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| Number | Title | Issue Date |
| 5387407 | Process for the recovery of ammonia from flue gases For reducing nitrogen oxides in the flue gases of a firing plant, fresh ammonia water, i.e. an aqueous solution of ammonia (NH3), is introduced into the flue gas flow. For achieving a high degree of separation of the nitrogen oxide a superstoic... | 02/07/1995 |
| 5367116 | Process for the disposal of flue gas residues Solid residues obtained in flue gas purification, in particular flue dusts, are disposed in an environmentally compatible and economical manner by acid extracting heavy metals from the residues, precipitating the heavy metals from the extract, separating ... | 11/22/1994 |
| 5340232 | Manhole cover The invention concerns a manhole cover with a frame (1) and a grating (3) or cover fitting flush with the frame (1). In order to secure the cover (3) in such a way that it can be easily removed and put back in place, a one-piece securing element (4a) is a... | 08/23/1994 |
| 5246578 | Filter press and cleaning means therefor In order that higher demands on the purity of the separated liquid can be satisfied, a cleaning plant (12) having wash chambers (13a,b) for the cleaning of the filter plates (8) is arranged in longitudinal direction alongside of a filter press (1). By mea... | 09/21/1993 |
| 5238384 | Apparatus for producing a composite pipe in a rotating drum The components forming the layers of a composite pipe are successively introduced into a rotary drum (1). Initially, a plastic reinforcing layer (8), including a fibre reinforcement, is introduced into the drum, the ends of the drum (1) being bounded by r... | 08/24/1993 |
| 5230293 | Method and apparatus for controlling a refuse incineration plant A multi-loop control system and a method for using the control system to even out the generation of heat produced by a refuse incineration plant. The quantity of steam generated is controlled as a primary controlled variable and the oxygen content of the ... | 07/27/1993 |
| 5160213 | Covering for a ground opening A covering for a ground opening includes a frame in which a cover can be inserted. The frame has a recess for receiving a retaining web shaped onto the edge of the cover. A niche with a sloping bearing surface is formed in the frame at a distance from the... | 11/03/1992 |
| 5071177 | Locking device for the positive holding of a cover or grate in a frame In a cover-frame assembly for a manhole or the like a locking device is provided, which comprises a closing member having at least two horizontal arms and a mounting rod provided with a bearing and actuating device. The mounting rod and the bearing and ac... | 12/10/1991 |
| 5056955 | Locking device for coverings for manholes and other ground openings A locking device for a covering comprised of a frame and a cover includes arms, which are inserted in depressions or bores formed in the frame and/or cover, whereby they undergo elastic deformation and consequently form a frictional engagement with the co... | 10/15/1991 |
| 5045292 | Process for the removal of nitric oxides from flue gases Nitric oxides are removed from flue gases by the spraying-in of a liquid containing a reducing agent. The atomizing agent necessary for forming the liquid into individual droplets and for the transportation of the droplets is introduced together into the ... | 09/03/1991 |
| 4952094 | Ground water drain The ground water drain comprises a frame and a grating inserted in the frame. The grating has a central bar and a plurality of crossbars arranged normal to the central bar. Holding portions are provided in the frame over its support for the grating. Proje... | 08/28/1990 |
| 4925337 | Manhole covering The manhole covering comprises a casing, a base frame and an adjusting device. A two-part base frame has a plurality of bores, which are aligned with pockets located in the base part of the casing. In each pocket is inserted a screw nut, into which is scr... | 05/15/1990 |
| 4904120 | Frame for forming coverings on ground openings A frame for forming coverings for ground openings and method of assembling such frame are disclosed. Frame parts for assembling the frame are provided at their ends with connecting lugs, which are arranged at different levels. On fitting the frame, the tw... | 02/27/1990 |
| 4876916 | Cast shafts, particularly camshafts An elongated generally cylindrical iron shaft is cast as a single piece. The shaft has a longitudinal axis and has a centrally disposed longitudinal hollow channel extending completely therethrough along the axis. The shaft has a plurality of transverse c... | 10/31/1989 |
