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WO/1998/028829A1 |
The invention relates to a switching device for mining purposes, comprising at least one housing, an electrical power component such as a contactor, an electric/electronic control unit and pertaining electrical lines. Renovation or inspe...
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WO/1998/024737A1 |
This invention relates to a process comprising the steps of: a) providing a fiber preform comprising a non-oxide ceramic fiber with at least one coating, the coating comprising a coating element selected from the group consisting of carb...
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WO/1998/019775A1 |
The invention relates to a method and a device for cleaning air masses even those with small amounts of contamination e.g. in tunnels, roads through gorges, road constructions and premises. The inventive method for cleaning heavily and s...
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WO/1998/019046A1 |
A method for installing a stopping (2) in a mine opening, said process comprising securely fixing in the mine opening a screen in the form of a mesh (4) having a backing and applying a mortar (5) to the screen to form a coating on the sc...
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WO/1998/019045A1 |
A method for installing a stopping in a mine opening, said process comprising securely fixing in the mine opening a screen of size 2 to 24 mesh, preferably 10 to 20 mesh, more preferably 12 to 16, and applying a mortar to the screen to f...
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WO/1997/049897A1 |
This invention relates to a fluid transfer system including two elongated fluid transfer chambers (10, 10') fluid inlet and outlet arrangements at each end of each chamber, oppositely directed one-way inlet and outlet valves in the inlet...
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WO/1997/046786A1 |
A hydromechanical cutter for soft solids such as coal has most of the cutting done by central fluid cutters, but includes a peripheral mechanical cutter to keep the bore hole of uniform diameter. Straighter holes can be formed. The cutte...
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WO/1997/046795A1 |
A mobile overhead cable distribution system (10) for an office or the like, comprising a plurality of horizontally elongate cable supporting members (16) connected horizontally in series and supporting thereon horizontally extending powe...
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WO/1997/033259A1 |
An intrinsically safe emergency light and sound system comprising an impact resistant IP54 rated steel enclosure in which high intensity light emitting diodes are housed (13) together with a speaker (16). Their operation is controlled by...
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WO/1997/021900A1 |
A self-advancing drilling system comprising a drilling apparatus, the drilling apparatus having at least one leading fluid cutting nozzle, means on the drilling apparatus to provide forward movement to the drilling apparatus, the drillin...
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WO/1997/017126A1 |
An apparatus for supplying dry air to cable-ducts, or similar via a supply tank, utilizing a network of air passages, valves, control means and two drying towers. The air flow in the apparatus can be controlled such that: alternately one...
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WO/1997/006536A1 |
The invention concerns an underground storage facility for the initial storage of waste transported in containers (34, 36), in particular radioactive waste such as spent fuel elements. The store has transport galleries (10) giving access...
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WO/1997/002200A1 |
An apparatus (10) for use in a conveyor train for continuously conveying a supply of coal provided by a machine working at a mine face to a remote floor conveyor is provided. The apparatus (10) includes at least one propelled conveyor as...
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WO/1996/041932A1 |
Stresses in an underground mine are determined by analyzing mechanical properties of mine site stratum (Figure 1, numerals 2, 4, 6 and 8) including orthotropic properties of at least one of Young's modules and Poisson's ratio. The mechan...
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WO/1996/039610A1 |
A system (10) for monitoring an earth and/or rock body (12) includes a plurality of sensors (14) spaced apart on a surface (16) of the body (12) for providing respective first signals indicative of the displacement of the surface (16) wi...
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WO/1996/030629A1 |
A mobile assembly (2) for continuously mining rock, sizing it and converting it to a slurry for pumping to a treatment station (3). The mobile assembly includes a continuous mechanical miner (5) arranged to cut rock with the cutting head...
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WO/1996/028640A1 |
In the process of the invention for the easy and rapid assembly of a correspondingly particularly suitable screwless suspension device for suspending and installing water troughs used as explosion barriers in underground mining and tunne...
