Abstract: External gear pump, comprising: a casing (3a, 3b) with a gear chamber (4), comprising an inlet (5) for a fluid on a low pressure side and an outlet (6) on a high pressure side and comprising axial and radial sealing stays (7, 8); toothed wheels (1, 2) being in toothed mesh, wherein the external toothings of the wheels (1, 2) form delivery cells (10) for the fluid which are axially sealed off by the axial sealing stays (7) and radially sealed off by the radial sealing stays (8); and at least one pressure fluid supply (15, 16) through which pressure fluid may be supplied to the low pressure side, wherein the at least one pressure fluid supply (15, 16) opens on the low pressure side into a delivery cell (10) which is radially opposed by one of the radial sealing stays (8).

Abstract: A roller body for a roller, for pressure-treating or temperature-treating or combined pressure- and temperature-treating a web-shaped medium, for example paper, includes a casting body made of an iron-based alloy comprising graphite lamellae. Particular regions of the roller body are placed under tensile stresses during or after production. The stresses being applied are larger than those which occur in these regions during operation of a roller. The additionally applied tensile stresses trigger local plastic deformations in peripheral regions of the graphite lamellae, such that once the tensile stresses are no longer applied, the roller body behaves elastically and no longer permanently deforms up to the stress level achieved.

Abstract: The invention is related to a pump, preferably a positive-displacement pump, comprising: a) a rotary drive member (1) driven at a speed dependent on a speed of a driving motor; b) a casing (3); c) and a first feed wheel (5) arranged in said casing (3), said first feed wheel (5) being coupled to said rotary drive member (1) for introducing a torque; d) said first feed wheel (5) forming, with the walls of said casing alone or in conjunction with a second feed wheel (6), a delivery space (7) comprising a low-pressure side (8) connected to a pump inlet port and a high-pressure side (9) connected to a pump outlet port; wherein: e) limiting delivery of said pump is achieved by using a magnetic clutch (11-17) which couples said rotary drive member (1) to said first feed wheel (5) for transmitting said torque; f) an input half (11-14) of said magnetic clutch (11-17) is non-rotatably connected to said rotary drive member (1), and an output half (15-17) of said magnetic clutch (11-17) is non-rotatably connected

Abstract: A roll for thermal and mechanical treatment of a web-shaped product, for example paper, comprises a roll body (1), thermal treatment conduits (2), insulating devices (4, 5; 4a, 5), a trunnion flange (3), and actuators (8). The insulating devices are capable of elongation in the thermal treatment conduits in the longitudinal direction of the conduits. The treatment conduits are for a thermal treatment fluid and are oriented in the roll body in the vicinity of the surface of the roll body. The trunnion flange is applied to the roll body, and the actuators are mounted in the trunnion flange and connected to the insulating devices. The actuators are mounted shiftable and fixable in the longitudinal direction of the thermal treatment conduits and are connected to the insulating devices for joint shifting.

Abstract: A variable-delivery external gear pump comprising a casing, at least one rotatively driven pair of gears comprising two intermeshing spur gears, which form with shell surface areas of the casing and axial sealing surface areas a delivery space comprising a low-pressure side connected to a pump inlet port and a high-pressure side connected to a pump outlet port, and a piston, serving to rotatively mount one spur gear of the pair of gears, said piston being shifted relative to the other spur gear of the pair of gears so as to vary the delivery of the pump together with the one spur gear by charging the high-pressure side with fluid against the force of a return element, wherein formed in at least one axial sealing surface area adjoining a sealing land of the sealing surface area is at least one pocket connecting a zone of deepest tooth engagement of the spur gears to either the pump outlet port or the pump inlet port.

Abstract: The invention relates to a method of producing a grinding roll in which a roll tire made from a highly wear-resistant bainitic cast material is applied to the basic roll body. In order to create a roll tire with particularly high reliability against fractures and with relatively high wear resistance and compression strength, the roll tire is produced from a ductile bainitic spheroidal graphite cast material having a breaking elongation of approximately 0.1 to 2.5% and a compression strength of approximately 1,000 to 1,800 Mpa.

Abstract: A brake disc has friction ring (4) and a bearing part (1) coupled to the friction ring (4) by linking elements (3). Several linking elements designed as pins, bolts (3) or the like distributed around the circumference of the bearing part (1) and coupled to the bearing part (1) project into recesses (bores) (8) in a circumferential wall (7) of the friction ring (4). The bearing part may be a pot, the wheel hub (17) or the wheel rim.

Abstract: A supply pump for lubricant or heat transfer liquid of a conventional design is driven by a drive unit independently of the consumer of the lubricant or of the heat transfer liquid. In the event of the failure of the drive unit a forced connection occurs between the pump and the rotating parts of the consumer in order to ensure its supply with the lubricant or the heat transfer liquid at least for a sufficient emergency period. By the independent drive of the supply pump the supply to the consumer can be controlled according to the consumption of lubricant or heat transfer liquid independently of its individual operating characteristic or operating state.

Abstract: An exhaust gas filter employed to remove harmful components from exhaust gases, more particularly from exhaust gases expelled by combustion engines, includes flow channels or chambers having gas-permeable walls. The walls are formed by a band having compression-moulded material and spacers with the band wound into a spiral. The spacers serve to form flow channels by maintaining a space between the individual windings of the band. The band and, if required, further parts of the proposed filter are then sintered together to form a unit.

