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111 条记录 (耗时 0.017 秒)

    Method for controlling polymerization rate of cyclic polycarbonate oligomers with pretreated catalyst
    61.
    发明授权
    Method for controlling polymerization rate of cyclic polycarbonate oligomers with pretreated catalyst 失效
    用预处理催化剂控制环状聚碳酸酯低聚物聚合速率的方法

    公开(公告)号：US4650852A

    公开(公告)日：1987-03-17

    申请号：US756213

    申请日：1985-07-18

    申请人： Thomas L. Evans ,  David A. Williams

    发明人： Thomas L. Evans ,  David A. Williams

    IPC分类号： C08G64/30 ,  C08G63/62

    CPC分类号： C08G64/30

    摘要： Cyclic polycarbonate oligomers are polymerized to linear polycarbonates by contact with a polycarbonate formation catalyst which has been modified by contacting the same with at least one diaryl carbonate, preferably diphenyl carbonate. Said modification decreases the polymerization rate or introduces an induction period into the polymerization reaction.

    摘要翻译： 环状聚碳酸酯低聚物通过与聚碳酸酯形成催化剂接触而聚合成线性聚碳酸酯，聚碳酸酯形成催化剂通过使其与至少一种碳酸二芳基酯，优选碳酸二苯酯接触来改性。 所述改性降低了聚合速率，或者在聚合反应中引入诱导期。

    Wheeled spraying device
    62.
    发明授权
    Wheeled spraying device 失效
    轮式喷涂装置

    公开(公告)号：US4545531A

    公开(公告)日：1985-10-08

    申请号：US514831

    申请日：1983-07-18

    申请人： David A. Williams

    发明人： David A. Williams

    IPC分类号： A63C19/08 ,  B65D83/16 ,  E01C23/22 ,  B05B1/28 ,  B67D5/64

    CPC分类号： B65D83/203 ,  A63C19/08 ,  B65D83/267 ,  E01C23/227

    摘要： A versatile manually operated striping device has a wheeled base and a handle for pushing the base. The base is in a block Y configuration which provide a U-shaped front end. The front wheels are mounted on separate axles that are extra long. A disk shaped mask is attached to the inboard side of each axle. For normal striping, a can tower is mounted on a moveable mounting bracket that is positioned so that the center of the bottom of the can tower is centrally located in said U-shaped front end. An aerosol spray can inserted in the can tower then sprays, the paint between the legs of the U to provide the normal working, when an actuator is activated. The moveable mounting bracket can be relocated to permit spraying behind the central transverse portion of the base or to the side. The mounting bracket includes a pluralty of holes in a vertical line that fit mounting studs that are attached to one side and to the rear of the can tower. The height of can tower, and then the height of the aerosol spray can is a measure of the spray width. Calibration marks may be located adjacent the holes to denote spray width. The disk masks may be positioned to provide a clean edge by adjusting the position of the axles, and should be coordinated with the spray height to obtain the best results.

    摘要翻译： 通用手动分条装置具有轮式基座和用于推动底座的手柄。 底座是一个提供U形前端的Y形结构。 前轮安装在分开的轴上，其长度很长。 盘形掩模附着在每个轴的内侧。 对于正常的条纹，罐塔安装在可移动的安装支架上，可移动的安装支架被定位成使得罐塔底部的中心位于所述U形前端的中心。 一个气溶胶喷雾器可以插入罐塔，然后喷射，当U执行器被激活时，U的两腿之间的油漆提供正常的工作。 可移动的安装支架可以重新定位，以允许在基座的中央横向部分或侧面喷涂。 安装支架包括垂直线中的多个孔，其适合安装在罐塔的一侧和后部的安装螺柱。 罐塔的高度，然后气溶胶喷雾罐的高度是喷雾宽度的度量。 校准标记可以位于孔附近以表示喷雾宽度。 磁盘掩模可以通过调整轴的位置来定位以提供干净的边缘，并且应与喷雾高度协调以获得最佳的结果。

    Tubing notcher
    63.
    发明授权
    Tubing notcher 失效
    管道开槽器

    公开(公告)号：US4194422A

    公开(公告)日：1980-03-25

    申请号：US947717

    申请日：1978-10-02

    申请人： David A. Williams

    发明人： David A. Williams

    IPC分类号： B23D21/02 ,  B26D3/10 ,  B26D3/14

    CPC分类号： B23D21/02 ,  Y10S83/917 ,  Y10T83/8773 ,  Y10T83/8845 ,  Y10T83/9444 ,  Y10T83/9447

    摘要： A tubing notcher which comprises a housing having a longitudinally slidable cutter assembly attached thereto. The cutter assembly is to be manually moved through an appropriate actuation means connected to the cutter assembly. The cutter assembly includes a cutter which has an arcuate cutting edge. A tube, the open end of which is to be notched, is to be located upon a guide means which is fixedly secured to the housing. The guide means is inclined slightly less than a right angle in respect to the longitudinal axis of movement of the cutter. The cutter is to be located within the open end of the tube and upon movement of the cutter the open end of the tube is appropriately notched.

    摘要翻译： 一种管道缺口器，其包括具有附接到其上的可纵向滑动的刀具组件的壳体。 切割器组件将被手动地移动通过连接到切割器组件的适当的致动装置。 切割器组件包括具有弓形切割边缘的切割器。 其开口端要被切口的管将位于固定地固定到壳体的引导装置上。 引导装置相对于切割器的纵向运动轴线倾斜稍小于直角。 切割器应位于管的开口端内，并且在切割器移动时，管的开口端适当地切口。

    CLAMP-ON FORK LIFT ATTACHMENT
    65.
    发明申请
    CLAMP-ON FORK LIFT ATTACHMENT 有权
    夹紧吊装附件

    公开(公告)号：US20140248111A1

    公开(公告)日：2014-09-04

    申请号：US13784185

    申请日：2013-03-04

    申请人： David A. Williams ,  Aaron Floyd

    发明人： David A. Williams ,  Aaron Floyd

    IPC分类号： B66F9/12 ,  E02F3/36

    CPC分类号： B66F9/12 ,  E02F3/962 ,  E02F9/26

    摘要： A clamp-on fork lift attachment having spaced tines which may be temporarily secured to the blade portion of a loader bucket used on equipment such as backhoe loaders and front end loaders includes a lifting plate, a leveling indicator, tie-down elements and a stabilizer bar connected between the spaced tines.

    摘要翻译： 具有间隔齿的夹紧式叉车附件可临时固定到用于诸如反铲装载机和前端装载机的设备上的装载机铲斗的叶片部分，其包括升降板，调平指示器，固定元件和稳定器 连接在间隔开的齿之间的条。