baber/WOPTO huggingface dataset:
Patent DE-3939545-A1 (DE)
Title: Reactor for methanol synthesis - has spherical catalyst bed and definite flow pattern, and expulsion device with quenching gas distributor at centre
Inventor: BAEHNISCH HANS-JOACHIM
IPC: B01J8/02
Filed: 1989-11-30
Abstract: This reactor for methanol synthesis has a spherical casing containing a spherical catalyst bed. To form a definite flow of the synthesis gas, there is an expulsion device (7) at the centre of the catalyst bed (15) and the synthesis gas inlet (2) is at the top of the reactor and the outlet (10) is at the bottom. Variants claimed include the expulsion device being spherical and having a number of radially-disposed horizontal quenching-gas distributor pipes (6), and other contructional features. USE/ADVANTAGE - The reactor, for methanol synthesis, is of simple and economical construction and provides a definite flow pattern of synthesis gas, so ensuring an optimal reaction that can be predicted and regulated.
Patent DE-3940366-A1 (DE)
Title: Rotary oscillation damper for vehicle drive shafts - has hub ring rotating rings and space between for metal strips
Inventor: HOEHL JOHANNES
IPC: F16F15/14
Filed: 1989-12-06
Abstract: The rotary oscillation damper, for vehicle drive shafts, has a hub-ring (1) fixed to the drive-shaft, and enclosed concentrically with space between by a rotating ring (2). Sprung inserts between the hub and rotating rings contain memory-metal strips (4) embedded in them. Under the effect of temperature, the metal strips reversibly change their shape. USE/ADVANTAGE - With rises in temperature, the rotary oscillation damper does not change its properties such as torsional and radial frequency.
Patent DE-3940886-A1 (DE)
Title: Rugged design of sliding contact sensor - is potentiometer winding whose sliding contact generates positional signal and has sealed impact-resistant construction for use underground
Inventor: THOMAS GUENTHER DIPL ING
IPC: G01B7/02
Filed: 1989-12-11
Abstract: Sliding contact sensor for determining the position of machine components or machines themselves is a potentiometer coil with a contact which slides along it and which produces a signal proportional to its position. It is inside a cylinder/piston unit and has a magnetic member for making the sliding contact. The construction includes a sealed tube filled pref. with a silicone oil. ADVANTAGE - The prod. is partic. suitable for use underground. It is accordingly proof against impacts or vibrations. It has a long service life an high reliability. It is nevertheless adjustable without needing to be dismantled. It resists high temps. Its windings are not liable to corrode.
Patent DE-3943014-A1 (DE)
Title: Tyre with good steer on ice and snow - has tread with main circumferential grooves oxidised by transverse grooves so main edges of tread blocks provide zigzag effect
Inventor: HIMURO YASUO
IPC: B60C11/11
Filed: 1989-12-27
Abstract: Tread of a tyre has three or more rows of blocks divided by circumferential and transverse-grooves, some between the circumferential grooves and some running from the outermost main circumferential grooves towards the tyre edges, in addn.  each block has strips. There are at least three pointed projections on edge(s) of each block, and these projections are set at intervals round the circumference. ADVANTAGE - Tyres provide good grip in ice and snow conditions without using spikes and they maintain good steer at the same time.
Patent DE-4000387-A1 (DE)
Title: Regeneration of isopropanol used for drying electronic parts - by mixing with water absorbing binder and gravitational sepn.
Inventor: WENDT MAX DR
IPC: C07C29/76
Filed: 1990-01-09
Abstract: IN drying (gps. of ) electronic devices by treatment with water-adsorbing i-PrOH and recovering an i-PrOH regenerate (II) suitable for re-use in drying from the i-PrOH/water mixt. (I), the novel featuresa are that: (a) (I) is mixed well with a water-adsorbing binder (III); (b) the resultant mixt. is subjected to a long enough sepn. time under gravitational stationary or rotary flow conditions; and (c) after sepn., an upper or radially inner, lighter layer (IV) enriched in i-PrOH is discharged as (II) for re-use. (III) is mixed with (I) until it has dissolved completely or added as satd. salt soln. Sepn. is carried out at room temp. or at over 20 deg.C, pref. ca. 60 deg.C, and takes a few min. (IV) is removed by suction. (IV) is subjected to simple distn., pref. in an evaporating still, before use as (II).  The lower or radially outer, heavier layer contg. water and (III) is also re-used and pref. is discharged before (IV). USE/ADVANTAGE - Simple distn. of (IV) gives i-PrOH with a purity of over 85 wt.%, pref. 90-92% (claimed).  If (IV) is also treated with aq. alkali soln., the purity is up to 97%.  The process is simple and economical and ensures max. recovery of i-PrOH of very high purity. It eliminates the need for fractional distn., which gives an azeotrope contg. 87.8% i-PrOH and 12.2% water.
