Entries |
Document | Title | Date |
20080205994 | Drill bit and a single pass drilling apparatus - A drill bit and a single pass drilling apparatus are disclosed. The one-piece drill bit is rotatable about a drilling axis and has a connection portion, adapted to be rigidly connected to a drill steel, a pilot part and a reamer part. The reamer part has a leading and at least one trailing first rock machining means disposed on one side of the pilot part within a sector defined by sector angle θ. At least one of the trailing first rock machining means is axially spaced from the leading first rock machining means in the direction toward the trailing end of the drill bit. | 08-28-2008 |
20080240866 | AUTOMATED, LOW PROFILE DRILLING/BOLTING MODULE WITH COLLARING - A module is for use in drilling a borehole in face of a mine passage using a drilling element and installing a bolt in the borehole once formed. The module may include a bolt holder for holding a plurality of bolts and a drilling element holder for holding a plurality of different drilling elements. A manipulator moves along an arcuate path between the bolt and drilling element holders to deliver the respective components to a drill head positioned along the arcuate path. The drill head may also slide relative to the mast in two different directions, and includes a drill guide for determining the location of the face to be worked. Related aspects of control of the module and methods are disclosed. | 10-02-2008 |
20080247828 | Cable Bolt - A cable bolt ( | 10-09-2008 |
20080260471 | Mine roof bolt with resin control surface - A resin bonded mine roof bolt having an elongated rod with a first end, a second end, and a resin control surface positioned on the rod between the rod first and second ends. The resin control surface has a channel extending along the length of the bolt for distributing resin and interrupted spiral threads for mixing resin. When installed in a mine roof bore hole with curable resin, the resin control surface mixes the resin and partially fills the bore hole to minimize the amount of resin needed to anchor the bolt. | 10-23-2008 |
20090041548 | Ground anchor - An earth anchor of the pivoting type having an essentially cylindrical body, a blind bore extending thereinto from a trailing axial end of the cylindrical body and a leading edge projecting from a leading end of the body, the leading edge being formed as a rounded surface adapted for penetration through reinforcement paths while minimizing severing of the strands of the mat. | 02-12-2009 |
20090041549 | Earth anchor - An earth anchor of the pivoting type having an essentially cylindrical body, a blind bore extending thereinto from a trailing axial end of the cylindrical body and a leading edge projecting from a leading end of the body, the leading edge being formed as a rounded surface adapted for penetration through reinforcement paths while minimizing severing of the strands of the mat. | 02-12-2009 |
20090074516 | Self Drilling Rock Bolt - The present invention relates to a self drilling rock bolt which may be used in mining applications. | 03-19-2009 |
20090074517 | End Coupling for a Rock Bolt - An end coupling | 03-19-2009 |
20090180839 | Concrete Anchor Insertion Device and Method - A device for mounting anchors having a mounting end for positioning within pre-drilled apertures formed in concrete or cement and having a threaded end projecting forward of the pre-drilled apertures when positioned therein. The device features a continues shaft that is adapted to engage with a hammer drill on a first end, and the threaded portion of the anchor on the opposite end to allow the hammer drill to force the anchor into its aperture in the concrete. A nut for the threaded portion is rotatable for engagement by a second component coaxially engaged with the shaft. The device allows for both hammering the anchor into its aperture and tightening the nut, without removing the device from its engagement with the anchor. | 07-16-2009 |
20090191005 | GROUND ANCHOR OR ROCK ANCHOR WITH AN ANCHOR TENSION MEMBER COMPRISED OF ONE OR MORE INDIVIDUAL ELEMENTS WITH CORROSION-PROTECTED ANCHOR HEAD DESIGN - A ground anchor or rock anchor is provided that includes an anchor tension member composed of one or more individual elements, such as steel bars, steel wires, or steel wire strands. While the anchor tension member is intended to be introduced into a drilled hole and anchored there, the anchoring of the anchor tension member at the exposed end of the drilled hole is achieved with the aid of anchor head. To this end, the anchor head comprises a support element to bear directly or indirectly against the underlying rock or substratum, and an anchoring component for tensioning the individual elements, which can be brought into a frictional connection with the individual elements while bearing against the support element. In addition, a cap, which extends around the anchoring component and the ends of the individual elements, protects the exposed end of the anchor head. For secure attachment of the cap to the rest of the anchor head, between the support element and anchoring component, a connecting element is arranged that has a first closure component at its circumferential side, and has a second closure component of complementary shape on its circumferential side, wherein the first and second closure component work together to produce a frictional connection between the cap and connecting element. | 07-30-2009 |
