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公开(公告)号：US06749976B2
公开(公告)日：2004-06-15
申请号：US10035230
申请日：2002-01-04
申请人： John A. Lawton , Chander P. Chawla
发明人： John A. Lawton , Chander P. Chawla
IPC分类号： G03F7028
CPC分类号： G03F7/0037 , B33Y70/00 , G03F7/027 , G03F7/032 , G03F7/038
摘要： This invention discloses compositions adapted to produce, through solid imaging means, excellent quality objects having material properties that simulate the look and feel of polypropylene articles.
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公开(公告)号：USRE37875E1
公开(公告)日：2002-10-15
申请号：US09711128
申请日：2000-11-13
申请人： John A. Lawton
发明人： John A. Lawton
IPC分类号： B29C3508
CPC分类号： C23C26/02 , B22F1/0003 , B22F3/1055 , B22F2998/00 , B29C64/165 , B29K2105/0064 , B29K2105/0088 , B33Y10/00 , B33Y70/00 , C22C12/00 , C22C21/00 , C22C28/00 , C23C26/00 , Y02P10/295
摘要： Solid objects are formed in an imagewise layering process in which components of a dispersion are homogenized to form an alloy. Imagewise exposure of the layers to radiation to form an alloy permits separation of the exposed, homogenized regions from non-exposed, non-homogenized regions. As each layer is formed and imagewise homogenized, contiguous layer regions are bonded together to form a homogenized, three-dimensional object which may be separated from surrounding dispersion.
摘要翻译： 固体物体形成在成像分层工艺中，其中分散体的组分被均质化以形成合金。 这些层对辐射进行成像曝光以形成合金允许将暴露的均匀化区域与未曝光的非均质化区域分离。 当形成每一层并成像均匀化时，连续的层区域结合在一起以形成均匀化的三维物体，其可与周围的分散体分离。
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3.发明授权Method and apparatus for fabricating three dimensional objects from photoformed precursor sheets 失效用于从上一张照片上制作三维物体的方法和装置
公开(公告)号：US5094935A
公开(公告)日：1992-03-10
申请号：US543388
申请日：1990-06-26
IPC分类号： B29C35/08 , B29C67/00 , B29K105/24 , G03F7/20
CPC分类号： B29C67/0074 , B29K2995/0073 , Y10S430/146
摘要： An imaging method and apparatus produces an integral three-dimensional object from a multiplicity of cross sectional portions of the object. The cross sectional portions correspond to photohardened portions of contiguous photoformed precursor sheets of a photohardenable liquid composition.
摘要翻译： 成像方法和装置从物体的多个横截面部分产生整体的三维物体。 横截面部分对应于可光硬化液体组合物的连续光致成形前体片的光硬化部分。
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公开(公告)号：US08639476B2
公开(公告)日：2014-01-28
申请号：US13385465
申请日：2012-01-31
CPC分类号： F41G7/007 , F41H11/02 , G01P15/18 , G01S7/003 , G01S13/723 , G01S13/878
摘要： A computer-implemented method is provided for generating the estimation of current position, velocity and acceleration state vectors and associated uncertainty estimation (covariance) of a boosting ballistic missile. The method includes constructing a state tensor of the projectile from a plurality of sensor measurements in Earth-Centered, Earth-Fixed (ECEF) coordinates; translating the state tensor to Cartesian coordinates as a transform state; determining a covariance matrix from the transform state; updating the transformed state as an updated transform state; and updating the covariance matrix as an updated covariance. The process can further include adjusting the covariance matrix by an approximate transition matrix and a process noise matrix. The noise matrix can be translated from a local noise matrix based on a propagation time-step, a scaling parameter, and a bias process noise level. A time-of-flight in the state tensor can be updated by smoothing from a launch event.
摘要翻译： 提供了一种计算机实现的方法，用于产生当前位置，速度和加速度状态向量的估计以及增强弹道导弹的相关不确定性估计（协方差）。 该方法包括从以地球为中心的固定（ECEF）坐标中的多个传感器测量结构构建射弹的状态张量; 将状态张量转换为笛卡尔坐标作为变换状态; 从变换状态确定协方差矩阵; 将变换状态更新为更新的变换状态; 并将协方差矩阵更新为更新的协方差。 该过程还可以包括通过近似转换矩阵和过程噪声矩阵来调整协方差矩阵。 可以基于传播时间步长，缩放参数和偏置过程噪声电平，从本地噪声矩阵转换噪声矩阵。 状态张量中的飞行时间可以通过从发射事件平滑来更新。
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公开(公告)号：US5391072A
公开(公告)日：1995-02-21
申请号：US829243
申请日：1992-02-03
申请人： John A. Lawton , Jerome T. Adams
发明人： John A. Lawton , Jerome T. Adams
IPC分类号： B29C35/08 , B29C67/00 , B29K105/24
CPC分类号： B29C67/007
摘要： An apparatus for fabricating integral three-dimensional objects from successive layers of photoformable compositions by exposing the layers of the composition through a semi-permeable film that allows creation of release coatings on the side of the film facing the composition.
