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| Number | Title | Issue Date |
| 7270150 | Method of lining a pipeline The present invention is an improved method for installing a liner to repair a pipeline. The method involves placing a flexible lining hose that is coated with a thermosetting resin into the pipeline. A quick setting resin is also applied to the interior walls of th... | 09/18/2007 |
| 7267505 | Mine ventilation panel system A panel system for making mine ventilation structures. The panel system comprises a plurality of elongate metal panels having flanges along sides thereof configured for overlapping one another when the panels are placed in side-by-side relation. When the panels are ... | 09/11/2007 |
| 7267507 | Method of reinforcing an embedded cylindrical pipe A composite structural reinforcement is realized within the pipe through in situ stratification of at least one band of reinforcement fibers and a resin matrix. The band is arranged according to a helicoidal path along the internal side of the pipe. ... | 09/11/2007 |
| 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 |
| 7211173 | System for inhibiting fouling of an underwater surface A marine fouling inhibiting system comprises first and second conductors which are made of a polymer matrix, such as vinyl ester, and a suspended conductor, such as graphite powder or particles. This type of conductive material is formed to provide two sections of a... | 05/01/2007 |
| 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 |
| 7025580 | Method and apparatus for lining a conduit Method and apparatus for installing a liner material into a host conduit such as, e.g., a sewer pipe, hydrocarbon pipeline, gas line, water line, industrial chemical pipe, or a saltwater line. The liner material may include a compression liner and/or a preliner that... | 04/11/2006 |
| 7018138 | Pier-repairing and reinforcing panel and method of repairing and reinforcing piers using such panels A pier-repairing and reinforcing panel is used in a method of repairing and reinforcing a pier. The panel includes locking members, locking ribs, reinforcing ribs, and clips. The method includes the steps of: installing a watertight caisson around a pier and removin... | 03/28/2006 |
| 6988337 | Means and method for constructing a fully precast top arch overfilled system The top arch overfilled system defined in application Ser. No. 10/102,921 is formed of precast arch elements which are formed and shipped in a use orientation. The precast arch elements can include arch footings and the system can include a plurality of precast arch... | 01/24/2006 |
| 6962465 | Method for improving the environment within soil embedded culvert and bridge systems The environment and growth of vegetation within a soil embedded culvert system is improved by directing artificial or natural light onto the vegetation within the enclosed passage defined by the culvert system. The light is produced either by internal electrical gro... | 11/08/2005 |
| 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 |
| 6942424 | Width expandable modular ditch liners An open modular ditch liner includes a plurality of open liner sections and at least one channel alignment key. The at least one channel alignment key is sized to receive a thickness of two adjacent open liner sections. An erosion barrier insert may be placed betwee... | 09/13/2005 |
| 6923600 | Method of repairing and reinforcing piers using stones A method of repairing and reinforcing a pier using stones. The method includes installing a watertight caisson around a pier and removing water from the gap between the caisson and pier prior to repairing the pier. The method can also include removing impurities fro... | 08/02/2005 |
| 6719492 | Top arch overfilled system An earth overfilled arched structure includes a shallow arch spanning a clear space. The sides of the clear space are formed by curved or straight walls. Solidified zones of earth material (backfill or in situ) against the springs of the arch and/or behind the walls... | 04/13/2004 |
| 6540438 | Inflatable underground structure liner The apparatus is an underground structure liner based upon an inflatable liner structure. An acid resistant layer is the innermost layer of an inflatable liner, and the liner is coated with epoxy resin on its outermost surface, the surface which contacts ... | 04/01/2003 |
| 6457906 | Mine stopping A mine stopping installed in a mine passageway having air flowing through the passageway in a first direction includes a rigid wall extending across the passageway to close the passageway and an opening in the wall to permit the passage of air therethroug... | 10/01/2002 |
| 6419324 | Method of sealing off a mine passageway A method of sealing off a mine passageway. The method involves installing a plurality of vertical panels side by side across the passageway to form a stopping. The stopping has gaps between adjacent panels and gaps between the panels and adjacent mine sur... | 07/16/2002 |
| 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 |
| 6368020 | Lining element for a drilled tunnel The invention relates to a concrete lining element for a drilled tunnel, which element is formed as a ring segment and is internally reinforced, and a plurality of which ring segments can be joined together to form a ring, and a plurality of rings can be ... | 04/09/2002 |
| 6334738 | Prefabricated metal overcast having a crushable lower section A ventilation overcast comprises a frame member that defines a structure having a substantially inverted U-shape with first and second opposed side wall portions and a roof portion. A curtain member having a plurality of longitudinal corrugations therein ... | 01/01/2002 |
