baber/WOPTO huggingface dataset:
Patent DE-4024767-A1 (DE)
Title: Alkali-resistant inorganic reinforcing fibres for composites - prepd. by coating glass or mineral fibre with A-stage phenol]-formaldehyde resin made by reaction in presence of metal oxide or acetate
Inventor: MASTHOFF ROLF PROF DR SC NAT
IPC: C03C25/1025
Filed: 1990-08-02
Abstract: A process is claimed for the prodn. of alkali-resistant inorganic reinforcing fibres (I) for composites, by  applying a coating of A-stage PF resin (II); the novelty is that 0.001-0.1 mol. ortho-directing catalyst, namely oxide and/or acetate of Mg,Zn or Ca, is added to the mixt. of  phenol and formaldehyde, then the mixt. is condensed at 333-373K, and the fibre is coated with 0.8-5 wt.% of the condensate, which is then cured for 20-150 mins. at 393-453K. Composite material consists of silicate building material as binder and 0.2-20 wt.% (I) coated with fully-cured, OH ion-free (II) as above. Condensation prod. is mixed with 0.1-1.0 wt.% coupling agent, esp. aminopropyl-triethoxysilane and/or glycidoxypropyltriethoxysilane and/or technical silane, and 0.1-1.0 wt.% cationic wetting agent; fibre is C-glass, E-glass or AR-glass fibre, mineral slag fibre or rock fibre, in the form of fibre strand, staple fibre or textile, or as chopped fibre. USE/ADVANTAGE - (I) are useful for the prodn. of fibre cement and fibre concrete, and for gas concrete, porous concrete, polymer concrete, plaster components, bitumen composites etc. Process modifies the surface of (I) so that they can be incorporated into alkaline binders to give composites with permanently high levels of mechanical properties.
Patent DE-4028598-A1 (DE)
Title: Tubular heat exchanger -  has expansion joint in each straight tube between plates
Inventor: BLUSCH GUENTER
IPC: F28D7/16
Filed: 1990-09-08
Abstract: The tube-bundle-type heat-exchanger is for use under hgigh gas temp. and casing pressure.  It has thin plates at the gas inlet and outlet ends, accommodating exchanger tubes and tie bolts between the paltes on alternating pitch circles. The tubes (5) run striaght between the plates (6,7) and each contain an expansion joint (13). These can be at one end plate, or at alternate ones, and they can have unions by which tehy are fixed to the plates. ADVANTAGE - Simplicity, and even rate of heat-transfer.
Patent DE-4038829-A1 (DE)
Inventor: SWARS HELMUT
IPC: F02B77/08
Filed: 1990-12-05
Abstract: The invention concerns a method of determining the location of the reaction zone (1) in the interior (3) of a catalytic converter (2) through which a fluid flows which contains components which can react by an exothermic catalysed reaction. The reaction zone (1) is defined as the part of the interior (3) in which the reaction mainly takes place. Its location is determined by measuring the temperature distribution over a measurement path (6) on a wall (5) of the catalytic converter, which extends approximately parallel to the direction of flow (4) of the fluid. The reaction zone (1) is given by the section of the measurement path (6) in which the temperature differs from the maximum value along the measurement path by less than a predetermined amount. The invention represents a particularly simple way of obtaining information on the ageing or poisoning of a catalyst which in normal use does not yet exhibit any perceptible deterioration in performance.
Patent DE-4039410-A1 (DE)
Title: Shock wave generator for generating focussed shock waves - has acoustic lens between pressure pulse source and reflector surface enabling rapid focus zone displacement
Inventor: HASSLER DIETRICH DIPL ING
IPC: G10K11/30
Filed: 1990-12-10
Abstract: The shock wave generator contains a pressure pulse source (8), a reflector (9) and an acoustic propagation medium filling the space between the pressure pulse source and reflector.  The pulses are reflected to coincide in a focus zone (F1,F2). At least one acoustic lens (18) placed between the pulse source and reflector surface is shaped to cause a displacement of the focus zone with respect to the pulse source. USE/ADVANTAGE - For generating focussed shock waves.  Enables focus zone to be displaced rapidly and simply.
Patent DE-4042370-A1 (DE)
Title: Piston-cylinder unit for moving sliding plate in casting ladle - rotates about an axis in the slot of support plates which have slide ramps to facilitate mounting and dismounting
Inventor: LOTHMANN JOSEF
IPC: B22D41/38
Filed: 1990-02-26
Abstract: Closure device for the tapping hole of a casting ladle includes a closure plate which is opened and closed by sliding in a horizontal plane beneath opening via a piston unit which is connected to the plate by an intermediate part. The unit is connected to the part by coupling members and can be rotated about axis by piston when the side bolts are located in slots of side support plates whic include slide ramps to enable bolts to move away from or towards the slots.
