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24 条记录 (耗时 0.033 秒)

    Molding method, apparatus, and device including use of powder metal technology for forming a molding tool with thermal control elements
    6.
    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。

    Method of and apparatus for making a three-dimensional product by stereolithography
    9.
    发明授权
    Method of and apparatus for making a three-dimensional product by stereolithography 失效
    通过立体光刻制造三维产品的方法和装置

    公开(公告)号：US5174931A

    公开(公告)日：1992-12-29

    申请号：US515479

    申请日：1990-04-27

    申请人： Thomas A. Almquist ,  Borzo Modrek ,  Paul F. Jacobs ,  Charles W. Lewis ,  Mark A. Lewis ,  Abraham Liran

    发明人： Thomas A. Almquist ,  Borzo Modrek ,  Paul F. Jacobs ,  Charles W. Lewis ,  Mark A. Lewis ,  Abraham Liran

    IPC分类号： B29C41/12 ,  B29C67/00 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12

    CPC分类号： B29C67/0066 ,  B29C41/12 ,  G01F23/2921 ,  G01F23/366 ,  G05D9/12 ,  Y10T156/17

    摘要： Apparatus and methods for stereolithographically forming a three-dimensional object includes a vessel for holding a building material and a smoothing member for forming a uniform coating over a previously formed layer of the object. The smoothing member has a plurality of blades. The smoothing member is swept over a previously formed layer of the object, in at least two directions. Different clearances between the lower surface of the smoothing member and the upper surface of the previously formed layer are used to provide a uniform coating for a subsequent layer over the previously formed layer. The sweeping velocity of the smoothing member can be varied. Retractable needles are attached to the smoothing member for adjusting a blade gap between the lower surface of the smoothing member and the surface of the building material.

    摘要翻译： 用于立体成像形成三维物体的装置和方法包括用于保持建筑材料的容器和用于在物体的先前形成的层上形成均匀涂层的平滑构件。 平滑部件具有多个叶片。 平滑部件在至少两个方向上扫过物体的先前形成的层。 使用平滑构件的下表面和先前形成的层的上表面之间的不同间隙为先前形成的层上的后续层提供均匀的涂层。 平滑部件的扫掠速度可以变化。 可伸缩针附接到平滑构件，用于调节平滑构件的下表面与建筑材料的表面之间的叶片间隙。

    Laser apparatus
    10.
    发明授权
    Laser apparatus 失效
    激光设备

    公开(公告)号：US4225826A

    公开(公告)日：1980-09-30

    申请号：US875111

    申请日：1978-02-03

    申请人： Owen Lewis ,  Stanley Refermat ,  Thomas A. Almquist

    发明人： Owen Lewis ,  Stanley Refermat ,  Thomas A. Almquist

    IPC分类号： H01S3/07 ,  H01S3/092

    CPC分类号： H01S3/093 ,  H01S3/07 ,  H01S3/0621 ,  H01S3/0623

    摘要： An active mirror laser amplifier is described having a slab of Nd:glass which is optically pumped through the back face while the laser beam enters the slab through the front face and is reflected by a coating on the back face which reflects the laser beam while transmitting the pumping radiation. The laser beam is amplified as it moves toward the back face and after reflection from the back face as it propagates out and is emitted from the front face. The front face has an anti-reflection coating for the laser beam which coating reflects the pumping radiation. The storage efficiency of the laser is thereby increased and the temperature gradients in the slab are reduced (viz., the temperature profile is smoothed such that distortion of the slab is reduced and high power operation at high repetition rates of the laser pulse is obtainable).

    摘要翻译： 描述了一种主动式反射镜激光放大器，其具有通过背面光学泵浦的Nd：玻璃板，同时激光束通过前表面进入板坯，并被反射激光束的背面上的涂层反射，同时传输 泵送辐射。 当激光束向后表面移动并且在背面从背面反射之后被放大，并从前表面发射。 前面具有用于激光束的防反射涂层，该涂层反映了泵送辐射。 因此激光器的存储效率由此增加，并且板坯中的温度梯度减小（即，平滑温度曲线，使得板坯的变形减小，并且可以获得激光脉冲的高重复率的高功率操作） 。