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| Number | Title | Issue Date |
| 5505814 | Welding device for welding a welding profile to a welding groove A welding device for welding a welding profile to an inner welding groove of a locking device, consisting of a first hollow profiled member inserted into a second hollow profile member, has a carriage with a housing whereby the carriage has a longitudinal... | 04/09/1996 |
| 5458722 | Method and locking device, for connecting in a liquid-tight manner wall sections of a multi-sectioned wall A method for connecting in a liquid-tight manner cooperating lock halves of a locking device of adjacent wall sections of a multi-sectioned wall introduced into a suspension includes providing a first lock half as an inner profiled member and a second loc... | 10/17/1995 |
| 5456590 | Counter-rotating compaction head for manufacturing concrete pipes A counter-rotating compaction head for manufacturing a concrete pipe is vertically positioned in a vertical mold within the longitudinal axis of the mold so as to be rotatable about and axially slidable along the longitudinal axis of the mold. The counter... | 10/10/1995 |
| 5316510 | Method and device for recycling coated glass A method for recycling of coated glass, especially for reuse in a glass melt, comprises the steps of crushing the glass; transferring the crushed glass into a mixing unit; mixing the crushed glass for a predetermined time period; during the mixing step, a... | 05/31/1994 |
| 4728222 | Arrangement for collecting seepage water from depositories To control the spread of water from a waste depository body, a drainage layer and a sealing body are provided below the depository body. A control room underlies a major portion of the depository body and a major portion of the sealing body for facilitati... | 03/01/1988 |
| 4697953 | Method and apparatus for subsequent underground sealing A method and apparatus for the subsequent underground sealing of an area, preferably of dumps. With the method, it is possible to seal dumps underground. Working pipes are introduced from a region outside a dump body. The region of soil between the workin... | 10/06/1987 |
| 4690590 | Method and apparatus for positioning diaphragms in vertical slotted walls which are supported by a suspension To reduce the shearing resistance at the surfaces of the diaphragm, and to decrease the buoyancy force, both of which greatly hamper the positioning of diaphragms or thin sheets in slotted wall suspensions, air bubbles are introduced at the bottom end of ... | 09/01/1987 |
| 4678369 | Method and arrangement for sealing off dumps to prevent seepage A method and arrangement for vertically sealing off dumps to prevent the seepage of water therefrom. A sealing wall is produced around the dump area which is to be sealed off. The sealing wall has at least one drainage sheet which extends over the length ... | 07/07/1987 |
| 4673312 | Method and apparatus for the underground installation of pipelines A method and apparatus for the underground installation of pipelines. The underground installation of pipelines is carried out by driving pipe sections into the ground. The earth is loosened at the driving face via a liquid jet, and the excess earth is tr... | 06/16/1987 |
| 4656743 | Arrangement for determining the position of a hollow section system which is pressed forward An apparatus for determining the position of a hollow section system which is pressed forward. Measuring apparatus are arranged one behind the other in the hollow section system. Measuring points are also provided. Each measuring apparatus has a light sou... | 04/14/1987 |
| 4647256 | Method and apparatus for producing underground pipes A method of producing underground pipes, with pipe sections being pressed ahead into the ground. For each pipe section, at least two partial pipe shells are used which are separated from one another in the longitudinal direction, and are joined about supp... | 03/03/1987 |
| 4623198 | Method for reducing compressed air losses when driving underground cavities supported by compressed air A method for reducing compressed air losses when driving underground cavities which are supported by compressed air. The part of the inner cavity face exposed by mining is sealed by a viscous medium after breaking away the earth. With a supply of propella... | 11/18/1986 |
| 4538521 | Recessible guide rail arrangement for a wheel-supported vehicle The invention is directed to a recessible guide rail for guiding a wheel-supported vehicle along a roadway structure. The vehicle is equipped with flangeless wheels or the like for coacting with a side wall of the rail to laterally guide the vehicle along... | 09/03/1985 |
| 4513504 | Method for determining the position of a pressed-ahead hollow-section line, and apparatus for implementing the method A method and apparatus for determining the position of a pressed-ahead hollow-section line, especially with any desired three dimensional curvature, and having measuring points permanently and securely arranged in the hollow-section line. The three dimens... | 04/30/1985 |
| 4501446 | Removal of fine-grained sediments from water bodies A method for removing fine-grained sediments from flowing or standing bodies of water. The sediment is dredged from the bottom of the body of water. The dredged sediment is dewatered and classified in a sieve plant. At least a fine-grained admixture mater... | 02/26/1985 |
| 4368924 | Driving shield A driving shield having a shield shell and a transverse wall for defining a work chamber, and a removal arm pivotally journalled on the transverse wall. The removal arm has a removal tool for mining or removing a face wall which also delimits the work cha... | 01/18/1983 |
| 4308933 | Overhead sound attenuating cover for roadways and railways An overhead sound attenuating cover arrangement comprising a support structure and cover elements operatively arranged on the support structure. The cover includes at least in part between individual cover elements spaces, whereby cover elements in the vi... | 01/05/1982 |
| 4232822 | Method of and arrangement for correcting the height of railway upper structures A method of and arrangement for correcting the height of a railway upper structure with a reinforced concrete plate thereon into which plate a reinforced concrete part as support for rail holding members is so inserted that the reinforced concrete part is... | 11/11/1980 |
| 4168915 | Rotary drum A rotary drum for treating, especially upgrading, waste material, which includes a cylindrical mantle with an inlet and an outlet respectively provided at opposite ends of the drum and which is provided with annular guides for supporting the drum on stati... | 09/25/1979 |
| 4160146 | Method for making reinforcing baskets for steel reinforced hollow concrete bodies A method for making grids or baskets of reinforcing rod or wire, especially for use in the construction of hollow concrete bodies, in which a group of circumferentially spaced first rods or wires moving in the direction of the length thereof have a second... | 07/03/1979 |
| 4121398 | Space framework A space framework for building up dismountable ceilings and walls which comprises pyramid-shaped elements each including reinforced concrete slabs with corners connected to steel profiles which are adapted to be subjected to tensile and pressure forces an... | 10/24/1978 |
| 4037979 | Anchoring arrangement, especially for pre-stressed concrete constructions An anchoring arrangement, especially for pre-stressed concrete constructions, for anchoring reinforcing means in the form of ropes, cables, wires and rods, by means of a sleeve and an intermediate layer arranged within the sleeve and defining an axially e... | 07/26/1977 |
| 4018251 | Machine for making reinforcing baskets for steel concrete posts, masts, pipes and the like A machine for making reinforcing baskets for steel concrete posts, masts, pipes and the like, which includes a device for displacing longitudinal basket wires, a winding device for helically winding other wire about the longitudinal basket wires, and a we... | 04/19/1977 |
