baber/WOPTO huggingface dataset:
Patent DE-4008078-A1 (DE)
Inventor: SCHRODI KARL DIPL ING
IPC: H04L12/56
Filed: 1990-03-14
Abstract: Starting point: The sequence is known of a copying switching matrix, a distribution switching matrix and a destination switching matrix on the one hand, and on the other hand a switching matrix in which copying can be carried out in every stage. 
<??>Technical problem: Real operation is a mixture of point-to-point connections, point-to-multipoint connections with few branches and point-to-multipoint connections with many branches. The overall traffic and its individual constituent parts are constantly changing. The known structures are optimised in each case for one specific traffic type in one direction only. 
<??>Fundamental concept: The switching elements of a switching matrix which is optimised for point-to-point connections contain the additional facility for copying a small number of input signals for any number of outputs, whereby a very large number of copies can be achieved overall for a very small number of input signals. This switching matrix is supplemented by a copying switching matrix, which serves solely to produce in each case a limited number of copies for a large number of input signals, which are then switched in the (main) switching matrix as point-to-point connections. 
<??>Solution: Point-to-point connections are operated as "connectionless connections" by means of automatic switching element control. It is ensured that these connections act outwardly as virtual connections. Point-to-multipoint connections are also operated in the main switching matrix as virtual connections (connection-oriented) by means of connection tables. 
<??>Advantage:Interference-free rearrangement of existing virtual connections possible. Very even utilisation of the (main) switching matrix as a whole. 
<??>Disadvantage: Switching elements with two different addressing facilities required. 
<IMAGE>
Patent DE-4009162-A1 (DE)
Title: Toilet fume extractor with source of germicidal radiation - draws air by suction from bowl into deodorising filter, and recycles clean disinfected air to atmos.
Inventor: GROEBE KARLHEINZ
IPC: E03D9/052
Filed: 1990-03-22
Abstract: Between the cistern (2) and the toilet bowl (1), a housing (5) is interposed contg. an enlarged water pipe (3a) with a branch (6) upward to an active carbon filter (7), through which fumes are drawn by a fan (9) into a space contg. an ultraviolet lamp (11). Purified air is released through nozzles (10) into the area around the bowl.  The fan (9) and lamp (11) may be switched-on by lifting of the lid (13). USE/ADVANTAGE - In hospital and public toilets.  Compact device can be retrofitted easily to existing flush systems.  Air is disinfected and deodorised sufficiently for recirculation.
Patent DE-4015581-A1 (DE)
Title: Double steel band press for e.g. chipboard - has extra e.g. induction type heater at entrance to heat edges of bands under close control to compensate for heat losses
IPC: B27N3/24
Filed: 1990-05-15
Abstract: The system operates a continuous press for the prodn. of chipboards, fibre boards, laminates etc. The press has two endless steel pressure bands passing round the top and bottom of the press and round guide rollers; they are controlled along their straight paths; they form the press daylight where (at least) they are heated by heated plates and (if required) also by a hot roller. Before they enter the daylight area the longitudinal edges of the bands are heated additionally; this heating being regulated so that is compensates for the heat losses which arise at the edges. The two steel bands (4) pass round guide rollers (3) before entering the mouth (5) of the press proper (6). In the latter area (6), they (4) move over heated plates and can also be heated again by the roller (3). At the entry end (5) there is a heater (7) which heats the edges of the bands. ADVANTAGE - The system ensures that both the steel bands and the pressed material do not suffer temp. drops during operations.
