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| Number | Title | Issue Date |
| 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 mine. Within the shield, the miner and conveying system are also adv... | 04/24/2007 |
| 7128375 | Method and means for recovering hydrocarbons from oil sands by underground mining The present invention is directed generally to the combined use of slurry mining and hydrocyclones to recover hydrocarbons, such as bitumen, from hydrocarbon-containing materials, such as oil sands, and to selective mining of valuable materials, particularly hydroca... | 10/31/2006 |
| 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 |
| 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 |
| 6652190 | Method to install underground pipe casing A method and apparatus for installing a pipe casing underground without a trench for distances up to 400 feet with pipe casing up to 168 inches in diameter. The system uses a modified high energy piling hammer to mobilize the energy to drive the casings o... | 11/25/2003 |
| 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 into a mining face, and for advancing the supporting portion ... | 01/14/2003 |
| 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 |
| 5284404 | Moving steel form system A travelling steel form system includes a three-dimentional framework mechanism with multiple faces crossing and coupling with one another. A set of form panels are fixed to the outer side of the framework mechanism on more than two faces thereof, and are... | 02/08/1994 |
| 5269628 | Device for opening and supporting a headway A device for opening and supporting a headway in closed or open excavations comprises an envelope composed of blade- carrying heads (24) which can be driven individually or in groups, each connected to an end part. At least several end parts are designed ... | 12/14/1993 |
| 5174683 | Telescopic double shield boring machine The invention relates to a boring machine for digging tunnels in a wide variety of qualities of ground, of the type comprising a first front shield, containing the boring head, and the members for driving the same, and a second shield, fitted with posts o... | 12/29/1992 |
| 5152638 | Process and apparatus for excavating tunnels A machine for consolidating the soil for underground drilling excavations by means of the technique of the protective umbrella comprises a frame or chassis mounted on ground engaging motor driven crawler tracks and is provided with pistons having stabiliz... | 10/06/1992 |
| 5129764 | Device to feed reinforcement rods Device (26) to feed reinforcement rods (25), which is suitable to cooperate with an excavation equipment (14) in providing lengthwise reinforcements in tunnels, particularly in excavations of a great depth amounting to about twenty meters or more, the exc... | 07/14/1992 |
| 5090844 | Plant for digging and shoring up the walls of tunnels during excavation The invention falls within the art field of shields used in the excavation of tunnels for any given utility (rail, road, underground railway, sewers, pipelines, power cables etc.), and of all sizes. The plant disclosed provides a temporary support structu... | 02/25/1992 |
| 4966494 | Low load pipe for pipe jacking When carrying out replacement of an old main with a new one while crushing the old pipe line by a pipe jacking construction method in which the pipe line is formed by inserting pipes one by one horizontally from a launch pit without excavating the ground,... | 10/30/1990 |
| 4856936 | Form for concrete-placement tunnel lining A form for a concrete tunnel lining usable behind a tunnel excavator with a traveling shield is made of an inner tunnel-lining sheathing and a form front. The inner tunnel-lining sheathing is divided into a plurality of sheathing segments or rings movable... | 08/15/1989 |
| 4830535 | Knife shield driving device and method for the excavating and/or final supporting of galleries or the like The knife-shield driving device consists of drive knives (10, 12, 14, 16, 18) which can be acted on via a pushing device and are guided with respect to each other on their longitudinal sides. The guides consist of guide yokes (20) and wedge elements (30) ... | 05/16/1989 |
| 4808030 | Shield tunneling method and assembling and disassembling apparatus for use in practicing the method Shield tunnelling method and assembling and disassembling apparatus for use in practicing the method. A shield having shield jacks is actuated for drilling a hole in the ground. Inner forms and outer forms are assembled into a plurality of tubular units c... | 02/28/1989 |
| 4557627 | Apparatus and method for tunnel construction with shield drive In tunnel construction with shield drive locational concrete is brought in stages directly behind the shield as tunnel lining. In order not to have to interrupt the shield progress during concreting it is proposed to provide a shield tail element consisti... | 12/10/1985 |
| 4482270 | Drive shields for tunnel-driving apparatus A drive shield for tunnel driving has a plurality of cutters supported for longitudinal displacement on a frame. The cutters are hollow and contain double-acting hydraulic rams used to displace the cutters and the frame. The rams are linked to the cutters... | 11/13/1984 |
| 4474494 | Tunnel drive shield A tunnel drive shield has a front shield and a rear shield. The front shield is a knife shield, and the rear shield has a hood and a plurality of elongate members. The hood is connected to the front shield so as to be movable in all directions. Between th... | 10/02/1984 |
| 4459064 | Elongated underground construction having a uniform section and method of building this construction The reinforced concrete structure of this construction comprises tubular elements of permanent shuttering, connected by structural parts defined by external pile planks and internal permanent shuttering tangential to the tubular elements. The method of bu... | 07/10/1984 |