Patent DE-4100596-A1 (DE)
Title: Pulverised coal burner - has primary passage with baffle forming part of distributor connected to central and annular passages
Inventor: STROEER KURT DIPL ING
IPC: F23D1/00
Filed: 1991-01-08
Abstract: The pulverised-coal burner incorporates primary and secondary passages. The primary passage forms part, via a baffle(7), of a distributor connected to central and annular passages(10,8). The central passages contain a jet pipe(13) connected to the secondary passage, and the annular one a swirl-inducing system(9). ADVANTAGE - Simplicity, and low nitrous-oxide emission.
Patent DE-4111498-A1 (DE)
Title: Locking positioner device for palettes - has U=shaped positioner with guide unit, and palette guide journals in positioner side tops
Inventor: SCHUSTER HELMUT
IPC: B65G17/00
Filed: 1991-04-09
Abstract: The device is for use with palettes, which are transported on a conveyor mounted on supports. A U-shaped positioner device (2) consists of a horizontal base (5), with vertical sides (6,7), to accommodate the conveyor (3). The guide unit (4) is fastened to the conveyor in its longitudinal direction, for movable support in longitudinal direction of the positioner device. A drive arrangement (26) moves the positioner along the guide unit. Each vertical side has two journals (11,12) located at a relative distance near the top edge. These are displaceable at right angles to the direction of transportation, and can be inserted into corresponding openings on the long side of a palette (P). ADVANTAGE - Simple installation at any point of conveyor.
Patent DE-4116860-A1 (DE)
Title: Plasma display device with matrix array of electrodes - includes composite cathodes which have highly conductive underlayer sepd. by sealant from space contg. discharge gas
Inventor: KIM DAE-IL
IPC: H01J17/49
Filed: 1991-05-23
Abstract: Transparent anode strips (30) are spaced at regular intervals on a forward substrate (10) at right angles to the cathode strips (40) which are formed on a rearward substrate (20). Each cathode consists of an under section (41) of highly conductive Ag paste and an upper section 842) of Ni paste resistant to ion bombardment and chemical attack. A sealing layer (60) between the cathodes (40) lies flush with the Ni paste sections (41) which are thus segregated entirely from the gas-filled space of the panel. ADVANTAGE - Better image quality is achieved with min.  difference in brightness between pixels.
Patent DE-4116961-A1 (DE)
Inventor: KINDERMANN ROBERT
IPC: G01R27/26
Filed: 1991-05-24
Abstract: A measuring circuit which allows a capacitance to be measured in accordance with the discharge method is to be protected against external voltages without a component like a fusible link being destroyed and having to be exchanged in the case of a fault. As protection, a PTC resistor (RK) is used in connection with threshold elements (D1, D2) which short circuit dangerous voltages and limit the short-circuit current. Since the charging time constant is increased due to the PTC resistor (RK), the permissible capacitance measuring range is restricted to a maximum value. Transgression of the maximum value is signalled with the aid of monitoring means (3, 4) of a sequence control (4) which, in turn, ensures that there are no faulty indications and the transgression of the measuring range becomes recognisable. The measuring circuit can be used in measuring instruments for measuring capacitance and in multimeters. <IMAGE>
Patent DE-4117521-A1 (DE)
Title: Reducing local corrosion in diaphragm electrolytic cell - by minimising distance of the weld, connecting cathode pocket to cathode tube, to the anode face
Inventor: DOETZEL OTMAR DR
IPC: C25B11/00
Filed: 1991-05-29
Abstract: In a chloralkali electrolytic cell device operating on the diaphragm process, the distance between the weld area (5) of the cathode pocket (2) to the cathode tube plate (1) and the anode side strip (4) is minimised by ensuring that the weld is made towards the side of the plate (1) facing the anode (4). Also the distances between the side strip (4) and vertical cathode strip (3) and the strip (3) and inner wall of tube (1), i.e. C2 and 1, are kept to a minimum. USE/ADVANTAGE - In cells producing chlorine, alkali hydroxide and hydrogen. By maintaining minimum distances are mentioned, the corrosion susceptible areas, esp. around the weld area (5) are protected by a cathodic protection effect which significantly reduces the rate of corrosion.
