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    Pipe replacement
    31.
    发明公开
    Pipe replacement 失效
    管替换

    公开(公告)号：EP0190933A3

    公开(公告)日：1987-05-13

    申请号：EP86300800

    申请日：1986-02-06

    Applicant: PIRELLI CONSTRUCTION COMPANY LIMITED

    Inventor： Brough, Ian James ,  Martin, John ,  Holmes, Derek

    IPC: F16L55/10 ,  E03F03/06

    CPC classification number: E21B7/30 ,  F16L55/1658

    Abstract: A device for inserting within an existing pipe to shatter the existing pipe and replace it with a new pipe comprises a front portion 1 and a separate rear portion 2. The rear portion 2 includes a hydraulically operated hammer which is kept in engagement with a part of the front portion 1 by means of tension applied to the rear portion 2 through cables 9, 9A. The hydraulic hammer causes the front portion 1 to vibrate relative to the rear portion 2, and this vibration causes shattering of the existing pipe, whilst the tension applied through the cables 9, 9A ensures that the device is driven through the existing pipe.

    A device and method for removing irregularities in or enlarging an underground duct
    33.
    发明公开
    A device and method for removing irregularities in or enlarging an underground duct 失效
    设备和或扩大地下管线移除违规行为的方法。

    公开(公告)号：EP0146331A1

    公开(公告)日：1985-06-26

    申请号：EP84308596.0

    申请日：1984-12-11

    Applicant: I.P.D. SYSTEMS LIMITED

    Inventor： Yarnell, Ian Roland

    IPC: E03F3/06 ,  F16L55/18 ,  E21B7/28

    CPC classification number: F16L55/1658 ,  E03F3/06 ,  E03F2003/065 ,  E21B7/30

    Abstract: A device for removing irregularities in or enlarging a buried duct comprises a cylindrical housing corresponding approximately in diameter to the required diameter of the duct, an expandable shell comprising a plurality of tapered leaf members pivotally attached at their rear ends to the front of the housing, and remotely controllable drive means for moving the leaf members between contracted and expanded configurations. In operation, the apparatus is drawn through the duct with the leaf members in a contracted configuration in which they enter a portion of the duct of a diameter less than the required diameter. The drive means is operated to force the leaf members outwardly against the sides of the duct to expand the duct. The leaf members are then retracted and the apparatus is drawn forward. The apparatus is particularly intended for preparing damaged sewers prior to fitting an inner, lining pipe. By forming the shell in two sections, of which the nose is cylindrical in the contracted configuration and conical in the expanded configuration, the apparatus can move forward a distance approximately equal to the length of the leaf members with each expansion and contraction cycle, a continuous tension being applied to the chain drawing the device forward.

    Abstract translation: 一种用于去除不规则或扩大的埋入导管装置包括一个圆筒形壳体的直径大致对应于管道的所需直径，可膨胀外壳，其包括可枢转地附接在它们的后端到所述壳体的所述前面的锥形叶片构件的复数， 和远程可控驱动装置，用于移动地收缩和膨胀构型之间的叶成员。 在外科手术中，该装置是通过在收缩配置叶成员在他们输入的直径小于所要求的直径的导管的一部分的管道抽出。 驱动被操作手段迫使叶成员表面上看靠在管道的两侧以扩展所述管道。 叶成员然后缩回，并且所述装置被向前抽出。 该装置特别用于之前嵌合制备损坏下水道到内，衬管。 通过形成在两个部分的外壳，其中所述鼻是圆柱形的，在所述展开构型的收缩构型和锥形的，该装置可以向前移动约等于叶部件的长度与各膨胀和收缩周期中，连续的距离 张力被施加到链绘制装置前进。

    GEWINDEVERBINDUNG
    34.
    发明公开
    GEWINDEVERBINDUNG 审中-实审

    公开(公告)号：EP4403742A2

    公开(公告)日：2024-07-24

    申请号：EP24151693.9

    申请日：2024-01-12

    Applicant: TRACTO-TECHNIK GmbH & Co. KG

    Inventor： KLEIN, Tobias ,  WURM, Dieter ,  GÖCKE, Frank

    IPC: E21B17/042 ,  F16L15/00 ,  F16L15/06 ,  F16L55/165

    CPC classification number: E21B17/042 ,  F16L15/001 ,  F16L15/06 ,  F16L55/1658

    Abstract: Die Erfindung betrifft einen Gewindestecker an einem langgestreckten Körper für eine Gewindeverbindung mit einer Gewindebuchse, wobei der Gewindestecker ein konisches Außengewinde aufweist, bei dem ein Abschnitt einer Flanke des Außengewindes als Abschnitt einer Funktion darstellbar ist, die eine Krümmung aufweist, wobei der Abschnitt der Funktion über eine Höhe des mindestens 0,3-fachen der Gewindehöhe einen Winkel zu einer Verbindungslinie benachbarter Gewindegründe bzw. Gewindespitzen aufweist, der größer als 45° ist.

    PIPE BURSTING APPARATUS
    37.
    发明公开
    PIPE BURSTING APPARATUS 有权
    ROHRSPRENGUNGSVORRICHTUNG

    公开(公告)号：EP2646733A1

    公开(公告)日：2013-10-09

    申请号：EP11845860.3

    申请日：2011-12-02

    Applicant: Carter, Robert Ward ,  Ding, Robert M.J.

    Inventor： Carter, Robert Ward ,  Ding, Robert M.J.

    IPC: F16L55/18

    CPC classification number: F16L55/1658 ,  E21B7/205 ,  F16L55/18

    Abstract: Apparatus for replacing underground pipe is described, including a resistance plate from which a pair of hydraulic cylinders extend perpendicularly parallel with each other. The cylinders operate cyclically with a pulling bridge having a cable gripper to provide a sequence of pulling strokes to a cable pulling a mole. The mole pulls a replacement pipe behind it through the old pipe, which has been burst, slit, or expanded by the mole. The resistance plate is provided with a slot, and the cylinders are positioned to allow the mole to be pulled substantially completely into the apparatus. A holding bridge is releasably mounted spanning the slot in the reaction plate to position a second cable gripper for holding the cable on the return stroke of the pulling bridge. The holding bridge may be removed at the end of the pulling operation to accommodate the mole. A robust, lightweight construction is described.

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