baber/WOPTO huggingface dataset:
Patent DE-3130310-A1 (DE)
Title: Circuit arrangement for producing an AC voltage which can be regulated
Inventor: DOHRMANN GUENTER ING GRAD
IPC: H02M7/48
Filed: 1981-07-31
Abstract: The invention relates to a circuit arrangement for producing an AC voltage from a DC voltage. The form, amplitude and frequency of the AC voltage can in this case be predetermined in a required-value stage, a magnitude signal and a polarity signal being obtained from the control deviation by means of a required value/actual value comparison. The magnitude signal controls a variable pulse width switching regulator (on-off controller, chopper-type regulator, chopper regulator, switched-mode regulator) of a voltage converter, while the polarity signal alternately switches on (via a comparator) two switching stages which are allocated to the polarities of the output voltage. <IMAGE>
Patent DE-3132242-A1 (DE)
Title: Dental/orthodontic handpiece
Inventor: SCHUETZ WINFRIED DR
IPC: A61C7/14
Filed: 1981-08-14
Abstract: The invention relates to a dental/orthodontic handpiece comprising an essentially straight handle (2) and a working head (5), especially for the direct placement of adhesive brackets (9) on dental surfaces. Between the handle and the working head the instrument is roughly of U-shaped design, so that the handle is outside the oral cavity during use. During work on molars the angle of the mouth and the cheek are located in the U-shaped region of the handpiece. Moreover, the working head is located in the extension of the mid-line of the handle. This design permits controlled handling of the instrument. <IMAGE>
Patent DE-3133891-A1 (DE)
Title: Circuit arrangement for series-connected loudspeaker telephone stations
Inventor: SCHOEN SIEGFRIED
IPC: H04Q5/02
Filed: 1981-08-27
Abstract: In series-connected loudspeaker telephone stations (T1, T2), if the first station (T1) carries out on-hook dialling with the aid of an ancillary dialling unit (WH), dialling which is simultaneously performed on a downstream telephone station (T2) is intended to be prevented from interfering with the dialling which is performed automatically with the aid of the ancillary dialling unit (WH). To achieve this, an indicator (I) is provided which identifies the connection of the ancillary dialling unit (WH) and which controls a relay which interrupts the subscriber circuit (b) (via 12), activates a loudspeaker (L via I1) and connects the first telephone station (T1) to one wire (b) of the subscriber line (via 12). In this way, dialling performed by the ancillary dialling unit in the aforementioned telephone systems cannot be affected by interference caused by simultaneous dialling on a downstream telephone station. <IMAGE>
Patent DE-3135165-A1 (DE)
Title: Layered cloth/pile structure with two air-conditioning zones
Inventor: MANZUOLI GIULIANO
IPC: D06N3/00
Filed: 1981-09-04
Abstract: The invention relates to a layered pile structure, in which a first pile layer (4) consisting of fibres is arranged on one side of a knitted back (3), and in which a second pile layer (2) is applied to the other side of the knitted back (3). A cloth layer (1) is arranged on the side of the second pile layer (2) located opposite the knitted back (3). The layered pile structure is especially suitable for the production of articles of clothing, such as, for example, headgear, shoes, gloves, anoraks and heating pads, bedding, blankets, electric blankets, sleeping bags and bolsters. <IMAGE>
Patent DE-3140918-A1 (DE)
Title: Brake shoe for drum brakes
Inventor: JANOSDEAK EGON DIPL ING DR
IPC: F16D69/00
Filed: 1981-10-15
Abstract: To avoid squealing in drum brakes, the invention specifies a brake shoe with a brake lining which adapts to the friction surface of the brake drum and is fixed on a brake shoe, that cross-section of the brake lining which is parallel to the axis of rotation of the brake drum having a spring constant which changes in the cross-sectional direction, whether by virtue of varying cross-sections in the radial direction of the drum brake and/or a combination of materials with different spring constants in the cross-sectional direction parallel to the axis and/or the radial cross-sectional direction.
