baber/WOPTO huggingface dataset:
Patent DE-3929077-A1 (DE)
Title: Acoustic identification and classification of helicopters - using mathematical model transforming ambient noise into frequency domain and identifying rotor frequency ratio from power spectrum
Inventor: REUTER MATTHIAS DIPL PHYS
IPC: G01H3/08
Filed: 1989-09-01
Abstract: Acoustic helicopter identification and classification from ratios of main and rear rotor frequencies involves repeatedly detecting background noise and feeding it into a mathematical model which transforms it into the frequency domain. A derived difference power spectrum is transformed into a multiplicatively weighted frequency difference power spectrum. A frequency diagram is generated in which the highest amplitude is defined as the main rotor frequency. The ratio of the second highest amplitude, corresp. to the rear rotor, to the highest amplitude is compared with typical stored values to determine the type. USE/ADVANTAGE - Helicopter types can be selected from undefined frequency mixes.
Patent DE-3931028-A1 (DE)
Title: Roll press with roll gap - has underlying wedge plate powered by vibrator to crush lumps issuing from gap
Inventor: STEINBISS EBERHARD DIPL ING
IPC: B02C4/28
Filed: 1989-09-16
Abstract: The roll press has counter-rotating rolls facing each other across a gap. Below the roll gap and spaced from this in parallel these should be a stop (15) to de-agglomerate the lumps (14) pressed out of the feed in the roll gap. The stop pref. consists of a plate (15) extending over the roll gap length and furnished where it faces with gap with wedge surfaces (16). The plate is arranged centrally to or clear of the gap, below this and connected to a vibrator. USE/ADVANTAGE - Crushing, e.g. cement processing. Expressed lumps reliably distintegrated on-line.
Patent DE-3932990-A1 (DE)
Title: Stone and plaster conservation - by in-situ treatment with aq. lithium poly:silicate soln.
Inventor: REUL HORST DIPL ING
IPC: C04B41/50
Filed: 1989-10-03
Abstract: Conservation of natural stone, natural freestone and historic plasters, esp. monuments, is effected by in-situ use of an aq. lithium polysilicate soln. which is free of Na, K and polymers and which has a max. viscosity of 10 mPas, a max. solids content of 30wt.% and a Li2O/SiO2 ratio of 1:3.5-7. Pref. consolidation and conservation are carried out by infiltration, flooding or injection. ADVANTAGE - The process is environment friendly, produces no deleterious byprods., has no negative affect or physical characteristics of the stone or plaster, has good capillary mobility, produces no colour changes in the stone or plaster, and has good penetration depth in not only highly porous but also finely porous materials to give high consolidation. (5pp Dwg.No.0/0)
Patent DE-3936522-A1 (DE)
Inventor: LICHTENTHALER FRIEDER W
IPC: C09K23/56
Filed: 1989-11-02
Abstract: The invention relates to a process for converting isomaltulose into 5-( alpha -D-glucopyranosyloxymethyl)furan-2-carboxaldehyde (GMF), specifically by heat treatment of its solution in the presence of an acidic ion exchanger batchwise or by percolation through a column packed with ion exchangers. 
<??>The invention also relates to the preparation of derivatives and secondary products of GMF according to the general formula (I) 
<IMAGE>
 in which R<'> is a hydrogen atom, an acyl radical or alkyl radical, and X is either -CH2OH, -COOH, -C(H)=NOH, -CN, -CH2NHR<''> or CH=CR<''>R<'''> (with R<''> = H, acyl radical, aryl radical or alkyl radical with up to 20 C atoms and R<'''> = H, -NO2, -CN, -COOalkyl or acyl). 
<??>The invention furthermore relates to the use of the compounds for preparing surface-active substances.
