Matches 1 - 50 out of 276 1 2 3 4 5 6 >
Match Document Document Title
7207632 Shield system for coal mining  
A mining system for remotely mining ores and minerals which protects against falling rock and allows evacuation of a miner and conveying system in the case of a cave in. A shield is advanced into a...
7055625 Self-propelled instrumented deep drilling system  
An autonomous subsurface drilling device has spaced-apart forward and rearward “feet” sections coupled to an axial thruster mechanism between them to operate using an inchworm method of...
6955232 Equipment for drilling vertical boreholes  
The invention relates to equipment for drilling a vertical borehole in hard ground, the equipment comprising: casing put successively into place in the borehole; a drilling machine having a...
6910834 Mine prop  
A mine prop is comprised of an elongate tube having a slenderness ratio that would generally allow buckling or kneeling of the elongate tube when exposed to a sufficient axial force. A plurality of...
6799809 Method and apparatus for remote self-propelled conveying in mineral deposits  
A method and apparatus for the mining of material from a seam includes a mining apparatus and a self-propelled conveyor capable of advancing or retreating in the seam on its own power and an...
6644753 Method and apparatus for remote self-propelled conveying in mineral deposits  
A method and apparatus for the mining of material from a seam includes a mining apparatus and a self-propelled conveyor capable of advancing or retreating in the seam on its own power and an...
6578926 Mining machine having stabilizing apparatus and stabilizing apparatus  
A mining machine having a stabilizing apparatus includes a mining machine and a stabilizing apparatus attached to the mining machine. The stabilizing apparatus includes a stabilizing element and a...
6505892 Softwall mining method and device  
A softwall mining method and device. Each of a plurality of mining devices comprise a supporting portion, an earth moving portion and a coupling mechanism for advancing the earth moving portion...
6431653 Tunnel-boring machine and method of using the same  
The tunnel rock drill ( 100 ) for driving a tunnel bore optionally in open or shielded mode comprises a shield tail ( 33 ), which is connected to the drill head ( 10 ) and which covers optionally...
5964305 Trench wall cutter  
A trench wall cutter with a drive mechanism which is attached to the cutting frame in a position which is spaced away from the bearing shield with a gear for driving at least one cutting wheel is...
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...
5915790 Tunnel boring machine  
A cutterhead is supported at the front part of a main frame so as to incline at a specified angle with respect to a vertical plane. The main frame includes (i) a roof support disposed at a position...
5890771 Tunnel boring machine and method  
A tunnel boring machine particularly adapted to operate at substantial depths below the earth's surface. The machine comprises a head section comprising a cutter head that is rotatably mounted to a...
5765925 Tunnel boring machine for hard ground and soft ground  
A tunnel boring machine for boring a tunnel through hard and soft grounds includes a front body, a cutter head mounted to the front body and having a cutter for boring a hard round, and a drive...
5649745 Inflatable gripper assembly for rock boring machine  
An inflatable gripper assembly for a rock boring or cutting machine is disclosed. The inflatable gripper assembly comprises a base member and an elastomeric sheet secured in a fluid-tight and...
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...
5527099 Tunnel boring machine anchor shoe structure and process of operating a tunnel boring machine having such anchor shoe structure  
The anchor shoes of a tunnel-boring machine arranged in a circular configuration are individually truncated by being tapered rearwardly so that the girth of the circular anchor shoe configuration...
5386741 Robotic snake  
This invention reveals improvements in a flexible robotic limb which can function as a robotic snake. These improvements are particularly pertinent to miniaturization applications such as catheters...
5360260 Tunneling machine with radially sweeping tool carriers  
In order to drift underground roads, tunnelling machines are used that have a rotatively driven boring head base body, a rigid first bit and rail heads that can radially sweep around axes of...
5333936 Low profile mining machine having a cutter mounted on a slidable carriage  
A cutter machine has cutter heads or rollers rotatably mounted on a pivoting cutter arm. It also has a loading ramp and a conveyor running in a direction towards the work face of the cutter machine...
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...
5255960 Tunnel drilling apparatus with drill waste removal  
A drill head for drilling a tunnel in rock or soil comprises a rotatable drill bit assembly and a cylindrical protecting tube. The bit assembly comprises a bit holder and a cylindrical drill bit....
5234257 Mobile mining machine having tilted swing axis and method  
A mobile mining machine for cutting a tunnel in rock has a wheel-like cutterhead assembly supported by a pitch boom assembly that causes movement of the cutterhead assembly in the vertical plane. A...
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...
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...
5205612 Transport apparatus and method of forming same  
Mining apparatus in which a cutting wheel supporting a plurality of roller-cutters rotates about a horizontal axis and is supported on a slewing boom for cutting a tunnel with a flat floor and roof...