摘要翻译： 一种用于通过将组合物的层暴露于半透膜以制备面向组合物的薄膜一侧上的剥离涂层来从连续的可光成形组合层制造整体三维物体的装置。
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6.发明授权
公开(公告)号：US5176188A
公开(公告)日：1993-01-05
申请号：US655688
申请日：1991-02-14
申请人： John A. Quinn , Roxy N. Fan , John A. Lawton
发明人： John A. Quinn , Roxy N. Fan , John A. Lawton
摘要： A method and composition for forming investment casting patterns wherein thermally-collapsible microspheres are incorporated into the pattern composition. The patterns can be made either by conventional pattern forming techniques or by solid imaging techniques. After investing the microsphere containing pattern in the ceramic shell, the pattern and shell are heated, causing a collapse of the microspheres and thereby preventing cracking of the shell. The shell is then heated to burn-out the remaining pattern material and fire the shell, thereby creating a mold.
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公开(公告)号：US5014207A
公开(公告)日：1991-05-07
申请号：US341517
申请日：1989-04-21
申请人： John A. Lawton
发明人： John A. Lawton
IPC分类号： G02F1/13 , B23K26/00 , B29C35/08 , B29C67/00 , B29K33/04 , B29K105/24 , B29K105/32 , C08F2/46 , C08F2/48 , C08L33/14 , G03C9/08 , G03F7/20 , G09B25/00
CPC分类号： B29C67/0066 , G09B25/00
摘要： In a solid imaging system, the beam of a relatively high-powered beam radiation source, and more particularly a laser, is modulated in accordance with its varying vector sweep speed so that substantially constant layer depth is maintained at all scanner speeds in a strip of photohardenable composition as it hardens and solidifies in response to the source's irradiation.
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公开(公告)号：US07183040B2
公开(公告)日：2007-02-27
申请号：US10623153
申请日：2003-07-21
申请人： Jens C Thies , Aylvin J. A. A. Dias , John A. Lawton , David L. Winmill , Jigeng Xu , Xiaorong You
发明人： Jens C Thies , Aylvin J. A. A. Dias , John A. Lawton , David L. Winmill , Jigeng Xu , Xiaorong You
CPC分类号： G03F7/027 , B29C64/106 , B33Y10/00 , B33Y70/00 , C08F283/06 , C08F283/10 , C08F290/06 , C08G59/68 , C08G65/18 , G03F7/0037 , G03F7/038
摘要： The invention relates to a radiation curable composition comprising relative to the total weight of the composition (A) 0–29 wt % of a cationically curable component having a linking aliphatic ester group, (B) 10–85 wt % of an epoxygroup containing component other than A, (C) 1–50 wt % of an oxetanegroup containing component, (D) 1–25 wt % of a multifunctional acrylate and a radical photoinitiator and a cationic photoinitiator.
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9.发明授权Radiation-curable resin composition and rapid prototyping process using the same 有权可辐射固化树脂组合物及其快速成型工艺公开(公告)号：US06811937B2
公开(公告)日：2004-11-02
申请号：US10091119
申请日：2002-03-06
申请人： John A. Lawton
发明人： John A. Lawton
IPC分类号： G03F7075
摘要： The present invention provides compositions comprising a cationically curable component and a substantially compatible free radical polymerizable component. Compatible free radical polymerizable components include alkoxylated free radical polymerizable components. Objects obtained by curing the present compositions, for instance by rapid prototyping the compositions, have an improved clarity.
摘要翻译： 本发明提供了包含阳离子可固化组分和基本相容的可自由基聚合组分的组合物。 兼容的自由基可聚合组分包括烷氧基化的可自由基聚合的组分。 通过固化本组合物获得的物体，例如通过快速成型组合物，具有改进的透明度。
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10.发明授权
公开(公告)号：US5474719A
公开(公告)日：1995-12-12
申请号：US655681
申请日：1991-02-14
申请人： Roxy N. Fan , Mario Grossa , John A. Lawton
发明人： Roxy N. Fan , Mario Grossa , John A. Lawton
CPC分类号： G03F7/0037 , B29C41/12 , B29C67/0062 , G05B2219/49013
摘要： A method and apparatus, where high viscosity liquids, including pseudoplastic, plastic flow, and thixotropic liquids, as well as gels, semi-solid, and solid materials are viscosity reduced during coating and allowed to increase in viscosity during imaging steps, for use in Solid Imaging applications. Use of these materials and the apparatus improves coating uniformity and final object tolerances.
摘要翻译： 一种方法和装置，其中包括假塑性塑料，塑性流动性和触变性液体以及凝胶，半固体和固体材料的高粘度液体在涂布期间粘度降低并且在成像步骤期间允许粘度增加，用于 固体成像应用。 使用这些材料和设备可以提高涂层的均匀性和最终的目标公差。
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