Patent DE-3937557-A1 (DE)
IPC: G03F7/20
Filed: 1989-11-10
Abstract: In the context of a device for producing printing plates comprising a printing down station with a plate table and an associated illuminating means, which station has associated with it a foil receiving means formed preferably constituted by a foil cassette for unprinted foil and preferably at least one receiving cassette for printed foil, in the case of which the foil to be printed onto an unexposed or blank printing plate is able to be taken from a foil receiving means by means of a moving vacuum frame, is able to be moved onto the blank plate on the plate table and after exposure is able to be discharged, preferably into a receiving cassette, a higher throughput rate and a gentle handling of the foils etc. with a high standard of accuracy are possible by the provision of a plurality of vaccuum frames, of which at least two are attached to the periphery of at least one frame carrier, which is able to be turned through the angle between the vacuum frames, such attachment being a points which are offset from each other by the length of the path between the at least one foil receiving device and the plate table.
Patent DE-3939275-A1 (DE)
Title: Tool for opening bottle of milk - is in form of pliers with pointed pin to pierce hole in bottle cap
Inventor: NEUBAUER RUDOLF
IPC: B67B7/50
Filed: 1989-11-28
Abstract: The tool is for piercing a hole in the cap of a milk bottle in order to enable the milk to be poured out. The tool resembles a pliers with two arms (3,4) and two jaws. The first jaw has a roughened surface (1) to grip the neck of the bottle. The second jaw forms a guide for a sliding pointed pin (2) which can be driven through the bottle cap to make the required hole. The tool opens bottles easily and avoids the risk of spilling the milk. USE - Opening milk bottles.
Patent DE-3939821-A1 (DE)
Title: Tension device for continuous drive mechanism - consists of toothed belt drive with drive and driven wheel, and two tension pieces
Inventor: EHRET WOLFGANG DIPL ING
IPC: F01L1/02
Filed: 1989-12-01
Abstract: The tension device for a continuous drive mechanism, especially for a toothed belt drive, (10) has at least one drive wheel, a driven wheel and a tension-device possessing a pre-tensioned piece of force (F1). On the pulley side is a second tension piece (36) pre-tensioned with a force F2, with F1 equal or greater than F2. The second tension piece has less force F2 than the first and has a fixed stop piece (50) with rubbery elastic part (52). The tension pieces are in the form of wheels (23, 36) with the first one possessing a shock absorber (24). USE/ADVANTAGE - The tension device avoids overriding or working fluid losses.
Patent DE-3941770-A1 (DE)
Title: Stationary flat card for cotton and synthetics - features several combing drums upstream from main drum, feeding several outlets
Inventor: BONINO GIANFRANCO
IPC: D01G15/08
Filed: 1989-12-18
Abstract: A stationary flat card for cotton and synthetic fibres features several combing drums upstream from the main drum.  combing drums feed several outlets and means are provided for adjusting the intermediate space between the individual combing  drums and the main drum.  As a result the material volumes removed from the individual combing drums are adjusted. ADVANTAGE - The card has a simple structure and permits high productivity.
Patent DE-4007318-A1 (DE)
Inventor: REHMER GERD DR
IPC: C09J133/26
Filed: 1990-03-08
Abstract: Ethylenically unsaturated compounds of the general formula I <IMAGE> (I)  where R1 is alkyl of 1 to 4 carbon atoms, cyclopropyl, cyclopentyl, cyclohexyl, phenyl or phenyl in which some or all of the hydrogen atoms have been replaced by radicals R4, not more than two substituents R4 being identical, or R1 together with R2 or together with R6 forms a -CH2-CH2- or -CH2-CH2-CH2- bridge, R4 is alkyl of 1 to 24 carbon atoms, -OH, -O-R7, -S-R7,  <IMAGE>  <IMAGE>  <IMAGE> <IMAGE>  R2 or R6, independently of one another, both are hydrogen, or one of the radicals R4, or, where R1 is aryl, R2 or R6 is a direct bond to R1 in the ortho-position with respect to the carbonyl group, and R3 and R5 are each hydrogen, one of the radicals R4 or a group the general formula II   <IMAGE> (II)  where R7 and R8 are each alkyl of 1 to 4 carbon atoms, R9 is cycloalkyl of 5 or 6 carbon atoms, R10 is hydrogen or alkyl of 1 to 4 carbon atoms and R11 is hydrogen or alkyl of 1 to 4 carbon atoms, with the proviso that either R3 or R5 is a group of the general formula II, are suitable for the preparation of polymers which, after exposure to actinic radiation, have increased internal strength.
