baber/WOPTO huggingface dataset:
Patent DE-3842692-A1 (DE)
Inventor: JAKOBSON GERALD DIPL CHEM DR
IPC: C07C41/42
Filed: 1988-12-19
Abstract: The invention relates to a process for the preparation of polyglycerols (with more than 50% by weight of diglycerol) which are low in cyclic components, by reacting glycerol with chlorohydrins. In this reaction, glycerol is reacted with epichlorohydrin (instead of chlorohydrin) at temperatures from 20 DEG  to 120 DEG  C. and at certain mole ratios of glycerol to epichlorohydrin and in the presence of an acidic catalyst and the reaction mixture obtained, which has not been separated into its components, is reacted at a temperature from 50 DEG  C. to 120 DEG  C. according to the content of organically bound chlorine in the reaction mixture, with an alkaline-reacting, preferably aqueous solution. After the addition of water, the reaction mixture is desalinated via one or more cation and subsequent anion exchangers, dehydrated by distillation and the glycerol-polyglycerol mixture obtained is separated by fractional distillation into glycerol, diglycerol and higher polyglycerols.
Patent DE-3865006-A1 (DE)
Title: Injection syringe
IPC: A61M5/178
Filed: 1988-02-16
Abstract: An injection syringe for medicinal purposes has two chambers, in the cylinder, one for dry and the other for a fluid substance. They are joined when the free piston is pushed into the bypass zone. The rear plate has a female thread and the piston rod has over a distance a male thread. The length of the latter is designed to be clear of the female thread when the piston has reached the bypass.
Patent DE-3910271-A1 (DE)
Inventor: SCHOLL GERHARD
IPC: F23C10/24
Filed: 1989-03-30
Abstract: PCT No. PCT/DE90/00254 Sec. 371 Date Dec. 12, 1990 Sec. 102(e) Date Dec. 12, 1990 PCT Filed Mar. 30, 1990 PCT Pub. No. WO90/12246 PCT Pub. Date Oct. 18, 1990.Some part (a) of the bed material is withdrawn continuously (9e, 10) from the lower region of the fluidized bed (20), cooled (11), screened (12, 13) on a belt (a') to obtain a particle size specific to the fluidized bed, and then recycled to the fluidized bed (15, 18).
Patent DE-3911585-A1 (DE)
Title: Contactless opto-electronic angle measurement arrangement - uses grey or colour filter, mirror on object and linear or angular filter density variation
Inventor: WEISS RUPERT DIPL ING
IPC: G01D5/30
Filed: 1989-04-08
Abstract: An image of a small section of a grey or colour filter is formed on an optoelectronic detector via a lens and a mirror mounted on the measurement object. This ensures a definite mathematical relationship between the light passed by the filter and incident on the detector and the filter section position. Planar and non-planar angles can be measured using a filter with optical density varying with the length coordinate and radial symmetrical density respectively. USE/ADVANTAGE - For contactless, optoelectronic measurement of planar and non-planar angles. Simpler, cheaper measurement is achieved, esp. for control, measurement and regulation applications.
Patent DE-3914937-A1 (DE)
Title: Back foaming tool - with upper and lower mould, hinged in gate and sealing facilities
Inventor: ZEBREK ANTON
IPC: B29C33/00
Filed: 1989-05-06
Abstract: A backfilling tool for injecting foam for dashboards and other interior fitments in motor cars applies polyurethane foam between a backing plate and a front lining of acrylonitrile butadiene foil, styrene polyvinyl chloride (PVC) or leather. It has an in-gate on a hinged arm with a sealing arm, leading to the recess and matching the opening of the in-gate. A funnel assists the pouring. The mould consists of the bottom part and an upper part which matches the backing plate. A closure is used to shut the funnel. ADVANTAGE - This prevents any leakage of foam across the joint between in-gate and backing plate and front lining.