20090285638 | One-piece drill bit for single-pass anchor bolting and single pass drilling apparatus - The present invention relates to a drill bit and a single pass drilling apparatus. The one-piece drill bit has a connection portion, adapted to be rigidly connected to a drill steel, a pilot part and a reamer part. The pilot part has first rock machining means. The reamer part has a first center line and second rock machining means. The second rock machining means is provided axially between said connection portion and said first rock machining means and to one side of the pilot part. The drill bit has a rotational direction. A side of the pilot part facing away from the reamer part is provided with a wear resistant means. The wear resistant means is integral with the first rock machining means. | 11-19-2009 |
20090297278 | FIBER REINFORCED PLASTIC DRILLING ANCHOR - The invention relates to a fiber-reinforced plastic drilling anchor comprising an axial bore that runs along the entire length thereof, fibers which extend in the longitudinal direction thereof, and fibers that extend at an angle to the longitudinal direction thereof. A first layer of fibers that extend at an angle to the longitudinal direction of the drilling anchor is surrounded by a second layer of fibers extending in the longitudinal direction of the drilling anchor, and the second layer of fibers is surrounded by a third layer of fibers extending at an angle to the longitudinal direction of the drilling anchor. The inventive drilling anchor further comprises a thread which extends along the entire length thereof and is molded into at least one outer fiber layer of the drilling anchor. The invention also relates to a method for producing such a drilling anchor. | 12-03-2009 |
20090297279 | ROCK BOLT AND AN ANCHORING DEVICE - The present invention relates to a rock bolt comprising first and second ends, a shaft extending between the ends, and an anchoring device extending along a first part of the shaft adjacent the first end. The anchoring device comprises a mandrel, and at least one expansion element overlaying the mandrel. The expansion element is displaced radially outwardly on a predetermined relative movement between the mandrel and the expansion element. The expansion element is joined to a connector to form an anchor assembly. The anchor assembly is keyed to the mandrel. The anchor assembly comprises relative rotation actuator means active during rotation of the anchoring device. The invention further relates to an anchoring device per se. | 12-03-2009 |
20100034595 | Friction stabilizers and roof bolt head markings - A roof stabilizer for use in securing surfaces in tunneling and mining is disclosed and claimed. The stabilizer has a tube with a slot and a ring attached to the bottom end of the tube. The ring can have indicia on a bottom surface of the ring or a side surface of the ring or both. The location of the indicia can provide better indication of the properties of the stabilizer to the installer. The indicia is easier to read than that of the background art both before and after installation. The location of the indicia can also provide easer and quicker visual inspection of already installed stabilizers to verify that the proper roof stabilizers were installed. The location of the indicia lessens the likelihood that corrosion will remove the indicia making it unidentifiable. The stabilizer disclosed and claimed also allows the use of grout or an adhesive in the interior of the tube which does not cover up or conceal the indicia on the ring as opposed to indicia in the background art stabilizers. Also disclosed are various locations and methods for placing indicia on the heads of roof bolts. Such indicia locations and methods for placement also aid in the pre and post installation and inspection of roof bolts to provide easier verification that devices with the correct properties were installed. | 02-11-2010 |
20100034596 | ANCHOR AND ANCHOR NUT THEREOF - An anchor includes a rotatable anchor rod an anchor plate and an anchor nut. The screw thread in the anchor nut matches the screw thread of the anchor rod only over part of the screw thread hole. Thus the anchor nut can only be screwed some way further onto the anchor rod, and up to a predetermined torque can be used for rotating the anchor rod during placement of the anchor. As soon as the anchor rod is firmly seated in the drill hole, as a result of the action of adhesive, mortar or expansion or spreading, the anchor rod forms a through-thread in the screw thread hole when the anchor nut is rotated relative to the anchor rod, and consequently the anchor nut can finally be screwed onto the anchor rod until it affixes the anchor plate in its final position to the ground. | 02-11-2010 |