Patent DE-4012704-A1 (DE)
Title: Detachable sections bus with corridor coupling - includes two axle carriage part(s) and single axle semi-trailer carriage part(s)
Inventor: URSTOEGER RUPERT
IPC: B62D47/02
Filed: 1990-04-20
Abstract: The carriage parts (1-6) are connected jointed together and at least one of the axles is driven. The wheels (8, 9) of at least one axle can be steered. At least one carriage part (1-6) is partitioned in to at least one transport section (10) for passengers and/or useful load and at least one engineering functional set section (11), at right angles to its longitudinal axis. The floor of the carriage part is low lying esp. at a single step height from the ground. The necessary sub-systems and elements for the drive, steering, control, energy storage, heating, air conditioning and supplies can be accommodated in the set section (11). The rear axles of the two axle carriage part (1) and the axles of all the one axle carriage parts (2-6) can be driven. The wheels (8, 9) of an axle are electrically driven by a motor (17) across a differential gear box (18) and half shafts. The wheels (8, 9) can be driven electrically by individual wheel drives (19, 20). The carrying structures of the carriages parts (1-6), at least the set section are built in fibre reinforced construction. USE/ADVANTAGE - Simple construction matched to passenger in view of flexible construction. Machinery and equipment arranged for easy servicing and maintenance.
Patent DE-4013897-A1 (DE)
Title: Hot water heating plant - has degasser pressure maintaining station with equalising vessel diaphragm penetrating level tube
Inventor: BARTH EBERHARD
IPC: F24D3/10
Filed: 1990-04-25
Abstract: The degasser for a pressure maintaining station for a water heating installation, consists of an equalising vessel (11), in which a preset equalising vol. of water is stored in a rubber membrane (12). A vent tube connects the air in the vessel with the ambient atmos. The equalising vessel has a level indicator tube (27), extending down into the membrane, and contg. a degassing valve (22). ADVANTAGE - Controlled degassing.
Patent DE-4015647-A1 (DE)
Title: New triazolo-(4,3-a)pyridine(s) and N'-(2-pyridyl)-hydrazone(s)
Inventor: GEISLER JENS DIPL CHEM DR
IPC: C07D401/12
Filed: 1990-05-11
Abstract: Substd. 1,2,4-triazolo-(4,3-a)pyridines of formula (I) and substd. N'-(2-pyridyl)hydrazones of formula (II) for use in herbicidal compositions are new, where A = 5-membered heterocycle (comprising 1-3 of N, O or S; ring C's opt. substd. with halo, 1-4C alkyl or halo (1-4C)alkyl and 1 ring N is opt. substd. with 1-4C alkyl), 1-10C alkyl (opt. substd. with B), 2-10C alkenyl (opt. substd. with B, or 2-10C alkynyl (opt. substd. with B); B = halo, Cn, 3-6C cycloalkyl, halo-(3-6C)cycloalkyl, cyano-(3-6C)cycloalkyl, 1-4C alkyl-3-6C cycloalkyl, halo(1-4C)alkyl-(3-6C) cycloalkenyl, halo(1-4C)alkyl (3-6C)cycloalkenyl, cyano (1-4C)alkyl (3-6C)cycloalkenyl (i), 3-8C cycloalkyl (ii) or 3-8C cycloalkenyl; (iii); (i), (ii) and (iii) are opt. substd. with halo, CN, 1-4C alkyl, halo(1-4C)alkyl, cyano (1-4C)alkyl, 2-4C alkenyl, halo(2-4C)alkenyl, cyano(2-4C)alkenyl, 2-4C alkynyl, halo(2-4C)alkynyl, cyano(2-4C)alkynyl (iv), Ph(v) or benzyl (vi); R1 = halo, Oh, 1-6C alkyl, halo (1-6C)alkyl, 1-6C alkoxy, halo (1-6C)alkoxy, 1-6C alkylthio, halo(1-6C)alkylthio, 1-6C alkylsulphinyl, 1-6C alkylsulphonyl, 1-6C alkoxy; carbonyl, phenyl (1-6C) alkoxycarbonyl, Ph, phenoxy.