Patent DE-4003148-A1 (DE)
Title: Re-profiling wheels of railway rolling stock - by machining from outer edge of rim inwards to wheel flange
Inventor: BRINKMANN DIRK DIPL ING
IPC: B23B5/28
Filed: 1990-02-03
Abstract: The machine is used for reprofiling the rims of the wheels of railway rolling stock. It has a mechanism to support an axle with a wheel at each end in bearings.s-The axle and wheel assembly is then rotated about the axle by friction rollers which are pressed against the wheel rims. The rim is then reprofiled by a turning tool which is moved parallel to the axle axis so that the machining operation progresses from the outer face (14) of the wheel, inwards to the wheel flange (21). USE/ADVANTAGE - This method of reprofiling the wheels prevents the formation of continuous chips as the metal is removed from the wheel rim.
Patent DE-4010793-A1 (DE)
Title: Central heating radiator vent vessel - comprises bottle with tool opening and shutting vent valve
Inventor: SCHERER NORBERT
IPC: F24D19/08
Filed: 1990-04-04
Abstract: The vessel vents a radiator in a central-heating system, and collects the dischargedwater at the same tine as the vent valve is opened. It is bottle-shaped(1), and contains a tool(8-11) opening and shutting the valve (12). It can have a long thin neck (2) closed at the end and with a round side opening(4), behind which it widens (15). Thus the emerging water flows into the bottle even where the vent nipple(14) points upwards. ADVANTAGE - Easy access and water collection, even where space is limited.
Patent DE-4024182-A1 (DE)
Title: Automatic address delivery system for facsimile transmissions - has address data stored at transmitting device and transmitted in facsimile code prior to facsimile transmission
Inventor: MARKWITZ WERNHARD DR
IPC: H04N1/32
Filed: 1990-07-30
Abstract: The automatic address delivery system uses a memory at the transmission station holder the number of the transmitting subscriber in facsimile code, a second memory holding the number of the receiving station in facsimile code and a third memory holding the number and name of the receiving subscriber in facsimile code. The stored data is transmitted before the facsimile transmission to allow it to be printed at the top of each transmitted sheet. ADVANTAGE - Reduced overall transmission time.
Patent DE-4031777-A1 (DE)
Title: Dispenser for cold pre-mixed beverages - has serving tap connected to coil embedded in cooling block
Inventor: WODARCZAK HANS
IPC: B67D1/14
Filed: 1990-10-07
Abstract: The tap (10) for serving beverages is connected to a housing (4) by an adaptor (34) which also connects the tap to a coil of pipe (50) which is cast inside in a cooling block (54) inside the housing (4). A cooling pipe (52) is also cast inside this cooling block (54). The coils of pipes (50, 52) the cooling block and the adaptor (34) are all made from materials with a high thermal conductivity. The adaptor (34) is connected directly to the cooling block. The cooling block is made from pure aluminium with a purity standard of 99.5 percent. USE - Serving cold pre-mixed beverages.
Patent DE-4031999-A1 (DE)
Title: Phosphorus penta:sulphide continuous prodn. in 2 stages - with addn. of reactants to vapour phase in first small reactor to assist heat exchange
Inventor: ZSCHALICH ARNDT DIPL CHEM
IPC: C01B25/14
Filed: 1990-10-09
Abstract: Continuous prodn. of P pentasulphide (I) involves reacting yellow P with liq. S at above the m.pt. A fluid P sulphide (II) melt contg. over 28.2% P is produced in a first stage in a small reactor and converted to (I) by adding S in a second stage in a large reactor. The novel features are that in the first stage, the reactants are introduced into the vapour phase above the liq. level, so that vapour forms at the surface of the boiling liq. and (II) contg. at least 50% P4S3 forms in the vapour phase, and the (II) vapour is condensed in the condenser and introduced into the (II) melt. ADVANTAGE - The cost of mfr. and safety precautions is reduced, operation is safer than usual and the plant capacity is improved. The low m.pt. of a (II) mixt. with a high P4S3 content facilitates heat exchange, so that the heat exchanger system can operate at normal or slightly elevated pressure, instead of the usual high pressure. Corrosion in the (I) condenser is also reduced. Injecting the reactants into the vapour phase prevents the nozzles becoming blocked.
