
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5.发明授权Method and apparatus for generating and decoding a visually significant barcode 有权用于生成和解码视觉上有意义的条形码的方法和装置公开(公告)号：US06751352B1
公开(公告)日：2004-06-15
申请号：US09579070
申请日：2000-05-25
申请人： Izhak Baharav , Cormac Herley , Yihong Xu , Jonathan Yen , Timothy Harrison , Doron Shaked , Avraham Levy , Angela K. Hanson , Terry P. Mahoney
发明人： Izhak Baharav , Cormac Herley , Yihong Xu , Jonathan Yen , Timothy Harrison , Doron Shaked , Avraham Levy , Angela K. Hanson , Terry P. Mahoney
IPC分类号： G06K900
CPC分类号： G06K19/06037 , G06K1/121 , G06K19/06028
摘要： A barcode system for generating and decoding a barcode with visual significance. The barcode system of the present invention includes an encoding module for receiving a message and a logo and generating a visually significant barcode based on these inputs. A decoding module is also provided for receiving an acquired version of a visually significant barcode that may have been degraded in a typical document handling channel (e.g., through the printing, scanning, or copying process) and for recovering the message specified by the visually significant barcode.
摘要翻译： 一种用于生成和解码具有视觉意义的条形码的条形码系统。 本发明的条形码系统包括用于接收消息和标识的编码模块，并且基于这些输入产生视觉上有意义的条形码。 还提供了一种解码模块，用于接收在典型的文档处理通道（例如，通过打印，扫描或复制过程）中已被降级的视觉有意义的条形码的获取版本，并且用于恢复由视觉上显着的 条码。
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公开(公告)号：US07368484B2
公开(公告)日：2008-05-06
申请号：US11544624
申请日：2006-10-10
申请人： Avraham Levy
发明人： Avraham Levy
CPC分类号： B29C35/02 , B29C64/106 , B29C64/40 , B29C67/24 , B29K2995/0012 , B33Y10/00 , B33Y70/00 , C08L1/14 , C08L71/02 , C08L75/16 , C08L2666/02
摘要： 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. After the building process is completed the gel can be cooled down to a temperature below its Tgel so the gel can liquefy and be removed easily by rinsing with water.
摘要翻译： 本发明涉及在三维物体的制造中表现出用作支撑材料（SM）的反向热凝胶（RTG）性质的新型聚合物组合物。 这些聚合物是温度敏感聚合物，其响应特性的显着变化达到微小的温度变化。 温度敏感聚合物在水溶液中显示浊点（CP）或较低临界溶解温度（LCST）。 选择水溶性温度敏感聚合物，以便在溶解在水中时在低温下得到低粘度液体，并允许在低温下容易分配。 提高温度超过其凝胶化温度（T凝胶）会导致组合物的凝固。 在其凝胶位置，该材料具有作为支撑和建筑材料的有利特征。 凝胶层在建造过程中具有适当的韧性和尺寸稳定性以支持模型层。 在完成构建过程之后，凝胶可以冷却至低于其凝胶的温度，因此凝胶可以液化并通过用水冲洗容易地除去。
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公开(公告)号：US20070032563A1
公开(公告)日：2007-02-08
申请号：US11544624
申请日：2006-10-10
申请人： Avraham Levy
发明人： Avraham Levy
IPC分类号： C08F2/50
CPC分类号： B29C35/02 , B29C64/106 , B29C64/40 , B29C67/24 , B29K2995/0012 , B33Y10/00 , B33Y70/00 , C08L1/14 , C08L71/02 , C08L75/16 , C08L2666/02
摘要： 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. After the building process is completed the gel can be cooled down to a temperature below its Tgel so the gel can liquefy and be removed easily by rinsing with water.