Patent DE-4020966-A1 (DE)
Title: Detection of sulphated oligo- and polysaccharide(s) - using poly base, and methylene blue opt. with an oxidising agent or auramine
Inventor: MAGERSTAEDT MICHAEL DR
IPC: G01N27/447
Filed: 1990-06-30
Abstract: An electrophoretic process for the detection of sulphated oligo and polysaccharides and their derivs. uses, for the detection reaction, a poly base, methylene blue opt. in combination with an oxidising agent or auramine. The polybase is lysine octadecyl ester, polylysine or polydimethyl amino ethyl aspartamide, and is esp. labelled with a fluorescence label or a radio label. Methylene blue is used opt. with ammonium persulphate as the oxidising agent. A surfactant is used in the electrophoresis. A gel with molecular sieve effect is added, esp. a gel with a polyacrylamide conc. of at least 10%. USE/ADVANTAGE - The process is rapid and simple and can be used clinically. Unlabelled sulphated saccharides can be quantitatively and qualitatively determined, and any structural changes in these cpds. can also be detected. The process can therefore be used in the monitoring of treatment of AIDS using sulphated oligosaccharides and to determine the correct dose needed and suitable intervals between doses.
Patent DE-4025603-A1 (DE)
IPC: B28B21/94
Filed: 1990-08-13
Abstract: Apparatus for finishing concrete pipes with a rotating tool-holding arm (59; 65, 66; 86, 90) and a tool (61; 81; 91, 92) for finishing the pointed end (2) of concrete pipes, in order to achieve their protection against corrosion by coating as well as a lasting sealing effect. <IMAGE>
Patent DE-4025838-A1 (DE)
Title: Deep surface material cleaner - has rotating angled needle to detach debris with surface structure for suction removal
Inventor: HARMS HEIKO
IPC: D06G1/00
Filed: 1990-08-16
Abstract: To clean a material with a structured surface depth, such bristles or to clean floor covering underlays of threads and lint etc., the unwanted matter is at least partially grasped from below and directly, and lifted clear. Pref. the debris is caught by suction and then lifted in a parallel time operation. The cleaning unit (12) is inserted into the surface structure of the material, and it itself cleaned of any clinging matter from time to time, and pref. regularly, by scraping it along the material being cleaned. ADVANTAGE - The method gives a rapid, economic and low-wear cleaning action.
Patent DE-4027454-A1 (DE)
Title: Pulsed flat light source for reflection characteristic measurement - uses toroidal light tube behind housing cover with central light exit opening
Inventor: FLEISCHER JOANNES DR ING
IPC: F21V7/00
Filed: 1990-08-30
Abstract: The light source to measure the reflection characrteristic of a test sample, uses a toroidal light tube (4) contained within a housing (1) which is fitted with a round cover (2) having a light exit opening (3) at its centre. The light tube (4) lies in a plane parallel to the cover (2) at a short distance behind it, the output light received by an externaly condenser lens (5) coaxial with the light exit opening (3). - Pref. the light tube (4), the light exit opening (3) and the condenser lens (5) are arranged so that no direct light from the tube (4) is received by the lens (5).
