baber/WOPTO huggingface dataset:
Patent DE-3741364-A1 (DE)
Title: Pneumatic booster
Inventor: REGEL MATHIAS
IPC: G05D16/16
Filed: 1987-12-07
Abstract: In a pneumatic booster, the chamber counteracting the inlet control pressure (pk) is subdivided into two chambers (24, 26) by a partition wall (16). A double cone (32) is guided with its shank (34) in a sealed-off manner in the partition wall (16). The lower chamber (26) is connected to the outlet via a channel (54), and a bore (52) connects this channel (54) to the chamber (24) located above. When the incoming air (Z) is allowed through to the outlet (Y), a negative pressure occurs in the chamber (24) via the bore (52), so that, in the event of an abrupt rise in the inlet control pressure, the booster does not tend to overshoot (Fig. 1). <IMAGE>
Patent DE-3742796-A1 (DE)
Title: Amplifier with a transistor stage with current feedback
Inventor: POPPINGA BONNO DIPL ING
IPC: H03G3/20
Filed: 1987-12-17
Abstract: The invention relates to an amplifier with a transistor stage with current feedback, the gain of which is adjustable and the current feedback resistor of which consists of an ohmic resistor connected in parallel with a controllable resistor, the resistance value of which can be varied by applying voltages. To provide for a gain setting in steps and, at the same time, regulation, the adjustable resistor can be set step by step to various resistance values by applying switchable direct voltages and a rectified regulating voltage derived from the output signal of the amplifier can be optionally superimposed on the applied preset voltage.
Patent DE-3743556-A1 (DE)
Inventor: BLOMBERG LOTHAR
IPC: H03K17/30
Filed: 1987-12-22
Abstract: Known circuit arrangements for switching a power triac operate with a comparatively large residual phase angle, which correspondingly increases the complexity in mains and radio frequency interference suppression. A novel circuit arrangement exhibits a drive circuit (1) for a power triac (V2) which essentially consists of a rectifier bridge circuit (D1, D2, D3, D4) with a switching path of a controllable semi-conductor switch (V1) arranged in its shunt branch. A trigger diode (D5) is connected in series with the switching path. The novel circuit arrangement is provided, in particular, for use in lighting engineering. <IMAGE>
Patent DE-3805665-A1 (DE)
Title: Gear-cutting machine with CNC control for producing bevel gears
Inventor: ENGEMANN KARL-HEINZ DIPL ING
IPC: B23F23/00
Filed: 1988-02-24
Abstract: The invention relates to a gear-cutting machine for producing bevel gears by the generating and form-cutting process, in which the work carrier is pivotably arranged about a perpendicular axis, and the work carrier and tool carrier are arranged so as to be displaceable perpendicularly and horizontally relative to one another. The aim of the invention is to decisively reduce the expenditure for the gear-cutting machine and its drive and control technology and to increase its degree of automation. The essence of the invention consists in the fact that the tool column and the work column are displaceable relative to one another in three coordinates arranged at right angles to one another, and the work column is pivotably arranged about a vertical axis.
Patent DE-3806260-A1 (DE)
Inventor: MEO ANTONIO
IPC: B61G5/02
Filed: 1988-02-27
Abstract: The invention relates to a dynamic joint 7 which is to be mounted on a conventional railway bogie (1) and permits wagons or semi-trailers (28), particularly shaped, to be coupled so as to form a train. The dynamic joint 7 comprises a box shaped member 6 which is articulated on the railway bogie about the vertical pivot 24 of the latter. A longitudinal sliding arm 14 acting against an elastic cushioning unit 16 is guided by a retaining member 11, pivotally mounted about a vertical pivot 10 in the box 6. Extensions or forks 20 of the arm are connected to the fore structure of a semi-trailer by a pair of retractible pivots 22, extending transversely. The rear structure of the following semi-trailer is connected to a pair of pivots 24 with horizontal transverse axes which are arranged on the side of the box 6. The joint can execute vertical or horizontal angular displacements, and each semi-trailer is provided with such a frame that it is possible to employ the semi-trailer itself either as a railway vehicle or a road vehicle. To this end, the semi-trailer is provided with fore and rear seats in which the coupling parts of the joint (7) are housed. <IMAGE>
Patent DE-3813378-A1 (DE)
Title: Belt connection which can be looped in on components
Inventor: DOLEZYCH UDO
IPC: F16G11/12
Filed: 1988-04-21
