baber/WOPTO huggingface dataset:
Patent DE-3933520-A1 (DE)
Title: Frequency-dependent operation of parallel three=phase inverters - involves switching to indirect inverter operation at higher machine frequencies by change of thyristor firing pattern
Inventor: HUSSELS PETER PROF DR ING
IPC: H02P25/024
Filed: 1989-10-05
Abstract: Two indirect inverters (1, 2) are supplied from a three-phase network via a transformer (W), and feed the three stator windings (R, S, T) of an AC machine. Each inverter consists of two rectifying thyristor bridges (e.g. N1, M1) joined by an intermediate circuit choke (L1). Two of the machine line currents are provided by the respective inverters (1, 2). The third line current is formed from the sum of the currents through the machine-side bridges (M1, M2). USE/ADVANTAGE - For direct invertor operation and for switching between direct and indirect operations with allowance for commutation processes in rectifiers.
Patent DE-3938728-A1 (DE)
Title: Window-frame cutting out equipment - uses chain-saw coupled via depth stop and slide to guide rail clamped to frame
Inventor: WEGEWITZ HANS
IPC: E04G23/08
Filed: 1989-11-23
Abstract: The equipment cuts out the frames of old windows or doors using a chainsaw (9). The chainsaw is coupled by a connecting component (8) with a depth stop and a travel slide (7) to a guide rail (5). The rail is joined via a further connecting component (6) to jaws (2,4) holding the frame. The latter component can be adjustable for height, extending either downwards to the bottom part of the jaw (2) or through an angle to the part of it opposite the frame. USE/ADVANTAGE - Rapidly cuts frame away.
Patent DE-3938885-A1 (DE)
Title: Consolidating ash - by using hardenable binder of water glass and aluminium phosphate hardener
Inventor: ASSMANN DORIS
IPC: C04B28/26
Filed: 1989-11-24
Abstract: Consolidation of granular and pulverulent ashes, esp. boiler ashes and salts from flue gas scrubbing in special waste incineration plants, is carried out using a hardenable binder of waterglass with aluminium phosphate hardener. Pref. the hardener is uniformly dispersed in the dry waste, a 25-50 (pref. 30-45)% waterglass soln. is mixed in and then the mixt. is hardened, pref. in moulds. The waste is pref. mixed with at least 10% hardener (based on waste-hardener mixt.), pref. 20-30 (esp. 30)% hardener in the case of boiler ash and pref. more than 20 (esp. 30)% hardener in the case of salts. After addn. of at least 30% waterglass (calculated as solids and based on 100% waste-hardener mixt.), pref. 25-80 (esp. 30-35)% sodium waterglass in the case of boiler ash and pref. 38-45% waterglass in the case of salts, the mixt. is hardened. ADVANTAGE - The product has much improved elutriation resistance and does not require special storage dumps.
Patent DE-3943023-A1 (DE)
Title: Equipment for handling and emptying bins - has bin raised and swivelled on arm guided by track with latch to hold and release arm
Inventor: BERNHARD LORENZ
IPC: B66F9/00
Filed: 1989-12-27
Abstract: Bins on a packaging line frequently have to be lifted off, emptied into another container and then returned to the line. The equipment has a bin carrying arm (3) which can swivel horizontally through 90 deg. about a pivot bracket (9) up and down the pillar (1). Attached to the arm (3) is a pin (4) which is guided in a track (2) on the side of the pillar. The track is twisted through 90 deg. at the upper end (5) so that as the arm is moved upwards it is constrained to turn through 90 deg. At the top of the arm is a vertical guide (7) with a spring loaded latch. The action of the latch is to allow the pin (4) to drop into the lower part of the guide (7) after the arm has been raised. When the bin has been emptied, the arm is lifted and pushed by the latch into track (2) for descent to the packaging line. USE/ADVANTAGE - Simple, reliable design of equipment for handling and emptying bins.
Patent DE-4002488-A1 (DE)
Title: Additional axle for heavy goods vehicle - can be lifted clear of ground by chains driven by hydraulic motor
Inventor: PAUL JOSEF
IPC: B60G11/46
Filed: 1990-01-29
Abstract: The heavy goods vehicle has an additional axle consisting of a beam (1) with a wheel (2) mounted at each end. The axle is attached to the vehicle chassis (5) by pneumatic springs formed by inflatable bellows (4). The axle can be lifted clear of the ground by two chains (8). These chains have their lower ends attached to the beam whilst their upper ends are attached to chain wheels (7). These chain wheels are driven by a hydraulic motor (12) to pull the axle upwards towards the chassis (5). USE - Additional axle for heavy goods vehicle.
