baber/WOPTO huggingface dataset:
Patent DE-4015592-A1 (DE)
Inventor: RITTERSDORF WALTER DR RER NAT
IPC: C07C255/66
Filed: 1990-05-15
Abstract: The present invention relates to a method for determining an ion in an aqueous liquid in which the ion enters a phase which is not miscible with the aqueous liquid and a pH indicator in the latter thereby undergoes a colour change which is used to determine the ion, characterised in that, to increase the measurement sensitivity in the phase which is not miscible with the aqueous liquid, a substance is used from the group of compounds of the general formula I 
<IMAGE>
 in which
 one of the radicals R<1> to R<4> is a radical from the group comprising the alkyl radicals, alkoxy radicals and aralkyl radicals and the other radicals are identical or different and are in each case a nitro group, halogen, a cyano group, an alkylsulphonyl group or an alkyl group substituted with halogen,
 of the general formula II 
<IMAGE>
 in which
 one of the radicals R<5> to R<9> is a radical from the group comprising the alkyl radicals, alkoxy radicals and aralkyl radicals and the other radicals are identical or different and are in each case a nitro group, halogen, a cyano group, an alkylsulphonyl group or an alkyl group substituted with halogen or, if R<5> and R<6> are nitro groups, R<8> and R<9> may also be hydrogen, and
 of the general formula III 
<IMAGE>
 in which
 R<10>, R<11>, R<12>, R<13>, R<14> are identical or different and are in each case hydrogen, a nitro group, halogen, a cyano group, an alkylsulphonyl group or an alkyl group substituted with halogen, and to the use of suitable compounds for this purpose and a corresponding means. 
<IMAGE>
Patent DE-4017238-A1 (DE)
Title: Locating leaks in underground, non-metallic pipes - using electromagnetic source moving in pipe, detecting and processing electromagnetic waves contg. position information
Inventor: ILLICH BERNHARD
IPC: G01M3/38
Filed: 1990-05-29
Abstract: The method involves moving a source of electromagnetic waves along a profile line through the pipe. The source transmits high frequency electromagnetic waves in or through the walls. The reflected electromagnetic waves are received from within or outside the walls. The received waves contain information about the position of the source and/or receiver. The received information is processed. USE/ADVANTAGE - Esp. for locating leaks in concrete or stoneware pipes for supplying or carrying away water. Defects in pipes and surrounding earth are more accurately located.
Patent DE-4017999-A1 (DE)
Title: Magneto=optical recording material - has multilayer construction of magnetic and optical material
Inventor: WELLER DIETER DR
IPC: G11B11/105
Filed: 1990-06-05
Abstract: The magnet optical recording material has memory zones (4) formed on a substrate (3) that is selected for a specific wavelength emission (5). The memory zone can be written into and cancelled by the emission.$  The memory zone is produced as a multi-layer system that has a number of layers (7-10) of a magnetic material that are separated by optically effective layers (12-14). The materials are selected such that mixing of the components does not occur at the interfaces.$  ADVANTAGE - Increases recording density and data handling rate.
Patent DE-4019117-A1 (DE)
Title: Titanium (alloy) tubing prodn. - by welding together strip, cold rolling and recrystallisation annealing
Inventor: DIEDERICHS ROLF DR
IPC: B21C37/08
Filed: 1990-06-12
Abstract: Producing Ti (alloy) tubing by forming strip into a tubular shape, longitudinally welding and possibly machining the resultant weld beam also includes at least 10% cold roll deformation of the welded tube followed by recrystallisation annealing in air or protective gas.
Patent DE-4019575-A1 (DE)
Title: Adjustable sun blinds for vehicle - has provision for extension in length in oblique sunlight
Inventor: JOOSS GUNTER
IPC: B60J3/02
Filed: 1990-06-20
Abstract: Extendible or adjustable sun blinds for a vehicle having inner and outer parts which exactly match and which can be slid over each other, either using friction or operating friction-free with an engagement mechanism. The sun blinds can be adjusted or extended in length to give protection against sunlight falling obliquely from behind. ADVANTAGE - Versatile sun blind which gives protection under all conditions, especially for small persons.
