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| Number | Title | Issue Date |
| 7392974 | Rope/wire puller A rope/wire pulling device designed to provide maximum pulling pressure by the use of two handles and a non-slip ratcheting clutch which grasps the rope or wire tighter as additional pulling pressure is applied. ... | 07/01/2008 |
| 7305756 | Tube extracting device The invention is related to a tube extracting device for compressing a tube end extended from a conventional drum of a boiler to remove the tube. The device includes a housing comprised of an outer clamping plate and an inner clamping plate pivotally connected by a ... | 12/11/2007 |
| 7261152 | Cable drawn snubbing apparatus A cable drawn snubbing apparatus includes a first track and a second track in parallel spaced relation. A carriage extends between and engages the first track and the second track. Pipe engaging slips are carried by the carriage. Upper cables extend from the carriag... | 08/28/2007 |
| 7243999 | Integrated truck body backpack An integrated dump body storage compartment is provided. The integrated dump body storage compartment includes a dump body and a framed assembly. The framed assembly further includes at least one access opening and has its longitudinal axis mounted transverse to the... | 07/17/2007 |
| 7231984 | Gripping insert and method of gripping a tubular The present invention generally provides an insert for a clamping device or gripping apparatus for conducting translational forces and/or torque into a moveable object, such as a tubular, casing, liner, pipe, expandable tubular, tubing, drill pipe. In one aspect, th... | 06/19/2007 |
| 7228913 | Tubular clamp apparatus for top drives and methods of use An apparatus for releasably clamping and holding a member for wellbore operations, the apparatus having a main body, two opposed clamping apparatuses in the main body, the two opposed clamping apparatuses spaced-apart for selective receipt therebetween of a member t... | 06/12/2007 |
| 7156585 | Method and apparatus for drawing a mole through a composition A method of advancing a mole to define a passageway through a composition between first and second locations spaced from each other a substantial first distance. The method includes the steps of: attaching the mole to a cable; providing a support; providing a cable ... | 01/02/2007 |
| 7140806 | Rod pulling and pushing machine for pipe bursting A rod pushing and pulling machine includes at least one hydraulic cylinder having a front end thereof engagable with a reaction surface at an entry opening of a existing pipeline or borehole, a spindle assembly, and a dual vise assembly. The spindle assembly include... | 11/28/2006 |
| 7121049 | Stake-pulling device A device that is used to pull a stake from a newly poured concrete slab. This device allows for attachment to a concrete pole, a tool that is commonly possessed and used by most concrete contractors. It contains a flexible loop that is used for the removal of stakes... | 10/17/2006 |
| 7117938 | Drill pipe connecting and disconnecting apparatus Drilling rig apparatus for connecting and disconnecting well pipe at a drilling rig. A remotely controlled power wrench assembly is mounted on a remotely controlled lifting mechanism attached to a base spaced about the well axis on the rig floor. The wrench assembly... | 10/10/2006 |
| 7117948 | Convertible jack A snubbing unit for running and retrieving a string of tubing into a well under pressure selectively operates in a stand alone mode and a rig assist mode. The unit has a lower frame for mounting during the stand alone mode on a snubber blowout preventer. Stationary ... | 10/10/2006 |
| 7097388 | Grout injecting/structure anchoring system A grout injecting/structure anchoring system has a support bracket with a horizontal portion and a pair of threaded recesses and a sleeve there between. A grout tube has a plurality of apertures along its length. A lower cross brace is positioned above the sleeve an... | 08/29/2006 |
| 7073602 | Tubing injector Apparatus for injecting coiled tubing into a bore comprises a rotatable housing (28, 29) having an axis along which coiled tubing is to be translated. A set of rolling elements (12, 14) is rotatably mounted in the housing (28, 29), each rolling ... | 07/11/2006 |