Patent DE-3142084-A1 (DE)
Title: Hanger for tile dressing appliances and the like on the magazine rods in self-service shops
Inventor: JOECKER EDUARD
IPC: B65D73/00
Filed: 1981-10-23
Abstract: The intention is to provide hangers for hanging products in the basic shape of a T-square, especially tile dressing appliances, on the magazine rods in self-service shops, these hangers firstly offering the advantages of storing the products on magazine rods but secondly offering the customer the opportunity to inspect the products more closely and examine them without its being necessary to destroy any parts of the sales packaging for this purpose. This object is achieved by a hanger which consists of a card (1, 2) folded in two layers and provided, in the central part of its folded edge (4), with a cut-out (5) and, above the cut-out, a hanging hole (6, 7) to be pushed onto a magazine rod. <IMAGE>
Patent DE-3142589-A1 (DE)
Title: Process for annealing layers of metal, silicon and metal/silicon on substrates in an extremely dry inert gas atmosphere
Inventor: PAWLIK DIETER DIPL ING
IPC: H01L21/28
Filed: 1981-10-27
Abstract: In a process for annealing layers (6) of metal, silicon and metal/silicon on substrate wafers (5) in an extremely dry inert gas atmosphere, the coated substrate wafers (5, 6) to be treated are first placed in a zone (a) at less than 100 DEG C in the annealing system. The annealing gas, which has an oxygen or moisture content of less than 0.5 ppm, is introduced into the system from the loading side (1, 2) and the system is purged by flushing with the annealing gas. The substrate wafers (5, 6) are then transferred to the annealing zone in the centre of the furnace (4), heated to the annealing temperature, returned to the starting zone (a) after the annealing time has elapsed via a furnace zone at 400 to 500 DEG C, and cooled to temperatures of less than 100 DEG C. The process is used in semiconductor technology for the manufacture of VLSI circuits and in thin-film technology. <IMAGE>
Patent DE-3200440-A1 (DE)
Title: Permanent funnel-shaped coffee filter
Inventor: SANNECK HUGO DR ING
IPC: A47J31/06
Filed: 1982-01-09
Abstract: Permanent funnel-shaped coffee filter (3) for an electric coffee machine, which is accommodated in a removable coffee filter housing (1). In order to reduce the suspended matter content during the infusion process, there is connected downstream of the coffee filter (3) and the outlet opening (7) a further filter (9), the screen openings (10) of which are of considerably smaller deisgn in relation to the screen openings (5) in the coffee filter (3). <IMAGE>
Patent DE-3202144-A1 (DE)
Title: Method for operating a high-pressure steam boiler and heat exchanger useable therefor
Inventor: JACOB KARL-AUGUST ING GRAD
IPC: F22D11/00
Filed: 1982-01-23
Abstract: The invention relates to a method and a heat exchanger for operating a high-pressure steam boiler, in particular for dry cleaners, laundries or the like, with consumers which are connected to a high-pressure steam boiler and the condensate of which is returned to a condensate container, from which feed water is supplied to the steam boiler by means of a feed water pump. According to the invention, the condensate is supplied to a heat exchanger before the condensate container, the feed water is pumped to the heat exchanger, guided helically in the heat exchanger and conducted back into the steam boiler from the heat exchanger. By this heating of the feed water, the heat contained in the condensate is harnessed, so that savings in the fuel-oil requirement of the steam boiler of up to in excess of 30% result. The invention relates to a heat exchanger with container (8), connections of a condensate pipe (4) which open in the cover (17), a feed water supply pipe (6), a feed water removal pipe (9) and a condensate pipe (10). Between feed water supply pipe (6) and feed water removal pipe (8), there is arranged a feed water spiral (11) which extends over the height of the container (8), the feed water supply pipe (6) extending to the lowest point of the feed water spiral (11) and the feed water removal pipe (9) starting from the highest point of the feed water spiral (11). <IMAGE>
Patent DE-3202668-A1 (DE)
Title: Circuit arrangement for telecommunication systems, particularly PCM telephone switching systems, with four-wire connecting paths which are subjected to functional tests
Inventor: JUGEL ALFRED
IPC: H04M3/24
Filed: 1982-01-28
Abstract: In order to locate faults during the functional testing of a four-wire connection-individual switching device (R, E, DEC, D, S, ENC, E) and a four-wire line (U) connected to them, signals received via this line are compared with functional test signals if they are found to have errors. These test signals are supplied by a test device (Z) to the outgoing branch (y) of the relevant connection-individual switching device (R, E, DEC, D, S, ENC, E), then supplied via a rerouting device (R) provided in it, bypassing the four-wire line (U), to the incoming branch (x) of the connection-individual switching device (R, E, DEC, D, S, ENC, E), and are then received by means of their receivers (E, DEC, D, V). If the test with functional test signals results in the reception of signals having errors in the same manner, the fault location is in the connection-individual switching device (R, E, DEC, D, S, ENC, E), if not, it is located in the four-wire line (R, E, DEC, D, S, ENC, E) or the device (W) connected to its other end. <IMAGE>
Patent DE-3204369-A1 (DE)
Title: Process for producing high-octane gasoline
Inventor: BROWN STANLEY M
IPC: B01J29/08
Filed: 1982-02-09
Abstract: The invention comprises an improvement with respect to the operation of a fluidised catalytic cracking plant in such a way that the octane number of the gasoline fraction taken from the cracking plant during recurrent cycles of the cracking of charge material and regeneration is held at a high value by using fresh zeolitic catalyst particles which, relative to the zeolite content, have an alkali metal oxide content of less than about 1.5%, that the quantity of the alkali metal oxide which comes into contact with the catalyst inventory during the entire cracking process, stripping and regeneration is controlled such that the alkali metal oxide content of the equilibrium catalyst is held below 2.0%, relative to the weight of the zeolite in the fresh zeolitic catalyst.