5192116 Gantry-type mobile mining machine  
A gantry-type mobile mining machine includes a cutterwheel having an axis of rotation substantially parallel to the tunnel work face and carried by a boom assembly pivotally movable about an axis...
5192115 Tramming mobile mining machine  
A mobile mining machine for cutting a tunnel in rock has a wheel-like cutterhead assembly supported by a pitch boom assembly that causes movement of the cutterhead assembly in the vertical plane. A...
5135326 Articulated shield tunneling machine  
An articulated shield tunneling machine suitable for excavation along a curvature with an articulated shield having front and rear shield sections. In contrast to the conventional apparatus which...
5125719 Tunnel boring machine and method  
A tunnel boring machine having increased thrust capability is disclosed. The machine includes a rotatable cutter head for cutting material away from the face of the tunnel and a drive shaft and...
5076729 Tunnel-driving and support system  
A tunnel support machine for use in a tunnel forming system wherein the tunnel support machine follows a tunnel-driving machine during the driving operation. Through the operation of the tunnel...
5051032 Method and apparatus for continuously excavating shaft and tunnel  
A shield excavator excavates a shaft. Then, the excavator is caused to swing to change its posture and excavate a tunnel. Thus, the shaft and the tunnel is continuously excavated by the single...
5046783 Tunnel boring machine  
Tunnel boring machine comprising a transmission housing (11) which during boring is fixed relative to the tunnel. The boring head (15) is axially displaceable relative to an outgoing shaft (14) of...
5005911 Quadrishoe tunnel boring machine  
A tunneling machine body carrying a rotary cutterhead can be advanced continuously by exerting advancing thrust force on it, first by top and bottom jack bipods reacting from top and bottom anchor...
4915453 Floating shoe tunnel boring machine and boring process  
A tunneling machine body carrying a rotary cutterhead can be advanced continuously by exerting advancing thrust forces on it, first by top and bottom bipods reacting from top and bottom anchor...
4898496 Apparatus for underground tunneling  
The invention relates to an apparatus for underground tunneling. It has a working tube which can be driven in the drilling direction and a digging unit mounted therein, and it has a cutterhead...
4874267 Tunnel boring machine  
Telescopic tunnel boring machine including a front shield (10) and a rear shield (16) with a cutting head (14) at the forward end of the front shield. Rearwardly extending shutters can be moved out...
4869358 Conveyor belt system for a continuous mining machine  
A conveyor system for use with a continuous mining machine in a straight line shaft includes a plurality of cable support members equally spaced along the length of the conveyor within the mine...
4831939 Security screen  
A security screen having two rams to operate the screen which are located against the panel of the screen, the rams being connected at one of their ends substantially symmetrically relating to the...
4818025 Narrow opening mechanical miner  
A self-propelled mining vehicle is disclosed which is self supporting above the floor of a mine tunnel. The vehicle is adapted to be supported above the floor of the mine tunnel such that...
4804295 Shielded tunnel excavator  
A tunnel excavator has a substantially tubular shield having rotatably mounted on one end a motor-driven cutting disk rotatably carrying a multiplicity of roller cutters. The shield is comprised of...
4768835 Advancing system for coal winning machine  
The advancing system for a coal winning machine comprises a guide installed along a face conveyor, and an advancing mechanism connected with the machine. The advancing mechanism is accommodated in...
4705120 Drilling machine  
A drilling machine for drilling descending large boreholes in earth or rock tructures, comprises an elongated drill pipe driven by a drive machine positioned outside a borehole being drilled, a...
4696600 Method and apparatus for modifying the cross-sectional profile of an adit, tunnel or the like  
To modify a given profile of an adit, tunnel, gallery or the like, particularly a circular profile so as to give it the shape of a vault, a sequence of individual recesses are made in the...
4687375 Circular heading machine  
A circular heading machine for excavating tunnels by advancing a machine in stepwise fashion and erecting tunnel supports, having an elongate machine body at the forward end on which a forwardly...
4655493 Shield tunneling machine  
A shield tunneling machine comprises a shield body provided with a tubular head portion and a tubular tail portion disposed behind the head portion. The head portion and tail portion are...
4637657 Tunnel boring machine  
A tunnel boring machine for boring a curvilinear tunnel in earthen strata is described.
4627765 Tunneling machine  
A tunneling machine of the type having a leading shield, a trailing shield, an annular form connected to the trailing shield by respective cylinder units for the emplacement of the concrete behind...
4558906 Shield machine  
A shield machine for enlarging a portion of an existing tunnel includes an inner and outer double cylinder shaped shield machine body with a cylindrical outer shield portion and a cylindrical inner...
4550952 Mining machine with adjustable hood-scoop assembly  
The invention disclosed herein is a mining machine with an adjustable hood-scoop assembly. The machine provides a means to remove coal from the face of a seam and extract the removed coal to a...
Matches 1 - 50 out of 276 1 2 3 4 5 6 >