Patent DE-4018598-A1 (DE)
Inventor: MUTSCHLER OTTO
IPC: B43K5/18
Filed: 1990-06-09
Abstract: The invention concerns a writing unit for a cartridge fountain pen, with a nib (1), a gripping-piece (2) and an ink-feed unit (3). The ink-feed unit (3) has lamella-like ink-holding chambers (3e). A capillary channel (3a) passes longitudinally along the whole length of the ink-feed unit (3) on the nib side of the ink-feed unit (3). An air channel (3c) extends out radially from the capillary channel (3a). So that ink does not drip out of the slit in the nib, particularly when the ambient temperature varies considerably, and to ensure that the ink-feed unit is suitable for broad-lettered writing, the writing unit is designed so that the air channel (3c) extends longitudinally over the whole length of the ink-holding chambers (3e) up to a control line (3g) which is formed at the end of the chambers (3e) nearest the nib (1) and which acts as a liquid valve. The air channel (3c) is delimited in the radial direction by a surface opposite the capillary channel (3a), and the air channel (3c) extends, on the side opposite the capillary channel (3a), up to overflow capillaries (3d) linked to the ink-holding chambers (3e) so that liquid can flow between the two.
Patent DE-4036347-A1 (DE)
Title: Device for reducing dust in roller crusher - has water nozzles fitted inside crusher housing
Inventor: REITH HANS
IPC: B02C4/10
Filed: 1990-11-15
Abstract: The crusher roller (4) has nozzles internally arranged which are fed with high pressure water, and connected to the requisite high pressure pump (5) which in turn is coupled to the drive (6) of the crusher roller (4). The crusher roller has a number of water nozzles corresp. to the number of striker nose formations. The internal arrangement for high pressure water in the crusher roller comprises a rotary through feed coupled to the shaft of the roller (4), a central water feed, and a water distribution device between the shaft and the roller, with channels leading to the nozzles. The nozzles screw into the ends of the corresp. channels, and are therefore exchangeable. USE/ADVANTAGE - To combat dust produced during roller crusher operations.
Patent DE-4040538-A1 (DE)
Inventor: GUENTERT ENGELBERT
IPC: E04B1/26
Filed: 1990-12-18
Abstract: The invention concerns a connector for at least two abutting beams (10, 12), in particular beams used in the construction of series-built houses, etc. The invention calls for a tube-like insert (18) with at least one aperture (30) in one side (32), which is planar, of the tube. A crossbar (40), designed to fit against the inside surface (29) of the side of the tube, and to slide along this surface, is used in conjunction with the insert (18). This crossbar (40) has at least one oblong aperture zone (44) whose width (n) is less than the diameter (e) of the head (36) of a screw (34) which passes through the aperture (30).
Patent DE-4101642-A1 (DE)
Title: Spindle press with hydraulic retracting ram - has piston rod gap coupled to discharge line and to suction and delivery line via piston
Inventor: EGGELS HEINZ
IPC: B30B1/18
Filed: 1991-01-22
Abstract: The spindle press has a retracting ram connected to a hydraulic system. The piston rod is surrounded on the outlet side by two sealing ring units with a gap (16) between them. The gap is connected to an outlet conduit (17) and the piston rod-free space (18), above the piston (19), is connected to a suction and discharge conduit (20). The outlet and discharge conduits are inter connected and are coupled via a common return conduit (22) to the tank (23) of the hydraulic system. Non-return valves (24, 25) are located in the outlet conduit between the gap and connection point (21), and in the outlet conduit. ADVANTAGE - No pressure medium, or mixt. with air, discharge to environments.
Patent DE-4103122-A1 (DE)
Title: Crucible furnace suction hood - has two chambers for selective coupling to the suction connection providing protection to ambient environment during charging, smelting and pouring
Inventor: GROSS RUDOLF
IPC: F27D1/18
Filed: 1991-01-31
Abstract: The swing suction extn hood for a tilting crucible furnace, electro-furnaces such as induction crucible furnaces with a built-in crucible cover and suction connection together with a nozzle, has at least two suction chambers (9,10) which can be coupled selectively to the suction connection (11). One chamber (9) gives suction for the molten metal and pouring, with a suction opening (16) over the nozzle (3) of the furnace (1). The other chamber (10) gives suction for charging, with a suction opening (13) at the edge (14) of the suction hood (7) away from the pouring side (5) of the furnace (1). ADVANTAGE - The hood assembly gives the best suction action, with min. suction power, with positive protection of the ambient environment during charging, smelting and pouring.