Patent DE-4004587-A1 (DE)
Title: Recovery of polystyrene from scrap foam - granulated foam is compressed in several steps in chamber while steam is added
Inventor: MANG JOSEF
IPC: B29B17/00
Filed: 1990-02-15
Abstract: Recovery of polystyrene from polystyrene foam scrap material is reduced to granules which during heating are compressed into blocks. Pressing is performed in several stages such that between each pressure application further granules are added. Equipment for pressing comprises a compression chamber, one wall of which forms a moving piston. Heat can be supplied to the chamber via the walls and is in the form of steam. Pref. the process is performed in a chamber (1), the typical dimensions of which are e.g. 4m long, 50 cm across, 1.25m high. Pelletised polystyrene foam scrap (2), 10-20 cm across is added to the chamber (1) and a piston (3) which is formed by one wall of the chamber (1) compresses the material (2). Pressing is performed stepwise, each step compressing material to approx. 60% of the original depth. Piston (3) is withdrawn between each compression step and further granule are added.  Process is pref. completed within 3-6 press stages. During pressing stem is supplied to the granules (2)  through the sidewalls of the chamber. Temps. within the chamber (1) are 140-160 deg.C and pressure is 100-200 kN/sq.m. When fully compressed and cooled, the polystyrene is removed in a single block for reprocessing. USE/ADVANTAGE - Process is used for large scale, simple recovery of polystyrene from scrap foam.
Patent DE-4004875-A1 (DE)
Title: Lid or closure piece - is for metal drink-canister and has opening closed by plastics flap
Inventor: IPPENDORF WALTER
IPC: B65D17/50
Filed: 1990-02-16
Abstract: The lid, closure piece or such like for a drinks receptacle contains a prepunched cut out sectionm (5) which is opened by a tear off or push in plastics flap (4). The  flap (4) is joined to the lid by a pin or bearing (6) standing vertically on the lid. The flap (4) edge clips into the edge of theh lid (8). The flap has two lengthwise sides (10,11) one of which: fits beneath the lid edge with a stepped piece, and the other side has a stepped part sealing onto the lid edge (9). USE/ADVANTAGE - The esp. metal drinks container  can be reclosed.
Patent DE-4005597-A1 (DE)
Title: Mixture control system for engine - has processor control monitoring dynamic changes to compute optimum fuel input and mixture
Inventor: NISHIYAMA RYOJI
IPC: F02D41/32
Filed: 1990-02-20
Abstract: The engine is fitted with monitors for cylinder pressure (13) crankshaft angle (7) and inlet temperature (17). Other parameters measured include engine temperature, exhaust monitor, battery voltage etc. The processor (15) computes a reference fuel input level from programmed data. The fuel level is modulated by a correction amount which refers the dynamic changes in the engine e.g. when the engine is accelerating or retarding. No airflow monitor is required. The engine pressure is monitored at a set crankshaft angle and the variations in pressure given an indication of the torque changes in the engine. From the basic programmed values in the processor simple correction signals are computed and added to the control.
Patent DE-4005849-A1 (DE)
Inventor: MITOBE KUNIO
IPC: H04R7/20
Filed: 1990-02-23
Abstract: A cone-type speaker includes a diaphragm (10, 11) and a voice coil for receiving an electric sound signal through a wire (K), and a weight portion (W) formed on an edge (11) of the vibration system when the edge is formed. The weight portion serves to balance the weight of the wire, thereby preventing rolling of the vibration system. <IMAGE>
Patent DE-4008814-A1 (DE)
Title: Poster presentation kiosk with illuminated turnstile - comprises basic structure with transparent protective cover, posters being displayed on inside
Inventor: ORTMANNS DIETER
IPC: G09F15/00
Filed: 1990-03-20
Abstract: The kiosk is tubular, stands upright, and comprises a basic body (2) and a roof which protects the advertising surface partly and the inner room of the kiosk completely. The basic body (2) is formed as a transparent protective cover (6), which surrounds a carrier unit (8) which is movable and illuminated for an advertising surface (9) which it supports. The carrier unit (8) has a drive fitted in the floor part (3) of the basic body (2). The protective cover (6) inter-engages with the floor part (3) and roof part (4), leaving ventilation slots in so doing. The carrier unit (8) is formed as a turnstile (10), with three upright plates (12-14), having a rotary axis (11) in both the floor part (3) and the roof (4). USE - For public presentation of advertising posters.