Abstract: The invention provides a method for producing a belt connection which can be looped in on components, such as belt ratchets, prestress indicating devices for lashing belts, attachment end hooks and the like, characterised in that the reeling block (1) has at least one catch element (4) which is designed so that it can be engaged in the belt introduction slot (2) of the belt winding shaft (3) and is mounted pivotably at a distance (A) from the axis of rotation (x-x) of the belt winding shaft (3). <IMAGE>
Patent DE-3815052-A1 (DE)
Title: Apparatus for applying an aligned plaster layer onto a wall surface
Inventor: HESSLER HANS
IPC: E04F21/02
Filed: 1988-05-04
Abstract: The apparatus is an elongate housing which exhibits an inlet opening for mortar, an outlet opening, running in the axial direction, for the mortar and a drawing-up strip in the region of the outlet opening. Arranged coaxially in a receiving trough for the mortar is a slinging roll which is provided with leaf springs over its entire length. In front of the outlet opening, a protrusion which is fixed to the housing projects into the movement path of the leaf springs, as a result of which, upon their rotation, the latter are first of all braced and then released. The slinging roll is rotated at a high speed, its leaf springs carrying along mortar which, after passing the protrusion, they sling onto the wall surface which is to be plastered. The housing is guided vertically upwards in a continuous manner via a roller gear, the drawing-up strip fitted on the housing stripping off excess mortar which falls back into the housing.
Patent DE-3817809-A1 (DE)
Title: Device for vibration monitoring of wheel systems, especially of motor vehicles, during driving operation
Inventor: LEHN F HEINRICH DR ING
IPC: G01M1/28
Filed: 1988-05-26
Abstract: In the device, at least one acceleration sensor is arranged as vibration pick-up in the region of the bearing and/or suspension of each vehicle wheel, and an evaluation circuit separately processing the signals of the individual vibration pick-ups is provided. The evaluation circuit has a display device connected downstream, which has a display for each wheel system and a fault display for each monitored function, such as balance condition, shock-absorber, tyre air pressure and tyre geometry.
Patent DE-3819305-A1 (DE)
Inventor: OTT WILFRIED
IPC: C02F1/20
Filed: 1988-06-03
Abstract: In aeration devices for introducing gas into a liquid, there is the problem of the introduction body filled with gas being subjected to buoyancy. To eliminate this buoyancy, the introduction body is formed to be open at its free end and to be closed at its other end where it carries a fixing branch by means of which it can be connected to a gas supply distributor. The introduction body is surrounded by a perforated tubular membrane and a gas feed channel ends in the region of the membrane. 
<??>To facilitate manufacture and assembly and to reduce the consumption of material, the introduction body is designed such that its gas feed channel passes through the fixing branch as a bore which is axially blind and that at least one radial outlet is present in the region of the membrane. Preferably, a longitudinal groove which allows uniform distribution of the gas extends from the outlet of the gas feed channel to a point in front of the free end of the introduction body. 
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Patent DE-3820445-A1 (DE)
Title: Device for keeping awake motorists, pilots and watchmen
Inventor: KLINGLER ERNST
IPC: B60K28/06
Filed: 1988-06-15
Abstract: Device for keeping persons awake by pressing with the thumb in a socket on a thumb-pressure bar and consequently on a rubber or a compression spring which, when pressure on a steel band with the index finger of the right or left hand becomes too weak because the person is falling asleep, endeavour to press the thumb against a tip of a screw which causes pain so as to keep the person awake and prevent him from falling asleep. For this purpose, a pointed screw and, on the latter, a pointed nut are, in practice, adjustable and the thumb-pressure bar, because it is guided slidably on four sides, cannot tip over, jam or catch. The constant gentle pressure of the steel band protects the thumb against stress.
Patent DE-3820890-A1 (DE)
Title: Shaped weld piece for avoiding terrace fractures with welded constructions consisting of structural steel
Inventor: GASSNER HELMUT DIPL ING
IPC: F16L3/12
Filed: 1988-06-21
Abstract: A shaped piece is machined from a thick-walled steel section such that it can be welded into an existing construction. In the groove made in it, a pipe clamp may then be braced and welded onto a cut T-piece or similar profile. Consequently, a terrace fracture in the necessary steel construction can be avoided since the shrinkage stresses in the thickness direction are avoided.