20100054866 | METHOD AND APPARATUS FOR CREATING SOIL OR ROCK SUBSURFACE SUPPORT - A subsurface support is provided in the form of a soil nail. The soil nail has asperities formed on the outer surface thereof to improve the pullout capacity of the soil nail. The asperities can take a number of forms to include indentations, deformations and threads formed on the outer surface of the soil nail. Optionally, a stinger may be attached to a distal end of the soil nail to further enhance the pullout capacity of the soil nail. | 03-04-2010 |
20100098500 | DRILLING TOOL, A SELF-DRILLING ROCK BOLT, A DRILL BIT, AN ANCHORING DEVICE FOR A SELF-DRILLING ROCK BOLT, A SHAFT FOR A DRILLING TOOL AND AN END COUPLING FOR A DRILLING TOOL - A drilling tool ( | 04-22-2010 |
20100119310 | CRAWLER-TYPE AND HEIGHT ADJUSTMENT DRILLING MACHINE FOR SETTING ROOF AND SIDE WALL ANCHOR BOLTS AND ANCHOR CABLES - A crawler-type and height adjustable drilling machine for setting roof and/or side anchor bolts and anchor cables, comprising a crawler moving part, a temporary support, a cylinder for height adjusting, a cross beam, a hydraulic drill for setting roof anchor bolts and anchor cables which can turn around 30°, a hydraulic system and operation console, a crawler driving motor and slipways for forward and backward movement of the drill for side anchor bolts and anchor cables, wherein that a coal pushing shovel is arranged in front of the crawler moving part and below the drilling platform which supports at its front part the hydraulic drill for setting roof anchor bolts and anchor cables which can turn left or right; double columns are provided on which a slipway for left and right moving is mounted; the hydraulic drill for setting side anchor bolts and anchor cables is arranged at one side to the central part of the platform for the drill and can turn toward one side around 90°; the platform for the drills is provided with the slipways for moving forwardly and backwardly on which the columns of the hydraulic drill are arranged so that the cylinder mounted on the platform for the drills pushes the whole drill to move forward and backward. | 05-13-2010 |
20100189515 | TENSONING DEVICE - The present invention relates broadly to a tensioning device ( | 07-29-2010 |
20100196102 | Anchor system - An anchor system for securing a cable within the ground. The system includes a body having a tapered cap and an internal cylindrical slot provided therethrough. A driving rod having an end with a smaller diameter is provided through the slot so that the driving rod extends from the body of the anchor system. The body is provided with a catch through which a line is secured. The driving rod is utilized to drive the anchor system into the ground. As the driving rod extends from the body, the driving rod bears the brunt of the force associated with the driving action, allowing the anchor system to be constructed of a lightweight, inexpensive material. Once the anchor system has been provided at the desired depth, the driving rod is removed and the strap is pulled to set the anchor into place. | 08-05-2010 |
20100202838 | ROCK BOLT - A hollow rock bolt comprising a shaft having a spiral form protruding from the exterior surface of the shaft, wherein the spiral form has a flank angle of between 30° and 60°. | 08-12-2010 |
20100221071 | REMOTELY CONTROLLED MINING MACHINES, CONTROL SYSTEMS, AND RELATED METHODS - In one aspect, a system assists an operator in controlling a machine, such as a bolter including a drill head for drilling a borehole in a mine passage having a face and installing a bolt therein, as well as possibly a miner for advancing the mine passage. A controller controls the operation of the machine, and a transmitter transmits to the controller control signals from the operator at a remote location from the borehole. A sensor causes the controller to take action, such as by providing a warning signal or disabling one or more aspects of the machine, if the operator is within a predetermined proximity of the drilling, bolting, or mining operation. Systems and methods pertain to other related aspects of the invention. | 09-02-2010 |
20100266345 | ENGAGEMENT HEAD FOR TENSIONING ASSEMBLY - An engagement head for a rock bolt tensioning assembly is disclosed that is profiled to include at least one key surface to inhibit rotation of the engagement head relative to a rock surface, either by direct engagement with the rock surface or through abutment with a plate-like member that is engageable with the rock surface. | 10-21-2010 |
20100266346 | ROOF BOLTING CABLE FEEDING DEVICE - A cable bolt lifting and feeding device that is a lightweight unit that mounts into a drill rig rotation unit. The device uses the mechanical power provided in the rotation unit to drive a set of wheels that engage with the cable bolt, causing the cable bolt to be pushed through the device and into a pre-drilled hole. | 10-21-2010 |
20100290840 | PLASTIC ROCK-BOLT OR DOWEL AND METHOD OF MANUFACTURING OF THE SAME - A fibre reinforced rock dowel ( | 11-18-2010 |