Patent DE-4118289-A1 (DE)
Title: Compact heat exchange appts. - for refrigeration dryer in compressed air plant
Inventor: BRUEGGEMANN WERNER
IPC: F26B21/08
Filed: 1991-06-04
Abstract: Heat exchange equipment for refrigeration dryers in compressed air plants consists of an air/air heat exchanger (1), in the form of a plate heat exchanger, and a refrigerant/air heat exchanger (2) in the form of a combined tube/plate heat exchanger. Pref. the heat exchangers (1,2) are arranged alongside or on top of one another and are joined together as a structural unit. USE/ADVANTAGE - The equipment is useful for prodn. of absolutely dry compressed air for use e.g. in the foodstuff and paper industries and in medical applications. It has a small volume and is inexpensive to mfr.
Patent DE-4123282-A1 (DE)
IPC: E06B1/62
Filed: 1991-07-13
Abstract: The invention concerns a sealing element (1) consisting of a foam strip (4, 5) laid in a duct-like cavity (2, 3) in a holder element (12). The foam strip (4, 5) projects out at one end, which is open, of the cavity (2, 3) or can form a projecting length. In order to be able to seal efficiently the largest possible structural joints without any danger of the sealing element working out of the joint by itself with time, the invention calls for an additional holder element (13), also with a cavity, the opening of the second cavity (2, 3) facing in the opposite direction to that of the first cavity (2, 3) and the two holder elements (12, 13) being connected together in such a way the distance between them can be adjusted.
Patent DE-4132660-A1 (DE)
Title: Centrifugal filter for sepg. particulates from hot contaminated gas stream - comprises filtration chamber inner cavity with central cylindrical component to circulate gas and slot opening for axial bore purified gas discharge
Inventor: BUECHELE-BUECHER SIGFRIED DIPL
IPC: B01D45/12
Filed: 1991-10-01
Abstract: The filter comprises a filtration chamber, where the contaminated gas enters via two orifices, oppositely inclined to median horizontal plane, as intersecting jets, and where the contaminant material is deposited on the inner wall surface. The inner cavity of the filtration chamber has a central cylindrical component to circulate the gas and component has a slot opening through which the gas may enter an axial bore to leave the filtration chamber. The central chamber may be pref. eccentrically arranged within the working cavity to increase the gap to expand the gas as it proceeds towards the outlet slot. The pref. form is that the inner surface of the chamber has a series of recesses to improve collection of solids. USE/ADVANTAGE - Axial discharge of purified gas and reduced vortex formation, reduce processing length and reduces cooling, e.g. for removal of aluminium particles in aerospace test facilities.
Patent DE-4136932-A1 (DE)
Inventor: FROMMELT MARKUS
IPC: B25C1/14
Filed: 1991-11-11
Abstract: The setting device operated by powder force has a guide passage (9) for strip-shaped cartridge magazines (8), feed means (10) and retaining means (15) being arranged which project into the guide cross-section of the guide passage (9). Blocking members (13, 14) are arranged in the entry area of the guide passage (9). By means of insertion bevels (8c, 8d) arranged on the cartridge magazine (8), the blocking members (13, 14) are pushed out of the guide cross-section of the guide passage (9) so that the cartridge magazine (8) can be pushed further into the guide passage (9) until it comes to bear against the feed means (10) or retaining means (15). 
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Patent DE-4142257-A1 (DE)
Title: Method for objective measurement of hearing ability of humans and mammals - using evoked acoustic emissions for simultaneously evoking two different frequencies above hearing range of subject with differential frequency within range
Inventor: WARNKE EGON FRED
IPC: A61B5/12
Filed: 1991-12-20
Abstract: The method involves the transmission of two evoking frequencies by air sound to the respective ear to be tested of the subject. The transmission can also be achieved by body sound to the respective ear, or by the intermittent transmission of the two evoking frequencies in bursts. The system for carrying out the method uses a single converting system with a tube (1) and microphone for the production of the evoking frequencies, and also for the reception of the differential frequency. Alternatively two converter systems (4', 4'') can be used. Three separate converter systems can also be used. ADVANTAGE - Existing methods are used only clinically, can be used in general practice also by auxiliary staff.