| 7025536 | Tandem apparatus for bursting and replacing pipe A tandem rod or cable apparatus for bursting and replacing pipe, which includes a frame, two sets of oppositely-disposed hydraulic cylinders having piston rods, each of which pairs of piston rods are attached to a yoke, with a gripping element provided in each yoke ... | 04/11/2006 |
| 7017962 | Stake removal tool A stake removal tool, in one embodiment, includes a link bar (105, 405), a first handle (110, 410) and a second handle (120, 420) coupled to the link bar, a first gripper (130) attached to the first handle, and a second gripper (140 | 03/28/2006 |
| 6971821 | Grout injecting/structure anchoring system A grout injecting/structure anchoring system has a support bracket with a horizontal portion and a pair of threaded recesses and a sleeve there between. A grout tube has a plurality of apertures along its length. A lower cross brace is positioned above the sleeve an... | 12/06/2005 |
| 6857619 | Post puller system A post puller system for efficiently removing posts from a ground surface. The post puller system includes a frame attachable to a loader of a tractor, an extended structure extending from the frame, a first jaw pivotally attached to the extended structure, an actua... | 02/22/2005 |
| 6755593 | Pipe replacement method and rotary impact mechanism for pipe bursting An impactor for use with a directional boring machine having a drill string connectable to the impactor for pulling the impactor through an existing pipeline uses rotation of the drill string to drive an internal striker. The internal striker delivers impacts in the... | 06/29/2004 |
| 6669172 | Post puller A post puller is provided which is useable with a front end loader to pull a post out of the ground in a manner described herein. The post puller includes a pipe and a pair of tooth members integrally connected to the interior surface of the pipe at oppos... | 12/30/2003 |
| 6641347 | Pole extractor A pole extractor having a base and a hydraulically operable cylinder and ram assembly. The base is coupled to an attachment means to define a slot for accepting a mobile positioning device. The cylinder and ram assembly have a proximal end coupling said a... | 11/04/2003 |
| 6588983 | Trenchless pipe replacement apparatus and technique The apparatus and technique of the invention constitutes a hydraulic jack system for pushing sections of new pipe which, in turn, pushes a sleeve-cone expander arrangement to break up the old pipe and define a straight path for the new pipe. Apparatus is ... | 07/08/2003 |
| 6468002 | Foundation supporting and lifting system and method A system and method for supporting a pier-supported structure includes a pier support assembly for engaging a pier of the structure. The system also includes a guide assembly coupled to the pier support assembly and a piling extending through the guide as... | 10/22/2002 |
| 6386282 | Safety switching system for clamping devices for pipes The invention relates to a safety switching system for a clamping device, provided with clamping wedges and operable by a flowing medium for holding and/or lowering or raising a pipe string, with which a borehole is lined in order to support the rock and ... | 05/14/2002 |
| 6357967 | Apparatus for bursting and replacing pipe An apparatus for bursting and replacing gas, water, sewer or other underground utility pipes. In a preferred embodiment the apparatus is characterized by a specially-designed rod-pulling device which is situated typically in a manhole or excavation, at on... | 03/19/2002 |
| 6260270 | Method and apparatus for short-term relining or construction of blast furnace Method and apparatus for short-term relining or construction of a blast furnace uses a grounding apparatus for grounding of ring-shaped blast furnace segments having shells and a casting floor present as a blast furnace floor for transferring the ring-sha... | 07/17/2001 |
| 6206345 | Pipe pusher An apparatus for pushing tubular members along a tunnel, the apparatus comprising a frame shaped to receive a tubular member therein and having an open end shaped to receive the tubular member therethrough, and a pushing element mounted on and displaceabl... | 03/27/2001 |
| 6149349 | Apparatus and method for extracting and replacing buried pipe A pipe/pulling frame is fitted to the tool end of a movable boom of an excavator, preferably via a quick-attach coupling. The boom first positions the frame in and out of the pit and then secondly holds the frame against twisting movement in the pipe-extr... | 11/21/2000 |