Patent DE-3206217-A1 (DE)
Title: Adjustable bearing
Inventor: ALBERT WILLIBALD
IPC: F16C23/08
Filed: 1982-02-20
Abstract: The angularly adjustable bearing with large radial play and small axial play or vice versa, comprising a three-ring pivoting bearing with cardanic suspension comprises two-part rotatable connecting pins, one part of which has a nose which projects into a corresponding recess in the other part, in each case two opposite pairs of surfaces between the nose and the recess having a different play, as a result of which only very small movements are possible in one direction while, in the other direction, they remain large despite large play values in the three-ring pivoting bearing. The outer radial force is passed uniquely via the pivoting bearing while the outer axial force is passed uniquely via the two-part cardan pin. Axial wedging in the pivoting bearing, which would prevent the angular adjustability, is thereby avoided. <IMAGE>
Patent DE-3207276-A1 (DE)
Title: Turbine blade material having high resistance to corrosion fatigue, process for producing it and its use
Inventor: ATRENS ANDREJS DR
IPC: C22C33/02
Filed: 1982-03-01
Abstract: A turbine blade material having high yield point and notch impact strength accompanied simultaneously by high resistance to corrosion fatigue is composed of a stainless steel which has a mixed ferritic-austenitic structure and which contains, in addition to a relatively high chromium content, molybdenum, nickel and/or manganese, and also other oxidic additives suitable for dispersion hardening. It is produced by powder metallurgy involving compacting the encapsulated powder mixture by forging, extrusion or hot isostatic pressing, further processing it thermomechanically and quenching it in water. It is used in the low-pressure section of steam turbines and in turbocompressors of gas turbine installations.
Patent DE-3220215-A1 (DE)
Inventor: SCHMOHL MICHAEL WOLFGANG DIPL
IPC: A43B13/14
Filed: 1982-05-28
Abstract: An outsole for a sports shoe, which outsole is preferably of polyurethane or a similar plastics material. The outsole has a shell-shaped inner sole layer (19), which is provided with a profiled bedding and is made from a less dense material, and a flat outer sole layer (18) which is associated substantially only with the bearing surface and is made from material which is denser than the inner layer (19). In the region of the centre of the foot, the outer layer (18) has a trapezoidal recess (20) which is enclosed on all sides by the denser material and through which the less dense material of the inner sole (19) projects to the bearing surface.
Patent DE-3221660-A1 (DE)
Title: Process for the purpose of optimum combustion in furnaces
Inventor: GILLI PAUL G DIPL ING DR TECHN
IPC: F23N1/02
Filed: 1982-06-08
Abstract: In a process to achieve optimum combustion with minimum firing loss in furnaces (smallest possible excess of air for complete combustion), the flue gas temperature is continuously measured, preferably just after the combustion chamber, and a mass flow ratio, preferably the ratio of fuel mass flow to combustion air mass flow, or the ratio of primary and secondary air mass flows, is then adjusted such that the measured flue gas temperature assumes a maximum value, whereupon operation results at, or in the neighbourhood of, the optimum. This optimisation of the combustion is achieved without chemical flue gas analysis by a simple and low-maintenance temperature measurement, which moreover must only agree in its trend. Such a process can be used economically even in relatively small heating boilers.