20100310322 | MECHANICALLY STABILIZED EARTH CONNECTION APPARATUS - A connection apparatus for connecting an earthen formation to a concrete facing of a mechanically stabilized earth (MSE) structure. The connection apparatus may include a soil reinforcing element configured to be coupled to a facing anchor having a pair of longitudinally extending portions connected by a transverse member, wherein the soil reinforcing element may be inserted into an opening created by the pair of longitudinally extending portions, seated near or adjacent to the transverse member, and be secured therein by means of a clasp. The connection apparatus allows the soil reinforcing element to swivel in at least one horizontal plane, thus being capable of avoiding obstructions in the MSE mass. | 12-09-2010 |
20110002745 | SLIDING ANCHOR - The invention relates to a sliding bolt ( | 01-06-2011 |
20110070034 | CORROSION-PROTECTED, SELF-DRILLING ANCHOR AND ANCHOR SUBUNIT AND METHOD FOR THE PRODUCTION THEREOF - A corrosion-protected, self-drilling anchor and an anchor subunit and to a method for the production thereof is provided. A self-drilling anchor of the invention includes a number of anchor subunits, each with a hollow bar element, which are connected together by the formation of an axial bell butt joint to form a connected pull and pressure member. The first subunit t its end has a drill bit and the subunit is connected non-rotatably with its end to a drilling and injection device. It is provided according to the invention that each hollow bar element is surrounded by a sheathing except for its end sections and the annular gap between the sheathing and hollow bar element is grouted with a first corrosion protection compound. A coupler in the area of the bell butt joint fits tightly against the sheathings of the two hollow bar elements which are part of the bell butt joint. The hollow space between the coupler and hollow bar elements is filled with a second corrosion protection compound. A method of the invention provides for the prefabrication of a number of anchor subunits at the factory to drill these into the substrate at the site of the anchor to be produced and thereby for connecting them together with the formation of bell butt joints, whereby in the area of the bell butt joint a coupler fits tightly against the ends of two neighboring sheathings and the hollow space between the coupler and hollow bar element is filled with a second corrosion protection compound. | 03-24-2011 |
20110103896 | CUTTABLE DRILLING TOOL, AND A CUTTABLE SELF DRILLING ROCK BOLT - The present invention relates to a drilling tool incorporating first and second ends, a cuttable and/or processable shaft extending between the ends. The first end has a drill bit to penetrate rock. The drill bit and the shaft have complementary threads. The drill bit and the shaft comprise a relative rotation stop means that ensures that the drill bit remains loose during drilling in a first direction. The invention further relates to a self drilling rock bolt, a drill bit, drill shaft and shaft coupling, and an anchoring device per se. | 05-05-2011 |
20110142548 | End Coupling for a Rock Bolt - An end coupling for a shaft of a rock bolt comprises a body having a lead portion with a leading end, and a tail portion with a trailing end. The tail portion is arranged to be connected to a drive to impart rotation to the coupling about its axis. The body defines a passage extending between the leading and trailing ends and a first portion of the passage extends from the leading end and has a first diameter. A second portion of the passage is disposed adjacent the first portion and has a second diameter that is larger than said first diameter. A first thread extends along at least part of the first portion of the passage and is arranged to engage an external thread on the rock bolt shaft. A rock bolt assembly incorporating the end coupling is also disclosed. | 06-16-2011 |
20110176876 | METHOD AND SYSTEM FOR PUNCTUAL FASTENING A WATERPROOFING MEMBRANE TO HYDRAULIC WORKS - A method and a system for punctual fastening a waterproofing and protective membrane ( | 07-21-2011 |
20110206468 | Reinforcement and/or anchor bolt - With a reinforcement and/or anchor bolt ( | 08-25-2011 |
20110311314 | MECHANICALLY STABILIZED EARTH WELDED WIRE FACING CONNECTION SYSTEM AND METHOD - A system and method of constructing a mechanically stabilized earth (MSE) structure. A wire facing is composed of horizontal and vertical elements. A soil reinforcing element has a plurality of transverse wires coupled to at least two longitudinal wires where the longitudinal wires are coupled to a coil and a threaded rod is configured to extend through both the vertical facing and the coil. A washer engages the vertical facing and prevents the threaded rod from passing completely through the vertical facing and a nut is threaded onto the threaded rod to prevent its removal from the coil. Multiple systems can be characterized as lifts and erected one atop the other to a desired MSE structure height. | 12-22-2011 |