| 6129486 | Pipe pulling and pushing apparatus and method A pipe pulling and pushing apparatus and method of operation, which apparatus includes a spring-loaded wedge device seated in a driving apparatus and fitted to a rod or pipe for forcing the rod or pipe beneath a road, pipeline or other barrier where trenc... | 10/10/2000 |
| 6056271 | Post puller A post puller and a method of use are described herein. The method of the invention entails lowering a collar over a top end of the post. The collar is carried by a suitable frame. The frame is attached to a bucket which forms a portion of a front end loa... | 05/02/2000 |
| 6055691 | Method of mounting and tensioning a freely tensioned tension member and device for carrying out the method A method of mounting and tensioning a freely tensioned tension member, particularly a stay cable for a cable-stayed bridge, and a device for carrying out the method, wherein the polyethylene casing of each individual strand is removed during the tensionin... | 05/02/2000 |
| 5988274 | Method of and apparatus for inserting pipes and tools into wells A snubbing configuration for inserting a pipe and/or a tool assembly on a pipe into a live well head employs a telescopic cylinder, e.g. a telescopic snubbing jack, between an upper BOP, e.g. an annular BOP, and a lower BOP, e.g. a double-gate BOP, in pla... | 11/23/1999 |
| 5765806 | Method of dislodging a stuck drift gage A drift gauge sticker remover comprises a base, a frame mounted on the base and extending into the pass line of a powered drift gauge rod. The frame has a slot in which is mounted a pin supporting the top ends of a pivoted front plate and a back plate in ... | 06/16/1998 |
| 5653290 | Rotating rod string position adjusting device The invention relates to a method and a device for longitudinally adjusting the position of a rotating rod string, having an upper end and a lower end, in a production well of the type having a downhole rotary pump connected to the lower end of the rod st... | 08/05/1997 |
| 5640748 | Pipeline assembling apparatus for use with large diameter pipes A pipeline assembling apparatus used in assembling together large diameter PVC pipes into a pipeline includes a gripper assembly having an upright member for placement adjacent a side of an end of a second pipe to be inserted into an adjacent end of a fir... | 06/24/1997 |
| 5553979 | Pull cap for attachment to a probe rod A pull cap is positioned about the exposed end of a probe rod and engages a pulling device to remove the probe rod from the ground. The pull cap has a first body section with a first concave surface disposed adjacent one end of the first section and for e... | 09/10/1996 |
| 5524867 | Drift gauge rod pushing device A drift gauge rod pushing device comprises a base, a frame mounted on the base and extending into the pass line of a powered drift gauge rod. The frame has a slot in which is mounted a pin supporting the top ends of a pivoted front plate and a back plate ... | 06/11/1996 |
| 5492437 | Self-aligning devices and methods for lifting and securing structures The present invention provides novel lifting devices and methods for lifting foundations and slabs. One or more power cylinders is pivotally linked to a pier and to a foundation bracket assembly. The pivotal linkage results in self-alignment between the l... | 02/20/1996 |
| 5392866 | Tractor steel post driver A tractor steel post driver comprising an elongated driving assembly having an upper cylindrical pipe and a lower pipe, a bracket formed of two small parallel plates, each of the plates having a free end, each of plates having an aperture therethrough wit... | 02/28/1995 |
| 5303783 | Horizontal earth bore tool The rig has a base frame, with powered ground screw anchors, trunnion attached to a tiltable top frame equipped with pipe handling rollers, pipe clamp, power tongs, and crosshead mounted swivel arranged to slide along the frame to transfer axial forces to... | 04/19/1994 |
| 5282696 | Pneumatic ram pipe replacement An adapter on the nose of a pneumatic ram engages the end of an underground pipe and under the action of the ram drives the pipe ahead of it for removal. The adapter has a frusto-conical channel at the larger diameter end of a frusto-conical region of a n... | 02/01/1994 |