Patent DE-3918100-A1 (DE)
Inventor: HERRMANN FRANK DIPL ING
IPC: H01F27/42
Filed: 1989-06-02
Abstract: In order to provide a current transformer with increased precision, in which a comparator converter (11; 22) and a power converter (13; 24) are located in series with their primary windings (10, 12; 21, 13) in a main circuit, in which a compensation current of a winding (16; 36) of the comparator converter (11; 22) is supplied from a secondary winding (17; 18) of the power converter (13; 24) in order to reduce the magnetisation of the core of the comparator converter (11; 22), and in which an indicator winding (19; 36) of the comparator converter (11; 22) emits a difference signal corresponding to the remaining magnetic flux, which signal is amplified (at 20; 37) and is supplied as a difference current of another winding (16; 38) of the comparator converter (11; 22), the sum of the compensation current (I1; I3) and of the difference current (I2; I4) forming the output signal, such that a high precision can be achieved both in the case of alternating current as well as in the case of pulsating direct current, with a cost-effective design, it is proposed that the power converter (24) also transmits a component, corresponding to the direct current component of the main current (Ih), in the first compensation current (I3). <IMAGE>
Patent DE-3918812-A1 (DE)
Title: Distance-measuring heterodyne interferometer
IPC: G01B9/02
Filed: 1989-06-09
Abstract: A heterodyne distance-measuring interferometer having at least two diode lasers is described, the frequencies of which are mixed and caused to interfere by an integrated optical circuit. As a result, beat frequencies of different magnitude or a variable beat frequency can be generated by interference modulation. The fundamental or initial frequency is coupled out separately into an interferometric measuring section which extends in the ambient air and is stable, e.g. coupling into an air-Fabry-Pérot interferometer with a constant mirror separation (spacing). It is possible in this way to stabilise the wavelength, so that the fundamental frequency is connected to a defined length. After the interferometric mixing, the intensity of this radiation is divided and guided, on the one hand, onto a reference detector and, on the other hand, via the measuring section onto a measurement detector, the two of which are connected to one another in such a way that it is possible to measure their phase angle relative to one another and to the initial position of the instrument. Owing to this design, two frequencies can be mixed and modulated by interference in a simple way. An optical distance meter of high accuracy can be implemented in this way.
Patent DE-3921489-A1 (DE)
Title: Image transmitting optical fibre - with many conductive cores embedded in powder and fused in position, all of specified material
Inventor: STIEB WERNER
IPC: C03C13/04
Filed: 1989-06-30
Abstract: Optical fibres with a good flexibility for the  transmission of pictures are made from many light conducting cores, each surrounded by a shell with a lower optical refractive index.  A number of glass rods of larger diameter than that of the final bores is placed in a glass tube and the voids are filled with a powder of lower refractive index than the rods. The thus filled tube is sintered by heat: input to a parison and is finally drawn to an endless optical fibre by heat input and by a pulling machine. The optical fibre (1) includes many light conducting cores (4) which transmit a picture without distortion from one end face (2) to another. Thee preferred material for the glass rods is Ge-doped SiO2 and for the powder undoped SiO2 or undoped SiO2 for the rods and F-doped SiO2 for the powder. ADVANTAGE - This is a simple process of producing optical fibre with a very high resolving power.
Patent DE-3924840-A1 (DE)
Title: Driving mechanism for carriage of overhead crane - utilises deflection of load support struts to engage driving roller
Inventor: JAKSZTAT KLAUS
IPC: B66C9/14
Filed: 1989-07-27
Abstract: The overhead crane has a carriage which is operated either manually or by means of a motor. The carriage has four rollers (2) which run on the lower flanges of the supporting beam (1). Each end of each roller spindle is enclosed in a bush (3)  which is welded to a strut (10) with each strut (10) having its lower end welded to a cross-beam (11) which is positioned below the rail (1). The load (Q) is suspended from the cross-beam (11) and causes the struts (10) to bend so that they exert a force on the bushes (3) which presses the rollers (2) against the driving roller (7) which drives the rollers (2) by friction. USE - Overhead cranes.
Patent DE-3924963-A1 (DE)
Title: Controlling piezo elements in ink printer - applying transient polarisation voltage via microprocessor control and resistance network before applying bias voltage
Inventor: WEHL WOLFGANG DR
IPC: B41J2/015
Filed: 1989-07-27
Abstract: A control circuit is assigned to each piezo-element switching it into working state via a coupling capacitor. In the working state each piezo-element is directly switched to a bias voltage via a resistance network. Each time the printer is switched on at the mains a momentary polarisation voltage(UP) is applied to each piezo-element(CP) via a control process of the microcomputer via the resistance network(R1,R2,RA) from a refresh unit(RE). Only after this polarisation voltage has been switched off is the bias voltage(UO) applied. USE/ADVANTAGE - Computer-controlled ink printer. Economical  yet effective depolarisation of ceramics (piezo-elements) increasing efficiency.
