Methods for the preparation of reinforced three-dimensional bodies
    7.
    发明授权
    Methods for the preparation of reinforced three-dimensional bodies 失效
    制备增强三维体的方法

    公开(公告)号:US5906863A

    公开(公告)日:1999-05-25

    申请号:US638609

    申请日:1996-04-26

    摘要: The present invention generally relates compositions and methods for the preparation of three-dimensional bodies, e.g., green bodies, ceramic-loaded green bodies, and polymer matrix composites, by the controlled, sequential deposition of layers of material upon one another. The method for preparing a green body comprises depositing a liquid composition having a viscosity of at least about 10 poise and comprising thermally-polymerizable components onto a base in a predetermined pattern to form a layer of the liquid composition on the base. Subsequently, at least one further layer of the liquid composition is deposited on a previously-formed layer in a predetermined pattern to form a multi-layered intermediate and, then, the multi-layered intermediate is heated to cause the thermally-polymerizable components to polymerize, providing the three-dimensional green body. Another method of the present invention provides a method for reinforcing a green body with fibers. More than simply reinforcing the body, however, this particular aspect of the present invention allows the alignment of reinforcing fibers in the body to be controlled. A further aspect of the present invention is the discovery of a novel composition which may be used to provide a three-dimensional polymer matrix composite using free-formation methods. This composition comprises at least one urethane acrylate oligomer, at least one vinyl monomer, and has a viscosity of at least 10 poise.

    摘要翻译: 本发明总体上涉及通过将材料层彼此控制地连续沉积来制备三维体(例如生坯,陶瓷负载的生坯和聚合物基体复合材料)的组合物和方法。 制备生坯的方法包括将具有至少约10泊的粘度的液体组合物沉积在预定图案中的基于热可聚合组分的基底上以在基底上形成液体组合物层。 随后,至少另外一层液体组合物以预定图案沉积在预先形成的层上以形成多层中间体,然后加热多层中间体以使可热聚合组分聚合 ,提供三维绿体。 本发明的另一种方法提供了用纤维增强生坯的方法。 然而,不仅仅是加强身体,本发明的这个特定方面允许在身体中加强纤维的对准被控制。 本发明的另一方面是发现可用于使用自由形成方法提供三维聚合物基质复合材料的新型组合物。 该组合物包含至少一种氨酯丙烯酸酯低聚物,至少一种乙烯基单体,并且具有至少10泊的粘度。

    Unmanned vehicle
    8.
    发明申请
    Unmanned vehicle 有权
    无人车

    公开(公告)号:US20060074557A1

    公开(公告)日:2006-04-06

    申请号:US11011001

    申请日:2004-12-13

    IPC分类号: G01C21/26

    摘要: Methods and apparatuses provide surveillance of a convoy. At least one unmanned aerial vehicle (UAV) obtains images around the convoy's position to provide information about potential hostile activity while the UAV follows a generally curvilinear path around the convoy as instructed by one of the convoy vehicles. Path planner algorithm software is executed by the controlling convoy vehicle in which position and velocity information regarding the unmanned aerial vehicle and the convoy are processed to determine values of control variables. The determined values are sent to the unmanned aerial vehicle over a wireless communications channel. The path of the surveillance vehicle may be changed in order to provide evasive measures to avoid an attack on the surveillance vehicle by an adversary.

    摘要翻译: 方法和设备对车队进行监视。 至少一架无人驾驶飞行器(UAV)获取围绕车队位置的图像,以提供关于潜在敌对行为的信息,而无人机按照车队车辆指示的方式沿着车队周围的大致曲线路径。 路径规划器算法软件由控制车队车辆执行,其中处理关于无人机和车队的位置和速度信息以确定控制变量的值。 所确定的值通过无线通信信道发送到无人驾驶飞行器。 监视车辆的路径可能会改变,以便提供回避措施,以避免对手对监控车辆的攻击。

    Methods for the preparation of three-dimensional bodies
    9.
    发明授权
    Methods for the preparation of three-dimensional bodies 失效
    三维体的制备方法

    公开(公告)号:US5932290A

    公开(公告)日:1999-08-03

    申请号:US938039

    申请日:1997-09-26

    IPC分类号: B29C41/22 B29C67/00 B05D3/00

    摘要: The present invention generally relates compositions and methods for the preparation of three-dimensional bodies e.g., green bodies, ceramic-loaded green bodies, and polymer matrix composites by the controlled, sequential deposition of layers of material upon one another The method for preparing a green body comprises depositing a liquid composition having a viscosity of at least about 10 poise and comprising thermally-polymerizable components onto a base in a predetermined pattern to form a layer of the liquid composition on the base. Subsequently, at least one further layer of the liquid composition is deposited on a previously-formed layer in a predetermined pattern to form a multi-layered intermediate and, then, the multi-layered intermediate is heated to cause the thermally-polymerizable components to polymerize, providing the three-dimensional green body. Another method of the present invention provides a method for reinforcing a green body with fibers. More than simply reinforcing the body, however, this particular aspect of the present invention allows the alignment of reinforcing fibers in the body to be controlled. A further aspect of the present invention is the discovery of a novel composition which may be used to provide a three-dimensional polymer matrix composite using free-formation methods. This composition comprises at least one urethane acrylate oligomer, at least one vinyl monomer, and has a viscosity of at least 10 poise.

    摘要翻译: 本发明总体上涉及用于制备三维体的组合物和方法,例如生坯,陶瓷负载的生坯和聚合物基体复合材料,通过彼此层压材料的受控顺序沉积。制备绿色的方法 包括沉积具有至少约10泊的粘度的液体组合物,并且以预定图案将热可聚合组分包含在基底上以在基底上形成液体组合物层。 随后,至少另外一层液体组合物以预定图案沉积在预先形成的层上以形成多层中间体,然后加热多层中间体以使可热聚合组分聚合 ,提供三维绿体。 本发明的另一种方法提供了用纤维增强生坯的方法。 然而,不仅仅是加强身体,本发明的这个特定方面允许在身体中加强纤维的对准被控制。 本发明的另一方面是发现可用于使用自由形成方法提供三维聚合物基质复合材料的新型组合物。 该组合物包含至少一种氨酯丙烯酸酯低聚物,至少一种乙烯基单体,并且具有至少10泊的粘度。