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| Number | Title | Issue Date |
| 8142109 | 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 th... | 03/27/2012 |
| 8137032 | Anchor with grout jacket An anchor 1 for consolidating non-cohesive rock layers or for connecting them to solid rock 2 primarily has the necessary components for realising a stressed or expansion anchor. Furthermore, when a conventional domed plate 10 is used, which rel... | 03/20/2012 |
| 7896581 | Re-tensionable cable bolt apparatus and related method A re-tensionable cable bolt and related methods are provided. In one aspect of the invention, the bolt includes a sleeve for connecting or securing to a cable. The sleeve includes a lower end having a bore adapted for receiving a threaded shank for associating with ... | 03/01/2011 |
| 7845884 | Resin insertion device and methods of inserting resin A resin insertion device includes a barrel, a piston within the barrel, and a triggering mechanism. The triggering mechanism includes an air outlet, an air inlet, a venturi tube and at least one trigger piston. A resin insertion device includes a barrel having a col... | 12/07/2010 |
| 7789589 | Fastening element A fastening element has a drilling head (21) provided at one end (16) of anchor tube (12) and having at least one inlet opening (23) that opens toward the receiving chamber (13) of the anchor tube (12), and at least one thro... | 09/07/2010 |
| 7758284 | Tensionable spiral bolt with resin nut and related method In one aspect of the invention, an apparatus and related methods for installation in a borehole formed in a face of a mine passage comprises an elongated bolt including a spiral shaft portion for positioning in the borehole. A hardened, stationary resin nut formed i... | 07/20/2010 |
| 7568862 | Plug member A plug member (10) for retaining grout in a cable bolt hole or a rockbolt hole or inside a rockbolt in underground excavations, comprising a cylindrical cap portion (20) with a means to wedge (26) the cap portion in the hole. The means to wedgin... | 08/04/2009 |
| 7481603 | Tensionable spiral bolt with resin nut and related method In one aspect of the invention, an apparatus and related methods for installation in a borehole formed in a face of a mine passage comprises an elongated bolt including a spiral shaft portion for positioning in the borehole. A hardened, stationary resin nut formed i... | 01/27/2009 |
| 7404274 | Masonry wall anchoring system An anchoring device configured for reinforcing and renovating an existing masonry wall. The anchoring device is preferable a plastic anchoring device configured to be inserted in a hole in the existing masonry wall, and then preferable expanded to securely anchor sa... | 07/29/2008 |
| 7381013 | Rock bolt post grouting apparatus An apparatus (100) for post-grouting a rock bolt (1) has an elongate sleeve (101) adapted to receive a rock bolt (1) with a first end (1a) thereof extending beyond the sleeve first end (101a) and a second end (... | 06/03/2008 |
| 7377724 | Method and device for installing a self-drilling expandable rock bolt and a self-drilling rock bolt In a method and a device for installing, in a rock wall or roof, a self-drilling expandable rock bolt (2) having a drill bit portion (5), an expansion portion (9) and a connecting portion (10), in a rock breaking step, the self-drilling r... | 05/27/2008 |
| 7338233 | Soil nail and method of installing a subsurface support A subsurface support includes a soil nail of two-piece construction. The body of the soil nail is constructed of fiberglass. The tip of the soil nail is constructed of a machined metal piece that is secured to the distal end of the fiberglass body. The soil nail is ... | 03/04/2008 |
| 7338234 | Rock bolt A rock bolt (1) comprises a tubular body (4) defining a tubular bore (5) for receiving an adhesive or cement filled cartridge (18). A plug (8) is mounted in the bore (5). The plug (8) is displaceable along the bore ( | 03/04/2008 |
| 7318689 | Method and device for rock bolting Method and device for rock bolting, wherein a tubular bolt (2) with closed cross-section is inserted and expanded for anchoring inside a bore hole (12), wherein the tubular bolt is expanded to contact in the inner portion of the bore hole, a tension el... | 01/15/2008 |
| 7311470 | Wale and retaining wall system A wale for use in bracing a retaining wall. The wale is comprise of a back wall, a front wall having a channel formed therein, and a plurality connecting walls connecting the back and front walls to form at least one chamber between the back and front walls. In one ... | 12/25/2007 |
| 7309199 | Sprue dowel A sprue dowel has a radially projecting embeddable portion (12) and an attachment portion (21) formed as a hollow cylindrical shaft (24) provided with a plurality of spaced from each other, furrowed retaining projections (26, 27) formed o... | 12/18/2007 |
| 7296950 | Point anchor coated mine roof bolt A resin bonded mine roof bolt having an elongated rod with a first end and a second end. A segmented resin compression layer covers a portion of the rod below the first end. When installed in a mine roof bore hole with curable resin, the resin compression layer mixe... | 11/20/2007 |
| 7287608 | Method and device for drilling a hole in soil or rock material and for forming an anchoring A method and device for boring a hole in soil or rock material and for forming an anchoring are disclosed. A borehole is formed by inserting a drill bit, and tensioning elements coupled to the drill bit are introduced into the borehole. After completion, the boring ... | 10/30/2007 |
| 7284932 | Pressing-out apparatus A pressing-out apparatus (4) for pressing out a mass from a self-drilling, chemical composite anchor (2) for mining and tunnel construction has a pressing device arranged in a housing (21). The composite anchor (2) includes an anchor tube... | 10/23/2007 |
| 7275605 | Rotatable drill shoe A rotatable drilling shoe attachable to a section of casing that allows for drilling and casing of a well bore in a single trip. The drilling shoe includes a fixed section and a rotatable section that has a drillable bit attached thereto. The drilling shoe further i... | 10/02/2007 |
