Method and device for holding and releasing a cable in a pipe splitter

    公开(公告)号:US10941896B2

    公开(公告)日:2021-03-09

    申请号:US16528976

    申请日:2019-08-01

    Inventor: Michael Tjader

    Abstract: A cable retention and release mechanism includes a cable gripping device including a cable passage. A cable extends through the cable passage. A cable gripping device collar is movably coupled around the cable gripping device. An outer cable gripping device surface is seated against a cable gripping device receiving inner surface preventing movement of the cable gripping device relative to the cable gripping device collar. The cable gripping device receiving inner surface clamps the cable gripping device on the cable and prevents sliding movement of the cable. A jack is movably coupled with the cable gripping device collar. In a first engaged position the jack is engaged against the cable gripping device proximal end. In a second engaged position the jack unseats the outer cable gripping device surface from the cable gripping device receiving inner surface and releases the clamping of the cable.

    Portable winch
    73.
    发明授权

    公开(公告)号:US10322917B2

    公开(公告)日:2019-06-18

    申请号:US15671553

    申请日:2017-08-08

    Inventor: Michael Tjader

    Abstract: A portable winch and method of use is shown. One advantage of winches shown includes an ability to lower a boom or boom sections into limited access exit pit for winching operations such as pipe bursting. Sectional boom designs shown provide the ability to easily raise and lower a boom large distances without the need for a single long boom. Selected winch designs shown include flexible inserts between the boom and the winch frame that help resist damage from unforeseen shifting of the device during operation. Designs and methods shown also include multiple pulleys on a boom end unit. Fasteners are shown that reduce build up of debris.

    Pipe replacement system
    74.
    发明授权

    公开(公告)号:US10253916B2

    公开(公告)日:2019-04-09

    申请号:US15859120

    申请日:2017-12-29

    Inventor: Michael Tjader

    Abstract: Pipe replacement devices, and systems are shown. Devices and systems may include jointed cutters and floating cutters to navigate difficult pipe replacement conditions. Devices and systems may also include replacement pipe with pre-installed supply hoses, such as lubricant supply and/or pneumatic supply hoses. Methods of pipe replacement are also described, including splitting old pipe and pulling in new pipe behind the equipment as splitting progresses.

    Frame for trenchless pipe replacement system and method

    公开(公告)号:US09791069B2

    公开(公告)日:2017-10-17

    申请号:US13722049

    申请日:2012-12-20

    Inventor: Michael Tjader

    CPC classification number: F16L1/028 B66D3/006 B66D3/08 F16L55/1658

    Abstract: A pipe replacement system and cable guide frame are shown. Configurations are shown that include plurality of guide pulleys attached to the cable guide frame to define a curved path between a pipe to be replaced and a cable pulling system. Configurations are shown where a pipe breaking tool is pulled over the plurality of guide pulleys for ease of removal after a replacement operation. Configurations are also shown that include a stationary splitter adjacent to the cable pulling system to prevent jamming of the cable pulling system.

    PIPE SPLITTING APPARATUS WITH CABLE ENGAGEMENT SYSTEM

    公开(公告)号:US20170219156A1

    公开(公告)日:2017-08-03

    申请号:US15490988

    申请日:2017-04-19

    Inventor: Michael Tjader

    CPC classification number: F16L55/18 F16L55/1658

    Abstract: Pipe splitting apparatuses and systems including a replaceable blade, and methods therefor, are provided. In various examples, a cable retention and release mechanism is configured to releasably engage a cable and includes one or more segments of a pipe splitting apparatus including a cable passage. A segmented collet includes tapered segments and is disposed within a tapered portion of a cable passage of the one or more segments. Channel surfaces of the tapered segments together form a cable channel through the segmented collet. The cable channel is configured to widen in a disengaged position of the segmented collet and narrow in an engaged position of the segmented collet. A spring is disposed within the spring pocket of the one or more segments to bias the segmented collet distally in the engaged position.

    CABLE PULLER AND METHOD
    78.
    发明申请

    公开(公告)号:US20170089501A1

    公开(公告)日:2017-03-30

    申请号:US15273294

    申请日:2016-09-22

    Inventor: Michael Tjader

    CPC classification number: F16L55/1658 F16L55/18 H02G1/08 H02G1/081

    Abstract: A cable puller and associated methods are shown. Useful example methods include pipe bursting using cable pullers as shown. Cable pullers and methods shown provide a mechanical advantage that increases an amount of cable pulled in one cycle. Selected examples are shown that include a pulley located on a distal end of a moving portion of an extending and contracting beam. The pulley and the mechanical advantage it supplies helps to improve the efficiency of the cable puller and reduce manufacturing cost of the cable puller.

    Pipe splitting apparatus with replaceable blade

    公开(公告)号:US09470353B2

    公开(公告)日:2016-10-18

    申请号:US14091134

    申请日:2013-11-26

    Inventor: Michael Tjader

    Abstract: Pipe splitting apparatuses and systems including a replaceable blade, and methods therefor, are provided. In various examples, a pipe splitting apparatus includes an outer surface including a recess. A blade including a portion is disposed within the recess. A hardenable material is disposed within the recess. The hardenable material is configured to flow upon application to fill empty space within the recess and at least partially around the portion of the blade disposed within the recess. The hardenable material is further configured to harden after application to secure the portion of the blade within the recess and fix the blade to the pipe splitting apparatus.

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