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WO/1996/011324A1 |
Apparatus adapted for movement through a passage (16) formed in the ground, comprising an elongate element (13) and means for positioning a shroud (20) around at least part of the longitudinal periphery of the elongate element for engage...
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WO/1996/007814A1 |
An energy supply train for underground mining has several universal transport unit frames (UTU frames) (1) interconnected by drawbars and useful as elements of a suspended monorail. At least one of the UTU frames carries a heavy-duty tra...
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WO/1996/006313A1 |
A jet fan arrangement (1) for ventilating tunnels etc. in which the axis (8-8) of the fan is at an angle (a) to the supporting surface (4) so as to blow air away from the supporting surface and when the flow of air through the fan (1) is...
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WO/1996/005591A1 |
A sound absorber (1) has a bottom (3) and a structure (3) with hollow chambers (4) shaped as little boxes or cups with walls (5, 5', 6, 6'). The bottom (3) is joined, for example welded, to the structure (2) and the hollow chambers (4) a...
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WO/1996/002614A1 |
The invention concerns a method of enriching a mine or waste tip gas containing from 20 to 65 % methane by the following steps: a) the mine and/or waste tip gas is removed (2) and compressed to between 5 and 15 bar (3, 4); b) CO2 and/or ...
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WO/1995/030067A1 |
A highwall mining system for mining aggregate material from a seam (8) extending from a highwall (6) is disclosed. The system comprises a mining means (9) for cutting coal from the seam (8) to form a drive (10) in the seam (8) and a conv...
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WO/1995/024567A1 |
A bracket (3) for suspending a chain (19) or the like member is disclosed. The bracket (3) comprises a body portion (7, 9, 11) and a pair of slots (15) formed in the body portion for receiving links (17) of the chain (19) that are separa...
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WO/1995/020718A1 |
Apparatus for passively supporting overhead solids (2, 3) typically located in a mine, above a floor (5) are described. The apparatus comprises an arrangement of three generally H-shaped beams (7-9) formed as a right-sided archway. The n...
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WO/1995/014208A1 |
A borehole decking plug which is created by a self-expanding plastic foam. Two closed waterproof pouches, an inner pouch (101) and an outer pouch (103), each contain a separate component (107, 109) of the foam. The inner pouch (101) is c...
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WO/1995/010689A1 |
The invention provides caverns and methods for producing caverns in bedded salt deposits. In a preferred method, a first bore hole (19) is drilled into the salt formation (10) and a cavity (13) for receiving insolubles is leached from th...
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WO/1995/002747A1 |
A highwall mining system for mining aggregate material from a seam (8) is disclosed. The system comprises a mining means (9) for cutting aggregate material from the seam (8) thereby to form a drive (10) in the seam (8), a conveying means...
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WO/1995/002746A1 |
A highwall mining system for mining aggregate material from a seam (8) is disclosed. The system comprises a mining means (9) for cutting aggregate material from the seam (8) and thereby to form a drive (10) in the seam (8), a conveying m...
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WO/1995/000745A1 |
The proposed method involves: taking as the base indicator the maximum free water content in one part of a sample at pressures within the range Pcr from -220 bar to +220 bar, where Pcr is the critical pressure at which water is present i...
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WO/1994/020732A1 |
A mining pan handling device (1) for armoured face conveyors adapted to install or remove one or more such pans (13) to or from a mining face, which device comprises: a) a carrying frame (2, 4) supported movably by b) attachment means (5...
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WO/1994/019580A1 |
A support bracket for use in supporting overhead cables in mines comprising a post (1) having a first end (11) and a second end (12) with means (2) whereby it can be secured to a support. The second end (12) has limbs (15, 16) extending ...
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WO/1994/015072A1 |
A process of inerting the coal mine site formed by a coal cutting auger (16) at a coal face (14) to suppress methane/coal dust explosion includes introducing an inert gas to a site downstream of the coal face (14) in a sufficient volume ...