Patent DE-3925282-A1 (DE)
Title: Connecting rod with loop band - has swivel tension device for band with sleeve to compensate for tension variations
Inventor: RATHJE VOLKER DIPL ING
IPC: F16C7/02
Filed: 1989-07-31
Abstract: The installed connecting rod has a substantially pressure-biased shaft extending between a piston bolt eye and a lift pin eye whilst at least one tensioned loop belt embraces the shaft and the side of the lift pin eye.  A tensioning device has a tension bridge on the side of the loop belt and this bridge (10) is mounted to swivel across the axis (22) of the connecting rod. The length-adjustable expanding device (13) which has an adjustment thread and extends between the tension bridge (10) and a bearing face on the lift pin eye is mounted coaxial with the longitudinal axis (22) of the connecting rod and has a convex bearing face (18). USE/ADVANTAGE - Connecting rod for piston engine.  The predetermined tension can be adjusted in both longitudinal branches of the loop belt through a single screwing process.
Patent DE-3925415-A1 (DE)
Title: Arrangement of floats and sails for amphibious vehicle - is built around roof rack which carries devices for storage and deployment of sails and rudder
Inventor: BAUER ALFRED
IPC: B60F3/00
Filed: 1989-08-01
Abstract: An attachment to a land vehicle includes buoyancy aids (24) retractable from a deployed position and a roof element (12) fixed to both of them with respective telescopic expanders (16). On the roof element (12) a mast (76) and two booms (74,78) are carried for spreading the sails. Beneath the roof element, electric drives (38) for the telescopic expanders (16) are installed with a hoist (98) and spring (100) for raising and stowing the rudder (68) when the vehicle is out of water. ADVANTAGE - Long journeys can be undertaken by land and water without recourse to trailer or waterside moorrings.
Patent DE-3933912-A1 (DE)
Title: Detecting width and twist angle for rolling round cross=sections - using horizontal and vertical dia. measurement systems and pyrometer
Inventor: HOPPE GEB SCHMOLDT KERSTIN DIP
IPC: B21B38/04
Filed: 1989-10-11
Abstract: The temp. variation over the periphery of the rolled material is detected simultaneously with the angle of twist during the manufacturing process. The method involves the use of two dia. measurement devices, i.e., a horizontal (4) and a vertic:l (5) system, and a pyrometer (6) arranged around the rolled material (1). The dia. measurement arrangments and the pyrometer can be mounted on a measurement head which is oscillated or rotated. The pyrometer is mounted at a fixed angle to the measurement head. USE/ADVANTAGE - For independently measuring width and twist angle during rolling of material and reducing energy and material costs.
Patent DE-3934099-A1 (DE)
Title: New 3-amino oxy propanoic acid derivs. - and isoxazolinium salts area desiccants, defoliants and weed killers
Inventor: ELBE HANS-LUDWIG DR
IPC: A01N37/36
Filed: 1989-10-12
Abstract: Pivalic acid derivs of formula (I) are new. In (I), X = 0 or S; R1 = H or alkyl; and AR = opt substd phenyl or opt substd naphthyl. More specifically, R1 = H or 1-6C alkyl; AR = phenyl opt substd by 1-3 of halo, CN, N02, 1-6C alkyl, 1-6C alkoxy, 1-6C alkylthio, 1-6C haloalkyl, 1-6C haloalkoxy, 1-6C haloalkylthio (each contg up to 13 halo atoms), NR2R3 or NR2(C0R4); R2 = H or 1-6C alkyl; R3 = H, 1-6C alkyl, 1-6C alkoxy or phenyl or benzyl opt substd by one or more halo; and R4 = 1-6C alkyl or 1-6C alkoxy (both opt substd by up to 13 halo atoms); 3-6C cycloalkyl opt substd by halo, alkyl or haloalkyl; benzyl or phenyl opt substd by halo. USE - (I) and (II) may be used as defoliants, dessicants and weed killers. They may be used in combination with other herbicides.
Patent DE-3934157-A1 (DE)
Title: Hotplate with elements switched according to pan size - exploits effect on capacitance ratios among concentric sensing rings when large or small vessel is imposed
Inventor: MAGORI VALENTIN DIPL PHYS
IPC: H05B3/74
Filed: 1989-10-12
Abstract: Spiral heating elements (2) are laid in concentric circular zones (3,4) under a glass-ceramic cover plate (7), and  insulated (6) within their metallic housing (5). Capacitive rings (A,B,C) of different radii are charged by the electric field from a low-power HF generator (10). The dia. of a cooking vessel placed on the cover plate (7) affects the ratios of the capacitances, which are measured by an electronic circuit (8) with connections (9) to the elements (2). ADVANTAGE - Heating elements are switched to suit size of imposed cooking vessel whether it be mfd. of iron, steel, ceramic or glass.
