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| Number | Title | Issue Date |
| 7832960 | All-conditions tunnel boring machine A tunnel boring machine is provided comprising a cutter head, a main beam, a first, second, and third shield; and a ground conditioning work zone within the first shield, a gripper assembly, a segment erector arm for lining the tunnel, and at least one propulsion me... | 11/16/2010 |
| 7387174 | Device and method of lining a wellbore A method of sealing the wall of a wellbore (1) as it is being drilled through a subterranean formation using a drill string (3) having a drill bit (4) on the lower end thereof comprises fitting to the lower end of a drill string (3) a dev... | 06/17/2008 |
| 7281576 | Apparatus and methods for sealing voids in a subterranean formation Downhole tools that include an outer tubing disposed around an inner tubing for placement of a sealant mixture into a void in a subterranean formation and associated methods of use are provided. Furthermore, a method is provided for preparing a cement composition, w... | 10/16/2007 |
| 7232368 | Mine ventilation A mine air crossing includes opposite side walls and a deck extending from side wall to side wall. Each side wall includes a plurality of sections assembled side-by-side and interconnected by quick-connections. Similarly, each deck may include deck sections assemble... | 06/19/2007 |
| 7219750 | Process and system for drilling and lining a bore hole An apparatus is provided for the drilling of a borehole and its simultaneous lining with cement or the like by the same apparatus. The apparatus comprises a combination spray head and reamer head, a means to drive the reamer head through a borehole and a means for d... | 05/22/2007 |
| 7165578 | Method for laying a rehabilitating pipe A rehabilitating pipe is laid inside an existing pipe to rehabilitate the existing pipe. Support members are intergrally connected to an inner wall surface of the existing pipe so that loop portions of the respective support members extend from the inner wall surfac... | 01/23/2007 |
| 7156124 | Segment for rehabilitating an existing pipe and a rehabilitating pipe assembled using segments A segment for rehabilitating an existing pipe has an integral structure comprised of an inner plate having an inner circumferential surface that is planar or curved with a prescribed curvature, two side plates provided upright on each side edge of the inner plate, a... | 01/02/2007 |
| 7128375 | Method and means for recovering hydrocarbons from oil sands by underground mining The present invention is directed generally to the combined use of slurry mining and hydrocyclones to recover hydrocarbons, such as bitumen, from hydrocarbon-containing materials, such as oil sands, and to selective mining of valuable materials, particularly hydroca... | 10/31/2006 |
| 7097255 | Method and means for processing oil sands while excavating The present invention is directed to the separation of bitumen, such as by the Clark process or by a countercurrent de-sander, in an underground excavation machine, such as a tunnel boring machine. ... | 08/29/2006 |
| 7056064 | Block unit for repairing flow passage facilities and method of repairing flow passage facilities A block unit for repairing flow passage facilities is provided for permitting a desired repair operation. A method of repairing flow passage facilities using the block unit is also provided. The block unit includes an inner plate defining an inner surface, an outer ... | 06/06/2006 |
| 7033430 | Cement-containing compositions and method of use A settable fluid cementitious composition which is fluid for sufficient time to be suitable for use in a flexible container to provide support in a mine said composition comprises (i) Portland cement in an amount from at least about 8% preferably 10%, (ii) a water s... | 04/25/2006 |
| 7017613 | Segment for rehabilitating pipe assembly A segment is coupled to additional segments to constitute a rehabilitating pipe for repairing an existing pipe. The segment comprises an inner plate that defines the inner circumferential surface of the rehabilitating pipe and has an opening therein for performing t... | 03/28/2006 |
| 7004264 | Bore lining and drilling A method of lining and drilling a bore (10) comprises the steps of mounting a first section of bore-lining tubing (20) on the lower end portion of a drill string (18). The method also includes running the drill string and tubing into a bore havi... | 02/28/2006 |