| 4439063 | Hydraulic control means A tunnel knife shield has a support frame, and a plurality of knife positioned side-by-side on the support frame. Each of the knives is associated with a double-acting hydraulic ram, the rams being used for advancing the knives, and for causing the suppor... | 03/27/1984 |
| 4412758 | Hydraulic control means A tunnel knife shield has a support frame, and a plurality of knives positioned side-by-side on the support frame. Each of the knives is associated with a double-acting hydraulic ram, the rams being used for advancing the knives, and for causing the suppo... | 11/01/1983 |
| 4398845 | Tunnel driving apparatus Tunnel driving apparatus incorporates a cutter shield with a plurality of drive members or cutters arranged side-by-side in a cylindrical array. The drive members are supported and guided for individual longitudinal displacement on a cylindrical continuou... | 08/16/1983 |
| 4355924 | Tunnel-driving apparatus Apparatus for use in driving tunnels or the like has a main shield composed of elongate drive members supported and guided on a rigid frame as known per se. Rams serve to advance the drive members and the frame in alternative to effect the driving operati... | 10/26/1982 |
| 4334800 | Tunnel drive shield A tunnel drive shield has an arcuate support frame constituted by a pair of foot segments, a pair of wall segments supported by the foot segments and a ridge segment connecting the tops of the wall segments. The foot segments engage the tunnel floor, and ... | 06/15/1982 |
| 4332508 | Shield for tunneling and mining A shield arrangement used for tunneling and mining in which a work chamber has an open front side located at the work face from which material is to be removed in tunneling and mining operations. Pressure is admitted into the work chamber for supporting t... | 06/01/1982 |
| 4305684 | Method of and apparatus for horizontally and vertically guiding a cutter drive shield A method of horizontally and vertically guiding a cutter advance mechanism involves adjusting and fixing each individual cutter plank of a plurality of cutter planks for a radial change of direction with respect to the apparatus and by guiding the individ... | 12/15/1981 |
| 4265565 | Tunnel drive shield A tunnel drive shield comprises a cylindrical shell supported by two axially-spaced frames. The two frames are movable, relative to one another, in the direction of tunnel advance. In order to guide the two frames accurately, guide means interconnect the ... | 05/05/1981 |
| 4252463 | Tunnel driving apparatus A drive shield of a tunnelling apparatus employs composite drive members or poling plates supported and guided for advancement in the driving direction on a frame. Each drive member has a front part pivotably connected to a rear part. The connection betwe... | 02/24/1981 |
| 4224004 | Knife shield A knife shield comprises a plurality of elongate knives which are arranged side-by-side upon a common support frame, the knives defining a generally cylindrical shield. Each knife is supported on the frame for movement in its longitudinal direction. At le... | 09/23/1980 |
| 4192632 | Support systems for mineral mining installations A mineral mining installation has a longwall scraper-chain conveyor with a machine, such as a plough, guided for movement back and forth alongside the conveyor to win mineral from a longwall face. A roof support system which may be arranged at the ends of... | 03/11/1980 |
| 4178111 | Apparatus for the excavation of subterranean tunnels Tunnel excavating apparatus comprises a hollow cylindrical shield adapted to be axially forced through subterranean material and having a circular cutting edge at a leading end portion. An inclined baffle and guide member has a central opening spaced upwa... | 12/11/1979 |
| 4155668 | Sealing means for the drive members of drive shields The drive members of a drive shield, which are mounted side-by-side for longitudinal displacement as is known per se, are provided with seals or packings to close off the gaps between adjacent members. Each seal or packing is composed of two flexible resi... | 05/22/1979 |
| 4143519 | Drive shield A drive shield for driving wide underground cavities comprises a plurality of knife shields arranged side-by-side transversely of the direction of advance. Each knife shield has a plurality of elongate knives displaceably mounted on a respective support f... | 03/13/1979 |
| 4120165 | Methods of and apparatus for driving tunnels Apparatus for driving tunnels or the like employs a drive shield known per se, with drive members supported and guided on a frame. Rear extension members are linked to the drive members, preferably through units permitting relative displacement therebetwe... | 10/17/1978 |
| 4118938 | Apparatus for and method of driving tunnels Apparatus for use in tunnel driving employs a drive shield of known type with elongate drive members arranged side-by-side and supported and guided by a rigid frame. Hydraulic rams are used to alternately advance individual members or groups of members an... | 10/10/1978 |
| 4112696 | Drive shield A drive shield for use in tunnelling operations includes a generally cylindrical cutting edge supported by a frame. A knife shield is telescoped together with the cutting edge, the knife shield having a plurality of elongate members (or planks). Each of t... | 09/12/1978 |
| 4095436 | Method of, and apparatus for, controlling the advance of a tunnel drive shield Apparatus is provided for controlling the advance of a tunnel drive shield. The drive shield is of the type having a plurality of elongate implements (or planks) which are supported and guided on a frame. Hydraulic rams are provided for moving the planks ... | 06/20/1978 |
| 4094152 | Apparatus for laying a pipe line Pipe-laying apparatus employs an advanceable shield with a set of elongate cutter planks supported for longitudinal displacement by a frame. Rams interconnect the planks and the frame and enable the shield to advance to form an open trench. Behind the shi... | 06/13/1978 |