Patent DE-4007187-A1 (DE)
Inventor: TOBITA YOUICHI
IPC: H01L21/66
Filed: 1990-03-07
Abstract: A substrate voltage generating circuit is provided on a semiconductor substrate, and the substrate voltage generating circuit generates a voltage to be applied to the semiconductor substrate. A value of the voltage generated by the substrate voltage generating circuit is changed corresponding to a switching of an operational mode of a semiconductor integrated circuit device from a normal mode to a test mode. Thus, operational characteristics of the semiconductor integrated circuit device in a test mode is changed, so that defective products can be detected in a simple short time test.
Patent DE-4007492-A1 (DE)
Title: Pressure filter
Inventor: SCHOTTEN ALFONS DIPL ING
IPC: B01D29/11
Filed: 1990-03-09
Abstract: A pressure filter having a housing in the form of a casing with interior arranged hydraulically operable and slidable pressure piston, and inner non-cylindrical filter and an outer filter casing, whereby the casing housing, pressure piston and non-cylindrical filter are arranged coaxially relative to one another. Further including  discharge lines for the filtrate as well as a closable opening for the removal of filter cakes, whereby the non-cylindrical filter is stationary and the filter casing only or together with a guide tube having a cylindrical configuration are axially displaceable. The filter casing reduces conically in size in the direction of the pressure piston.
Patent DE-4014862-A1 (DE)
Title: Mfg. high ohmic working resistance - applying two oxide layers to substrate with intermediate poly:silicon layer
Inventor: HEE KOO YOON
IPC: H01L21/8244
Filed: 1990-05-09
Abstract: The working resistance for a static RAM, is made using a semiconductor substrate (1) with an applied insulating oxide layer (2), carrying a polysilicon layer (3), which is etched to form two spaced terminal tags. A second oxide layer (4) overlies the  terminal tags and the first oxide layer and is etched so that it provides a continuous path ebtween the 2 polysilicon contact surfaces (3A,3B). The second oxide layer has a side face in contact with both the terminal tags and the first insulating oxide layer. ADVANTAGE - Allows resistance values in T-ohm range.
Patent DE-4015283-A1 (DE)
Title: Synchronising frame structure in sync. digital hierarchy
Inventor: TURBAN KARL-ALBERT DIPL ING
IPC: H04J3/06
Filed: 1990-05-12
Abstract: After recognition of the frame sync. word, its recognition unit (FRAME) is switched (S2) to a byte boundary corrector (ALIG) to which readers (SOH, POH) are connected for an indicator at a predetermined distance from the frame sync. word.The path overhead reader (POH) is switched (S) to a cell header decoder (CELL) which in turn is switched (S3) to the output line (AL). The incoming bit sequence is examined for regular cell headers and transferred in either frame or cell sync. mode.
Patent DE-4019298-A1 (DE)
Title: Electric pocket torch with chargeable current source - has current source casing with terminal contacts for charging, coacting with counter-contacts
Inventor: WITTE WALDEMAR
IPC: F21L2/00
Filed: 1990-06-16
Abstract: In the torch housing is fitted at least one rechargeable current source and a charger section with electric connecting terminals. The miniature torch (28) contains the rechargeable current source (30) connectable via contacts (36, 52) to countercontacts (40, 50) of the torch for the current source recharging. Pref. both torches are releasably interconnected. The miniature torch can be completely retained in the pocket torch housing (10). The miniature torch is typically accommodated in the pocket torch housing recess (20) at the side away from the bulb and reflector (12) supporting front end. ADVANTAGE - Combination of increased power and reduced size by incorporating miniature torch.
Patent DE-4020610-A1 (DE)
Title: Registering alarm signal for collision protection in motor vehicle - using inertial sensor to activate warning system for following vehicles by flashing rear lights
Inventor: SCHREIBER HANS DR DR
IPC: B60R21/01
Filed: 1990-06-28
Abstract: A simple form of protection circuit has an inertial sensor (5) operating a flasher circuit (2) for the rear flashers when a set retardation is exceeded. This provides additional indication to the following vehicles, to the normal brake lights. A more sophisticated system has a rear mounted transmitter (7,8) to send warning signals to be picked up by front mounted receivers (10,11) which activate on board warnings. The inertial sensor can be a piezo-electric crystal or a mechanical sensor. The on-board warning systems include acoustic devices (12) and light flashers (13). The spread of the transmitted warning signal can be wide enough to be picked up by several following vehicles. ADVANTAGE - Reduces risk of multiple collisions; simple fitting.