摘要翻译： 本发明涉及在三维物体的制造中表现出用作支撑材料（SM）的反向热凝胶（RTG）性质的新型聚合物组合物。 这些聚合物是温度敏感聚合物，其响应特性的显着变化达到微小的温度变化。 温度敏感聚合物在水溶液中显示浊点（CP）或较低临界溶解温度（LCST）。 选择水溶性温度敏感聚合物，以便在溶解在水中时在低温下得到低粘度液体，并允许在低温下容易分配。 提高温度超过其凝胶化温度（T凝胶）会导致组合物的凝固。 在其凝胶位置，该材料具有作为支撑和建筑材料的有利特征。 凝胶层在建造过程中具有适当的韧性和尺寸稳定性以支持模型层。 在完成构建过程之后，凝胶可以冷却至低于其凝胶的温度，因此凝胶可以液化并通过用水冲洗容易地除去。
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公开(公告)号：US20070031055A1
公开(公告)日：2007-02-08
申请号：US11196320
申请日：2005-08-04
申请人： Asaf Golan , Avraham Levy
发明人： Asaf Golan , Avraham Levy
摘要： The contrast of a digital image is enhanced by forming a histogram of the luma values of an active area of the image, computing “initial” bin indices that partition the histogram into bins of substantially equal population, mapping the “initial” bin indices into “final” bin indices that are more uniformly spaced than the “initial” bin indices, and adjusting the luma values of all the pixels in accordance with the “final” bin indices.
摘要翻译： 通过形成图像的有效区域的亮度值的直方图来增强数字图像的对比度，计算将直方图分割成基本相等的群体的“初始”bin索引，将“初始”bin索引映射到“ 最终“bin索引，其比”初始“bin索引更均匀地间隔，并且根据”最终“bin索引来调整所有像素的亮度值。
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公开(公告)号：US06863859B2
公开(公告)日：2005-03-08
申请号：US10218514
申请日：2002-08-15
申请人： Avraham Levy
发明人： Avraham Levy
CPC分类号： B29C35/02 , B29C64/106 , B29C64/40 , B29C67/24 , B29K2995/0012 , B33Y10/00 , B33Y70/00 , C08L1/14 , C08L71/02 , C08L75/16 , C08L2666/02
摘要： 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. After the building process is completed the gel can be cooled down to a temperature below its Tgel so the gel can liquefy and be removed easily by rinsing with water.
摘要翻译： 本发明涉及在三维物体的制造中表现出用作支撑材料（SM）的反向热凝胶（RTG）性质的新型聚合物组合物。 这些聚合物是温度敏感聚合物，其响应特性的显着变化达到微小的温度变化。 温度敏感聚合物在水溶液中显示浊点（CP）或较低临界溶解温度（LCST）。 选择水溶性温度敏感聚合物，以便在溶解在水中时在低温下得到低粘度液体，并允许在低温下容易分配。 提高温度超过其凝胶化温度（Tgel）将导致组合物的凝固。 在其凝胶位置，该材料具有作为支撑和建筑材料的有利特征。 凝胶层在建造过程中具有适当的韧性和尺寸稳定性以支持模型层。 建筑过程完成后，凝胶可以冷却到低于其Tgel的温度，因此凝胶可以液化并通过用水冲洗容易地去除。
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10.发明授权Method and system of watermarking digital data using scaled bin encoding and maximum likelihood decoding 失效使用缩放bin编码和最大似然解码水印数字数据的方法和系统公开(公告)号：US06721439B1
公开(公告)日：2004-04-13
申请号：US09642223
申请日：2000-08-18
申请人： Avraham Levy , Neri Merhav
发明人： Avraham Levy , Neri Merhav
IPC分类号： G06K900
CPC分类号： G06T1/005 , G06T2201/0052 , G06T2201/0065 , G06T2201/0083 , H04N19/467 , H04N19/48 , H04N19/90 , H04N21/23892 , H04N21/8358
摘要： A transform domain watermarking technique which is based on a new encoding scheme referred to as scaled bin encoding which encodes a message in a set of transform coefficients by modifying their values in a way that preserves high image quality (i.e., low distortion levels) and adapts to expected noise level. Recapturing of the watermark image is performed via a decoding method using a maximum likelihood procedure (i.e., maximum likelihood decoding), based on the statistics of the transform coefficients and a worst case statistical model of the noise introduced to these coefficients by image processing operations or attack noise.
摘要翻译： 一种变换域水印技术，其基于称为缩放仓编码的新编码方案，其通过以保持高图像质量（即，低失真水平）的方式修改其值来编码一组变换系数中的消息，并适应 达到预期的噪音水平。 基于变换系数的统计和通过图像处理操作引入到这些系数的噪声的最坏情况统计模型，通过使用最大似然程序（即最大似然解码）的解码方法来执行水印图像的重新捕获，或 攻击噪音
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