Patent DE-4036484-A1 (DE)
Title: Central lubrication device for underground mining machine - couples all lubrication lines via distributor to hydraulically-operated grease gun
Inventor: MERTEN GERHARD
IPC: F16N11/10
Filed: 1990-11-16
Abstract: The lubrication device has lubrication lines (1..5) leading to the individual lubrication points, coupled at the lubrication station to a distributor (6) supplied via a grease ejection gun (7) having a driven ejection piston (8). The latter is operated via a hydraulic cylinder (11), with its piston (12) coupled to the grease gun piston via a piston rod (13). Pref. the hydraulic cylinder is supplied via a magnetic valve (18) with a common control device (20) coupled to the latter and to the distributor. ADVANTAGE - Allows simple replacement of grease cartridge.
Patent DE-4037009-A1 (DE)
Title: Cylindrical waste bin with wall and top rim - has filler opening and two slots into which fit inner bag(s) which fold over top
Inventor: HILLER DOROTHEE
IPC: B65F1/06
Filed: 1990-11-21
Abstract: The cylindrical waste-bin (10) has a wall (11) and a top rim (14) round a filler-opening (12) in the wall (11). A bag (25) is placed inside the bin (10) so that its top edge (26) is folded over the top rim (14). The container's wall (11) has at least two slots (20, 21) extending at right angles from the top rim (14). The bag (25) is folded over only one part of the top rim (14) between two slots (20, 21). ADVANTAGE - The waste can be placed in separate bags inside the bin by means of slotting the bags into slots in the bin wall.
Patent DE-4037248-A1 (DE)
Inventor: BOECKEM JOCHEN DR ING
IPC: B60K31/00
Filed: 1990-11-23
Abstract: A traveling speed regulating device for motor vehicle provided with a drive motor and a transmission, has a transmission control for controlling the transmission, an electronic traveling speed regulator providing a nominal travelling speed, an adjusting member acting on the drive motor and changing a moment of the drive motor in dependence on a travelling speed deviation, and a further control means releasable in predetermined marginal conditions and adjusting a traveling speed by acting on the transmission control means of the transmission. The further control is designed so that a traveling speed which is over a nominal value in connection with a position of the control member which changes the moment of the motor in a zero position when the motor applies no power to wheels are provided as the marginal conditions.
Patent DE-4109161-A1 (DE)
Title: Developing latent electrostatic image - controlling amt. of developer consisting of carrier and toner by pressure of rigid cylindrical magnetic rod
Inventor: KASUYA TAKAHIRA
IPC: G03G13/08
Filed: 1991-03-20
Abstract: The developer is applied to a development zone subjected to an alternating electric field. The amt. applied is controlled by the pressure of a magnetic rod at a development zone formed on a developer conveyor at a radius of curvature of 0.5 to 15mm. The carrier is of magnetic granules with a coating of porous resin particles, each having a specific surface value BEJ of 5 sq.m. per g. to 150 sq.m. per g. and a wt.-cross-section particle size of from 1.5 to 5 microns. The granules are also formed from bound fine prim. resin particles of wt.-cross-section size of not more than 0.5 micron. The layer-like, coating is produced by dry layering. USE/ADVANTAGE - Contactless application of two-component developer. Stable developer layer produced of even thickness. Copies of good durability produced even after long usage.
Patent DE-4110504-A1 (DE)
Title: Cathodic protection of ship propellers - using an automatically adjustable resistor between the propeller shaft and the ship hull
Inventor: BOEHM DIETER DR SC TECHN
IPC: B63B59/00
Filed: 1991-03-30
Abstract: Adjusting cathodic protection of ship propellers uses a slip ring and contact brush system. A resistor placed between the propeller shaft (6) and the ship hull (1) is automatically adjusted at set instants with the use of control variables consisting of the cross-over voltage V1 between the shaft and the hull and the voltage V2 which is the potential of the cathodically protected ship hull, and is established via a measuring electrode (5). The resistor is adjusted so that the electrochemical potential of the bronze propeller is reduced by 200 mV in comparison with its free corrosion potential. The appts. incorporates a control unit (12) and an additional brush (9) between the propeller shaft (6) and the hull (1) for measurement of the cross-over voltage V1 by means of a voltmeter (10). USE/ADVANTAGE - The invention takes into account the fact that the electrochemical protection potential of the propeller bronze is about 0.3 V more positive than that of the steel ship hull. As a result, better corrosion protection becomes possible, with savings in the current consumption.