Patent DE-4022093-A1 (DE)
Title: Optical arrangement for data reading and writing - use precisely-aligned read and write beams mounted on single tracking and focussing mechanism with alternative optic designs
Inventor: KUEHN HANS-ROBERT
IPC: G11B7/0055
Filed: 1990-07-11
Abstract: Optical data storage and retrieval using the LIESST effect (Light Induced Excited Spin State Trapping) requires the use of separate light sources for reading and writing or erasing data. A light source (L1) and grating (G) produce a read beam (H1) and offset tracking beams (B1, B2), which are reflected from the disc surface (AT) to multiple detectors (A-F). The signals from these detectors form the data and control outputs. A separate light source (L2) for data write/erase operations may be mounted on the same tracking and focussing assembly. Alternative designs include multiple read/write light sources, and alternative tracking methods dispense with tracking beams (B1, B2).
Patent DE-4022971-A1 (DE)
Title: Cylinder lock with two cylinders -  either of which can be coupled to lock actuating lever by insertion of key
Inventor: EFUNE MICHAIL
IPC: E05B9/10
Filed: 1990-07-14
Abstract: A cylinder lock has two cylinders (1,2) each of which can be rotated by the key (9,9') which can be inserted from either side of the door. Each cylinder can be coupled to the hub of the lock actuating lever by a coupling (7,7'). The coupling consists of two cup shaped elements in which a compression spring (10) is fitted. Each coupling element has radially projecting teeth which engage grooves in the cylinders and in the bore of the actuating lever (5). When no key is inserted in the lock the actuating lever is coupled to both cylinders which are held locked by their locking pins (3). When a key is inserted the cylinder on the opposite side of the door is uncoupled and allows the key to rotate the corresponding cylinder and open the lock. USE/ADVANTAGE - Cylinder lock with two cylinders for extra security.
Patent DE-4023119-A1 (DE)
Title: Insulated protective housing for portable data carrier - has cladding and pressure relief valve
Inventor: REISACHER JOHANNES DIPL ING
IPC: G06K19/077
Filed: 1990-07-20
Abstract: A thermally protected data carrier (1) is located within a housing (6) and contains information that is remotely transmitted to control a production system. The main housing is produced of insulating material and this has an outer layer of polypropylenesulphide (9, 10). The data carrier chamber (5a) is enclosed by a plug (8). Wires (3) connect with an antenna bar (2) for external communication purposes. A ball type relief valve (12) is included in the cladding and this opens to relieve any pressure of an upper limit is reached. ADVANTAGE - Protective housing includes pressure relief.
Patent DE-4029477-A1 (DE)
Title: Tesseral gradient coil for nuclear spin tomography device
Inventor: FRESE GEORG DIPL PHYS
IPC: G01R33/20
Filed: 1990-09-17
Abstract: A tesseral gradient coil for a nuclear spin tomography device has a hollow cylindrical internal vol. with cylinder axis in the Z direction of a cartesian coordinate system. The hollow vol. contains gradient coils for generating magnetic field gradients whereby each winding of each tesseral gradient coil contains two segments (5a-7b) lying in the azimuthal direction connected by conductors. One segment of each winding lies on a minimum possible radius (r1) and the other on a maximum possible radius (r2) wrt. the cylinder axis.
Patent DE-4033369-A1 (DE)
Title: Selective factor VIII recovery from plasma -  using chromatographic beds of biocompatible carriers for permeation chromatography contg. plant cell wall structures etc.