| 7270501 | Expandable rock bolt and rock bolting system The present invention is related to a rock bolt (7), expandable by means of a pressure media, for insertion into a borehole. The expandable bolt (7) comprises a connection unit (8) with means (11) for detachable interaction with an expans... | 09/18/2007 |
| 7249540 | Connector adapter An adapter for installing a connector to a terminal post, wherein the connector is attached to a cable, is presented. In an embodiment, the adapter is comprised of an elongated collet member having a longitudinal axis comprised of a first collet member end, a second... | 07/31/2007 |
| 7226650 | Wrapped highly viscous chemical anchoring adhesive A film wrapper for use in storing slugs and ropes of chemical anchoring adhesive includes an outer metallized polymer layer and a heat seal layer. The metallized polymer layer protects the chemical anchoring adhesive from premature reaction by providing a barrier to... | 06/05/2007 |
| 7226247 | Method and apparatus for creating soil or rock subsurface support A subsurface support includes a protective outer member that encases an interior support member. The inner support member may typically be a steel or iron rod which is held within the outer tube as by grout or cement. The outer tube is preferably emplaced by forcing... | 06/05/2007 |
| 7207149 | Anchor and method for reinforcing a structure Anchor 10 for reinforcing a structure against displacement forces and a method of installation includes drilling a borehole 50 in an anchor medium 110 adjacent the structure A length of roving 21 composed of filaments 24 is doubled... | 04/24/2007 |
| 7182156 | System for overburden drilling The present invention provides a global drilling system comprising a crown bit, a driver drill bit and a square drill bit. The crown bit has a tubular body with an inner surface and an outer surface, wherein the inner surface circumscribes a hollow passageway, and a... | 02/27/2007 |
| 7175362 | Synthetic covering systems for safety areas of airports Systems, methods and apparatuses for airport safety areas, runways and taxiways is provided. Various attachment systems for installing a synthetic covering are described. The use of artificial turf as well as various embodiments for a suitable synthetic matting for ... | 02/13/2007 |
| 7174961 | Methods of cementing using cement compositions comprising basalt fibers Methods of using cement compositions that comprise basalt fibers in subterranean formations are provided. An example of such a method may comprise providing a cement composition that comprises water, a hydraulic cement, and a plurality of basalt fibers; introducing ... | 02/13/2007 |
| 7147404 | Elongate element tensioning member An adjustable yield rock bolt that comprises an elongated tensile support member that interacts with at least one gouging member and a receiving member capable of receiving the elongated tensile support member and hold the gouging member segment there between, where... | 12/12/2006 |
| 7097403 | Reduced material fastener A reduced material fastener has a shank cross-section selected to provide a parting line. Having a parting line means that the fastener may be made using two opposing dies, including roller dies, to cold form the cross-section. The cross-sections do not have to be s... | 08/29/2006 |
| 7080697 | Method and device for drilling a hole and for securing an anchorage in a bore hole A method and a device for the drilling, in particular the percussive or percussive rotary drilling of a hole in earth or rock and for securing an anchorage in the hole. A bore hole is created by a drill bit mounted on a drill pipe and a sliding sleeve that surrounds... | 07/25/2006 |
| 7076924 | Ovalized concrete block-out tube with tear away nailing flange A block-out tube for use in joining together pre-cast concrete members, the block-out tube having an ovalized cross-section, an integral elongate imperforate hollow tubular body with smoothly curved corrugated walls, a rounded tip closing the bottom end thereof, a m... | 07/18/2006 |
| 7073982 | Point anchor coated mine roof bolt A resin bonded mine roof bolt having an elongated rod with a drive head at one end and an expansion anchor threaded onto the other end. A segmented resin compression layer covers a portion of the rod below the expansion anchor. When installed in a mine roof bore hol... | 07/11/2006 |
| 7073981 | Rock stabilizer A rock stabilizer includes a metal tube with a tapered distal end and a flanged proximal end capable of being positioned within a bore in a mine wall. A slit runs substantially the entire length and indentations are formed in the outer surface along the length adjac... | 07/11/2006 |
| 7037058 | Resin embedded rock bolt A resin embedded rock bolt dimensioned to be inserted into a hole drilled in a rock body with a clearance fit between the bolt and hole, the bolt having a shank which is plastically deformed by the application of an eccentric shear force to form a paddle protruding ... | 05/02/2006 |
| 7037046 | Yielding strata bolt The present invention discloses a rock bolt having a tendon (1, 201) which is able to yield and thereby control movement of unstable rock strata into which the bolt is installed. The tendon has a portion which is provided with a grout slippage mechanism, pref... | 05/02/2006 |
| 7033117 | Rock anchor A self-drilling rock anchor includes an anchor tube (2), a drill head (6) provided at the first end (5), an outer thread (8) provided at least in a region of the second, free end (7) of the anchor tube and an adapter (11) re... | 04/25/2006 |
| 7032686 | Drilling and bolting head for a bolting machine The drilling and bolting head (7) of compact structure, is designed for use in mine galleries of small height. It comprises: a transverse table (8) connected to the carrying vehicle, preferably with a device (9 to 12) for lifting this tab... | 04/25/2006 |
| 7025538 | Bonding anchor An anchor (1) comprising an anchor tube (2) and an inner tube (3) arranged in the anchor tube (2) for receiving a dispensable chemical mass (4). The anchor tube (2) has a first end (5) with a drilling head (6) ... | 04/11/2006 |
| 7021876 | Simplified installation captive panel fastener A simplified captive panel fastener including a head, shank, a threaded outer end, and a centrally threaded opening at the outer end. Longitudinal slots extend along the outer end of the fastener to receive a retention washer with inwardly extending prongs. The meth... | 04/04/2006 |