Abstract: A catalyzer arrangement for the exhaust gases of an internal combustion engine in which the catalyzer body (6, 7) is formed from a weave, knit or fabric of metal fibers, metal chips, metal wires, metal powder or a mixture of them which is pressed together in several layers (11) to form a pack in the outlet region (4) of the cylinder of the internal combustion engine in front of the exhaust gas manifold (5) and/or in the inlet region of the exhaust gas manifold (5). In addition, or as an alternative, the cylinder crown (8) in the cylinder (2) of the internal combustion engine can also be provided with a catalyzer body (9).

Abstract: A filter for the separation of impurities from waste gases, in particular from the exhaust gases of an internal combustion engine, possesses a filter body, which consists of a plurality of compression moulded and high temperature resistant filter plates (10), in particular made of sintered metal powder, metal filings, metal fibres or a mixture thereof, which are disposed above or next to one another and between them form a plurality of flow ducts. To form inlet ducts (3) and outlet ducts (4) the flow ducts are open at one side and are closed on the other side. Walls of the filter plates (1) lying between the inlet and outlet ducts (3, 4) represent filter surfaces. Heat conducting sheets (5) are inserted into the inlet ducts (3).

Abstract: In a process for the manufacture of a gear wheel in an internal geared wheel pump, which wheel consist of two half-wheels (2A, 2B), which are respectively equipped with overflow ducts (3) constructed as half cavities (4A, 4B), into which balls can be inserted, the half-wheels (3A, 3B) are joined so that the complete overflow ducts (3) are formed from the half-cavities (4A, 4B) and the teeth (5) of the gear wheel (1) lie over one another in alignment. The insertion of any valve balls into the half-cavities (4A or 4B) of a half-wheel (2A or 2B) is performed before a welding operation and the half-wheels (2A, 2B) undergo a capacitor discharge welding process.

Abstract: An exhaust gas filter and/or a catalytic converter for the removal of harmful constituents from the exhaust gas of an internal combustion engine is provided with a feed duct (6) to a filter or converter unit (1) made from metal materials, which form a unit penetrated by cavities, through which the exhaust gas is conveyed, from compression-moulded wires or fibers as a tangled mass, braiding, knitted fabric or woven cloth or in powder, granular or chip form, and with a delivery duct (7) for the exhaust gas purified by the filter or converter unit (1). The filter or converter unit (1) is also constructed as a heat exchanger unit for the exhaust gas to be cleaned.

Abstract: A filter or catalyst body for removing harmful constituents from the waste gases of an internal combustion engine, especially a diesel engine, is provided with at least one fabric layer of metal wires or metal fibers. Sintering material in the form of powder, granules, fiber fragments or chips is introduced into the meshes and is sintered on to the wires or fibers. The woven fabric is in the form of a twilled wire fabric (1), sintering material (4) being introduced into the meshes (5) thereof and being sintered together with the wires or fibers (2, 3).

Abstract: A filter for the separation of impurities or contaminants from a fluid or gaseous medium, especially of harmful components from the exhaust fumes of an internal combustion engine, with a filter body having a plurality of inlet and outlet channels, whereby the inlet channels are separated from the outlet channels by filter walls forming reaction spaces. The filter bodies consist of a plurality of compression molded, high-temperature-resistant filter plates which, arranged one above the other, form a plurality of flow channels between themselves. For the formation of inlet and outlet openings, the channels are each open on one filter body end face and closed on the opposite end face. The channel closure and the connection of adjacent filter plates takes place alternately on each end face by two adjacent filter plates being pushed into and tightly surrounded by stirrup parts which extend over and grip the entire width of the filter plate adjacent end edges.

Abstract: In a process for the manufacture of brake discs, in particular of ventilated brake discs, a top runner is formed in a top box (cope), from which the brake disc is cast approximately centrally. The molten metal is uniformly distributed using star-shaped riser ribs.

Abstract: A filter for the separation of impurities from exhaust gases, and in particular, from the exhaust gases of an internal combustion engine, is disclosed. The filter is provided with a filter body comprising a plurality of compression-moulded and sintered filter plates having high temperature stability. The plates are made from powdered metal, metal filings, metal fibers or a mixture thereof, which are disposed over one another or behind one another, and are spaced by spacers to form a plurality of flow ducts between them. The flow ducts are open on one end and closed on the other, with the walls of the filter plates lying between the inlet and outlet ducts representing filter surfaces. One insert or several inserts consisting of catalytic materials or coated with catalytic materials are inserted into the outlet ducts.

Abstract: A device for use in heating or incineration plants for use as a waste gas filter to eliminate and/or convert harmful elements in the waste gas is disclosed. The device of the subject invention can eliminate soot and soot-like products, or it can serve as a heat exchanger or as a mixing component for a furnace. The device of the subject invention comprises a sintered body made of one or more compression molded highly heat resistant sintered parts. The sintered body manifests high porosity and/or a multitude of intake and outlet channels.

Abstract: In a process for the manufacture of a filter for liquid or gaseous media, especially for exhaust gases of combustions engines, the filter is formed from one or several filter plates out of a mesh, network, reticulation or fabric of metal wires. The filter body of a plurality of layers or plies of wires is brought between the electrodes of a resistance welding unit and subsequently a resistance welding is performed for partial connection of the wires to one another by spot welding.

Abstract: A filter is disclosed for treating a gaseous stream to remove therefrom undesirable components, especially from exhaust gases of engines, and particularly from internal combustion engines, such as, for example, Diesel engines and the like. The filter includes a filter body or element having a plurality of inlet and outlet channels, with the inlet channels being separated from the outlet channels by walls or partitions to provide reaction chambers. The filter body is made a high-temperature-resistant, sintering material, and can be made of metal wire or metal chips which are compacted and subsequently sintered.