Inventor: MATTHES GERT PROF DR
IPC: C07K14/755
Filed: 1990-10-17
Abstract: A process for selective Factor VIII recovery from fresh plasma in donor plasma pheresis comprises arranging one or several chromatographic beds of biocompatible carriers for permeation chromatography pref. consisting of plant cell wall frameworks in the process of mechanical plasma pheresis. The donor plasma is led through these beds and Factor VIII and other very high molecular proteins are sped. in exclusion volumes. Serum albumin and proteins with molar mass less than 500kD are eluted later. The Factor VIII deficient plasma is then sent back to the donor, via a distributor connected after the beds. Other coagulation factors or plasma proteins can be selectively enriched in the donor plasma pheresis. A device for selective recovery of Factor VIII from plasma consists of a chromatographic bed of bio-compatible carriers used for permeation chromatography pref. of plant cell wall structures with an exclusion limit of protein molar mass above 150kD and a distribution system for the separate addition of plasma and plasma replacement solns. and/or the separate removal of at least two eluate fractions. The plant cell structures retain more than 90% dextran. USE/ADVANTAGE - Factor VIII enriched plasma is obtd. which can be used in the industrial fractionation of plasma for the treatment of coagulation problems, esp. haemophilia.  The Factor VIII deficient plasma is recycled to the donor.  As the amt. of plasma removed is 40% less than in previous processes, the drop in volume previously experienced in donor plasma pheresis is avoided.  The yields are the same, even though the volume of plasma is reduced
Patent DE-4042159-A1 (DE)
Title: U=shaped ducting cable laying method
Inventor: SHIMIZU SHOHACHI
IPC: H02G1/06
Filed: 1990-12-28
Abstract: The method uses a slide (2) along which travels a shuttle (3) attached to the end of a draw line (4). The shuttle is made to travel from the remote end of its guide to the end where the coiled cable (c) is located. The end of the cable is attached to the shuttle and the shuttle is made to travel back along its slide by winding up the draw line (4). As the shuttle travels back it draws the cable along a cable duct (1). When the shuttle reaches the remote end again, it is disconnected from the now-laid cable. Several variations on this basic principle are described. The shuttle's slide may be a slotted tube along the top edge of one limb of the U-shaped channel that forms the cable duct.
Patent DE-4100690-A1 (DE)
Title: Low pressure turbine regulating system - has rotor guide body consisting of rotor ring and regulator ring
Inventor: JANK SIEGFRIED
IPC: F03B15/00
Filed: 1991-01-11
Abstract: The regulating system is esp. for a Kaplan turbine. It has a guide body around the turbine rotor (1) and the inlet profile is adjusted by displacement of a ring-shaped body. The guide body consists of two concentric ring-shaped parts, e.g. a rotor ring (14) and an axially displaceable regulator ring (5). In its upper end position, the regulator ring closes the inlet profile. The turbine (1) has a shaft with a vertical axis (3); or it may be constructed as a Kaplan turbine. USE - Power regulation device for Kaplan turbine.
Patent DE-4101366-A1 (DE)
Title: Tooth brush of adaptable hardness - has bristle tufts of variable hardness in vertical and horizontal motion direction respectively
Inventor: VUKOSAVLJEVIC JOVICA
IPC: A46B9/12
Filed: 1991-01-18
Abstract: The tooth brush varies the hardness of the bristle tufts, dependent on the type of cleaning. It has a number of flat transverse ribs (R) protruding at right angles from the bristle bed (Zb). All bristles tufts (B) have a lower degree of hardness, between extra soft and medium, during vertical cleaning movements, and a higher hardness degree, between medium and extra hard, during horizontal movements, when cleaning the tooth crowns. ADVANTAGE - Long service life, and max cleaning effectiveness.
Patent DE-4104921-A1 (DE)
Title: Metal-clad gas-insulated HV switchgear - has reference electrode set into opening of cladding for capacitive measurement of partial discharges at points along rod insulator
Inventor: DUNZ THOMAS DR
IPC: H02B13/065
Filed: 1991-02-18
Abstract: An opening (2) is made in the metallic cladding (1) for an insulated reference electrode (12) which forms with the high-voltage conductor (6), and/or an electrode (5) at the same potential, a capacitance substantially free from partial discharges. A capacitive measuring electrode (9) surrounds the other end of the insulator (3) on which the conductor (6) is supported. Current pulses proportional to partial discharges therein are picked of (10, 11) for evaluation by a resistance-capacitance bridge circuit. ADVANTAGE - All dielectrically weak points can be located with precision both in mfg. quality control and in continuous monitoring during opertion.
Patent DE-4105185-A1 (DE)
Title: Refillable writing or marking instrument - has firmly fixed sealing plug which can be removed by rotating it
Inventor: BIEGEL FRIEDRICH
IPC: B43K23/08
Filed: 1991-02-18
Abstract: The refillable writing or marking instrument, such as a pen or paint-brush has a barrel (1) which forms a reservoir for the writing medium. The barrel is sealed by a removable plug (22) which fits in an inner sleeve with a snap action. The plug (22) has a skirt (8) which fits in an annular slot in the inner sleeve which is permanently fixed in the base of the barrel (1). The annular slot has a floor with helical surfaces which match the end faces of the skirt (8) of the plug. These helical faces enable the plug to be removed by rotating it in the appropriate direction. USE/ADVANTAGE - Refillable pen with a secure sealing plug which can be easily removed.
