Rubber track pipelayer boom
    1.
    发明授权
    Rubber track pipelayer boom 失效
    橡胶履带式铺管机

    公开(公告)号:US5392936A

    公开(公告)日:1995-02-28

    申请号:US187689

    申请日:1994-01-26

    IPC分类号: B66C23/44 B66C23/62

    CPC分类号: B66C23/62 B66C23/44

    摘要: A pipelayer machine including a tractor with rubber mounted tracks and a boom supported by the tractor for lifting and lowering the pipe to be laid. The boom is pivoted on one side of the tractor, and the boom line winch is supported on the other side. The boom line crosses in front of the windshield of the tractor and there are specially designed boom line cable fairleads at each front corner of the cab to prevent damage to the windshield and to the driver within the cab.

    摘要翻译: 一种包括具有橡胶安装轨道的拖拉机和由拖拉机支撑的悬臂的管道铺设机,用于提升和降低待铺设的管道。 吊臂在拖拉机的一侧枢转,另一侧支撑起重臂绞盘。 起重臂线在拖拉机的挡风玻璃前方穿过,并且在驾驶室的每个前角处设有专门设计的吊杆线缆通道,以防止挡风玻璃和驾驶室内的驾驶员受损。

    New methods for the synthesis of alfentanil, sufentanil, and remifentanil
    3.
    发明申请
    New methods for the synthesis of alfentanil, sufentanil, and remifentanil 失效
    合成阿芬太尼,舒芬太尼和瑞芬太尼的新方法

    公开(公告)号:US20060149071A1

    公开(公告)日:2006-07-06

    申请号:US11362498

    申请日:2006-02-24

    IPC分类号: C07D211/56

    摘要: Synthetic pathways are disclosed for synthesizing derivatives or analogs of fentanyl. Specifically set out are pathways for synthesizing alfentanil, sufentanil and remifentanil. The disclosed methods require fewer steps and produce a greater yield of product than methods reported in the prior art.

    摘要翻译: 公开合成途径用于合成芬太尼的衍生物或类似物。 具体列出了合成阿芬太尼,舒芬太尼和瑞芬太尼的途径。 与现有技术中报道的方法相比,所公开的方法需要更少的步骤并产生更高的产率。