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Match Document Document Title
8790041 Device for applying a push or pull action on tubes to be laid underground for overcoming water courses or obstacle of other type  
Device (1) for applying a push or pull action on tubes (100) to be laid in the ground for overcoming waterways or other types of obstacle, includes two push blocks (2, 2′), disposed parallel to...
8764344 Method for laying pipes and a machine for actuating the method  
A method for laying a pipe includes predisposing first and second releasable gripping devices for firmly gripping or releasing the pipe. The gripping devices are located along the longitudinal...
8702349 Pipe bursting apparatus  
Apparatus for replacing underground pipe is described, including a resistance plate from which a pair of hydraulic cylinders extend perpendicularly in parallel with each other. The cylinders...
8636446 Trenchless ducting apparatus frame  
An apparatus for moving an elongate component within or through a sidewall of a pit, including a lever arm having a handle at a first end and a gripping arrangement for gripping the elongate...
8628273 Method and apparatus for forcing a pipeline into or out of a borehole  
A pipe thrusting apparatus for inserting and removing a pipe from a borehole, comprising a collar configured to releasably grip the pipe; a support frame having at least one anchor securable to...
8596612 Bobbyjack  
An apparatus for lifting pipes in a pipe rack for the purpose of inspecting the point of contact with the supporting beam, and to remedy any damage caused by corrosion and wear and tear.
8533956 Rebar installation system and method of securing rebar  
A rebar installation system that uses rebar drive stations to secure rebar against the inner surface of a coil for securing thereto. The system may increase the ease and speed with which the rebar...
8413311 Device for connecting a string section with a pulling element which extends through the string section, and method for tensioning of string sections to form a string  
The invention relates to a device for connecting a string section to a pulling element which extends through the string section. The device includes a tilt lever support (100), at least one tilt...
8328482 Hydraulic foundation bolt tensioner  
A tensioner for tensioning foundation bolts generally used in securing large utility towers is provided. The tensioner generally comprises a hollow outer body through which the foundation bolt can...
8282077 Pole puller system  
A pole puller system comprising a base plate, a slide tube, and a slide. The system further comprises a hydraulic cylinder, a hydraulic fluid pump, and a pair of hydraulic hoses. There is also...
8240638 Rod assembly driver  
A rod assembly driver which is alternately acting in two opposing directions includes two opposing grip jaws for a rod assembly, which grip jaws are hingedly connected to one another in the form...
8231307 System and method for tightening string sections to form a string  
A tensioning device in particular for bracing string sections of a string includes a traction element, which extends between an abutment and an adapter on the rear end of the string. A linear...
8231306 Advancement of pipe elements in the ground  
The aim of the invention is to advance pipe elements (18) for constructing an elongate structure in a soft, stony, rocky, and/or monolithic ground. Said aim is achieved by determining the force of...
8075224 Method and device for reconstructing old underground pipes  
A method for in-situ repair of old underground pipes is disclosed. A breaking tool with a drive or a pipe section is pulled from a typical inspection shaft to the next inspection shaft (machine...
7926786 Post puller  
In some embodiments, a post puller may include one or more of the following features: (a) a frame capable of being coupled to a vehicle, (b) first and second post removal doors having an open side...
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...
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,...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
5219438 Post puller  
A post puller configured to grasp a post from the side. The post puller includes a first member having a main body portion and a generally U-shaped section extending from the main body portion and...
5211374 Post puller  
Disclosed is an apparatus for removing fence posts and related posts form the ground or other media. The invention is designed to be used primarily with tractors and any other mechanical devices...
5211509 Extraction of underground pipe  
Underground pipe is withdrawn in a continuous pipe portion without excavating the full length of the pipe by positioning in an opening at one end of the pipe portion a boom mounted on a vehicle....
5208967 Tube extraction apparatus  
Extraction apparatus 10 for tubes and like elongated articles comprises a tiltable gripping collar 64 of fixed internal dimension to engage and grip the article to be extracted. The collar has...
5206980 Apparatus for aligning ends of pipes  
A frame (20) which open at the bottom has supporting plates (22, 24, 26) and a bottommost support piece (28) connecting at least two support plates (22, 24, 26). The frame is designed to fit over...
5197713 Pipe pushing apparatus  
An apparatus including an elongate base having a first hydraulic cylinder to pivotally direct clamp members laterally of the base. A second hydraulic cylinder includes a cylinder rod and piston...
5192489 Device for opening the taphole of a shaft furnace  
A method for opening the taphole of a shaft furnace by withdrawing a rod, held in the hardened sealing compound of the taphole, includes engaging a coupling device onto the end of the rod,...

Matches 1 - 50 out of 260 1 2 3 4 5 6 >