Patent DE-4107280-A1 (DE)
Title: Workshop floor trench cover - has right angle section members supporting plates and secured to profiled mountings
Inventor: EPPING LUDGER
IPC: E04F19/08
Filed: 1991-03-07
Abstract: The cover is particularly for trenches in workshop floors, and comprises plates supported by profiled members fixed to the trench edge. These members(4) are of right-angle section, with a horizontal flange (4a) forming the supporting surface. They are secured to profiled mountings (3), in turn fixed to the ground. Cushions(6) of resilient material such as plastic or rubber can be mounted on the supporting surfaces, being typically clamped, glued or screwed to them. The members can be welded together, or secured by bolts in elongated holes, so as to allow adjustment in the vertical direction. ADVANTAGE - Prevents rattling as vehicles etc. travel over.
Patent DE-4111541-A1 (DE)
Title: Powered pump assembly with rotary pump and slotted tube motor - has the rotor on the delivery side of the impeller
Inventor: WUNDERLICH ERHARD DR ING
IPC: H02K7/14
Filed: 1991-04-09
Abstract: A rotor (14) is mounted at both ends and has an impeller (16). Total output passes from the input to the delivery side through a slotted tube (12) between the rotor (14) and a stator (24). The slotted tube (12) together with a seal (18) can be detached from a pump housing (20) which encloses the impeller (16) and forms a mounting for the second section of shaft (28). The rotor (14), impeller (16) and coaxial shaft sections (28,40) are inserted as one unit in the slotted tube (12), which forms a mounting for one of the shaft sections and secures the stator (24). USE/ADVANTAGE - The rotor does not need to be dismantled and reassembled for balancing. No heating of fluid takes place on the input side.
Patent DE-4114568-A1 (DE)
Title: Uniform joints prodn. between paving slabs - involves framed distance piece made up of horizontal and several uprights to required width of joint
Inventor: KRONER HELMUT
IPC: E01C5/00
Filed: 1991-05-04
Abstract: A device for producing even and uniform joints in paving slabs in road works consists of a framed distance piece (2,3,4,5) made up of a horizontal flat bar (5) and a number of vertical bars (3,4) at right angles which project above (4) the horizontal bar (5) by the distance (A), and below (3) it by a distance (A) less the thickness of the horizontal bar (B). The distance between the uprights (3,4) is the thickness of the joint, and the width of the horizontal and vertical bars (3,4,5) is also the thickness of the joint. There are slots (2) in the horizontal bar (5) between each pair of uprights (3,4) which allow for grass roots. USE/ADVANTAGE - The device is laid in between adjacent paving slabs to maintain a uniform width of joint.
Patent DE-4114710-A1 (DE)
Title: Hub brake for wheelchair - is actuated by lever and connecting rod and is unaffected by tyre pressure
Inventor: BEESE OTTO
IPC: B62L1/00
Filed: 1991-05-06
Abstract: Wheelchairs are usually fitted with brakes which act directly on the tyres of the main wheels. The effectiveness of such a brake depends upon the tyre pressure and in the event of a puncture the brake becomes ineffective. To overcome this problem it is proposed to fit a brake disc (1) to each main wheel. The disc has a flange on the rim and a brake-shoe (5) is pressed against this flange by a lever (3) and a connecting rod (4). This type of brake is easily fitted to any standard type of wheel chair. USE/ADVANTAGE - Inexpensive brake for a wheelchair. The effectiveness of the brake is independent of the tyre pressure. It may act as an external contracting band brake.
Patent DE-4117465-A1 (DE)
Title: Clip fixing for modular breaker or fuse - uses bolt with front part released via 2 wave shaped arms
Inventor: URBAIN GEORGES
IPC: H02B1/052
Filed: 1991-05-28
Abstract: The clip fixing  allows rapid fixing to a corner rail (11) using a bolt (20) with a front part (21) fitting beneath the lipped edge (12) of the carrier rail (11).  The front part (21) is attached to an operating handle (25) via a  pair of arms with a wave shaped configuration, acting as elastic devices for releasing the front part (21).  Each arm has two successive half waves extending in opposite directions. USE - For fixing modular breaker or fuse to carrier rail.