Patent DE-4107595-A1 (DE)
Title: Plasma sprayed metallic catalyst coating mfr. - useful in prepn. of palladium@ catalysts for removal of hydrogen@ from potentially explosive gaseous hydrogen@/oxygen@ mixts.
Inventor: KLATT KARL-HEINZ
IPC: B01J37/02
Filed: 1991-03-09
Abstract: Process for prodn. of a metallic catalytic layer, serving to remove hydrogen from a gas mixt. contg. hydrogen and oxygen, and consisting of a metal, or alloy thereof, capable of catalytically influencing the oxidn. of hydrogen, used either alone or presented on a carrier material. A porous catalytic layer is burned on to at least part of the carrier surface by plasma spraying. USE/ADVANTAGE - Catalytic coating technique which is more economic, and provides improved adhesion to the substrate, than the `metal sputtering' process. Such catalysts are useful for removal of hydrogen from potentially explosive gaseous H2/O2 mixtures, such as may occur in nuclear power installations.
Patent DE-4108626-A1 (DE)
Inventor: KAPPES ELISABETH DR
IPC: C11D3/20
Filed: 1991-03-16
Abstract: Esters are disclosed of citric acid or acetylcitric acid anhydride with compounds containing at least 3 OH groups selected in the group formed by polyglycerine, sucrocarboxylic acids, alkylglucosides, derivates of oligosaccharides, aminosorbit, aminodisorbit, glucosamine, triethanolamine and trishydroxyethyl-melamine, in which each OH group of the ester alcohol components is esterified in average with 0.15 to 1 molecule citric acid or acetylcitric acid anhydride. Also disclosed is the use of these citric acid esters as additives to phosphate-poor or phosphate-free washing and cleaning products.
Patent DE-4120258-A1 (DE)
Title: Epitaxial prodn. of high temp. superconducting layer on substrate - by sputtering intermediate metal oxide layer on substrate, and then depositing superconducting layer
Inventor: BEHNER HEINRICH DR
IPC: H01L39/24
Filed: 1991-06-19
Abstract: Epitaxial prodn. of a high temp. superconducting layer on an epitaxial surface of a Si substrate is claimed, in which an intermediate layer of metal oxide material is initially sputtered at elevated temp. onto the substrate, and then the superconducting layer is deposited on this. The lattice constant of the metal oxide is compatible with the substrate material and also the superconductor. The novelty is that the intermediate layer (4) is formed by : (a) initially applying a base layer (4a) of a few atoms thick (d1) of at least one metallic component of the intermediate layer onto the substrate (5) oxidised on its surface (5a) to SiO2 using an O2-free gas, so that at elevated temp. the metallic component is oxidised and the SiO2 reduced; and (b) depositing the metal oxide intermediate layer (4) onto the base layer (4a). ADVANTAGE - The metal oxide intermediate layer is formed as a buffer layer so that specific pre-cleaning of the substrate surface is not required.
Patent DE-4123367-A1 (DE)
Title: Vehicle fuel tank with reserve section near pump - has return fuel flow driving venturi pump to top up reserve section
Inventor: ROTTENKOLBER LUDWIG DIPL ING
IPC: B60K15/077
Filed: 1991-07-15
Abstract: The electrically driven fuel pump (7) is mounted in the reserve section (3) and is provided with fuel even with the main tank at a low level. This is achieved by having the surplus return flow of fuel driving a venturi pump (23) in the bottom of the tank and filling the reserve section (3). A non-return valve (30) at the bottom of the reserve section fills the reserve when first filling the tank. A higher fuel level in the main tank compared with the reserve section opens the non-return valve. A higher hydraulic pressure in the reserve section holds the non-return valve closed. The pump output duct (15) and the return flow duct (20) are mounted into the fuel tank cover. ADVANTAGE - Fuel pump is constantly primed; no fuel starvation problems if parked on slope.
