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    Apparatus for building three-dimensional objects with sheets
    31.
    发明授权
    Apparatus for building three-dimensional objects with sheets 失效
    用板材建立三维物体的装置

    公开(公告)号：US5192559A

    公开(公告)日：1993-03-09

    申请号：US803681

    申请日：1991-12-03

    申请人： Charles W. Hull ,  Paul F. Jacobs ,  Kris A. Schmidt ,  Dennis R. Smalley ,  Wayne A. Vinson

    发明人： Charles W. Hull ,  Paul F. Jacobs ,  Kris A. Schmidt ,  Dennis R. Smalley ,  Wayne A. Vinson

    IPC分类号： B29C67/00

    CPC分类号： B29C67/0092 ,  B29C67/0062 ,  B29C67/0074 ,  Y10T156/1075 ,  Y10T156/108 ,  Y10T156/13 ,  Y10T156/17

    摘要： Systems for and methods of generating three-dimensional objects from a medium capable of selective physical transformation upon exposure to synergistic stimulation, whereby sheets of medium corresponding to cross-sectional layers of the three-dimensional object are dispensed from a source, the dispensed sheets then being selectively exposed to synergistic stimulation thereby forming a layer of the three-dimensional object, the areas not exposed to synergistic stimulation being removed, and whereby successive sheets corresponding to successive cross-sectional layers are dispensed and selectively exposed to synergistic stimulation and integrated together with preceding layers to provide substantially a layer by layer buildup of the three-dimensional object, thereby forming the three-dimensional object.

    摘要翻译： 用于从曝光协同刺激后能够进行选择性物理变换的介质产生三维物体的系统和方法，由此从源头分配对应于三维物体的横截面层的介质片，然后分配的片材 选择性地暴露于协同刺激，从而形成三维物体的层，不暴露于协同刺激的区域被去除，并且由此分配对应于连续横截面层的连续片材并选择性地暴露于协同刺激并与 以提供基本上三维物体的逐层累积，从而形成三维物体。

    Stereolithographic curl reduction
    33.
    发明授权
    Stereolithographic curl reduction 失效
    立体光刻卷曲减少

    公开(公告)号：US6048188A

    公开(公告)日：2000-04-11

    申请号：US106950

    申请日：1998-06-30

    申请人： Charles W. Hull ,  Stuart T. Spence ,  Charles W. Lewis ,  Wayne S. Vinson ,  Raymond S. Freed ,  Dennis R. Smalley

    发明人： Charles W. Hull ,  Stuart T. Spence ,  Charles W. Lewis ,  Wayne S. Vinson ,  Raymond S. Freed ,  Dennis R. Smalley

    IPC分类号： B29C67/00 ,  B44B1/00 ,  G01J1/42 ,  G03F7/00 ,  G03F7/20 ,  G06T17/00 ,  G06T17/10 ,  G06T17/20 ,  B29C35/08 ,  B29C41/02 ,  B29C41/52

    CPC分类号： B29C67/0066 ,  B29C67/0092 ,  B44B1/006 ,  G01J1/4257 ,  G03F7/0037 ,  G03F7/70416 ,  G06T17/00 ,  G06T17/10 ,  G06T17/20 ,  G05B2219/49013

    摘要： An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, information defining the object being structurally specified to reduce curl, stress and distortion in the ultimately formed object, the successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process. A stereolithographic distortion known as curl is defined, and several techniques to eliminate or reduce curl are described, including dashed line, bent line, secondary structure, rivets, and multi-pass techniques. In addition, a quantitative measurement of curl known as the curl factor, and a test part known as a quarter cylinder are described, which together can be used to measure the effectiveness of the above techniques in reducing curl.

    摘要翻译： 一种用于产生三维物体的改进的立体光刻系统，其通过在物体的横截面图形上形成，以形成在流体介质的选定表面上，该液体介质能够响应于通过撞击辐射，粒子轰击或者对其进行适当的协同刺激而改变其物理状态 化学反应，定义物体的信息在结构上被规定以减少最终形成的物体中的卷曲，应力和变形，代表对象的相应连续的相邻横截面的连续相邻层被自动形成并集成在一起， 从而在成形过程中从流体介质的基本上平坦的表面形成三维物体并从其中抽出三维物体。 定义了称为卷曲的立体光刻变形，描述了消除或减少卷曲的若干技术，包括虚线，弯曲线，二次结构，铆钉和多遍技术。 此外，描述了称为卷曲因子的卷曲的定量测量，以及被称为四分之一圆筒的测试部件，它们可以一起用于测量上述减少卷曲技术的有效性。

    Process of making a molded refractory article
    36.
    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
    37.
    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
    38.
    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
    40.
    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.