Patent DE-4011863-A1 (DE)
Inventor: WOHLLEBEN WOLFGANG DR
IPC: C12N15/09
Filed: 1990-04-12
Abstract: The kil-kor system from the plasmid pIJ101 can be used for regulated gene expression in streptomyces. For this, the korA protein is either inactivated or eliminated in order to "acquire" a particular gene. <IMAGE>
Patent DE-4012243-A1 (DE)
Title: Cutting and notching device - has leading projections made of porous material impregnated with lubricant, and has reduced friction on operation
IPC: B23D77/02
Filed: 1990-04-14
Abstract: The notching device is equipped with a cutting plate and two leading projections. The special feature of the leading projections is that they are fabricated from a porous material (esp. sintered W) in which the pores are infiltrated with lubricant of either a metal or polymer (esp. Cu or teflon). In this way, a film of lubricant is maintained between the projections and the bored hole wall. USE/ADVANTAGE - Friction is reduced between the leading projections and the working material. Prevents blockage with fused shavings, reduces wear and tear, optimises stand time.
Patent DE-4017877-A1 (DE)
Title: Flow measurement sensor for wall mounted or in-flow use - has functional elements on tubular body mounted in measurement pin or over measurement body
Inventor: HISS ECKART DR
IPC: G01P5/12
Filed: 1990-06-02
Abstract: The flow measurement sensor either mounted in a wall of a flow channel or in the form of a measurement tube in the flow contains functional elements (5,6,9) mounted on a tubular measurement body (3). In the wall mounted case, the body is inserted into the cylindrical part of a measurement pin (2) protruding into the flow and is in thermal contact with the pin's inner wall. In the second case, the body is mounted over the measurement tube and brought into thermal contact with it. USE/ADVANTAGE - E.g. for use in calorimetric flow attenuators. Is simpler and less costly to manufacture than earlier types.
Patent DE-4021001-A1 (DE)
Inventor: WIESNER MATTHIAS DR
IPC: C07H5/02
Filed: 1990-07-02
Abstract: Process for producing acylated glycosyl fluorides by the fluoridation of saccharides which are at least partly O-acylated in non-aqueous hydrogen fluoride in which the corresponding carboxylic acid anhydride is added to the hydrogen fluoride before the reaction and the reaction solution is processed after reaction times of 60 minutes at the longest.
Patent DE-4021986-A1 (DE)
Title: Load transport vehicle with base frame - has remote control moving operator's platform from stowed to horizontal working position
Inventor: MITTERMEIER ALBERT
IPC: B66F9/075
Filed: 1990-07-11
Abstract: The load transport vehicle travelling over a surface (F) comprises a frame (12) with a load support (16), travel drive mechanism and steering gear (18). The latter is so mounted on the frame to allow actuation by an operator walking alongside. An operator's platform (24) on the frame swings on a horizontal axis (22) between the stowed (AM) and a horizontal working position (MM). - When standing on the latter, the operator can reach the steering tiller. A remote control (28), easily reached by the operator, moves the platform from the stowed to the working position.
Patent DE-4035001-A1 (DE)
Inventor: HEITZE GERHARD
IPC: B21B1/02
Filed: 1990-11-03
Abstract: To improve the maintenance and availability of an upsetting press 1 for reducing the width of rolling stock, especially that of slabs, in hot wide strip roughing trains with tool holders 10 which are arranged at both edges of the slab, receive press tools 9 and can be moved with the aid of at least one crank drive 23 in the direction of reduction, the crank drive 23 and a feed drive 12 being arranged in a crank case 6, the crank case 6, the crank drive 23, the feed drive 12 and the tool carrier 10 are combined to form a single constructional unit 24 and this constructional unit 24 can be displaced, in particular by means of a displacement device 27, on a rail arrangement 26, 29 to the side and approximately parallel to the direction of slab movement, through a window 25 of the housing of the horizontal stand 3 of the press. 
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Patent DE-4100822-A1 (DE)
Title: Method of sepg. floating and sinking impurities from waste water - using conical inlet duct to slow down flow and allow thermal and gravitational sepn. to take place before water enters main spiral sedimentation channel
Inventor: WEILER WALTER DIPL ING
IPC: C02F1/40
Filed: 1991-01-14
Abstract: A horizontal sepn. channel, in which the flow velocity is continuously reduced, is provided upstream of the main sedimentation channel of a device for treating waste water from food processing operations. In this sepn. channel, the warm water and floating impurities move upwards while the colder water and heavier impurities move downwards, and these layers of the water flow are guided into the corresp. regions of the main sedimentation channel. The sepn. channel is in the form of a conical pipe section (11), the cone angle for the colder lower flow layer being greater than that for the warmer upper flow layer. These layers may be sepd. from each other by guide vanes. The sedimentation channel takes the form of a body of water which rotates slowly about a vertical axis and into which the water flows tangentially at mid-height and at an equal velocity. The flow velocity in this channel is adjusted so that sufficient time is provided for the warm water to rise to the upper surface and the colder water to fall to the lower surface. USE/ADVANTAGE - Used for sepg. floating and sinking impurities from waste water from food processing or prepn. operations. The degree of sepn. of both floating and sinking impurities is greatly improved without the need for additional equipment.