Patent DE-4124037-A1 (DE)
Title: Noise-free signal transmission system - divides signal into sections processed to provide two signal components transmitted sequentially
Inventor: BENDER ERNST ALBRECHT
IPC: H04B1/66
Filed: 1991-07-19
Abstract: The transmission system has the signal to be transmitted divided into individual sections which are compressed and subjected to a Fourier transformation, with the respective components of a 2-component signal provided by the compressed signal sections and the transformed and subsequently compressed signal sections. The 2-component signal is sequentially transmitted, with separation of the 2 components at the reception end. Both components are expanded and the second component is subjected to a reverse transformation before addition of the 2 components for reconstruction of the transmitted signal. USE - For information transmission.
Patent DE-4125587-A1 (DE)
Title: Gripper for loading ammunition into gun - has sliding arm and swinging arm actuated by double eccentric shaft
Inventor: NORDMANN ADOLF
IPC: F41A9/10
Filed: 1991-08-02
Abstract: The piece of ammunition (2) is loaded into a gun by a gripping device supported on an arm (20). The arm (20) carries a shaft (7) with two eccentrics. When the shaft is rotated the upper eccentric which engages a bush (5) in the sliding arm (3) imparts a sliding motion to the arm (3). The lower eccentric actuates a link (6) which imparts a swinging motion to the swinging arm (4). The piece of ammunition is thus gripped between the sliding arm (3) and the swinging arm (4). The ammunition can be released by reversing the rotation of the shaft (7). ADVANTAGE - Only a light force has to be applied to actuate the gripper.
Patent DE-4126351-A1 (DE)
Title: Controlling the polar of a laser beam - by monitoring radiation reflected from the workpiece at the working area and using the monitored average temp. as a control parameter
Inventor: DRENKER ALEXANDER J DIPL ING
IPC: C21D1/09
Filed: 1991-08-09
Abstract: Controlling the working of a workpiece surface is by using a laser beam (11) in which the radiation (16) emitted from the surface at the point of the focussed beam (17) is directed to an optoelectronic measuring device (26) which is in turn connected to a regulating device for adjusting the power of the laser beam. USE/ADVANTAGE - In conversion hardening, alloying, melting, coating etc. the surface of workpieces. The radiation emitted from the focussed beam can be monitored without affecting the flexibility of the laser beam as it works an area of the workpiece. The method can be regulated with excessive expenditure.
Patent DE-4128490-A1 (DE)
Title: New cationic thiazole azo dyestuff cpds. - used on polyacrylonitrile or paper or keratinous material, prepd. from methyl amino carbo-methoxy-thiazolyl-acetate and tert. aniline
Inventor: NOACK HORST DIPL CHEM
IPC: C09B44/20
Filed: 1991-08-28
Abstract: New cationic thiazole azo dyestuffs are of the formulae (I) and (II), A = a gp. derived from an N,N-di-substd. aniline C6H5-NR1R2, R1 = Me, Et or benzyl, R2 = Me, Et or -CH2CH2N(R5)(R6)(R7), R5-7 = Me, Et or beta-methoxyethyl, An- = a Cl, methosulphate, ZnCl4 or BF4 anion. USE/ADVANTAGE - (I) are claimed for colouring polyacrylonitrile spinning compsns., and (I) and (II) for colouring paper. They are also useful for colouring keratin materials esp. in hair dyes, and (II) are also suitable for colouring polyacrylonitrile. They give red to reddish-blue hues with good fastness to washing and are readily soluble in DMF. The 2-aminothiazole dicarboxylate ester used as starting material for (I) and (II) can be prepd. easily and contain ester gps. which are stable enough to remain intact during dyestuff synthesis. In an example, 23 g. (III) were diazotised with nitrosylsulphuric acid in concn. H2SO4 and coupled with 12.1 g. dimethylaniline. The dyestuff was isolated (yield ca. 45 g.), then methylated and worked up. This gave ca. 47 g. dyestuff, which dyed polyacrylonitrile in reddish-blue hues with good fastness.