Patent DE-3229846-A1 (DE)
Inventor: ERNST ALFONS DIPL ING
IPC: G01B11/02
Filed: 1982-08-11
Abstract: In a measuring apparatus of the type having a measuring graduation which is scanned by a scanning unit that includes a scanning plate, the scanning plate is provided with at least two phase shifted scanning fields which are phase shifted with respect to one another in order to generate two analog scanning signals which are likewise phase shifted with respect to one another. In order to allow setting of the desired phase difference between the scanning signals, at least one of the scanning fields is made up of two partial scanning fields which are offset with respect to one another and are partially coverable by means of screws or diaphragms. The corresponding analog signal is made up of two partial analog signals obtained by use of the two partial scanning fields.
Patent DE-3230116-A1 (DE)
Title: Connection means for driving or driven hollow shafts of fibre composite material
Inventor: ARENDTS F J PROF
IPC: F16H57/00
Filed: 1982-08-13
Abstract: The invention relates to a connection means for driving or driven hollow shafts of fibre composite material, especially of synthetic resin reinforced with carbon fibres. It comprises a tubular hollow shaft with a positively connected journal and coupling means for applying or dissipating the torque. The hollow shaft has a constant polygonal profile along its complete length. The journal can be inserted so as to fit into the hollow shaft and can be bonded in. The layer structure of the fibres in the hollow shaft can consist of wound layers inclined at approximately +/- 45 DEG  and be constant in the axial direction. The ends in the region of the journals can be reinforced with other wound layers, which are applied with pre-tension. A process for manufacturing hollow shafts is disclosed, according to which a separating layer of low melting material is built up on a cylindrical core, which separating layer is removed by melting after application of the wound layers and curing of the hollow shafts. The separating layer can be applied by immersing the core in a molten material and removing the core through a profile template. When using a core without separating layer, this core can be removed by intense cooling on account of the different coefficients of thermal expansion.
Patent DE-3233407-A1 (DE)
Title: Heat exchanger for heat recovery from sludges or like liquids, in particular for heat transfer from septic sludge to untreated sludge
Inventor: GRABBE FRIEDBUT ING GRAD
IPC: F28F1/02
Filed: 1982-09-09
Abstract: A heat exchanger for heat recovery from heated septic sludge, in particular for heat transfer from septic sludge to untreated sludge, taking into consideration a particularly simple and compact construction from the economic and engineering viewpoint, is equipped with at least one tube through which the sludge flows. The tube is subdivided into at least four chambers, the internal chamber walls forming heat exchange surfaces. The different media, untreated sludge/septic sludge, each flow through two neighbouring chambers in countercurrent. Owing to the relatively large heat transfer surfaces, even a reducing flow velocity or flow turbulence does not interfere, but rather, even at low temperature differences, problem-free heat recovery is achieved without danger of blockage. <IMAGE>
Patent DE-3235593-A1 (DE)
Title: Detonating circuit for explosive devices and the like
Inventor: BUHRLEN HAROLD
IPC: F41A19/64
Filed: 1982-09-25
Abstract: The detonating circuit for an explosive or an explosive device for driving a projectile in a firearm or the like operates by means of an electrical detonating spark between electrodes which are spaced apart, in order to detonate the explosive or the explosive device. The detonating circuit is equipped with a battery, control switch, transistor and step-up transformer, and has an oscillator circuit with a multivibrator for connecting the transistor in order to supply battery pulses to the primary winding of the transformer and to produce high-voltage pulses on the secondary winding of the transformer, which high-voltage pulses are applied to the electrodes. The operating cycle and frequency of the oscillator circuit are adjustable in order to obtain an optimum output with a minimum load on the battery.
Patent DE-3238741-A1 (DE)
Inventor: WILLMUND WOLF-DIETER DR
IPC: C14C9/02
Filed: 1982-10-20
Abstract: This invention relates to a process for preparing sulfonated lubricating agents for leather and tanned furs consisting of the steps of: (a) chlorinating natural or synthetic higher fatty acids or esters of higher fatty acids having chain lengths of from 8 to 24 carbon atoms containing olefinically unsaturated fractions, up to saturation of the double bonds; (b) sulfochlorinating the chlorinated product from step (a) with chlorine and SO2 at a temperature of from about 20 DEG  to 90 DEG  C., optionally under UV-radiation, for a time sufficient to obtain a compound having a chlorine content of from about 5 to 30 percent by weight and a content of SO2Cl groups of from about 1 to 20 percent by weight, the ratio of chlorine atoms to SO2Cl groups being from about 0.7:1 to 70:1; and (c) saponifying the product from step (b) to form a water-emulsifiable alkali metal, ammonium, or lower alkyl-ammonium salt of the product of step (b).
