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| Number | Title | Issue Date |
| 8393828 | Boring machine steering system with force multiplier A boring machine includes a steering head which is located behind a cutter head. The steering head has a plurality of steering openings spaced around its periphery. A steering component is mounted adjacent to each steering opening, and each steering component includ... | 03/12/2013 |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7013937 | Apparatus and process for mining of minerals Apparatus for transporting mineral from a point of mining to a remote location, the apparatus including a mobile mineral breaker rig (MBR) having a mineral outlet, the rig including a fluid inlet pipe for receiving conveying fluid, a mineral inlet for introducing mi... | 03/21/2006 |
| 6926100 | Hole reaming apparatus and method An enhanced reaming apparatus and method are disclosed. A reaming assembly may have a motor and a pump that provide linear force, torsional force, and pressurized drilling fluid to a reamer to cause the reamer to enlarge the bore of a pilot hole. The reamer may have... | 08/09/2005 |
| 6899842 | Method and installation for laying a cylindrical pipe on a support A process and plant for laying a pipe in a trench comprising placing a flattened tubular preform in the trench, the perform having a reinforcement surrounding an inner seal, the reinforcement being impregnated with a resin, and inflating the perform in the trench. | 05/31/2005 |
| 6802673 | Tunnel boring with foamed composition A process of boring a tunnel using an earth-pressure balance shield boring tunnelling machine having a cutting head, an excavation chamber for soil removed by boring and conveying means for removal of said soil from the excavation chamber; wherein there is injected ... | 10/12/2004 |
| 6772134 | Control means for a horizontal boring tool Control apparatus for a horizontal boring tool is described which drives a boring lance via boring rods. The tool includes an input interface for receiving actual values of controlled variables of the horizontal boring tool, and an output unit for issuing control si... | 08/03/2004 |
| 6761415 | Trailer for a tunnel borer follower train A trailer for a tunnel borer follower train comprises a chassis provided with a plurality of wheels, the chassis at rest presenting a longitudinal axis and a longitudinal plane of symmetry that is vertical. The trailer also comprises at least two tanks mounted on th... | 07/13/2004 |
| 6644754 | Tunnel excavating machine A tunnel excavating machine having an excavating machine body can be moved forward by shield jacks. A rotatable cutter head is mounted in a front portion of the excavating machine body. An erector device for assembling segments in a ring form is mounted i... | 11/11/2003 |
| 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 |
| 6382732 | Cutter head, tunnel excavating machine, and cutter replacing method A cutter head is rotationally drivably mounted on a front portion of a tunnel excavating machine body, a plurality of cutter spokes are provided radially on the cutter head, a plurality of mounting holes are formed in a front surface portion of each of th... | 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 |
| 6357965 | Method, system and device for building a wall in the ground A wall is built in the ground by pulling a wall building device having cross-sectional dimensions which are substantially equal to the dimensions of at least a part of the cross-section of the wall through the ground, at least a part of the wall being for... | 03/19/2002 |
| 6347838 | Method for replacing cutters of tunnel-excavating machine, method for excavating tunnel, and tunnel excavating machine Cutter spokes are disposed on a cutterhead of a tunnel-excavating machine. Movable blocks, each having a roller cutter, are movably supported by each of the cutter spokes while being connected one another by means of a connection link. A gate mechanism is... | 02/19/2002 |
| 6305754 | Tunnel excavator with S-shaped soil plate A tunnel excavator includes a pair of cutters arranged side by side at a front portion of a tunnel excavator main body. These cutters rotate in opposite directions for excavating the earth to form excavation and for causing the excavated earth to move tow... | 10/23/2001 |
| 6287052 | Material and method for lubricating the metal surfaces of an earth-pressure tunnel boring machine A method of boring a tunnel with a tunnel boring machine comprising injecting into the formation to be bored just before the cutting tools of the boring machine and optionally into the internal discharge chamber of the boring machine, an aqueous foam cont... | 09/11/2001 |
| 6142577 | Hydraulic muck handling system for tunnel boring machine A tunnel boring machine for collecting earth excavated upon rotation of a cutter disk includes a non-pressurized chamber behind the cutter disk for collecting earth excavated by the cutter disk and discharging the earth with a carrying fluid. The machine ... | 11/07/2000 |
| 6092963 | Tail structure of shield driving machine The present invention relates to a tail structure of a shield driving machine, and in particular relates to an improvement technique of the tail sealing portion of this type of shield driving machine, in order to eliminate wearing of the tail seal. The ta... | 07/25/2000 |
| 6089791 | Tunnel construction method To construct a tunnel in a formation (11, 15) with zones of high hydraulic pressure (15), a gallery (13) is driven from the stable formation (11) toward the problem formation zone (15). At least one lock zone (19) with pressure-tight gates (23, 23') is co... | 07/18/2000 |
| 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 |
| 5931601 | Tunnel excavator A tunneling machine intended to stably carry out gripper replacement by restricting the load imposed on gripper jacks for the main gripper as much as possible during excavation of an inclined shaft. Such a tunneling machine comprises (1) a main beam that ... | 08/03/1999 |
| 5722800 | Seal and its production method for the creation of load bearings, removable earth masses for the construction of underground structures such as cavity structures A bulkhead for manufacturing underground structures such as earth cavities in a closed construction method, formed of sealing walls arranged as an enclosure and sealing earth masses to be removed against ground water, wherein the sealing walls are formed ... | 03/03/1998 |
