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96 条记录 (耗时 0.033 秒)

    Process of making a molded refractory article
    14.
    发明授权
    Process of making a molded refractory article 失效
    制造耐火制品的方法

    公开(公告)号：US5989476A

    公开(公告)日：1999-11-23

    申请号：US97225

    申请日：1998-06-12

    申请人： Michael S. Lockard ,  Kris Schmidt ,  Charles W. Hull

    发明人： Michael S. Lockard ,  Kris Schmidt ,  Charles W. Hull

    IPC分类号： B22F3/00 ,  B22F3/10 ,  B22F3/12 ,  B29C33/38 ,  B29C35/08 ,  B29C41/02

    CPC分类号： C22C1/1015 ,  B22F3/008 ,  B22F3/1021 ,  B22F3/1283 ,  B22F3/1291 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00

    摘要： A method for making a molded refractory article including the steps of providing a mold including a master pattern, the mold and master pattern defining a mold cavity; filling the mold cavity with a mixture comprising refractory particles and a heat fugitive binder; placing the assembly of the mold, master pattern and mixture in a furnace; curing the mixture; separating the mold and master pattern from the cured mixture; removing the binder to form a porous structure, sintering the porous structure to provide a porous refractory article and infiltrating the porous refractory article with a filler metal.

    摘要翻译： 一种制造模制耐火制品的方法，包括以下步骤：提供包括母模的模具，所述模具和主模式限定模腔; 用包含耐火颗粒和耐热粘结剂的混合物填充模腔; 将模具，主模式和混合物的组件放置在炉中; 固化混合物; 将模具和母版图案与固化混合物分离; 去除粘合剂以形成多孔结构，烧结多孔结构以提供多孔耐火制品并用填充金属渗透多孔耐火制品。

    Wall smoothness, feature accuracy and resolution in projected images via exposure levels in solid imaging
    15.
    发明授权
    Wall smoothness, feature accuracy and resolution in projected images via exposure levels in solid imaging 有权
    通过固体成像中的曝光水平，投影图像的壁面光滑度，特征精度和分辨率

    公开(公告)号：US09415544B2

    公开(公告)日：2016-08-16

    申请号：US11468090

    申请日：2006-08-29

    申请人： Thomas Alan Kerekes ,  Jouni P. Partanen ,  Yong Chen ,  Charles W. Hull

    发明人： Thomas Alan Kerekes ,  Jouni P. Partanen ,  Yong Chen ,  Charles W. Hull

    IPC分类号： B29C67/00

    CPC分类号： B29C67/0066 ,  B29C64/135 ,  B29C64/386 ,  B29C64/40 ,  B29K2995/0073 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B33Y70/00 ,  B33Y80/00 ,  G05B19/4099 ,  G05B2219/49019

    摘要： A solid imaging apparatus and method employing levels of exposure varied with gray scale or time or both of digitally light projected image of a cross-section of a three-dimensional object on a solidifiable photopolymer build material. The gray scale levels of exposure of projected pixels permits the polymerization boundaries in projected boundary pixels to be controlled to achieve preserved image features in a three-dimensional object and smooth out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Software is used to control intensity parameters applied to pixels to be illuminated in the image projected in the cross-section being exposed in the image plane.

    摘要翻译： 一种固体成像装置和方法，其采用灰度或时间变化的曝光程度，或者在可凝固的光致聚合物构建材料上的三维物体的横截面的数字光投影图像。 投影像素的灰度级曝光允许控制投影边界像素中的聚合边界，以实现三维物体中保存的图像特征，并平滑粗糙或不均匀的边缘，否则将使用数字投影仪发生的限制。 图像中的像素数量投影在图像的大小上。 软件用于控制应用于在图像平面中暴露的横截面中投影的图像中要照明的像素的强度参数。

    Bubble-free cross-sections for use in solid imaging
    16.
    发明授权
    Bubble-free cross-sections for use in solid imaging 有权
    无气泡横截面用于固体成像

    公开(公告)号：US07906061B2

    公开(公告)日：2011-03-15

    申请号：US11375917

    申请日：2006-03-15

    申请人： Jouni P. Partanen ,  Raymond M. Soliz ,  Dennis F. McNamara, Jr. ,  Charles R. Sperry ,  Charles W. Hull

    发明人： Jouni P. Partanen ,  Raymond M. Soliz ,  Dennis F. McNamara, Jr. ,  Charles R. Sperry ,  Charles W. Hull

    IPC分类号： B29C35/08 ,  B29C41/02

    CPC分类号： B29C64/135 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00

    摘要： 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 layers of transferred solidifiable liquid build material and to cleanly separate the solidified build material from the radiation transparent build material carrier as each layer is formed during the layerwise building of a three-dimensional object.An expandable membrane forming an arcuate dome and a reciprocatible flexible film are employed to effect transfer of the solidifiable liquid build material.