| 4778981 | Electrically weldable sleeve for joining thermoplastic pipeline parts The electrically weldable sleeve has a tubular sleeve member, heating elements arranged on the inner wall of the sleeve member and terminals for an energy supply. A material recess in the form of slots is provided in the edge zone of the boundary area of ... | 10/18/1988 |
| 4764106 | Burner for use in a rotary drum of a combustion furnace In a burner, particularly for use in a drum of a combustion furnace or incinerator for flowable, pump-deliverable waste materials, a lance is provided for introducing the fuel and a nozzle is placed on the end thereof. The lance can be surrounded by a fir... | 08/16/1988 |
| 4712652 | Elevator for transporting people and goods with an annular travelling cabin The travelling cabin comprises a plurality of closed, individual cabins, whereof the chassis is movably supported on a circular rail. The cabins are interconnected by upper and lower coupling rods. For the rotary movement of the cabins, the cage is provid... | 12/15/1987 |
| 4707272 | Method for controlling and optimizing the operation of a perforated belt press for filtering slurry A level measuring sensor is arranged at the start of the straining zone in the perforated belt press and this in particular measures the level change and then regulates the flocculant inflow. In order that the level in the straining zone is stabilized, th... | 11/17/1987 |
| 4703150 | Weldable connecting member for connecting or joining thermoplastic pipe elements The connecting member has a sleeve body and a resistance heating wire embedded therein with terminals to a power supply. By heating the resistance heating wire, a welding area between the sleeve member is plasticized and welded. For checking the weld quan... | 10/27/1987 |
| 4648633 | Socket joint The spigot end of one pipeline element is inserted in the socket end of the other pipeline element and is sealed by a gasket. To the end face of the socket end is connected a thrust preventing ring, which is secured by claws to part of a collar. A retaini... | 03/10/1987 |
| 4625660 | Auxiliary apparatus for discharging incineration residues of furnaces, particularly refuse incinerators An auxiliary apparatus with a trough or tank, to which the incineration residues are supplied by means of a drop shaft, a movable piston for moving the incineration residues from the trough to a discharge chute and at least one opening for inspecting and ... | 12/02/1986 |
| 4599951 | Apparatus for discharging incineration residues from furnaces, particularly refuse incinerators A water-fillable trough receives the incineration residues from the drop shaft of a furnace. A partially water-fillable discharge chute slopes upwards from the trough and is provided at its upper end with an overflow edge. A reciprocatible piston conveys ... | 07/15/1986 |
| 4594113 | Process for producing reinforcing steel in the form of rods or rod wire For the production of a reinforcing steel with a higher yield point and good weldability and toughness, microalloying elements are alloyed with the steel and their proportion represents 0.02 and 0.06% vanadium and 0.01 to 0.02% nitrogen, said proportions ... | 06/10/1986 |
| 4563278 | Belt filter press with ribs for filtering a heavy liquid A roller is provided with ribs directed outwardly from its face which permit the formation of cavities between the circumferential surface of the roller and the screen belts entrained thereon so that continuous channels are formed on the circumferential s... | 01/07/1986 |
| 4530520 | Electrically weldable bushings A bushing for joining the ends of fluid line conduits, or similar elements, comprising a body of thermoplastic, in which is embedded, in helical form, a resistance wire. The wire has a low coefficient of thermal expansion, permitting the thermoplastic mat... | 07/23/1985 |
| 4530521 | Electrically weldable socket for joining pipe members A socket for joining the ends of conduits, pipe or the like comprising a body of thermoplastic material in which is embedded, in a helical coil, a resistance wire strand formed of a plurality of juxtaposed individual thin wire elements, the wire elements ... | 07/23/1985 |
| 4498185 | Process for preventing burn-off on a current-conducting electrode for metallurgical furnaces and electrodes The electrode has a durable upper part and a consumable tip. A plurality of copper tubes extend through the upper part. The connection to the consumable tip is by means of an intermediate plate and a nipple, the latter containing ducts for the connection ... | 02/05/1985 |