Patent DE-4117526-A1 (DE)
Title: Implement for cleaning ears - has oval head made of soft rubber attached to one end of short stick
Inventor: MATULLA KONRAD ED
IPC: A61F11/00
Filed: 1991-05-29
Abstract: The implement is for cleaning the ears and has a head of oval shape. The head is made of soft rubber and has small knobs or ribs formed on its surface. The head is mounted on a short stick from which it can be easily removed. After the implement has been used, the head can be thrown away and a new head can then be fitted to the re-usable stick. The soft rubber head eliminates the risk of harming the ear or eardrum. The stick can be fitted with different heads made from rubber of different degrees of hardness. USE/ADVANTAGE - Ear cleaner which reduces the risk of harming the ear.
Patent DE-4120345-A1 (DE)
Title: Protein fragments obtd. from middle region of Borrelia burgdorferi - for quantitative detection of B. burgdorferi antibodies in serum without false positive results
Inventor: RASIAH CHRISTIANE DIPL BIOL
IPC: A61K38/00
Filed: 1991-06-19
Abstract: New protein fragments (I), from the aminoacid 132-266 region of the flagellin of Borrelia burgdorferi, are encoded by DNA sequences which hybridise with the sequence of formula (I). USE/ADVANTAGE - (I) are used an antigens for sensitive and specific in vitro detection of antibodies specific for Lyme borrelosis Antisera raised against them show no cross-reactivity with flagellin proteins of other species (except weak reactivity with some other Borrelia species of little significance in Europe), i.e. (I) do not produce false positive in the same was as intact flagellin. Since (I) are small, microlitre plates coated with them can bind more specific antibodies than plates coated with flagellin, providing at least 3-fold increase in sensitivity.
Patent DE-4122560-A1 (DE)
Title: Damper for torsional oscillations - is fitted on IC engine output shaft and has extra weights with guides, and extensions supporting rollers
Inventor: BOLZMANN JOERG DIPL ING
IPC: F16F15/14
Filed: 1991-07-08
Abstract: The damper is for torsional oscillations in an output shaft, esp. for an IC engine.  It incorporates extra weights (6-9) mounted on a part (4) joined to the output shaft.  The extra weights (6-9) on the part (4) have guides (10,14; 11,15; 12,16; 13,17) allowing for radial movements.  The fixed part has peripheral guides (18,19). The extra weights (6-9) have extensions (20-23) supporting rollers (24-27) running parallel to the output shaft (2).  The extensions (20-23) fit into guides running peripherally. USE/ADVANTAGE - The drive unit for an IC engine is compact, containing the torsion-damper.
Patent DE-4123924-A1 (DE)
Title: Refractometric analysis esp. of liq. - by small number of measuring cycles in differential measuring cell
Inventor: NEBE WOLFGANG DR RER NAT
IPC: G01N21/41
Filed: 1991-07-19
Abstract: Material (esp. liq.) analysis, by measuring beam refraction produced in a differential measuring cell, involves (a) detecting position-dependent intensity values (Ai) in the refraction direction in successive steps of (i) summation of all the measured intensity values (Ai) to determine a total intensity (S) and thus partial intensities (S/2 and S/t, t = greater than 2) as upper limit values; and (ii) summation of the position-dependent intensity values (Ai) to form partial sums (S(h-1) and S(k-1)) having position characterising indices (i=h and i=k) such that the associated intensity values (Ah and Ak) increase the partial sums (S(h-1) and S(k-1)) to above the respective limit values (S/t and S/2); and (b) determining a diffraction value as a photo-metric mean (M), a scattering value (Wt) and a transmission value (T) from the intensities determined in steps (i) and (ii) and from depicted measurement widths (b) in the refraction direction. USE/ADVANTAGE - The process is esp,. useful for analysis of liqs. when turbidity changes are caused by dirt particles and/or light transmission variations occur during sample flow through the differential measuring cell. The number of interrogation cycles, required for high resolution, is small even when several parameters are to be determined and thus increased current sample information content is obtained.
Patent DE-4126659-A1 (DE)
Title: IC engine fuel supply system aiding cold start - by injection of auxiliary fuel into air intake for duration dependent on alcohol content of mixt.
Inventor: STEINKE DIETER
IPC: F02B1/04
Filed: 1991-08-13
Abstract: The main fuel is supplied from a tank (20) through an injection valve (7) into the inlet manifold (6) downstream from the outlet of a cold-starting aid (13) which inducts air through a port (14) and auxiliary fuel through a branch pipe (15) from the main fuel pump (17) and filter (19). The controller (24) incorporates injection and ignition calculators (25,26) responsive to sensors of crankshaft speed (27), intake air temp. (28) and fuel pressure (30), temp. (31) and compsn. (32). USE/ADVANTAGE - On motor vehicles burning mixts of petrol and alcohol. Starting is facilitated with allowance for peculiarities of mixts. of widely varying ratio.