Patent DE-4132853-A1 (DE)
Title: Suppression of flicker in pictures from cine camera - involves control of integration of input to video camera by recognition of bright and dark intervals
Inventor: DENZ PETER
IPC: H04N5/217
Filed: 1991-10-02
Abstract: The reflecting screen (1) of a motion picture camera rotates about an axis (2), directing light from the objective lens (3) through a matt plate (11) to a beamsplitter (6) which reflects part (7) into the eyepiece (8) and transmits the remainder (9) to a video camera (10). Bright and dark phases of the rotating mirror are distinguished by a brightness detector (12) as a basis for triggering the integration of light arriving at the video camera (10). ADVANTAGES - Image correction in a wider speed range is possible, missing parts of the image can be restored, and signal/noise ratio is improved.
Patent DE-4135871-A1 (DE)
Title: New quinoxaline derivs.
Inventor: HUTH ANDREAS DR
IPC: C07F9/6509
Filed: 1991-10-26
Abstract: Quinoxaline derivs. of formula (I), and their isomers and salts, are new; R1 = 1-12C alkyl, 2-12C alkenyl, 2-12C alkynyl, 3-7C cycloalkyl 6-12C aryl-(CH2)n or hetaryl-(CH2)n, all opt. substd. by R2; R4 = H or R1; R5-R8 = H, halo, NO2, NR9R19, NHCOR11, SO2R12, 3-7C cycloalkoxy, COR13, CN, CF3, 1-6C alkyl, imidazolyl (opt. substd. by CN, 1-4C alkyl or 1-6C alkoxy-carbonyl) or 1-4C alkoxy; or R5+R6 or R7+R8 is a fused benzene ring; n = 0-5; R2 = COR3 or POXY; gps. can be substd. by one or two R2; R3 = OH, 1-6C alkoxy or NR9R10; X,Y = OH, 1-6C alkoxy, 1-4C alkyl or NR9R10; R9,R10 = H or 1-4C alkyl; or NR9R10 =  a satd. 5-6 membered heterocycle opt. contg. another N, O or S atom; R11 = 1-6C alkyl or phenyl; R12 = H, 1-4C alkyl, NH2 or di(1-4C alkyl)amine; R13 = OH, 1-6C alkoxy, 1-6C alkyl or NR9R10; Provided that (a) when R4-R8 are H, that R1 is not carbamoylmethyl, 1-carboxy-1-phenylmethyl or 1-6C straight chain alkyl (substd. in the 1-position by COOH or 1-6C alkoxy-carbonyl); (b) when R1 is straight chain 1-6C alkyl (substd. in the 1-position by COOH or 1-6C alkoxy-carbonyl), that R4-R8 are not H and (i) R6 and/or R7 or (ii) R6 and R8 are not F, Cl or Br; (c) when R1 is carboxymethyl, that R6 and R7 are not both methyl, R4-R8 are not all H and R6 or R7 are not NO2.