| 6328501 | Method of manufacturing a tunnel or shaft lining or pipeline A method of manufacturing a tunnel (10) or shaft lining or pipeline of segments (12), wherein each segment (12) comprises a concrete body (11) having an extrados (13) surface, an intrados (14) surface and first and second ends (15, 16) and first and secon... | 12/11/2001 |
| 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 |
| 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 |
| 6168846 | Liner strip for pipelines or tunnels A liner strip for lining an interior surface of a pipe including an extended plastic strip having T-shaped formations with reinforcing fibers integrally extruded in the liner strip for increasing the liner stiffness and tensile strength to resist forces i... | 01/02/2001 |
| 6164871 | Mine stopping having a swinging door A mine stopping comprising a wall extending across a passageway in a mine to close the passageway. The wall has an opening therein. A door is hinged adjacent the opening for swinging between a closed position in which the door closes the opening to inhibi... | 12/26/2000 |
| 6161989 | Antifouling wall structure for use in pipe and method of constructing the antifouling wall therefor A wall surface of a structure to be rendered antifouling is covered with antifouling panels caused to firmly adhere thereto and fixed. Not only can this work be conducted easily and quickly but also part of the antifouling panels can be easily replaced. T... | 12/19/2000 |
| 6129483 | Prefabricated metal overcast having a crushable lower section A ventilation overcast may comprise a plurality of support columns, each of which has an upper end and a lower end. A plurality of cross beams are connected between the upper ends of each of the plurality of support columns so that the support columns and... | 10/10/2000 |
| 6095719 | Process for constructing intake pipe With a method for constructing a water intake pipe, a vertical shaft 10 is constructed, and a shield tunnel 12 is constructed by causing a shield driving machine to advance from the vertical shaft 10 toward a seashore by breaking the wall of the vertical ... | 08/01/2000 |
| 6076995 | Segments One end of a circumferential joining end surface 2 of segments 1 which are joined together in the circumferential direction of an excavated tunnel is made the male side circumferential joining end surface 2a on which a male coupler 4 is provided, and the ... | 06/20/2000 |
| 6050746 | Underground reinforced soil/metal structures A method for controlling deformation of an erected structural metal plate culvert or underpass during backfilling of the erected structure comprises: building progressively a reinforced earth retaining system on each side of the erected structure by alter... | 04/18/2000 |
| 5980156 | Tunnel liner building method and building panels therefor Tunnel liners are formed from panels of arched sheet material. The panels include a central portion, inclined side portions and wing portions. One of the wing portions has a hook portion and the other of the wing portions has a receptacle portion. The hoo... | 11/09/1999 |
| 5888023 | Seal arrangement for tubular tunnel segments The invention relates to a seal arrangement consisting of two abutting structures of concrete, steel, reinforced concrete, cast iron or other materials and a sealing section of elastomeric material which bridges and seals the gap between the two structure... | 03/30/1999 |
| 5870871 | Sump liner and method of installation This invention includes repair of an existing underground sump without the need for costly and time consuming excavation. A plurality of liner-forming pieces are placed inside the underground sump to create a liner preferably substantially conforming to t... | 02/16/1999 |
| 5785456 | 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 unplasticized polyvinyl chloride panel including an interior channel through which grout may be injected. Upon the grout's curin... | 07/28/1998 |
| 5747134 | Continuous polymer and fabric composite The polymer and fabric composite includes at least two polymer sheets with fabric attached covering substantially one side of the polymer sheets. In one embodiment, one of the sheets has a strip of polymer along at least one edge not backed by the fabric.... | 05/05/1998 |
| 5725327 | Permanent mine bulkhead seal and method for constructing same A water-resistant mine bulkhead or seal is provided in which two walls are constructed across the mine entry. One of the walls is constructed in layers. After a lower portion of the layered wall is erected, a first layer of gravel is provided between the ... | 03/10/1998 |
| 5725328 | System and process for relining sewerage pipe sections A system for and process of relining transport lines such as sewerage pipelines having an inner tubular thermoplastic inliner, a tubular thermoplastic preliner disposed within the pipeline to be restored. The inner inliner being disposed concentrically an... | 03/10/1998 |
| 5556676 | Tunnel interior construction An element for lining the interior surface of a tunnel, which comprises a composite panel in which a fibrous layer is laminated over a hard substrate, and a fluoropolymer surface layer is laminated over said fibrous glass layer.... | 09/17/1996 |
| 5489164 | Method of connection The invention relates to a constructional element such as a tunnel lining, part of which is shown in the drawing, comprising adjacent segments which have facing surfaces between which there is a joint which is physically deformable under load. The joint c... | 02/06/1996 |