Patent DE-4032116-A1 (DE)
Title: Pneumatic false twist spinner -  winds yarn on an intermediate bobbin without repairing yarn breaks which are spliced at a winding station
Inventor: STAHLECKER FRITZ
IPC: B65H65/00
Filed: 1990-10-10
Abstract: To produce cross wound bobbins at a spinning assembly, with a number of pneumatic false twist spinning stations, the yarns spun at the stations are wound on intermediate cross wound bobbins without joining the yarn to a previously spun yarn or to a following yarn after a yarn break. The final cross wound bobbins are formed at a winder station. On a yarn break at the spinning station, the spinning is stopped while the end of the newly-spun yarn is laid on an intermediate cross wound bobbin and spinning is resumed without repairing the yarn break. On a yarn break, the newly spun yarn can be laid on a new bobbin sleeve for an intermediate cross wound bobbin, when the previous intermediate bobbin has been removed. When the spinning station has been stopped, through a yarn break, the dia. of the intermediate bobbin is registered and compared with a preset value, to determine whether the intermediate bobbin should be removed and replaced with a new sleeve or whether it should continue in service. The end of the broken yarn is laid at a given point on the intermediate bobbin and, at the winder, the trailing end of the wound yarn is laid at a given point in a preparation station. During winding, when it comes to the end of a broken yarn, the intermediate bobbin is removed and the new leading end is repositioned before the intermediate bobbin is returned to the winder. ADVANTAGE - Any breaks in the yarn are ignored at the spinning station, so that the spinning operation is maintained at a high level of productivity. The yarn is spliced at the winder, as requried, where the cross wound bobbins are produced.
Patent DE-4032325-A1 (DE)
Title: Eccentric operator drive for bin outlet, controlled discharger -  where drive oscillates raking grid between bin outlet and underlying fixed perforated plate
Inventor: TOEGEL ALFRED
IPC: B65G65/44
Filed: 1990-10-11
Abstract: A discharge drive unit for granular solids containing bins, comprising a movable rake element, and being novel in employing a motor driven eccentrically mounted connecting rod as the operator. USE/ADVANTAGE - A low capital and operating cost, controllable discharger, requiring minimal energy in order to start up and to be self-cleaning by break up of residual, or over-size, material. The unit has a brake enabling the raking grid to be stopped at the maximum amplitude position where it can exert maximum mechanical advantage on start-up from rest, and also be able to close off the flow by stopping the raking grid at a position where its apertures are out of phase with the openings in the underlying fixed plate. The device can be used for emptying solid-bed adsorbers containing activated-C granules.
Patent DE-4035509-A1 (DE)
Title: New cyclohexyl-cyclohexene cpds. uses in liq. crystal medium - for LC or electro=optical display with low viscosity
Inventor: BARTMANN EKKEHARD DR
IPC: C07C25/18
Filed: 1990-11-08
Abstract: New cyclohexylcyclohexenes are of the formula (I) (where n is 1-12; r is 0 or 1; s is 1 or 2; A is a gp. of formula (a), (b) or (c); L1 and L2 are H or F; Y is H, F or Cl; Q is a single bond, -CF2-, -OCF2- or -OCHF-; and if Q is a single bond, L1 is L2 is F. USE/ADVANTAGE - (I) are claimed for use as components of liq. crystal (LC) media, esp. in LC displays and the dielectric of electro-optical displays. They are useful in displays of the twisted cell, guest-host, deformation aligned phase and dynamic scattering type. (I) are stable LC or mesogenic cpds. and have relatively low viscosity and high dielectric anisotropy. They form stable LC media with a wide mesophase range and favourable optical and dielectric anisotropy and very good low temp. properties.
Patent DE-4036823-A1 (DE)
Title: Electrical power generating device for gas-fired water heater - uses electrolytic fuel element associated with each burner flame
Inventor: MACH WENZEL DIPL ING
IPC: H01M8/1231
Filed: 1990-11-19
Abstract: The electrical generation device for a gas-fired water heater uses an electrolytic fuel element (1) in the working range of each gas burner flame (32) associated with a converter allowing the carbon monoxide to be converted into carbon dioxide and hydrogen and a DC/AC converter allowing the generated DC voltage to be converted into an AC voltage. - Pref., the converter has a fan allowing combustion air to be fed to the converter, controlled by a flame monitor together with the water circulation pump and the gas supply valve.