| 5707176 | Earth discharge control system for small-diameter pipe propelling machine An earth discharge control system for a small-diameter pipe propelling machine controls the excavated earth discharging operation of the small-diameter pipe propelling machine. The small-pipe propelling machine propels a small-diameter pipe (2) joined at ... | 01/13/1998 |
| 5501548 | Method for controlling the direction of a shield tunneling machine and an apparatus therefor When a shield tunneling machine is deviated from the scheduled line while being propelled, the deviation of the shield tunneling machine from the scheduled line is detected and according to the data obtained on the deviation of the shield tunneling machin... | 03/26/1996 |
| 5478170 | Controlling apparatus for excavator An object of this invention is to improve precision in the operation, operating efficiency, and reliability of an excavator. A soil condition at a place where an excavator (1) is advanced is inputted, and a reference number of revolutions of a cutter (9) ... | 12/26/1995 |
| 5393172 | Shield tunneling machine A shield tunneling machine comprises a shield body having a soil chamber, an inside chamber and a partition wall. The soil chamber has a conical peripheral surface converging gradually rearward. A crankshaft having an eccentric portion is rotatably suppor... | 02/28/1995 |
| 5382114 | Tunnel excavation apparatus A tunnel excavation apparatus comprises a frame mounted on crawler tracks and provided with pistons comprising stabilizer feet, a power unit, a working unit, and auxiliary movement and positioning services. The working unit is arranged on an arm mounted o... | 01/17/1995 |
| 5380127 | Non-entry method of underground excavation in weak or water bearing grounds A method of excavating an underground area liable to flooding or collapsing during excavation, wherein the area is susceptible to disaggregation by high pressure water jet and is located above rock of strength suitable for drifting a gallery comprises dri... | 01/10/1995 |
| 5370479 | Shielding apparatus A shielding apparatus comprises a cylindrical shield body, a crankshaft supported by the shield body rotatably around the axis of the shield body, a plurality of rotors successively provided in the direction of the axis in a front region ahead of the shie... | 12/06/1994 |
| 5330292 | System and method for transmitting and calculating data in shield machine The present invention discloses a system and a method for transmitting data in a shield machine and for calculating the filling amount of a void by detecting the distance to the natural ground. The system and the method are capable of transmitting analogu... | 07/19/1994 |
| 5322391 | Guided mole Boring apparatus for forming a generally horizontal underground passage in soil for a utility conduit or the like that includes a tool head with a base portion and a nose portion mounted on the base portion. The nose portion is rotatable relative to the b... | 06/21/1994 |
| 5312163 | System for aiding operation of excavating type underground advancing machine A system for supporting the drive of an excavating type underground advancing machine is provided to lighten the operator's burden so that an unskilled operator can perform operation comparable to that of the skilled operator. In this system for supportin... | 05/17/1994 |
| 5295734 | Method and apparatus for drilling a tunnel A method for drilling a tunnel in rock which utilizes a drilling apparatus comprising a drill head having tools therein and at least one conveying tube is disclosed. The method utilizes roller units which support the conveying tube to transmit the forward... | 03/22/1994 |
| 5284403 | Control method and control equipment for drilling apparatus A method for controlling advancement of a drilling apparatus comprising a drill head having tools therein and at least one conveying tube is disclosed. The method utilizes changes in pressure sensed in the drill head or the conveying tube as a means for a... | 02/08/1994 |
| 5240350 | Apparatus for detecting position of underground excavator and magnetic field producing cable Magnetic field producers are disposed either at the leading portion of an underground excavator or at a reference position in front of the underground excavator. The magnetic field producers can be constituted by a plurality of rectangular loops disposed ... | 08/31/1993 |
| 5236284 | Drilling apparatus and method for its control A drilling apparatus and a method for its control maintains the alignment of a drill head while driving a tunnel. The control is achieved by manipulating the center of gravity of a drill bit unit with respect to a line determined by two supporting points ... | 08/17/1993 |
| 5228752 | Tunnel boring machine Tunnel boring machine whose driving shaft (4) adjacent to the boring head (6) is journalled in a bearing (12) which is intended to take up only radial forces. Shaft (4) is at its other end journalled in bearings (13,14) which take up both radial and axial... | 07/20/1993 |
| 5221160 | Subterranean connecting method for construction of shield tunnel and connecting apparatus therefor A disclosure is made of a subterranean connecting method and a connecting apparatus therefor which are suitable for use when two shield machines are used to excavate a pair of tunnel sections from both ends of a tunnel, and the tunnel sections are connect... | 06/22/1993 |
| 5211507 | Method of making a huge elongated space of square or rectangular cross section under the ground Disclosed is a method of making a huge elongated space of square or rectangular cross section under the ground. The outer shell of the huge elongated space is built in the form of integral arrangement of lateral shell-units having shielded passages therei... | 05/18/1993 |
| 5205613 | Tunnel boring machine with continuous forward propulsion A tunnel boring machine includes a cutterhead having a plurality of cutting units and being rotatable on a machine frame. Two sets of three anchor shoes float relative to the frame and are disposed circumferentially, with the anchor shoes of the two sets ... | 04/27/1993 |