Patent DE-4200861-A1 (DE)
Title: Mechanically coupled trolleys for self-service store or as luggage handling units - has two different couplings to ensure that trolleys are stored in specific storage lines
Inventor: EBERLEIN WOLFGANG
IPC: G07F7/06
Filed: 1992-01-15
Abstract: Trolleys (5) used for the transportation of goods in a supermarket or for handling of luggage are located in a storage unit (1) when not in use. The trolleys are coupled together by coin-operated latches (16) fitted to the handles that receive a coupling plug (9) coupled by cord or chain. Two types of latch are used that are labelled A and B. Only trolleys with the same designation may be coupled together and are arranged in lines within the storage unit. ADVANTAGE - Prevents storage times from being too long.
Patent DE-4204399-A1 (DE)
Title: Microprocessor controlled domestic machine - has evaluation circuit blocking access to data barred to unauthorised persons
IPC: G05B19/042
Filed: 1992-02-14
Abstract: The domestic machine has a micro-processor control system with operation-storage units in which data can be read, generated by signals from sensors in the machine. A programming function can alter a standard programme into an alternative one by one or more stages. Programme storage units give instructions to the operating portions of the machine dependent on the data in the operation-storage unit. On interruption of the mains supply to the micro-processor system, the contents of the operation-storage unit are transferred to non-transient information-storage units. An evaluation circuit between the operation and programme-storage units blocks access to data in the former which correspond to a programming function barred to the unauthorised. The blocking function can only be cancelled when a release signal is applieed to the evaluation circuit input. ADVANTAGE - Particular parts of a programme can only be altered by those qualified to do so.
Patent DE-4211573-A1 (DE)
Title: Optical imaging system - uses rotationally symmetrical array of individual optical system providing superimposed images of object at infinity at common focal point
IPC: G02B6/32
Filed: 1992-04-07
Abstract: The imaging system has a number of similar optical systems arranged around the optical axis in rotational symmetry, each having 2 input lenses (L1, L2) and an output lens (L3). The rear input lens (L2) is coupled to the output lens (L3) via an optical cable (B). The parallel incident light rays from an object at infinity are imaged onto a common focal point by the individual optical systems, which all have the same focal width (F3). Each joint input lens (L1) pref. provides an image of the object at the focus of the second input lens (L2) to provide a parallel image beam fed along the optical cable (B) to the output lens (L3). ADVANTAGE - Allows increased imaging system dia. for increased image resolution.
Patent DE-4211650-A1 (DE)
Inventor: ARNOLD HERBERT DIPL ING
IPC: B60R16/03
Filed: 1992-04-07
Abstract: Described is a method of coding variants of several control devices (10, 11, 12, 13) cross-linked with each other, in particular in motor vehicles. In the method described, designation of the variants for the selection of various variations of programme and/or operating data for the individual control devices (10, 11, 12, 13) is transmitted, by means of one control device (13) in the group of control devices, to the other control devices (10, 11, 12). Used for this purpose is the bus system (25) by means of which the control devices (10, 11, 12, 13) are connected to each other. Each of the variant designations transmitted is then stored, at least for the length of time the control devices are operating, in a memory (23) in its associated control device (10, 11, 12).
Patent DE-4218034-A1 (DE)
Title: Measuring frictional connection potential of motor vehicle - involves measuring and smoothing vehicle parameters, e.g. speed and acceleration, and deriving vehicle state and road conditions
Inventor: GOERICH HANS-JUERGEN
IPC: B60K28/16
Filed: 1992-06-02
Abstract: The method involves detecting and smoothing measurement values, deriving the vehicle's state from them, identifying the road conditions from the measurement values and vehicle state, predicting a prevailing friction coefficient from the road conditions and vehicle state and deriving the force connection potential from the frictional coefficient. The vehicle parameters smoothed by an exponential filter include the speed, longitudinal and lateral acceleration, yaw angle and steering wheel angle. The road condition is identified as dry, wet or icy. USE/ADVANTAGE - Enables continuous measurement of frictional connection potential of motor vehicle.
Patent DE-4220838-A1 (DE)
Inventor: CHRISTNER JUERGEN DR
IPC: C14C1/06
Filed: 1992-06-25
Abstract: The invention relates to processes for liming skins and hides using proteolytic enzymes in an aqueous alkaline liquor. The liming liquor has a pH within the range from 10 to 14 and contains, at one and the same time, thiourea dioxide and alkaline proteases having elastase activity.
Patent DE-4221097-A1 (DE)
Title: Valve control for IC engine - has cam follower with adjustable length to ensure constant valve opening stroke.