Patent DE-3827846-A1 (DE)
Title: Process for the preparation of cyclopropylamines
Inventor: MUELLER UTE DR
IPC: C07C45/67
Filed: 1988-08-17
Abstract: Cyclopropylamines can be obtained by Beckmann rearrangement of the anti-isomers of cyclopropyl ketoximes, relative to the cyclopropyl ring, with the aid of organic sulphochlorides and subsequent hydrolysis of the initially obtained cyclopropyl acylamides. In this process the ketoximes are introduced in the form enriched beyond the thermodynamic equilibrium setting in favour of the said anti-isomer simultaneously with the organic sulphochlorides into a solution or suspension of an alkaline-reacting substance warmed to elevated temperature. The form of the ketoximes enriched in favour of the anti-isomer is obtained in a preferred manner by distillation of the thermodynamic equilibrium mixture of the syn- and the anti-isomers.
Patent DE-3828329-A1 (DE)
Title: Through-flow mixer having a novel neck bearing
Inventor: KAISER HERMANN
IPC: B28C5/12
Filed: 1988-08-20
Abstract: In the through-flow mixer according to the invention having a novel neck bearing, the axle furnished in the dry zone with a metering screw is guided on the driving side by the drive motor and on the power take-off side by the novel neck bearing. A protective tube provided with stirrer tools which is welded to the axle on the power take-off side and on the driving side engages in a lip seal permits no material to be mixed to penetrate into the neck bearing. The mixer tool axle of the wet zone is held and driven via a simple push-in connection by the mounted axle of the dry zone.
Patent DE-3834188-A1 (DE)
Inventor: SPILLE JENS
IPC: H03H17/06
Filed: 1988-10-07
Abstract: In a sub-band coder having several filter stages, the  problem exists to keep disturbances, which are produced by data reduction or quantization noise in one sub-band, out of other sub-bands in which these disturbances do not originally occur. Such disturbances occur when the noise components are reflected. According to the invention, the filter stages are dimensioned in such a manner that their transition areas do not overlap at any point in the frequency band. The stop-band corner frequencies of the individual filter stages are preferably identical. The filters can be used in sub-band coders, preferably for data reduction in digital broadcast transmission.
Patent DE-3838155-A1 (DE)
Title: Spirit-level
Inventor: SENDKE AXEL
IPC: G01C9/26
Filed: 1988-11-10
Abstract: The invention relates to a spirit-level having a level for the determination of the horizontal position of constructional parts, engagement bands (10 and 11) being arranged in a horizontal plane on both sides of the level (1) and, clamped between two constructional parts to be aligned, enabling a determination of the horizontal position of these constructional parts (in conjunction with Fig. 1). <IMAGE>
Patent DE-3839050-A1 (DE)
Title: Roller-blind securing means (roller-blind securing lock)
Inventor: SCHABLAS FRANZ
IPC: E06B9/86
Filed: 1988-11-18
Abstract: Published without abstract.
Patent DE-3839095-A1 (DE)
Inventor: EHLE JOACHIM DIPL ING
IPC: F27D3/00
Filed: 1988-11-18
Abstract: In a melting unit composed of an arc furnace (1) and at least one charging material preheater which is in the form of a shaft and is arranged on the side of the furnace (3) container (3) of the arc furnace (1), whose interior (9) is connected in a region adjoining its base (13) by a connecting zone (7) to the interior of the furnace container, furthermore burners (15) open into the lower region of the charging material preheater, when used for a liquid phase process, after the running off a part of the amount of charging material required for the next melt is directly charged into the furnace container in order to shorten the melting time. This part is preheated in a preheating chamber (20) which is downstream of the charging material preheater (2). 