Patent DE-4119009-A1 (DE)
Inventor: EISSELE WILHELM
IPC: B27M3/00
Filed: 1991-06-08
Abstract: A laminated-wood press apparatus for the production of curved glued beams has two holding devices for the two outer opposite side faces of a glued beam as well as an abutment device for the underside and a press device for the top side of the glued beam. This press device comprises several individual presses with which the top side can be pressed in the direction of the underside of the glued beam. This laminated-wood press apparatus is distinguished by the fact that the abutment device (48) has several abutments which are adjustably mounted on at least one of the holding devices (30) in such a way that the abutments (48) can be put into as accurate a position as possible along a curved line (14). Furthermore, the press cylinders (62) of the press device can be actuated pneumatically or hydraulically and are attached to a common pressure-medium line. <IMAGE>
Patent DE-4121256-A1 (DE)
Title: Electric machining tool e.g. sander with dust collection - has supply cable lead fitted in clip attached to dust container
IPC: A47L9/14
Filed: 1991-06-27
Abstract: The electrical machining tool has a dust container (2) with a fixing clip (9) for the machine cable lead (3) attached directly to the dust container (2), or to a holder for the latter. Pref. the fixing clip (9) comprises a clamp ring fitting around the outside of the cable lead (3), mounted at the rate of the dust bag (2) acting as the dust container. The clip (9) allows the dust bag (2) to be removed for emptying or replacement. The cable lead (3) is secured to the emptied or replacement dust bag (2). USE/ADVANTAGE - Also for belt grinding machine, saw or milling machine. Prevents damage to supply cable lead.
Patent DE-4130240-A1 (DE)
Title: Security safe for computer software and documents - has panel of glass built into door enabling contents to be viewed
Inventor: COHAUSZ HELGE B DIPL ING
IPC: E05G1/024
Filed: 1991-09-11
Abstract: The security safe has a box shaped form and a door (2) that can be locked (3). Set into the centre of the door panel is a panel of fire proof security glass (4), which filters out infrared radiation. Since the safe is to be used for items that have no directly convertible value, the panel allows a thief to view the contents and discourage an unnecessary attempt at entry. ADVANTAGE - Discourages forced entry and protects against fire.
Patent DE-4136856-A1 (DE)
Title: Packaging system for two compact discs or similar shaped items - has centre element with spigot location for discs and hinged top covers
IPC: G11B33/04
Filed: 1991-11-10
Abstract: A packaging system for a pair of compact discs has a centre element that is square in plan view and has a central spigot (2) that provides a location for the discs. Two of the sides have angled walls (8) and on one side these have pivot points (7) to receive hinged covers. The centre spigots are located on raised flanges (1) such that the discs do not lie in contact with the packaging. The two covers provide full enclosure. ADVANTAGE - Efficient book-type packaging system for discs.
Patent DE-4205676-A1 (DE)
Title: Forming hollow cylindrical bodies from solid semi-fabrications - using successively forming rolls and drawing die
Inventor: SCHWAGER ARIBERT PROF DR ING
IPC: B21C1/24
Filed: 1992-02-25
Abstract: Cylindrical hollow parts are mfd. from solid semi-fabrications by a method in which the part is preformed between a ram (1) and at least two pressure rolls in a forward movement in which an increase in dia. (X) results. The rolls are then removed and a split drawing die in the form of at least two segments (4) is applied at the end position of the rolls and to apply a stretch-drawing face to produce the required dia. (D). ADVANTAGE - High degree of accuracy in forming.
Patent DE-4215270-A1 (DE)
Title: Device for storage of hot water - comprises two containers with heat exchanger in lower part of outer container and pipe system carrying hot water into inner and outer containers
Inventor: NESCHOLTA FRIEDHELM DIPL ING
IPC: F24D11/00
Filed: 1992-05-09
Abstract: The outer container (1) has the greater volume, and the heat exchanger (2) in its lower part has an overhead funnel shaped screen (4) incorporating a pipe system (5) to convey hot water through a pipe (6) into the inner container (7) and through the thermal branch (8) into the upper part of the outer container. The inner container is in the upper part of the outer container, and has an opening in its base for the pipe (6). Water is fed into the bottom of the outer container through the flow pipes (9) and cool water is discharged from both containers through the return pipes (10). ADVANTAGE - Thermal loss present in conventional systems is avoided.