Patent DE-4020981-A1 (DE)
Title: Clamping workpiece from one side - involves serrated bush segments expanded into workpiece clamping hole by hydraulically actuated drawbar
Inventor: CIANCI PASQUALE DIPL ING
IPC: B25B5/08
Filed: 1990-07-02
Abstract: The workpiece is provided with suitable holes into which the drawbar end (12) and clamping bush (6) can be inserted. The end of the drawbar is shaped like an inverted square pyramid. The clamping bush (6) consists of four separate segments (5) with inner faces matching the tapes of the drawbar. When the drawbar (11) is pulled downwards by a hydraulic piston (15) the segments are formed outwards. Teeth (21) on the segments grip the wall of the workpiece clamping hole (4) and pull the workpiece hard onto the bearing surface (2) of the clamp. USE/ADVANTAGE - Five sides of the workpiece can be reached in one clamping. High cutting forces can be sustained. Workpiece clamping holes do not require close tolerance. Clamping elements are not subject to heavy wear.
Patent DE-4021168-A1 (DE)
Title: Locking element preventing key removal from vehicle steering lock - is fitted to pivoting bridge piece, that has support surfaces for blocking devices associated with both automatic and manual gearbox
Inventor: VEHRKE HEINZ
IPC: B60R25/021
Filed: 1990-07-03
Abstract: Key removal from a vehicle steering lock is prevented by a locking element (5), meshing with the lock barrel (2).  A bridge piece (7), to which the locking element is fitted, pivots the latter from its locked to a key release position.  Support surfaces (13,17,18) are provided on the bridge piece for a blocking button and a blocking element connected to an automatic gearbox selection lever. Either or both of these blocking devices, which allow or prevent pivoting of the bridge piece, may be incorporated. USE/ADVANTAGE - Vehicle steering lock with key removal prevention system is suitable for  both automatic and manual gearboxed vehicles.
Patent DE-4022681-A1 (DE)
Title: Fast acting diverter value for fibre conveying - has built in compressed air store in actuating cylinder to give rapid movement and avoid blockage
Inventor: HERGETH HUBERT
IPC: B65G53/56
Filed: 1990-07-17
Abstract: A diverter valve for airstreams conveying fibres has a valve flap (4) constructed as a solid body. It is actuated by a pneumatic cylinder (6) which in at least one of its end positions retains a store (8) of compressed air. The flap is pref. 60-100mm thick and has an edge radius of 30-70mm. Pref. the storage space in the cylinder is at least 10% of the vol. swept by the piston in its full stroke. USE/ADVANTAGE - The invention gives a quick action valve with smooth passages and so avoids fibre blockages.
Patent DE-4026198-A1 (DE)
IPC: B05C5/00
Filed: 1990-08-18
Abstract: In a liquid-application unit operating according to the refilling principle, the liquid which is to be fed via hoses is to be distributed uniformly over the working width. This took place previously by means of a reservoir space which is advantageously formed from a conically increasing retaining space, out of which the liquid runs onto the material web via an overflow edge and a guide surface. However, it is also essential with this low-volume liquid retaining space that the liquid be supplied uniformly over the working width, in particular when changing colour. In order to achieve this, individual liquid distribution spaces which extend one directly next to the other over the working width are defined in which uniformity is achieved by means of a forced distribution of the liquid from a feed opening to a number of outflow openings. This forced distribution takes place similarly to the structure of a family tree, namely in steps from one opening to two, four, eight, sixteen outflow openings and so on. 
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Patent DE-4032976-A1 (DE)
Title: Top loading household washing machine - has housing lid with two open flat pockets accommodating hinge shaft arms
Inventor: WILDUNG WILFRIED DIPL ING
IPC: D06F37/28
Filed: 1990-10-17
Abstract: Machine incorporates a housing lid featuring two open flat pockets which are located on one of the lid sides as far as possible from each other. The pockets receive hinge shaft arms which stand across the hinge axis. The arms are inserted into precisely fitting hinge frames and are pushed, together with the frames, into the pockets surrounding the hinge frames closely. The hinge shaft is mounted directly next to the associated hinge frame on a bearing block fixed to the housing. The bearing block also accommodates the angled end of the other relevant hinge shaft. ADVANTAGE - The hinges are made less conspicuous to give the underside of the lid a pleasant appearance. The hinges are protected well from dirt and corrosion.