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| Number | Title | Issue Date |
| 7357458 | Boring rig A boring rig (14) for underground boring for excavating purposes and including a substructure (21, 22), a propulsion device, a stabilizing device (31, 32, 35, 36, 37, 38, 39, 42), and a boring unit (20) having a cutter head (29) an... | 04/15/2008 |
| 7192094 | Auger flight support system An auger support assembly for use with an augering system for mining which bores a pair of side-by-side holes through a coal seam using dual side-by-side augers. Each auger includes a drilling section which is followed by a series of auger flights for conveying the ... | 03/20/2007 |
| 7192093 | Excavation apparatus and method In one embodiment, an excavation method is provided that includes the steps of: (a) contacting a rotating powered cutting head 440 of an excavator 400 with an excavation face 452, wherein, at any one time, a fi... | 03/20/2007 |
| 7174958 | Drill string member A drill-string member includes at least one grooved portion on an outer surface thereof. A pair of axially spaced-apart grooved portions are typically provided, with two such pairs axially spaced along the longitudinal length of the member. A plurality of grooves ar... | 02/13/2007 |
| 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 |
| 7073869 | Shield tunneling machine A shield tunneling machine has a shield body and a cutter head rotatably provided at the forward end of the shield body in the excavation direction. Abrasive jet spray nozzles for spraying abrasive jet water are movably provided on the cutter head. Obstacles encount... | 07/11/2006 |
| 7047886 | Method and apparatus for removing obstructions in the mines The present invention is directed to a system for fragmenting rock obstacles and obstructions in mines. The system uses a projectile having a flat or concave nose and a detonating device that has a safety pin to prevent a striker from prematurely igniting the primer... | 05/23/2006 |
| 7040712 | Shield tunneling method and shield tunneling machine An excavating drive (22) movable backward/forward is accommodated in a turnable body (9) which in turn is turnable about an axis perpendicular to an axis of and in a skin plate (7). A cutter device (38) ahead of a rotor (22) in the... | 05/09/2006 |
| 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 |
| 6915864 | Cutter structure for shield machine In a cutter structure for a shield machine which advances by boring through a tunnel wall from inside an existing tunnel, the shape of an excavating surface on a work face formed by a cutter is set so as to have a smaller curvature than or an equal curvature to the ... | 07/12/2005 |
| 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 |
| 6612655 | Mining system and method featuring a bread loaf shaped borehole A method and apparatus for cutting a borehole substantially in the shape of a bread loaf within a mine includes four cutting systems. The first cutting system is a pair of three-armed, counter rotating, cutting heads which remove material from the mine fa... | 09/02/2003 |
| 6416134 | Underground auger system An underground augering system comprising a drill unit adjustably connected to a retrieving unit by interchangeable and adjustable connectors to provide for simultaneous drilling of one hole and the removal of auger flights from a previous drilled hole, a... | 07/09/2002 |
| 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 |
| 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 |
| 6332652 | Tunnel excavator with variable pressure water jets An excavator including a center shaft rotatably provided in a shield body in concentric relation to an outer cone. An inner cone for crushing excavated materials in cooperation with the outer cone is eccentrically provided on the center shaft. A cutter he... | 12/25/2001 |
| 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 |
| 6161635 | Drilling system drive steel A drive steel member for driving engagement with a rotary drilling machine, including a chuck adapter having main body and chuck seating elements and being constructed and arranged in fixed, sealing relation on on one end of the drive steel member.... | 12/19/2000 |
| 5934761 | Boring machine having hydrostatic bearings A boring machine having a cutter head rotatably mounted on a hydrostatic bearing. High pressure water is supplied to passageways between confronting bearing surfaces which react axial and radial loads and which are capable of relative rotational movement.... | 08/10/1999 |
| 5662387 | Cutter head and method for mining hard rock A cutter head for use in the removal of hard rock. The cutter head combines a standard cutting member, such as button bits or wedge-lock cutters, with cutting blades having a diamond cutting surface. The cutting blades cutting surface is positioned above ... | 09/02/1997 |
| 5575537 | Tunnel drilling machine or tube-driving machine The tunnel drilling machine or tube-driving machine for hard rock drilling has a drill head (19) supporting drilling tools (1 to 18) which has a diameter which is less than the diameter of the bore. The geometric axis of the circle of the envelope of the ... | 11/19/1996 |
| 5547260 | Auxiliary cutter units of a shield machine Preliminary cutter units of a shield machine provided with preliminary cutters capable of continuously excavating soil in a working place even if main cutters are worn away. In a shield machine comprising a cutter head which is disposed at the front end o... | 08/20/1996 |