Patent DE-4142970-A1 (DE)
Inventor: RUNTSCH ERHARD
IPC: H01H83/14
Filed: 1991-12-24
Abstract: A residual current device and/or differential-current protection circuit breaker, having a summing current transformer which has a transformer core, a primary winding (which is allocated to said core, is formed by at least one supply conductor and one return conductor of a network which is to be protected, and passes through the transformer core) and a secondary winding, having a trip device which is driven by the signal on the secondary side, which signal is emitted by the secondary winding on the basis of a current difference between the currents in the supply conductor and return conductor, possibly with the interconnection of an amplifier or differential current sensor, and having a latching mechanism which is operated by the trip device and by means of which contact points located in the network conductors are opened, the trip device (20) having an element consisting of electrostrictive material whose one end is clamped in a fixed position and whose other end changes its position on the basis of the signal on the secondary side, and a differential-current sensor (17), containing an amplifier, being provided between the element (20) and the secondary winding (16), via which differential-current sensor (17) the piezo-electric trip device is connected to the network voltage. <IMAGE>
Patent DE-4202512-A1 (DE)
Title: 4,4'-Di:amino:benzhydrol(s) prepn. - by hydrogenation of 4,4'-di:amino:benzophenone(s) in presence of hydrogenation catalyst and acid and/or salt
Inventor: HICKMANN ECKHARD DR
IPC: C07C215/68
Filed: 1992-01-30
Abstract: Prepn. of 4,41-diaminobenzhydrols of formula (I) is effected by reaching 4,41-diaminobenzophenones of formula (II) with H2 at -20 to 100 deg.C/0.5-100 bar in presence of a hydrogenation catalyst and 0-20 mol. equivs. (based on (II)) of an acid and/or salt (e.g. H2SO4, HCl, H3PO4 or NaH sulphate) A = 1,4-phenylene opt. substd. by 1-12C alkyl and/or 1-12C alkoxy' R1 and R2 = H, 1-20C alkyl, 3-8C cycloalkyl, 7-12C aralkyl, aryl (opt. substd. by 1-12C alkyl and/or 1-12C alkoxy), 2-8C omego-hydroxyalkyl, (CH2.CH(R3).O)n CH2.CH(R3)OR4 or 2-7C alkylene (opt. substd. by 1-12C alkyl and opt. interrupted by -O-, -S- or -N(R4)-); R3 = H or Me; R4 = H or 1-20C alkyl; and n = 0-40. Pref. the catalyst is a Pd-contg. catalyst and is used together with 0.001-20 (esp. 0.5-10) mol. equivs. (based on (II)) of an acid. USE/ADVANTAGE - (I) are intermediates for di- and tri-aminotriphenylmethane dyes as well as for inks such as crystal violet lactares, levio-auramines or sulphinates. They are obtd. without the flammability, waste disposal and toxicity problems.
Patent DE-4203603-A1 (DE)
Title: Recrystallisation of amorphous silicon films at low temp. - uses an anneal to reduce the hydrogen and fluorine content before recrystallisation under ion-implantation
Inventor: OYOSHI KEIJI
IPC: H01L21/84
Filed: 1992-02-07
Abstract: Polycrystalline semiconductor film is formed by ion-implantation. The process consists of deposition of an amorphous film using plasma-CVD, anneal of the film to remove absorbed H and/or F and finally recrystallisation using ion implantation. USE/ADVANTAGE - The processes can all be carried out at low temps. The anneal is carried out at 50-800 deg.C., i.e. at a lower temp. than the film deposition. The result of the additional anneal is to allow recrystallisation at lower temps. This allows the use of substrates previously not suitable, i.e. glass is used for Liq Crystal Displays (LCD) and is suitable for mfr. of 3-dimensional integrated app
Patent DE-4208375-A1 (DE)
Title: Fabric stack impact blade cutter - has a sensor handgrip for operation of blade and shrouding through operation contact
Inventor: STEINHAUSER KLAUS
IPC: B26F1/38
Filed: 1992-03-16
Abstract: The impact blade cutter appts., to cut layers of material in a stack on a cutting table and the like, has a blade shrouding which moves up and down to cover the blade. The guide handle, with a switch to operate the blade drive, is a sensor handle (16) so that, when the operative presses it, the blade drive (3) is activated and keeps operating, while it is switched off when there is no contact at the sensor guide handle (16). Pref. contact with the sensor handgrip (16) positions the blade shrouding (8), which is released when there is no contact with the sensor, handgrip (16). A further pressure switch (17) at the handgrip (16) sets the blade shrouding to the height setting, and a further key (18) switches on the blade drive. The blade shrouding (8) is set manually or automatically to the height (h) of the fabric layer stack. The sensor switch handgrip (16) is a capacitative handgrip, with a conductive shaped section as the outer grip surface, coated with a thin insulating layer. The conductive inner section is connected to an evaluation electronic system, integrated within the handgrip. The handgrip can also be structured as an inductive switch handgrip unit. ADVANTAGE - The appts. gives complete protection against accidents and danger to the operative, with easier handling and operation.