Patent DE-4101635-A1 (DE)
Title: Writing implement with exchangeable cartridge - which has moving mechanism with arrester and spring affecting arrester action
Inventor: SEISSLER MICHAEL
IPC: B43K24/03
Filed: 1991-01-21
Abstract: The implement is for use with an exchangeable cartridge (2) with a writing tip (1). The cartridge is movable inside a casing (3), between a rest position and a writing position, in which it is fixed by an arrester (4). The cartridge has a mass element (5) to increase its inertia, and a main spring (6) which applies a force to the cartridge in the direction of the arrester. An auxiliary spring (7) acts on the arrester facing the cartridge. No part for moving the cartridge w.r.t. the casing, is located outside the latter.
Patent DE-4106684-A1 (DE)
Title: Forced draught cooler for accessories of vehicle combustion engine - distributes external air through temp. monitored electrical accessories and exhaust manifold to e.g. exhaust gas afterburner
Inventor: NIEMANN ALOIS DIPL ING
IPC: F01P5/02
Filed: 1991-03-02
Abstract: Atmos. air (3) is sucked e.g. by an exhaust sec. pump (1) into a pipe (2) which is divided downstream into e.g. three branches (4-6) serving the electric current generator (7), central electronic unit (8) and exhaust manifold (9). The flows are controlled individually by e.g. sliding valves (14-16) operated (18) from a control unit (17) governing the pump (1), in response to measurements of temp. (T) and pressure (P) in the exhaust manifold (9), and of temps. only of the other accessories (7,8) being cooled. ADVANTAGE - Common cooling air supply is distributed among various accessories in accordance with their individual operating conditions and needs.
Patent DE-4108238-A1 (DE)
Title: Weft accumulator and forwarding device - has sensors to gradually reduce the winding speed to zero, reducing wear and inertia problems
IPC: B65H51/22
Filed: 1991-03-14
Abstract: A thread accumulator and forwarding device utilises a barrel on which to wind the thread. Sensors are aligned so that the speed of wind-on is controlled. A curved arm protruding through the surface of the barrel is depressed by the windings, to reduce the speed of winding in direct proportion to the amt. of thread wound. The thread is laid onto the accumulator barrel (1) from a feed tube (3). As it does so, the increased amount of thread depresses the arm (4), which is hinged inside the barrel (7). The straight arm (4) reaches through the slot in the barrel at an angle, and at the end of the arm, it is curved down. At this point, the arm supports a magnetic sensor (6).  The arm (4) falls by gravity, but a spring is also fitted to return it to position, or the arm may be made of spring material for this purpose. It is rounded to present a smooth surface to the thread. ADVANTAGE - Erradicates the start and stop principle previously employed, causing excess wear, and involving inertia problems. The sloughing off performance is also improved.
Patent DE-4110005-A1 (DE)
Title: Composite body used for cutting tools - coated with fine crystalline alpha-aluminium oxide to improve adhesion, wear and corrosion resistance
Inventor: KOENIG UDO DR RER NAT
IPC: C23C16/40
Filed: 1991-03-27
Abstract: Composite body made of substrate of steel or Ni-W Co-based alloy with one or more protective layer, one of which is alpha - Al2O3, in which the alpha - Al2O3 is produced in a fine crystalline form confined by measuring the half value of an interference line produced by irradiating the coating with Cu-K (alpha) x-ray. The half value width is at least three times the width of a powder formed body. USE/ADVANTAGE - In coatings for cutting tools, high temp. material esp. for firing chambers or as wear resistance material for parts which rub together such as cam shafts. Coating has improved adhesion, wear and corrosion resistance properties, esp. at high temps
Patent DE-4114613-A1 (DE)
Inventor: SCHOENEWOLF GEORG DR
IPC: C21C7/10
Filed: 1991-05-02
Abstract: The invention relates to plant for the secondary metallurgical treatment of molten steel, which is arranged within a production chain consisting of a melting device, such as an electric furnace or converter, and a casting device, in particular a continuous casting device. A solution is to be found which, at the lowest possible cost, ensures a high degree of flexibility and an adaptation of the VOD transformation time to the cycle times of the upstream and/or downstream melting and casting devices. For this purpose, the plant is designed with two stands for in each case one vessel (1, 1') which can be evacuated and contains a steel melt, which contain devices (6, 6') for feeding oxygen and devices (7, 7') for adding additives to the melt, and with pipes (3) which connect the vessels (1, 1') to a device for generating a vacuum, a device consisting of a water ring pump station (5') for generating a moderate vacuum and a device (4, 5) consisting of water ring pumps (4) and steam ejectors (5) for generating a deep vacuum being provided, and the vessels being selectively connectable only to the device for generating a moderate vacuum (5') or to the device for generating a deep vacuum (4, 5). 