| 5460432 | Cutter head for a tunnel excavator In a tunnel excavator for tunneling by rotating a cutter head provided in front of a shield body to thereby excavate the working face of a tunnel using disk cutters attached to the front surface of the cutter head, the cutter head is composed of an annula... | 10/24/1995 |
| 5199510 | Raise boring head and stem assembly method An improved method for assembling a stem within a mating, close fitting hole of a raise boring head by attaching an overhead beam to the body of the raise boring bit, supporting the stem with its longitudinal axis aligned with that of the beam and that of... | 04/06/1993 |
| 5193241 | Machine for removing slag and metal reminders from crucibles A machine for removing slag and metal remainders from crucibles or casting ladles includes a frame on which is disposed a carriage movable in an upwardly inclined direction on guides or rails. The carriage is provided with cutter device having a tool head... | 03/16/1993 |
| 5114213 | High pressure water assisted mining and tunnelling machine An accessory for a mining or tunnelling machine comprising a cutting drum is disclosed. The accessory comprises a radial piston pump mountable in the cutting drum, the pump comprising a plurality of piston and cylinder assemblies adapted to supply water u... | 05/19/1992 |
| 5096262 | Device for enlarging a chimney An apparatus for cross-sectionally enlarging a chimney flue includes a fluid motor; a milling cutter mounted on the fluid motor and being driven thereby for removing constructional wall material from walls defining the flue; a suspension device for suppor... | 03/17/1992 |
| 5032039 | Underground excavator An underground excavator includes a chamber defined in the forward section of an excavator body for receiving excavated material such as soil, sand, gravel, clay and their mixtures. A rotary cutter is mounted to the forward end of a rotary shaft for penet... | 07/16/1991 |
| 4858701 | Fluid-powered impact device and tool therefor A percussion tool usable as part of a single tool impact device or a multi-tool impact device. In each case, the tool is rotatably driven by a high-torque rotary actuator with the tool being longitudinally splined and received within a correspondingly lon... | 08/22/1989 |
| 4848844 | Overburden excavator The two ends of the luffable and swivelable arms of the gantry of an overburden excavator each have a horizontal bolt for a frame of the drive, on the axis of rotation or drive shaft of which is mounted a rotary cutter in the form of a cutter drum. The ro... | 07/18/1989 |
| 4637657 | Tunnel boring machine A tunnel boring machine for boring a curvilinear tunnel in earthen strata is described.... | 01/20/1987 |
| 4572303 | Machine for extracting, rough shaping and squaring blocks of stones, marbles and granites, particularly in quarries The machine comprises an automobile vehicle provided with a pivoting boom to which is pivotably mounted a beam carrying a pivotally mounted swingle-bar to which is coupled a rotary plate for supporting a frame provided with guiding uprights for a sawing u... | 02/25/1986 |
| 4556256 | Cutting appliances for use in tunnel driving operations In a tunnel driving apparatus, and particularly such apparatus where a work face is supported by fluid, a cutting appliance is employed which is composed of a swinging arm carrying a cutter head. The arm can range over the face to detach material therefro... | 12/03/1985 |
| 4548443 | Tunnel boring machine A tunnel boring machine including the following elements: (a) a full face rotary cutterhead; (b) a cutterhead support on which the cutterhead is mounted; (c) a gripper system carried by a gripper support frame for reacting thrust, steering, roll correctio... | 10/22/1985 |
| 4538858 | Apparatus for drilling and inserting a horizontal pipe A horizontal earth boring machine is disclosed of the type in which a carriage supports an engine rotatably connected to an auger, and a push ring. The carriage is movable along a set of tracks between a forward position and a rearward position. Hydraulic... | 09/03/1985 |
| 4191267 | Raise-boring A drill hole in a rock body is collared by drilling a pilot hole into a tunnel, advancing the pilot drill across the tunnel to drill a hole in the opposite wall of the tunnel aligned with the pilot hole, mounting the borer head on an arbor located across ... | 03/04/1980 |
| 4078622 | Road surface recessing device A device is provided for creating recesses for road surface markers in road surfaces which makes initially a cut sufficient to stabilize the device in the desired position and then fragments and discharges core material within a circular cut defining the ... | 03/14/1978 |
| 3972375 | Auger drive with auxiliary powertrain boxes Auger apparatus comprising a driving power train in which one or two auxiliary powertrain boxes are provided, two auxiliary boxes being used when two or more augers are to be driven, and one auxiliary box being used when only one auger is to be driven. Th... | 08/03/1976 |
| 3949815 | Shallow-hole kerf boring machine with auger on side-arm elevating assembly An augering machine and method for underground mining of minerals by selectively cutting shallow cylindrical kerfs into the face of a mine entry, comprising a wheeled vehicle having an independently elevatable side arm which carries a cutter head and an a... | 04/13/1976 |