20120009022 | DEVICE FOR ANCHORING IN MULTILAYER SOIL - It is provided that an anchoring device, in which a positioning plate, intended for bearing on the surface of the soil, is mounted on a hollow rod, the rod supporting in series, from the positioning plate towards the free end, at least one helical disc followed by a drilling disc, wherein the rod extends beyond the drilling disc opposite the plate, and a bit is arranged on the free end of said rod, such that a first portion of the rod, suitable for being screwed into at least one first soil layer, extends from the plate to the drilling disc, and such that a second portion of the rod, suitable for anchoring in a second soil layer, extends from the drilling disc to the bit. | 01-12-2012 |
20120014756 | YIELDABLE CONE BOLT AND METHOD OF MANUFACTURING SAME - A mine roof support assembly for anchoring in a bore hole by means of a resin, cementitious grout which includes an elongated reinforcing tendon which extends from a proximal end portion to a distal end portion. A slip sheath formed from a heat shrunk plastic, is secured by heat shrinkage radially about the tendon. The sheath is mechanically coupled to the tendon so as to allow the desired axial sliding of the tendon relative to the sheath on the application of predetermined forces which sufficient to effect any desired yielding movement of the tendon in the bore hole. An anti-bonding agent or coating and/or anticorrosive may be interposed between the sheath and the tendon, whereby the sheath substantially encapsulates and limits the admixing of the interposed anti-bonding agent/anti-corrosive coating with the resin. | 01-19-2012 |
20120034035 | Tensionable Cable Bolt with Crimped Shaft - A tensionable cable bolt including a length of multi-strand cable and an anchoring portion comprised of a shaft received on the cable and attached to the cable at a crimp portion comprising at least one primary crimp with at least one secondary crimp disposed within the primary crimp. The cable may include a mixing portion and the anchor portion may include an expansion anchor threaded onto the shaft. A method of manufacturing the tensionable cable bolt includes providing a length of multi-strand cable; providing an anchoring portion including a shaft; extending the cable through the shaft; and crimping the shaft to the cable to form at least one primary crimp with at least one secondary crimp disposed within the primary crimp. The method may further include threading an expansion anchor onto the shaft and/or providing a resin mixing portion along the cable. | 02-09-2012 |
20120070234 | Rock Bolt - The present invention relates to rock bolts which may be used in mining applications. The rock bolt of this invention includes a mechanical anchoring arrangement to facilitate retaining the rock bolt in a borehole, and also a drill bit to enable self drilling of the rock bolt. Rotation of the rock bolt about an axis of the rock bolt in a first direction causes the drill bit to drill into rock and to create a borehole to receive the rock bolt. Subsequently, rotation in the opposite direction actuates a mechanical anchoring arrangement to anchor rock bolt. | 03-22-2012 |
20120163923 | STRUCTURE SUPPORTING SYSTEM - The present invention relates to a structure supporting system which helps increase the bearing capacity of the foundation ground. In addition to an upper structure with adequate resistance, structure foundations must also have adequate bearing capacities in order to satisfy the stability requirements. No matter how safe the super structure is built, if the foundation bearing capacity is not adequate then sinking, tilting of the structure and cracks and damages on the super structure is inevitable. In other words, in addition to the safety of the super structure, the performance of the subsoil must also be satisfied, to be able to carry the foundation loads safely. | 06-28-2012 |
20120219365 | Rock Bolt - A rock bolt, particularly for use in mining, having an axial conduit, an anchor nut, and an anchor plate supported by the anchor nut for the purpose of placement on the rock, that is able to expand sufficiently and possess sufficient tensile strength, and also is able to be cut for the purpose of simplified separation of excavated pieces of the rock bolt. This problem is addressed in that the axial conduit is at least partially, and particularly entirely, made of metal and plastic, and the at least one component of the axial conduit made of metal and plastic serves to receive tensile forces. | 08-30-2012 |
20120230774 | SLIDING ANCHOR - A chemical sliding anchor, in particular for use in mining, for the firm bonding to the rock in a borehole using a fixing agent, comprises an anchor pipe, preferably an anchor nut, anchor plate preferably supported by the anchor nut, for lying on the rock, involving little technical effort by effectively using a sliding function of the sliding anchor in the case of a large change in length of the sliding anchor on absorbing dynamic loads. An elastic element, in particular a spring, is integrated in the sliding anchor and an increase in length of the sliding anchor is effected for a given sliding function with a spring deflection of the elastic element. | 09-13-2012 |