| 4463688 | Grate block for a refuse incineration grate An improved grate block includes a blow-out channel terminating at a blow-out opening through the face of the block, the opening having pre-determined dimensional relationships with respect to the size of the front face of the block. The ratio of the widt... | 08/07/1984 |
| 4461705 | Endless chain driven rack and pinion displacement device for filter presses Apparatus for separating and displacing the plates of a filter press, one by one, is provided with a rail mounted above and extending along the length of the press on which a trolley is supported. The trolley is movable reciprocably along the rail by an e... | 07/24/1984 |
| 4362616 | Apparatus for moving the filter plates of a filter press A filter press having a plurality of plates adapted to be arranged in abutting relationship in an operating position and to be separated from the operating position for cleansing, replacement or the like, having a pair of first and second reciprocable con... | 12/07/1982 |
| 4350102 | Combined combustion and melting furnace for solid, pasty and liquid waste materials A rotatable drum is equipped at a front end with a burner for liquid waste materials and at a rear end has a tiltable charging mechanism for solid waste materials and waste materials stored in barrels. The rear end of the drum is sealed by a fixed casing ... | 09/21/1982 |
| 4315712 | Loading method and device for feeding waste-filled containers into a rotary incinerator A loading method and loading device for feeding waste-filled containers into a rotary incinerator, wherein open topped containers are filled with liquid, pasty, or solid waste materials and are fed sequentially using a reciprocating ram via a slide onto a... | 02/16/1982 |
| 4279516 | Container for pasteurizing sludge A vertically standing, slender, cylindrical flow container with an upper intake connection for crushed raw sludge already heated to a pasteurization temperature and a lower outlet connection for pasteurized sludge. A slowly rotating guide member is incorp... | 07/21/1981 |
| 4243635 | Waste incinerator exhaust gas treatment and apparatus The disclosed treatment is for the removal of hydrogen halide constituents of an exhaust gas by means of a dry scrubbing agent to which the gas binds. The agent is sprayed into the gas in finely divided form just prior to flow of the gas through a registe... | 01/06/1981 |
| 4202280 | Furnace flue apparatus for improved fly ash separation The disclosed apparatus is disposed in the "U"-section deflector at the bottom end of flues connected to each other in a multiple-flue, vertical flue furnace. A deflecting plate and two associated projections, one on the plate and the other on the wall, i... | 05/13/1980 |
| 4188892 | Method and apparatus for removal of fly ash from a waste incinerator with liquid slag discharge After the fly ash is removed from the flue gases by a separator, it is introduced into a combustion chamber which may be either the primary combustion chamber of the furnace or a separate chamber in a secondary combustion chamber. There, it is burned unti... | 02/19/1980 |
| 4132640 | Process for the hygienic elimination of sewage containing salt-containing organic substances A process and system for hygienic elimination of sewage having salt-containing organic substances as a constituent thereof. The sewage is concentrated by evaporation and the salt and organic substances are fed into a combustion chamber. The organic substa... | 01/02/1979 |
| 4117311 | Electric welding muff A thermoplastic synthetic resin sleeve to be slipped over the end of a tubular member to be joined to another such member has a winding of resistance heating wire adjacent the inner surface of the sleeve. Connectors at the ends of the wire are provided to... | 09/26/1978 |
| 4100255 | Combustion of refuse containing chlorinated hydrocarbons Chlorinated hydrocarbons are separated from refuse, typically municipal refuse, and combusted in a separate combustion chamber within an incinerating furnace, the special combustion chamber being separated spatially, and the material containing the chlori... | 07/11/1978 |
| 4056068 | Process for conditioning flue gases in waste material incineration plants with heat utilization A process for conditioning flue gases in waste material incineration plants with heat utilization. Secondary air is introduced into the combustion chamber above the combustion grate. The flue gases are moistened prior to entering the gas cleaner by water ... | 11/01/1977 |