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Patent DE-3840021-A1 (DE)
Title: Device for the continuous measurement of a gas concentration
Inventor: WENKER DIETER DR
IPC: G01N27/12
Filed: 1988-11-26
Abstract: For the purpose of monitoring the hydrogen concentration in the oven chamber of a gas chromatograph, measuring devices are known in which a sample gas stream is continuously drawn from the oven chamber and is tested by means of a semiconductor sensor. For the purpose of improving the measurement accuracy, but also to enhance the flexibility of the operation in practice, according to the invention a device for measuring and monitoring the concentration of a gaseous component, especially hydrogen, is proposed in which the detector is an electrochemical sensor, for which likewise continuous drawing off of a sample gas stream takes place and for which various output signals, which signal fault states, are available to the user for display purposes, but also to initiate external control processes. In addition, the presence of certain error states can again be employed, by means of simple switching measures on the part of the user, to trigger specific control or display functions. <IMAGE>
Patent DE-3900478-A1 (DE)
Title: Heat flow meter
Inventor: BUSCH DIETRICH
IPC: G01K17/00
Filed: 1989-01-10
Abstract: A description is given of a heat flow meter which consists of an inner and an outer housing. The inner housing carries two heat sensors in a differential circuit, one of which is exposed to the radiation to be measured and the other is in thermal contact with the inner housing. The inner housing is connected to a cooling circuit which is controlled by a further thermostatic element connected in a thermally conductive fashion to the inner housing. The inner housing is arranged in the region of the rear wall of the outer housing. The walls of the outer housing are likewise connected to a cooling circuit. By means of the novel arrangement of the reference sensor and the control of the cooling circuit for the inner housing by means of a thermostatic element, as well as by means of the additional cooling of the outer housing, an especially great measuring accuracy is achieved.
Patent DE-3900896-A1 (DE)
Title: Oral care composition
Inventor: HUMPHRIES MARTYN
IPC: A61K8/34
Filed: 1989-01-13
Abstract: An oral care composition contains active amounts of a cationic antibacterial agent and of a polymer which carries attached polyalkylene oxide side chains and, preferably, carboxyl groups. Oral care compositions of this type reduce both biological contamination of teeth and the discoloration thereof, which may derive from the interaction of the cationic antibacterial agent with constituents of food.
Patent DE-3906592-A1 (DE)
Title: Motor-vehicle antenna, preferably for VHF broadcast-radio reception
Inventor: BERFELDE REINHARD
IPC: H01Q1/12
Filed: 1989-03-02
Abstract: In the case of rear-window antennas which consist of a plurality of dominantly horizontal conductor tracks which are arranged parallel to one another, are connected to one another and are used for reception - and in the use of rear-window heating panels which are constructed on the same principle, as antennas - the limits for increasing the received power have been reached in the case of solutions conforming with the prior art. If a heating panel is used as an antenna, additional circuitry complexity (outlay) is necessary in order to decouple the RF signals from the heater direct current and from the vehicle's electrical power system. Using the additional conductor tracks 5, according to the invention, which are arranged at right angles to the heating and antenna conductors 3, the reception level is reliably increased by 3 to 6 dB and, if the RF signals are extracted via a separate pick-off 6 - no longer connected to the heating circuit - it is possible to dispense with the RF filters etc. which are otherwise necessary when using a rear-window heating panel as an antenna.
Patent DE-3907291-A1 (DE)
Title: Packaging bag with gusset and handle
Inventor: SCHWINN GEORG
IPC: B65D33/06
Filed: 1989-03-07
Abstract: A packaging bag of essentially rectangular shape, consisting of two flat film parts located one above the other and connected at the side edges and of a gusset (2) between the upper terminating edges of the flat parts, which gusset has a fold line between the terminating edges. The ends of the two flat film parts located opposite the gusset are not connected prior to the packaging bag being filled. The gusset (2) and a handle (3) are produced from a single film section placed in a W-shape (handle-gusset element 16). A seam (13) runs along the fold lines (10, 10') of the gusset (2). <IMAGE>
Patent DE-3911486-A1 (DE)
Inventor: OTTKA MANFRED DIPL ING
IPC: H04L25/06
Filed: 1989-04-08
Abstract: 2.1 Methods for offset voltage control of discriminators are known. The offset voltage is controlled by means of a superimposition device which is provided for superimposing a control signal onto an input signal. A discriminator is provided for discriminating the output signal of the superimposition device and for generating a regenerated output digital signal and a fault signal. A control generator generates the control signal as a function of the digital fault signal. 2.2 The invention discloses a non-complex circuit arrangement for compensating an offset voltage, in which a compensation signal (KS) is subtracted from the input signal (ES) in a superimposition device (1), the resulting signal being digitised in a discriminator (2) with n bits and the digital signal (DS) being used to form the compensation signal (KS), in such a way that a suitable linear combination of m bits of the n bits (m < n) available is carried out in a logic switching element (6) and the result of this linear combination is fed to the superimposition device (1) via a suitable filter (4). 2.3 Application of the offset voltage control is in single-dimensional or multi-dimensional multilevel signals, in particular 64 QAM signals. <IMAGE>
Patent DE-3912594-A1 (DE)
Title: Operating spinning machine producing cops - by executing upward movement of ring rail at stepped speed
Inventor: REYER HERBERT DIPL ING
IPC: D01H1/36
Filed: 1989-04-17
Abstract: An operating process is for a spinning machine, which produces cops. A ring rail is driven to achieve movements up and down and a stepped lift movement. The upward movement is executed at a stepped speed. The speed is raised after a lower reversal point and before a top reversal point. During a double stroke involving an upward and a downward movement, the machine speed is controlled in such a way that, at least during the upward movement, the speed is reduced. ADVANTAGE - The cop structure is improved and the number of yarn breakages is reduced.