| 6955502 | Method for repairing in-ground tunnel structures A method for repairing in-ground tunnel structure involves applying a first curable resin over a cementitious liner which lines the interior wall surfaces of the tunnel, drilling drainage holes in the cementitious liner, and filling the drainage holes with a second ... | 10/18/2005 |
| 6953306 | Method of accurate trenchless installation of underground pipe A method for the trenchless installation of new underground pipe accurately on line and on grade by microtunneling to install a pilot tube, installing a drill string along the pilot pipe line using a directional drilling machine, installing a back reamer to the dril... | 10/11/2005 |
| 6953307 | Apparatus for assembling a liner Apparatus for assembling a liner (25) from a plurality of longitudinal sections of flexible material (161, 162) having longitudinal edges adapted to be joined one to another to form the liner. The apparatus comprises a path means along which the longit... | 10/11/2005 |
| 6948883 | Sealing the junction region where a lateral pipe and a main pipe meet A lining for sealing the junction region where a lateral pipe and a main pipe meet. It has a two-portion structure including a main portion for lining a portion of the main pipe and a lateral portion of resin absorbent material for lining a portion of the lateral pi... | 09/27/2005 |
| 6929330 | Method and system for mining hydrocarbon-containing materials The present invention is directed, inter alia, to devices and methods for excavating valuable materials, particularly soft ores such as oil sands, oil shales, and the like, that use one or more of a number of features, including backfilling for ground support, a sma... | 08/16/2005 |
| 6926466 | Device and a method for rehabilitating conduits A polyurethane applicator (10) for spraying at high-pressures a liner on the inner circumferential wall of an existing conduit (C) to be rehabilitated. The applicator (10) includes a carriage (12) coaxially guided in the conduit (C) and an atomi... | 08/09/2005 |
| 6923597 | Tail shield for a shield tunneling apparatus Present in a tail shield (1) for a shield tunneling apparatus are a number of grouting lines (3) that are open to a tail shield end (4) and that can be supplied with filling material for grouting a ring gap (7) with the filling material, ... | 08/02/2005 |
| 6869147 | Method and system for mining hydrocarbon-containing materials The present invention is directed, inter alia, to devices and methods for excavating valuable materials, particularly soft ores such as oil sands, oil shales, and the like, that use one or more of a number of features, including backfilling for ground support, a sma... | 03/22/2005 |
| 6793441 | Tunnel waterproofing method A tunnel waterproofing method comprises spraying a primary coating of concrete onto the excavation surface of a tunnel, installing thereon a waterproofing sheet having an adhesive layer operative to bond with concrete, and spraying a secondary coating of concrete ag... | 09/21/2004 |
| 6652190 | Method to install underground pipe casing A method and apparatus for installing a pipe casing underground without a trench for distances up to 400 feet with pipe casing up to 168 inches in diameter. The system uses a modified high energy piling hammer to mobilize the energy to drive the casings o... | 11/25/2003 |
| 6634828 | Method for in situ renovation of a manhole, particularly a sewer manhole, and prefabricated liner therefore There is described a method and a liner for in situ renovation of a sewer manhole, e.g., a transition well, where inside the well there is inserted a prefabricated liner in the shape of a glass fiber reinforced stocking of thermosetting polyester or epoxy... | 10/21/2003 |
| 6595724 | Tunnel excavating machine and excavating method A tunnel excavating machine of high-speed construction capable of completely stopping invasion of water and allowing covering members to be assembled easily is provided. This tunnel excavating machine comprises: a cylindrical excavating machine main porti... | 07/22/2003 |
| 6554368 | Method and system for mining hydrocarbon-containing materials The present invention is directed, inter alia, to devices and methods for excavating valuable materials, particularly soft ores such as oil sands, oil shales, and the like, that use one or more of a number of features, including backfilling for ground sup... | 04/29/2003 |
| 6468000 | Method and apparatus for feeding a tunnel roof support system from the roof shield of a TBM A primary support for a tunnel roof comprising elongated lagging members which are "extruded" from tubes forming a shield for a tunnel boring machine. The lagging is inserted into the tubes at different times so as to avoid having the ends of adjacent lag... | 10/22/2002 |