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Patent DE-4119918-A1 (DE)
Title: Fast dram construction with improved capacitor size - uses polycide bit-lines and diffusion contacts and capacitor stack overlying word-line
Inventor: SHIMIZU MASAHIRO
IPC: H01L27/10
Filed: 1991-06-17
Abstract: The access trnasistor of the DRAM features polycide contacts (7, 8) to the diffused areas (3, 4), a polysi gate electrode which overlaps the diffusion areas and a capacitor stack (20, 21, 22) which overlies the gate electrode (14) and contacts the source conductor (7). The polycide contacts (7, 8) are partly placed on the adjacent field-oxide (2). A process to mfr. the construction is also claimed. USE/ADVANTAGE - The design results in a larger gate electrode area, which reduces the series resistance of the gate electrode. It also provides easy contacts to the diffused areas and to the gate, avoiding large aspect ratio contact windows. The use of polycide reduces the series resistance of the contacts and allows a high speed operation of the device. The overlap of the capacitor electrodes allows the use of a large capacitance value for each storage cell. The construction reduces the demands on the accuracy of the photo resist process.
Patent DE-4133723-A1 (DE)
Inventor: LEUTNER WILFRIED
IPC: H02K21/16
Filed: 1991-10-11
Abstract: A rotary field motor comprises a relatively coarsely toothed stator (1) in which is located a rotor (4), to the casing surface of which are fitted individual permanent magnets (5, 6). The special feature of the rotor (4) is that the permanent magnets (5, 6) are not equally spaced apart on the casing surface of the rotor (4), and therefore the stop moments of the individual permanent magnets (5a-5b, 6a-6d) largely compensate one another.
Patent DE-4136767-A1 (DE)
Title: New 3-hydroxy -4-(1-oxo-alk-1-yl) -phenoxy:acetic acid derivs. - are lipoxygenase inhibitors, effective as anti-asthmatic, antiphlogistic or antiallergy agents
Inventor: BEGER JOERG PROF DR
IPC: C07C59/90
Filed: 1991-11-08
Abstract: 3-Hydroxy-4-(1-oxo esp. 1-oximinoalk-l-yl)-phenoxyacetic acid derivs. of formula (I) their esters and amides are new. Where R = H, alkyl or aralkyl; X = O or NOH; Y = OH, OAlk, N(CH2)n or N(CH2)4O; n = 4 or 5; excluding cpds. where R = C6H13; X = NOH and Y = OH; and R = CH3; X = O and Y = OH. USE/ADVANTAGE - (I) inhibit lipoxygenase enzymes and are antiasthmatic, antiallergic and antiphlogistic agents. 21 cpds. e.g. 3-hydroxy-4-(1'-oxoethyl)phenoxyacetic acid, (Ia) 3-hydroxy-4-(1'-oximinodec-l-yl) phenoxyaceticacid morpholide; and 3-hydroxy-4-(1'-oxodec-1-yl) phenoxyaceticacid morpholide are specifically claimed.
Patent DE-4137242-A1 (DE)
Title: Spiral formed collimator for screening or X=ray radiation - having easy construction and giving improved spatial and angular resolution
Inventor: HARDING GEOFFREY DR
IPC: G21K1/02
Filed: 1991-11-13
Abstract: A collimator (5) for screening X-ray radiation consists of a spiral steel plate arranged concentrically around an axis (7) between the sample (8) and detector, so that the steel plate forms a series of shells in a plane perpendicular to the axis. The collimator is arranged on the other side of the test region (8) and prior to that an X-ray source with slits for production of a pencil-beam. The collimator (5) is easily mfd. by rolling an X-ray absorber sheet around a former (52) whose outer diameter corresponds to the inner dia. of the spiral and then further rolling the plate around spacers (54). ADVANTAGE - In comparison with current collimators, the discovery has a smaller distance between the walls (or windings) and that for the same detector geometry; this leads to improved spatial resoluton and a reduction in the capture of scattered radiation.