公开(公告)号：US20040062596A1

公开(公告)日：2004-04-01

申请号：US10259337

申请日：2002-09-27

申请人： Star Pipe Products, Inc.

发明人： Van T. Walworth ,  David B. Hook ,  Mark Bowsher ,  Ashish Jain

IPC分类号： B25G003/20

CPC分类号： F16L25/065 ,  Y10T403/5741 ,  Y10T403/7062

摘要： A preferred joint restraint includes a dampening force and a restraining force to control relative movement between a pad and gland and between the gland and bolt, respectively. The preferred restraint includes a gland, pads, and bolts. Preferably, a flexible member disposed in the pad selectively provides the dampening and retaining force. A preferred joint restraint also includes a pad and a bolt that coact to provide a controlled wedging action. The wedging action supplies supplemental tooth penetration and/or enhanced clamping force that stabilizes a shifting tubular member (pipe). A preferred tooth arrangement for a restraint pad produces an intermittent penetration pattern in the pipe. A preferred spacing member for a restraint tunes a clamping force generated by the restraint to accommodate variations in pipe geometry and/or materials. A preferred restraint is arranged according to a method that uses pipe expansion to provide an enhanced gripping action.

摘要翻译： 优选的关节限制包括阻尼力和抑制力，以分别控制垫和压盖之间以及压盖和螺栓之间的相对运动。 优选的约束包括压盖，垫和螺栓。 优选地，设置在垫中的柔性构件选择性地提供阻尼和保持力。 优选的联合约束还包括与提供受控的楔入动作共同作用的垫和螺栓。 楔入动作提供补充牙齿穿透和/或增强的夹持力，其使换档管状构件（管）稳定。 用于约束垫的优选的齿布置在管中产生间歇的穿透图案。 用于约束的优选间隔构件调节由约束产生的夹紧力以适应管道几何形状和/或材料的变化。 根据使用管道膨胀以提供增强的夹持动作的方法来布置优选的约束。