20120301228 | Rock Bolt - A rock bolt particularly for use in mining, comprising an anchor tube, an anchor nut, an anchor plate supported on the anchor nut. The rock bolt contacts the rock to show sufficient shearing resistance and may be easily cut. The rock bolt preferably includes an anchor tube that is surrounded by a jacket tube. | 11-29-2012 |
20130051928 | DRILLING RIG - A bolting apparatus and method for inserting a rod into a surface, the bolting apparatus including a base having a foot end and a head end, at least one stabilizing rod extendable from the base head end and having a stabilizing rod end adapted to contact a surface to be drilled, and a mechanism attached to the base between the base foot end and the stabilizing rod end and adapted to grip the rod. | 02-28-2013 |
20130108374 | MOUNTABLE EARTH-EMBEDDING ANCHOR WITH REMOVABLE UNDERGROUND CONDUIT PANELS AND INSTALLATION APPARATUS | 05-02-2013 |
20130121772 | HEAD PIECE FOR A GROUND ANCHOR - A stabilizing device for a load element of a ground anchor includes two plate members, wherein the plate members have a generally L-shape and are complementary and do form a generally cross shape when coupled together and when coupled together form a feed through sleeve for leading the load element there through. Each plate member includes at least one recess surrounded by plate material, which at least one recess of each plate member receives a central feed through sleeve forming plate member portion when the plate members are coupled together for forming the generally cross shaped stabilizing device. | 05-16-2013 |
20130149041 | ROCK BOLT AND ROCK BOLT COMPONENT - A rock bolt component includes an elongate tubular section with an internal bore. A fixing member has an elongate body that includes a securing portion positionable in the internal bore of the tubular section and a coupling formation which projects from an opposite end of the fixing member. The fixing member is securable by deformation of an end of the tubular section, once the securing portion of the fixing member has been inserted into the end of the tubular section. | 06-13-2013 |
20130236250 | Fiberglass Roof and Rib Plate - A bearing plate and a nut and bolt arrangement for use as a rib or roof support for coal mines where the extracted coal is used for powder coal and has a specific gravity in the range of 1.5-1.9, preferably 1.7. The bearing plate has an outer reinforced area surrounding an inner reinforced area. The outer reinforced area has one or more endless rib members and the inner reinforced area has a plurality of legs, wherein the legs are spaced from one another and the first end of each leg encircles a bolthole in a center of the bearing plate to receive the bolt of the nut and bolt assembly. The bearing plate and the nut and bolt assembly are made of fiberglass reinforced plastic | 09-12-2013 |
20140030030 | MINE BOLTER - A machine ( | 01-30-2014 |
20140037387 | GROUND STABILISING DEVICE - A ground stabilising device ( | 02-06-2014 |
20140072372 | Tandem Plate for Friction Rock Stabilizer - A tandem plate for use with a friction rock stabilizer of the kind that includes an elongated metal tube driven into a bore drilled in a rock wall and having an end adapted to engage a bearing plate. The tandem plate includes a substantially planar metal sheet having an upper surface, a lower surface and an overall dimension which is larger than the size of the bearing plate. An opening adjacent the center allows the tube to pass therethrough. The lower surface engages the rock wall while the upper surface of the tandem plate engages the bearing plate. A tabs on the upper surface, formed by punching and bending parts of the planar sheet from which the tandem plate is made, engage the bearing plate while the tube is being driven into the bore. A plurality of ribs formed on the tandem plate increase the strength thereof. | 03-13-2014 |
20140079492 | ALPINE ANCHOR FOR ANCHORING THREADED RODS IN SOIL OR ROCK - Alpine anchor for anchoring threaded rods in soil or rock, with a metal base plate having a number of threaded bores which are distributed about the circumference and into which the threaded rods can be screwed with an assembly machine, wherein at least one plug coupling is arranged between the stationary part of the assembly machine and the base plate. | 03-20-2014 |
20140099167 | MINE ROOF BOLT ASSEMBLY - A mine roof bolt assembly ( | 04-10-2014 |
20140105690 | Tension Cable Bolt - A low profile tensionable bolt cable system and method of installation. The tensionable bolt cable has a tension cylinder with a constant diameter throughout its length and a threaded exterior. A bearing plate is provided with an opening and a first mating member. The tension cylinder has a proximal and a distal end with the proximal end having an angled interior surface and a longitudinally extending second mating member. The first and second mating members mate when the tension cylinder is inserted into the bearing plate. Angled wedges are inserted into the angled interior surface. A cable is inserted into the tension cylinder and between the wedges to hold the cable with respect to the tension cylinder to prevent the cable from twisting. A nut is threaded onto the tension cylinder, to tension the cable. | 04-17-2014 |