Inventor: VENGHAUS JOACHIM DR
IPC: F01L1/14
Filed: 1992-06-26
Abstract: The control gear for an IC engine valve is driven through an operating stroke via a cam (36) and camshaft (37). It follows a return stroke via a cam follower (35,25) of adjustable length. The effective length of the cam follower from the start of the working stroke is reducible, such that the valve (12) opening stroke is at least approx. constant to the end of the stroke. USE/ADVANTAGE - Valve control for IC engine gives good petrol-air mixture feed to engine cylinder.
Patent DE-4223358-A1 (DE)
Title: Sliding spool valve construction - simplifies assembly by having housing split longitudinally in two halves each having half recesses into which sealing rings guiding valve spool can easily be fitted
Inventor: STOLL KURT DIPL ING
IPC: F16K11/07
Filed: 1992-07-16
Abstract: The valve consists of a valve housing (2) with a bore (3) for a sliding spool (9) which is guided in a series of sealing rings (7) spaced along the bore. The sealing rings are retained in recesses (20) which are formed in one piece with the valve housing (2). The valve housing itself is split longitudinally into two halves (21,22) each containing half recesses into which the sealing rings fit. To assemble the valve housing the sealing rings are placed in the recesses of one half of the housing, and the second half is then secured by welding, adhesive or screws. USE/ADVANTAGE - Simple, low-cost design of sliding spool valve permitting rapid and accurate assembly without damage to sealing rings.
Patent DE-4232947-A1 (DE)
Title: Composite prods. with barrier layer - comprise woven fabric coated with rubber-based bonding agent and polymer film as barrier layer
Inventor: WEISCHEDEL WALDEMAR DIPL ING
IPC: C09J7/21
Filed: 1992-10-01
Abstract: Composites (I) comprise woven fabric (II) coated on one or both sides with a coupling agent (III) and a film (IV) as barrier layer. Also claimed is a process for producing (I), in which (III) is applied to the film (IV) by combining on a calender or by painting with a soln. or paste, after which the fabric is applied, or in which the fabric is treated with (III) and the film is then applied. Pref. (IV) is plastic film, esp. polyamide or fluoro-polymer, with min. thickness 0.02 mm. (III) has min. thickness of 0.01 mm, and consists of an adhesive cement and/or adhesive mixt., pref. a mixt. based on nitrile rubber (NBR), polychloroprene (CR), EPDM or blends of NBR/CR or EPDM/NBR, esp. a mixt. contg. 100 phr polymer, 50-90 phr light, non-reinforcing filler, 0-200 phr carbon black, 10-15 phr plasticiser, 0.5-3 phr antioxidant, 1-3 phr Co naphthenate, 0-2 phr stearic acid, 4-10 phr resorcinol/methylene donor, 3-10 phr ZnO, 0.3-2 phr accelerator, 1.5-2 phr sulphur and up to 10 phr other additives. USE/ADVANTAGE - Rubber/plastic laminates with improved solvent resistance.
Patent DE-4237982-A1 (DE)
Title: Colour correction circuit for high resolution digital video signals - processes digital colour signals in matrix with luminance and chrominance signals, and performs multi-sector colour correction
Inventor: POETSCH DIETER
IPC: H04N9/64
Filed: 1992-11-11
Abstract: Digital colour signals (R,G,B) are taken through a primary colour correction (6). The corrected signals are then matrixed with a luminance and chrominance signals. Correction circuits (9,10) are provided for separate correction of the luminance and colour saturation. The corrected luminance and chrominance signals undergo a multi-sector colour correction (11). The output of the latter is a corrected luminance and chrominance signal or a corrected colour signal. The digital video signals and/or the corrected digital video signals have a bit length of 8 or 10. The video signals processing occurs over more than 10 bits, and the corrected digital video signals are rounded down to 8 to 10 bit width signals. USE/ADVANTAGE - Colour film. Provides improved colour selection even for old films with low colour saturation.
Patent DE-4238181-A1 (DE)
Title: Mounting for communications mast, e.g. for traffic signal unit - has tubes set in concrete and receiving fixing bolts tightened to spread elements and grip inner surface.
Inventor: KLEBS MICHAEL
IPC: E01F9/011
Filed: 1992-11-12
Abstract: A communications mast is mounted on a support embedded into concrete within the ground. The base unit has a plate (1) with locations at each corner aligned with tube (3) set into concrete. The unit is secured by bolts (27) with stems that pass through tubes (28) having slotted ends (29). The threaded sections engage tapered plugs (31). When inserted into the main tubes (3), the bolts are tightened to cause the ends to spread and grip the side walls securely. ADVANTAGE - Simple mounting on ground based location.