Patent DE-4039494-A1 (DE)
Title: IC engine with camshaft separate from camshaft wheel - makes use of radial drive lever to connect shaft with the wheel
Inventor: MALLINCKRODT ULRICH VON
IPC: F01L1/356
Filed: 1990-12-11
Abstract: The arrangement of a camshaft and a camshaft drive wheel is accommodated in a housing in an IC engine. The camshaft (10) and the camshaft drive wheel (15) are mounted independently of each other. A radial drive lever (14) is fitted at the end (13) of the cam shaft and engages a modulator ring (16) on the wheel which is displaceable in both directions relative to the shaft by an amount (a). USE/ADVANTAGE - Cam shaft arrangement which enables the characteristics of the IC engine to be varied during the running of the engine.
Patent DE-4104601-A1 (DE)
Title: Reception data processing circuit for local transmission network - has storage of data extracted from received data sequence in data store
Inventor: SHIOBARA YASUHISA
IPC: H04L12/28
Filed: 1991-02-12
Abstract: The circuit has a reception store (25) for the data received at a number of nodes, allowing information exchange between the latter. Each node has a transceiver (21) for reception and transmission of a data sequence, with a token reception and transmission control (23) evaluating the target address of the received data sequence, to allow an end signal to be supplied. A storage access control (24) responds to the end signal, to read the required data from the received data sequence and feed it to the data store, its storage address entered in an address conversion store (41). Externally entered addresses are processed to obtain corresp. storage addresses allowing read-out of the stored data. USE - For local communication network for computer system.
Patent DE-4107765-A1 (DE)
Inventor: SZIEGOLEIT ANDREAS
IPC: G01N33/573
Filed: 1991-03-11
Abstract: The description relates to a process for obtaining a highly specific pancreas-elastasis-1-antibody which reacts with both bodily fluids and stools. Such an antibody is obtainable by immunisation with an antigen which has the amino acid sequence Thr-Met-Val-Ala-Gly-Asp-Ile-Arg or immunologically active partial peptides thereof. A test kit containing such antibodies is suitable for the diagnosis and monitoring of chronic and acute pancreatitis and mucoviscidosis in bodily fluids and/or stools.
Patent DE-4109742-A1 (DE)
Title: Assembly to filter water circulating within paint spraying booths - has water basin at base of paint spray booth incorporating filter located in sequence of horizontally arranged unsupported hoses
Inventor: HINTZE PETER
IPC: B05B14/468
Filed: 1991-03-25
Abstract: A water basin at the base of a paint spray booth or cabin incorporates a filter. The filter is located within a sequence of horizontally-arranged unsupported hoses floating in water. The water from which paint residues are to be removed is drawn into the hose filter by a pump with one inlet for paint-laden water and a second inlet for an emulsifier. The filter hose is pref. made of an external bag with shape-maintaining strength and an inner filter gauze whose unfolded dia. is greater than that of the outer sheath. The inner filter bag is joined with the outer hose only at the inlet and end. The filter hose rests horizontally in the water basin. USE/ADVANTAGE - The arrangement facilitates the construction of a paint spray booth incorporating a filter which removes paint residues from water. The filtration process is simple and reliable to operate.
Patent DE-4113187-A1 (DE)
Title: Marking absorbent material with thermally stable colourant - by applying mixt. of cobalt and aluminium salts in soln.
Inventor: KRETSCHMER HELMUT DR
IPC: C09D11/00
Filed: 1991-04-23
Abstract: Marking an absorbent material with a thermally stable colourant comprises the application of a mixt. of a soln. of a cobalt salt and a soln. of an Al salt to the absorbent material, and the stabilisation of the marking applied in this way by subsequent heat treatment at temps. above 400 deg.C. The use of a mixt. of a soln. of a Co salt and a soln. of an Al salt for marking the material is also claimed. USE/ADVANTAGE - The process is used for labelling or inscribing absorbent articles, mainly those which are subsequently subjected to high temps., e.g. catalysts supports, ceramics, refractories, etc.. The process enables articles to be marked during their mfr., are opposed to after a subsequent heat-treatment step, and therefore provides better process control. The markings are still legible heat-treatment under acid, oxidisng or reducing conditions.