20140112723 | BULLET ANCHOR SYSTEM - An anchor system for an erosion control mat is provided. The system includes a bullet anchor comprising a bullet anchor body and a bullet anchor strap integrally molded with and extending from a first side of the bullet anchor body. In embodiments, a lock washer is coupled to the bullet anchor strap. In embodiments, serrations on at least one side of the bullet anchor strap are adapted to prevent the lock washer from traversing the bullet anchor strap in a direction away from the bullet anchor. In embodiments, the lock washer is adapted to couple with an erosion control mat. In embodiments, an anchor tab on a second side of the bullet anchor body secures the bullet anchor body in a ground surface. The anchor system is utilized to secure the erosion control mat to the ground surface and prevent undesired movement of the erosion control mat. | 04-24-2014 |
20140112724 | ROCK BOLTING SYSTEM, METHOD OF INSTALLING ROCK BOLTS, AND FLEXIBLE BOLT CENTRALIZER - A rock bolting system comprises independently movable hydraulic stinger, drill feed and bolting feed. The stinger is hydraulically extended to sting or engage the face of the rock. With the stinger stinging the rock face, the drill feed drills a hole in the rock. With the stinger still stinging the rock face, the bolting feed is indexed into position and a rock bolt is installed in the hole. A flexible elastomeric bolt centralizer may be mounted to the bolting feed to guide the rock bolt into the hole drilled by the drill feed. | 04-24-2014 |
20140154016 | DETACHABLE FEED RAIL FOR ROCK DRILL - A feed rail for a rock drill is composed of two segments, a first beam defining a first rail segment and a second beam defining a second rail segment. The second beam may be detachably connected to the first beam so that the second beam can be removed altogether from the first beam. This invention enables the feed rail to be shortened, thereby making the feed rail much easier to manoeuvre in mines. | 06-05-2014 |
20140154017 | SELF-DRILLING FRICTION BOLT - A reinforcement system includes an adapter, a friction bolt, a drilling rod coupled to the adapter, and a drill bit configured to drill an opening optimally sized for receiving the friction bolt. The drilling rod has a diameter that allows for introduction of the drilling rod into the friction bolt. | 06-05-2014 |
20140294514 | SCREEN-HANDLING SYSTEM AND METHOD OF INSTALLING SCREENING ON A ROCK FACE - A screen-handling stinger extends and retracts hydraulically from within a bore of a hydraulic stinger of a rock bolter. The screen-handling stinger has a finger that engages a screen. The screen-handling stinger retracts the screen until it snugly abuts the front face of a pad of the stinger. The screen can then be rotated by the rotation motor of the stinger. | 10-02-2014 |
20150023740 | Ground and Rock Anchor - A ground and rock anchor includes a longitudinally stable, flexible tensile member, an anchorage part, in which the tensile member may be fixed by the one end region, and an anchor head device, in which the tensile member is held by the other end region. The anchorage part is designed to be introduced into a drilled hole in the ground or rock and anchored therein. The longitudinally stable, flexible tensile member is provided at least at the one end region fixed in the anchorage part with at least one first loop. The anchorage part is a substantially prismatic or cylindrical longitudinal body, which is formed of a hardenable composition, by which the at least one first loop of the longitudinally stable, flexible tensile member is surrounded. This configuration allows the forces to be optimally transferred. | 01-22-2015 |
20150104261 | KNOTTED MESH AS SUPPORTING MATERIAL IN MINES - A method for lining mining and tunnel constructions with a support material ( | 04-16-2015 |
20150117961 | Method And Rock Bolting Rig For Installation Of A Rock Bolt - The present invention relates to a method for installation of a rock bolt ( | 04-30-2015 |
20150139741 | ROOF BOLT INSTALLATION TOOL - The invention provides a roof bolt installation tool which has a central drill bit. A plate surrounds the central drill bit and has radial drill bits attached to it so that when the central drill bit rotates, the plate rotates. A boot surrounds the plate and is rotationally isolated from the plate and central drill bit. When the drill bit cuts a central bore into a mine roof, the radial drill bits cut a recess having a horizontal surface. A roof bolt and support plate are installed such that the bolt is inserted in the central bore and the support plate abuts the horizontal surface. | 05-21-2015 |
20150292326 | SIDE-MOUNTED BOLT DRIVER AND METHOD OF DRIVING ROCK BOLTS - A rock drilling and bolting system comprises a drill feed slidable on a drill feed rail for drilling a hole, a bolter feed slidable on a bolter feed rail, the bolter feed having a main bolt driver for driving a rock bolt, a side-mounted bolt driver mounted to the bolter feed rail, the side-mounted bolt driver being disposed rearwardly of the main bolt driver to receive the rock bolt when there is insufficient space to load the rock bolt in the main bolt driver and to drive the rock bolt partially into the hole, and an indexing mechanism for rotating the main bolt driver into alignment with the rock bolt that is partially driven into the hole, wherein the main bolt driver drives the rock bolt fully into the hole. | 10-15-2015 |