Patent DE-3245735-A1 (DE)
Inventor: FRISCH GERHARD DR
IPC: A01C21/00
Filed: 1982-12-10
Abstract: 1. Fertilizing agents for spraying as an aerosol or spray consisting of an aqueous phase containing the plant nutrient agents, an organic phase containing nonphytotoxic organic solvents and a propellant, characterized in that they contain one or more (C2 -C12 )alkanepolyols and one or more surface active substances and swelling aluminium-silicates.
Patent DE-3246168-A1 (DE)
Title: Grinding machine
Inventor: BLEICH RALF DIPL ING
IPC: B24B45/00
Filed: 1982-12-14
Abstract: The grinding machine consists of a table (10) displaceable linearly in the X-direction, a column (2), a grinding spindle (3) displaceable linearly in the Y-direction and having at least one grinding wheel (6), a work carrier (14) displaceable linearly in the Z-direction, and a grinding-wheel magazine (9) for keeping in readiness several grinding wheels (6a, 6b). For every grinding wheel to be kept in readiness, the grinding-wheel magazine (9) contains a grinding-wheel holder (11a, b, c) with means for seizing and holding a grinding-wheel flange. The grinding-wheel magazine and the grinding spindle can be moved relative to one another from a working position into a transfer position and back again while utilising the machine axes X, Y, Z. The grinding wheels are changed by transferring directly from the grinding spindle to a grinding-wheel holder of the magazine and vice versa. <IMAGE>
Patent DE-3249390-A1 (DE)
Title: Shutter flap for apertures in vertical vehicle walls
Inventor: EGER GEORG
IPC: E05D15/20
Filed: 1982-12-07
Abstract: A shutter flap for apertures in vertical outer walls of vehicles, especially commercial vehicles, is equipped with running rails which are movable along vertically extending guide rails. These guide rails are mounted pivotably on the vertical wall. To open the flap, first the guide rails are pivoted out of the vertical wall; thereupon, the shutter flap is displaced by means of its running rails along the guide rails. The guide rails are thus countersunk in the closed position of the flap. Furthermore, no space is required in the horizontal direction. The movement of the running rails along the guide rails preferably takes place by means of guide rollers, and between the running and guide rails there can also be a movable slide which is equipped on both sides with guide rollers.
Patent DE-3300387-A1 (DE)
Title: Lorry or lorry trailer or semitrailer trough body, in particular trough tipping body with cover
Inventor: WEGNER ALFONS
IPC: B60J5/06
Filed: 1983-01-07
Abstract: In a lorry or lorry trailer or semitrailer trough body, in particular a trough tipping body whose upper edge which is preferably reinforced with an upper frame surrounds an opening which can be closed with a cover, it is provided according to the invention for the cover to be constructed as a foldable cover with a rigid roof, the edge of the eaves of which is guided with rockers about a parallel bar of the eaves arranged under the edge and the edge lying opposite the eaves is driven with thrust cranks, the ends of whose connecting joints reach under the edge.
Patent DE-3300972-A1 (DE)
Title: Apparatus for the removal of solid particles from gas
Inventor: DE FEO ANGELO
IPC: B01D46/34
Filed: 1983-01-13
Abstract: A separation arrangement (10) suitable for high temperatures for the separation of fine solid particles from gas comprises an outer, temperature-resistant jacketed vessel (12) and an inner vessel (14). An untreated gas inlet (34), a clean gas outlet (36) and two gravel feed pipes (22) are provided at the top and a common solids outlet (61) is provided at the bottom of the apparatus. Three longitudinal guide slot arrangements (58, 60, 62) in the inner vessel offer intermediate spaces (64, 66) for the gravel. A gas inlet chamber (108) closed by a base (98) is formed at one side of the inner vessel, while a gas outlet chamber (19) open at the bottom is produced at the opposite side. The gravel feed pipes and the gas outlet pipe are furnished with sealing couplings (54, 65, 150, 152) to permit thermal movement. The guide slot arrangements are also mounted to be able to slide on rails. On flowing through the gravel packings, solid particles contained in the untreated gas are removed from the gas. The gravel packings are discharged from time to time and replaced by new packings. <IMAGE>