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WO/1994/011613A1 |
An arrangement (10, dashed lines) of bags (12-18) is adapted to be inflated (10, full lines) to form a bulkhead (20). A bag (14) or other flexible structure has an internal gusset (64) with a free end (66) that can flap to close a compar...
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WO/1993/008371A1 |
The invention relates to support devices, for example, as used to support service lines from the roof in an underground mine. A load-bearing member (23) and support bracket (22) are stacked together and temporarily fixed by means of a ta...
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WO/1992/010644A2 |
A launch vehicle (10) is provided for a continuous mining system including modular conveyor units (U) that may be connected together to form a conveyor train (T). The launch vehicle (10) includes an elongated frame (12) that holds a belt...
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WO/1992/010643A2 |
An apparatus (10) for mining aggregate material from a seam includes a miner (12) for cutting material from the seam and a conveyor (30) for conveying the won aggregate material from the miner for recovery. The conveyor is formed by a se...
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WO/1992/006280A1 |
An ore pass rush eliminator which comprises in the ore pass shaft (10) a channel (20) formed in the base of the shaft whereby excess water can pass to waste to avoid any build up of such water. The invention also describes means whereby ...
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WO/1992/000492A1 |
A device is provided for controlling the supply of air in a network of passages, e.g. in a mine, and includes a fan (10) having an electric motor (16) powered at a variable frequency. The device also includes a converter with an adjustab...
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WO/1991/017101A1 |
The device (1) disclosed comprises a driven thrower wheel (8) with scoop blades (10). The thrower wheel (8) is open at the circumference, but most of its circumference (13) is covered by a continuous belt (14) which also passes round gui...
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WO/1991/014827A1 |
An installation for air treatment in the area of a traffic route for motor vehicles (30) emitting air-polluting exhaust gases comprises an elongate shell (1) which completely or partly encapsulates the traffic route and in which outlets ...
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WO/1991/013236A1 |
A method for underground gasification of coal or browncoal in an inclined coal seam (1), in which a substantially uniform gasification or combustion front is maintained by filling the cavity (5) generated by gasification of coal with a f...
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WO/1991/006746A1 |
A method is disclosed for sealing an opening, for example a mine shaft or a tunnel. A bag (10) is placed in the opening and inflated with gas to conform to the periphery of the opening. A filler material is then introduced to fill the ba...
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WO/1991/006799A1 |
A modular services support system for supporting for example, pipes and cables along a tunnel wall, is made up of fibre-reinforced composite structural members connected together by slidably interlocking connector parts (25) in the form ...
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WO/1990/007629A2 |
Un dispositif pour creuser des galeries dans des exploitations minieres souterraines comprend un mécanisme de roulement, un chargeur à benne frontale équipé le cas échéant de marteaux de démolition et un convoyeur rotatif sans fin...
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WO/1990/006405A1 |
A platform vehicle for inspection of tubular shafts comprises a lower chassis (2) with steerable wheels (3), a work platform (4) which can be swivelled vertically with respect to the lower chassis (2) depending on the inclination to the ...
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WO/1990/001139A1 |
A transducer is foreseen comprising a rod (1) having at one end a bearing head (1a) on the rock, while the other end (3) acts on a charging cell (20). The transducer is provided in addition with an expander (2) integral with the charging...
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WO/1988/006211A1 |
The sludge which falls on to the water gates of underground workings and that which accumulates elsewhere than on the floor can be extracted with high solids concentration and transported by a mobile transfer device (2) having a raisable...
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WO/1988/002711A1 |
The track vehicle (1), comprising a body and two single-axle running carriages (40, 40'), is characterized in that its inside is provided with a seat (51) arrangement in pairs in the transverse direction of the coach. This arrangement of...
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WO/1987/004224A1 |
An actuating device for pipe-chamber feeders of hydraulic transport equipment comprising valves or other closing appliances having a closing element that is movable reciprocally between an open and a closed position, the improvement bein...
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