20150300170 | ROCK BOLTER WITH ALIGNMENT MECHANISM FOR SWINGING BETWEEN DRILLING AND BOLTING - A rock drilling and bolting system includes a frame, a drill feed rail rotationally supported on the frame, the drill feed rail having a drill feed slidable on the drill feed rail and a bolter feed rail rotationally supported on the frame, the bolter feed rail having a bolter feed slidable on the bolter feed rail. The system further includes a rotary mechanism comprising a first pivot arm and a parallel second pivot arm that rotationally couples the bolter feed rail to the drill feed rail and an actuator mounted to the frame and the rotary mechanism for simultaneously rotating the drill feed rail and the bolter feed rail between a drilling position for drilling and a bolting position for bolting. | 10-22-2015 |
20150337659 | Connection Means with Shape Memory - A connector is disclosed for providing a positive and/or a non-positive connection between at least two connecting partners. The connector or connecting means has at least one first region which engages with the first connecting partner by way of a positive and/or a non-positive connection, and at least one second region is provided which engages with the at least second connecting partner by way of a positive and/or a non-positive connection. The connecting means provides a positive and/or non-positive connection between at least two connecting partners in a simple and inexpensive manner and which meets high safety requirements. The second region of the connecting means has a region which is formed from an at least partially flat material made of an Fe alloy with shape memory characteristics and which, when activated, ensures the positive and/or non-positive connection with the second connecting partner by way of a change in shape. | 11-26-2015 |
20160010304 | COUPLER FOR SOIL NAIL AND METHOD OF EMPLACING SAME | 01-14-2016 |
20160076215 | EARTH ANCHOR METHOD AND APPARATUS - An improved earth anchor includes modifications allowing it to be driven more accurately into hard or clay-rich soil. Methods of manufacture, use, and devices are described. | 03-17-2016 |
20160122967 | NON-MECHANICAL ANCHOR - A non-mechanical, anchor for securing a temporary shelter to ice or soil. | 05-05-2016 |
20160130778 | Self-Drilling Rock Bolt Assembly and Method of Installation - A self-drilling rock bolt assembly ( | 05-12-2016 |
20160138397 | ANCHORING AND ANTI-CLOGGING DRILL ROD FOR COAL MINE FLOOR - An anchoring and anti-clogging drill rod for a coal mine floor and methods thereof are provided. The anchoring and anti-clogging drill rod includes a hollow drill pipe and a hollow sleeve configured inside the hollow drill pipe. A front joint is configured at a front end of the hollow drill pipe. A back joint is configured at a back end of the hollow drill pipe. The hollow sleeve is wound with a spiral connection line in a direction opposite to a rotation direction of the anchoring and anti-clogging drill rod during drilling. A spiral-shaped space is formed between the spiral connection line and an inner chamber of the hollow drill pipe. | 05-19-2016 |
20160168993 | YIELDABLE ROCK ANCHOR | 06-16-2016 |
20160186563 | Self-Undercut Anchor System - The self-undercut anchor with carbide tip is designed to create a drill hole and enlarging the lowermost end of said drill hole by means of a carbide tip or cutting portion. The carbide tip or cutting portion is positioned in such a way so as to not obstruct the setting of the anchor by means of the spreading lamellae. Once said lamellae have been positioned properly and forced downward, the self-undercut anchor is set in place. | 06-30-2016 |
20160186564 | FRICTION BOLT ASSEMBLY - A friction bolt assembly has a generally tubular friction bolt body defining a cavity longitudinally extending through the friction bolt body and having a split longitudinally extending along the friction bolt body to the friction bolt body leading end. A rod longitudinally extends through the cavity. An expansion element is mounted on, or integrally formed with, the rod at or toward the rod leading end and protrudes through the friction bolt body leading end. The expansion element has an engagement surface tapering toward the rod trailing end. A drive head is mounted on, or integrally formed with, the rod at or adjacent the rod trailing end. The rod is actuatable by rotation of the drive head to draw the expansion element toward the friction bolt body trailing end such that the engagement surface engages the friction bolt body at the friction bolt body leading end, radially outwardly deforming the friction bolt body at the friction bolt body leading end. The friction bolt assembly may comprise means for at least substantially preventing rotation of the expansion element relative to the friction bolt body. | 06-30-2016 |
20180023391 | Slotted Tubular Anchor | 01-25-2018 |