    摘要翻译： 一种使用构建材料转移装置的固体成像装置和方法，其有效地将可固化的液体构建材料从辐射透明构建材料载体的第一侧转移到接收基底，而不会在转移的可固化液体构建材料的层中夹带气泡，并且将干燥的 当在三维物体的分层建造期间形成每个层时，来自辐射透明构建材料载体的固化的构建材料。 使用形成弓形圆顶和可互换柔性膜的可膨胀膜来实现可凝固的液体构建材料的转移。

    Recoating system for using high viscosity build materials in solid freeform fabrication
    18.
    发明授权
    Recoating system for using high viscosity build materials in solid freeform fabrication 失效

    公开(公告)号：US06656410B2

    公开(公告)日：2003-12-02

    申请号：US10052506

    申请日：2002-01-17

    申请人： Charles W. Hull ,  Kenneth J. Newell

    发明人： Charles W. Hull ,  Kenneth J. Newell

    IPC分类号： B29C3508

    CPC分类号： B22F3/008 ,  B22F1/0074 ,  B29C35/00 ,  B29C41/12 ,  B29C64/106 ,  B29C64/124 ,  B29C64/153 ,  B29K2105/0094 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

    摘要： A method of applying highly viscous paste-like build materials in layers in a solid freeform fabrication apparatus to form three-dimensional objects. A viscosity modifier is first introduced into the build material to establish a low viscosity state and then the material is dispensed in layers on a working surface. The viscosity modifier is then removed from the build material preferably by evaporation, and the layer is selectively solidified to form the three-dimensional object. The method substantially eliminates the undesirable effects of induced shear stress imposed on lower layers when attempting to apply uniform layers of highly viscous materials in solid freeform fabrication techniques. The method allows for the use of highly viscous paste-like materials that can include upwards of 50% by weight of metallic, ceramic, mineral, or polymer powders. Preferably the binder is a photocurable resin or thermocurable material which is selectively solidified to form the three-dimensional objects.

    Molding method, apparatus, and device including use of powder metal technology for forming a molding tool with thermal control elements
    20.
    发明授权
    Molding method, apparatus, and device including use of powder metal technology for forming a molding tool with thermal control elements 失效
    成型方法，装置和装置，包括使用粉末金属技术形成具有热控制元件的模制工具

    公开(公告)号：US06224816B1

    公开(公告)日：2001-05-01

    申请号：US09156512

    申请日：1998-09-17

    申请人： Charles W. Hull ,  Michael S. Lockard ,  Thomas A. Almquist

    发明人： Charles W. Hull ,  Michael S. Lockard ,  Thomas A. Almquist

    IPC分类号： B29C3304

    CPC分类号： B22F5/007 ,  B29C33/04 ,  B29C67/04 ,  B29C70/68 ,  B33Y80/00

    摘要： Tool having a molding surface is formed from a flowable material (e.g., powder material) wherein the shape of molding surface is formed from a molding process using a master pattern having a surface with a shape substantially the same as the shape of the molding surface to be formed. The tool has at least one thermal control element located within it and spaced from the molding surface where a component used in forming the thermal control element is located within the flowable material prior to solidifying the material. The powder material is preferably a mixture of metals. The thermal control elements include fluid flow paths, heating elements, temperature sensors, and the like.

    摘要翻译： 具有模制表面的工具由可流动的材料（例如，粉末材料）形成，其中模制表面的形状由使用具有与模制表面的形状基本相同的形状的表面的母模的模制工艺形成， 形成。 该工具具有至少一个热控制元件，其位于其内并与模制表面间隔开，其中用于形成热控制元件的部件在固化材料之前位于可流动材料内。 粉末材料优选是金属的混合物。 热控制元件包括流体流动路径，加热元件，温度传感器等。