Patent DE-3915595-A1 (DE)
IPC: B60B23/10
Filed: 1989-05-12
Abstract: A multi-part vehicle wheel with a metal rim (2) and an inner part (20), where the rim (2) and the inner part (20) are bolted together, in which a one-part steel rim (2) has a flange (8) on its inner side projecting radially inwards, to which the inner part (20) is bolted. This prevents any sealing problems when using tubeless tyres.
Patent DE-3915622-A1 (DE)
Title: Double protective layer against stones, for metal substrates - has protective layer based on urethane¨-acrylate¨ resin, acrylic monomers and hardener, and aq. filler layer applied wet-in-wet
Inventor: HENSCHEL RALPH DR
IPC: B05D7/16
Filed: 1989-05-12
Abstract: Coating metal substrates comprises applying a primer layer (1) by electrophoretic painting, followed by a protective layer against stone impact (2) and a filler layer (3) and then the usual paint layer(s). The novelty is that the compsn. for (2) contains (a) a prepolymer or mixt. thereof based on a urethane-acrylate (I), (b) reactive (meth)acrylate monomer(s) (c) a hardener system and (d) organic solvent and, opt. pigments and normal additives, and an aq. filler compsn. (3) is applied onto (2). Pref. (b) is triethylene glycol tri(meth)acrylate, tetraethylene glycol di(meth)acrylate, tetrabutylene glycol di(meth)acrylate, tetrapropylene glycol di(meth)acrylate, lauryl (meth)acrylate or a mixt. thereof compsn. (2) also contains microfine polymer particles as addtive. USE/ADVANTAGE - The process provides a double protective layer against stone, impact esp. for motor body parts, compsn. (2) is specifically adapted to thee compatible with aq. compsn. (3) for application by the wet-in-wet process. (10pp Dwg.No.0/0)
Patent DE-3919957-A1 (DE)
Title: Automatic feeding device for pigs - has swivel fodder clearing lever to direct fodder to feeding place
Inventor: ULRICH FRIEDRICH
IPC: A01K5/02
Filed: 1989-06-19
Abstract: The automatic fodder supply for pigs comprises a tubular container having at the bottom an ellipsical recess (5) through which the pig pushes her head towards the inner feeding area which is set below the actual fodder supply container from which the fodder can run down via two downwardly inclined stepped plates. The stepped plate (9) opposite the recess (5) is mounted with its free end inclined down towards the feeding trough (3) of the feeding area (7). The fodder cleaning lever (20) is mounted on this stepped plate (9) and is provided with at least one tine (21) which spreads over the other stepped plate (8). USE/ADVANTAGE - A reliable supply of pig feed is ensured even when using feed which is likely to clog together.
Patent DE-3925403-A1 (DE)
Title: Dry gas seal for machine shafts - has positive radially resilient connection between shaft bush and shaft
Inventor: LORENZEN HEINRICH DIPL ING
IPC: F16J15/46
Filed: 1989-08-01
Abstract: The dry gas seal is formed as an axial slide ring seal for a rotating shaft (1) which is guided through a housing wall (12). The shaft bush (3) which rotates with the shaft and acts as a support for a sealing face (6) surrounds the shaft (1) with radial play (4) and is connected to the shaft (1) by a positive centring connection (15,16) which when the shaft extends relative to the bush is elastically resilient but which prevents an extension of the bush in the area of the seal face (6) relative to the shaft (1). The connection between the shaft and bush has a cylinder ring shaped web (15) on one part (1) which engages in a cylinder ring shaped groove (16) on the other part wherein at least part of the connection (17) is resilient in the radial direction. USE/ADVANTAGE - Accurate sealing of the shaft is ensured at all temps. and with all temp. fluctuations.