| 6406220 | Arched support structure A support structure and method for forming same for use in excavations such as underpasses, tunnels and the like for roads, rail or rivers. The support structure allows the utilization of the strength provided by using arch shaped sections and also minimi... | 06/18/2002 |
| 6382876 | Method of repairing or reinforcing worn-out underground burried drainpipes by resin transfer molding process using both flexible tubes and bagging films A method of repairing or reinforcing worn-out underground buried drainpipes by a resin transfer molding process using both flexible tubes and bagging films is disclosed. In the method of this invention, a reinforcement is primarily inserted into a desired... | 05/07/2002 |
| 6375390 | Method for widening road, superhighway or railway tunnels, without interrupting the traffic A construction method for widening road, superhighway or railway tunnels, without interrupting the traffic flow includes a first stage of excavation; in steps, of the ground between the theoretical profile of the future widened tunnel and that of the orig... | 04/23/2002 |
| 6315496 | Method of lining a tunnel and apparatus for performing the same The present invention relates to a tunneling method starting from the working face in the driving direction, a bearing layer being laid as the working face progresses and then carried away together with the debris. The inventive system includes at the fro... | 11/13/2001 |
| 6302621 | Segment for intake tunnels A segment 20 has segment units 22 obtained by dividing a cylindrical body having an appointed length into four sections along the circumferential direction. The segment units 22 are provided with a segment body 22a, a porous concrete layer 22b, water inta... | 10/16/2001 |
| 6298920 | Method and apparatus for removing a rigid liner from within a cylindrical cavity A cylindrical cavity is continuously contacted while removing a rigid liner from within the cavity. The supporting apparatus includes a flexible liner insertable within the rigid liner, having an expanded diameter greater than a diameter of the cavity, an... | 10/09/2001 |
| 6244846 | Pressure containment device for everting a flexible liner A pressure containment device enables the installation of an everting liner without requiring a shipping container that can be pressurized. A pressure housing provides an inlet for receiving the liner and an outlet for installing the liner into the boreho... | 06/12/2001 |
| 6210074 | Material and method for lining pipes A material and method is provided for lining man-entry sized pipes and securing the lining to the pipe. The lining comprises a plurality of adjacent, unplasticized polyvinyl chloride panel segments circumferentially curved within the pipe, each including ... | 04/03/2001 |
| 6193439 | Process for cladding substrates and constructions produced thereby A construction for a partially-anchoring substrate, particularly a tunnel, comprises a sealing front layer applied to the substrate or an initial concrete layer applied thereto, and a non-deformable second layer applied to the first layer, the surface of ... | 02/27/2001 |
| 6109828 | Horizontal drilling method A bore hole support system is formed from a flexible liner that is readily everted within a bore hole and forms a bore hole support system to install a casing in the bore hole while supporting the bore hole walls. After a pilot hole is drilled, the pilot ... | 08/29/2000 |
| 6082930 | Shield driving machine The present invention relates to a shield driving machine by which eliminates excessive work of the ground when working at a curved section while suppressing an increase of the sinking of the ground surface and securing a quickening in the stability of se... | 07/04/2000 |
| 6033149 | Material and method for lining pipes A material and method is provided for lining man-entry sized pipes and securing the lining to the pipe. A plurality of lining panels (10) are positioned along the interior surface of a pipe so as to form a plurality of adjacent wall portions extending thr... | 03/07/2000 |
| 5993114 | Apparatus and method for pipeline renovation A method of providing an internal lining in a pipeline. The method comprises inverting a tubular liner within said pipeline, said liner having a cementitious coating on a surface thereof. This brings the cementitious material into contact with the wall of... | 11/30/1999 |