Patent DE-4130048-A1 (DE)
Title: Optical multiplexer and demultiplexer for optical fibre communications - has structured waveguide layer formed in surface of doped semiconductor substrate
Inventor: SCHILLING MICHAEL DIPL PHYS
IPC: G02B6/28
Filed: 1991-09-10
Abstract: The optical multiplexer and demultiplexer, handling signals with a transmission rate of about 40 Giga bit/s, uses an optoelectronic semiconductor element (1) formed by a substrate (2) carrying a waveguide layer (41) which is structured to provide multiplexing or demultiplexing of the received signals. The substrate (2) comprises indium phosphide with an n-type conductivity provided with a Y shaped layer structure (4), incorporating in indium-gallium-arsenide-phosphide waveguide layer (41) covered by an indium phosphide layer (42) with a p-type conductivity and a contact layer (43) of indium-gallium-arsenide with a p+ doping. ADVANTAGE - Simple mfr. via epitaxial process.
Patent DE-4130777-A1 (DE)
Title: Solid electrolyte capacitor - comprises sintered anode, dielectric oxide layer, cathode of semiconducting metal oxide and safety mechanism
Inventor: SCHNABEL WERNER DIPL PHYS DR
IPC: H01G9/012
Filed: 1991-09-16
Abstract: Solid electrolyte capacitor (I) comprises a sintered anode, a dielectric oxide layer, a cathode made of semiconducting metal oxide, and an anode and a cathode connection. A current safety mechanism is arranged between the cathode connection and the cathode, the mechanism being made of electrically conducting and non-conducting regions. The safety mechanism (1) comprises conducting adhesive, partially arranged between the cathode and the cathode connection (3). In the prodn. of (I), the safety mechanism (1) is applied on the cathode connection (3) using a dosing appts., the capacitor element is cracked and the anode connection is welded to an anode wire (6), the conducting adhesive, serving as the safety mechanism, is then hardened. USE/ADVANTAGE - The capacitor is easy to mfr.. In the case of a short circuit, the current is shut off before the capacitor is able to ignite
Patent DE-4130856-A1 (DE)
Title: Two=stroke engine with heated carburettor - is for motor chain saw or similar and has crankcase connected with cylinder combustion chamber by overflow channels controlled by piston
Inventor: LANGER MICHAEL
IPC: F02M15/02
Filed: 1991-09-17
Abstract: Connected to the crankcase (3) is a carburettor (7) via an inlet channel (5). Connected to the carburettor is a hot chamber (25) acting as heat exchanger, which is connected to the interior of the crankcase (3) via a conduit (29) and a check valve (28). This conduit (29) is connected to the overflow channel (6) section located in the cylinder (2). The hot chamber (25) is vented in the suction connection (19) of the carburettor (7). The venting conduit (31) of the hot chamber in the flow direction (21) issues in front of or at the venturi section (20) in the suction connection (19). The hot chamber is built on to the carburettor and is limited by the cover (27) of the compensation chamber (23). USE - As a two-stroke engine with a heated carburettor for a hand-held tool, e.g. a motor chain saw.
Patent DE-4136455-A1 (DE)
Inventor: KNOEDEL GUENTER
IPC: B60K17/08
Filed: 1991-11-06
Abstract: A six-speed transmission has an input shaft (11), two layshafts (13, 14) and an output shaft (15). Gears (20 to 23) arranged on the input shaft (11) each mesh to form pairs with gears (30 to 33, 40 to 42) on the layshafts (13, 14). Shift sleeves (35, 36, 44, 45) serve for the rotational connection of in each case one of the gears (30 to 33, 40 to 42) of the pairs to the respective shaft (13, 14) carrying it, while the respective other gear (20 to 23) is rotationally connected to the shaft (11) carrying it. The layshafts (13, 14) furthermore each have a gear (34, 43) which meshes with a gear (50) arranged on the output shaft (15). Two gears (22, 23) on the input shaft (11) each mesh simultaneously with one gear (32, 33) on the first layshaft (13) and a further gear (41, 42) on the second lay- shaft (14). 
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Patent DE-4137174-A1 (DE)
Title: Digital electronic circuit for addition and subtraction of 5211 code - has gating circuit coupled between registers and processing logic for prevention of errors
Inventor: MERKLE PAUL
IPC: G07G1/12
Filed: 1991-11-12
Abstract: The circuit receives code numbers by registers (1, 2) that connect to addition (4) and subtraction (5) circuits. Located in the lines between the registers and processing stages is a gating circuit (6) controlled by signals from the control logic unit. The gating circuit is used to avoid an error being generated at the output when a value is to be subtracted from a previous result that is smaller in value. ADVANTAGE - Gating logic prevents error generation.