baber/WOPTO huggingface dataset:
Patent DE-3912582-A1 (DE)
Title: Objective evaluation of headphone quality - employs graphs and experience guide data to determine ability to reproduce 3 dimensional sound without subjective factor
Inventor: KOENIG FLORIAN DIPL ING
IPC: H04R5/033
Filed: 1989-04-17
Abstract: A method is described to accelerate the assessment of quality criteria for head phones, not merely in respect of the faithfulness of tone formation but also with regard to the ability to re-produce three-dimensional sound source effects, in such a manner that the subjective factor can be excluded. This is done mainly by the evaluation of sound echoes by various approaches.
Patent DE-3915976-A1 (DE)
Inventor: FAULSTICH INGO DR ING
IPC: B23F23/12
Filed: 1989-05-17
Abstract: A process and apparatus for the finish machining of the tooth surfaces of cylindrical gears by hob peeling has the right and left tooth surfaces produced by separate machining operations to produce tooth modifications e.g. crowning due to the machine executing a change of centre difference and/or a change in the additional rotation of the work piece (10) relative to the tool (9) depending on the axial displacement of the carriage (3). During the axial displacement of the carriage (3), one or simultaneously several of a number of adjustment parameters which include centre difference (a), eccentricity (e) of the tool, pivoting angle (E) and reduced lead (p) and which describe the additional rotation are changed automatically in such a manner that distortion of the work piece tooth surfaces arising from the creation of the tooth modifications is compensated for. A tool (9) is used to machine the teeth and the cutting geometry of the tool on the right and left tooth surfaces is adapted to the adjustment parameters which are effective during the machining process. <IMAGE>
Patent DE-3933697-A1 (DE)
Title: Multi-head wood sanding machine - has abrasive belts with sanding direction deviating from feed and cross-feed directions of work
Inventor: KREIPE HERBERT
IPC: B24B21/04
Filed: 1989-10-09
Abstract: The machine has a belt conveyor (20) which feeds the workpiece (6) under a series of sanding heads arranged in pairs (7,8) (9,10) and finally a roller brush (19).  The sanding direction of belts (7,8) is approx. across the direction of work feed, and of belts (9,10), approx.  parallel to the direction of work feed. The sanding heads are pivoted at one end (21,22,23) to cause so that they can be adjusted by leadscrews and motors (25,26) to cause the direction of sanding to be inclined by up to 20 deg. from the feed and cross-feed directions.  The angular setting is varied according to the work feed velocity. USE/ADVANTAGE - Can be used on all types of wood surfaces.  The number of sanding marks is increased on the surface quality thereby improved without the need for buffing.
Patent DE-3934281-A1 (DE)
Title: AC inverter half bridge circuit - has input switching stages with capacitor and inductance stages
Inventor: HOFGRAEFF HANS G
IPC: H02M7/519
Filed: 1989-10-13
Abstract: The a.c. inverter-half bridge circuit has d.c. inputs (1, 2), one of which (1) connects with the anode of a GTO thyristor (V1) with the cathode connected to an inductance (L1). This also connects with a second thyristor (V2). Diodes (V5, V6) are coupled to the thyristors, together with capacitors (C1, C2) and further diodes (V3, V4). The inductance has a centre tapping that forms the output point.  The arrangement provides a delay in the charge cycle such that when a maximum current is reached the input switching is complete. ADVANTAGE - Simplifies construction of system.
Patent DE-3942485-A1 (DE)
Title: Method for loading articles into balloon - uses evacuated chamber and with loading tube into neck of balloon
Inventor: WOLF RAINER
IPC: A63H27/10
Filed: 1989-12-22
Abstract: The balloon (3) is clamped over the neck of the jig with the main part inside the chamber. After evacuating the chamber, the balloon is extended enabling the loading tube (21) to be inserted. This allows insertion of items into the balloon. An insert sleeve (22) eases the insertion and removal of the tube. The chamber is evacuated by a blower. After loading the items, a plug is inserted and the neck of the balloon closed, while the tube, plug, etc. are removed. ADVANTAGE - Simple loading process, reduced damage risk for balloon.g
Patent DE-4005763-A1 (DE)
Inventor: PEDAIN JOSEF DR
IPC: C09D7/80
Filed: 1990-02-23
Abstract: The use of urethane group-containing isocyanates or isocyanate mixtures with (cyclo)aliphatically bonded isocyanate groups as drying agents (desiccants) for moist coating compositions containing assistants and additives for (cyclo)aliphatic isocyanate prepolymers as binders, and a process for the preparation of a coating composition which contains an NCO prepolymer of this type as binder, in which at least the not completely dry assistants and additives are first treated with a drying agent of this type at from 60 to 120 DEG C.
Patent DE-4010748-A1 (DE)
Inventor: STAHL WERNER DR
IPC: B04B11/02
Filed: 1990-04-03
Abstract: To increase the throughput in a shearing centrifuge (10) in which the shearing base (24) is displaced in the axial direction relative to a screening drum (14, 16) into an advanced and a retracted position by a cyclic forward movement and backward movement, respectively, the mixture which leaves the advanced position of the shearing base (24) is fed to the screen (14, 16) until the next forward movement is about to start. The throughput is further increased by supplying a small quantity of the mixture to the screen (14, 16) both before the shearing base (24) reaches its advanced position and after the shearing base (24) leaves its advanced position.
Patent DE-4012772-A1 (DE)
Title: Hammer drill bit - has cruciform cutters with notches in two opposite ones
Inventor: BOEHM OTTO
IPC: B23B51/02
Filed: 1990-04-21
Abstract: The hammer-drill bit is for use in rock or concrete. it has four radial cutters (5) on radial arms on a cemented-carbide cruciform insert, together with a centring tip (4) protruding above the cutters. Two cutters on opposite sides of the tip are each interrupted by one or more notches (6) betwen the tip and the peripheral portion (8). The other two cutters are continuous, with no notches. ADVANTAGE - Long life and fast working.
Patent DE-4016469-A1 (DE)
Title: V-belt for power transmission - has oblique transverse grooves of irregular pitch cut in its inner surface
Inventor: BAGOWSKI DIETER
IPC: F16G5/20
Filed: 1990-05-22
Abstract: The invention concerns a V belt of the type used by the engines of motor vehicles in order to drive auxiliary equipment.  The inner surface (11) of the belt has a number of grooves (13) extending from one side to the other.  These grooves (13) are inclined at an angle (alpha) to the transverse plane which is at right angles to the longitudinal direction of the belt. The angle (alpha) lies between 1 deg and 10 deg.  The grooves (13) are spaced at a non-uniform pitch (P) and are of irregular depth. USE/ADVANTAGE - The oblique arrangement and irregular pitch and depth of the grooves reduces the operating noise of the belt.
Patent DE-4018281-A1 (DE)
Title: State of vehicle determination arrangement - detects temp. of cooling water and contains detector, transducer, A=D and characteristic change device for transducer
Inventor: HARA TOSHIRO
IPC: G07C5/08
Filed: 1990-06-07
Abstract: The state of vehicle determination appts. contains a state voltage transducer (R1-R3) generating a voltage corresp. to the output of a state detector. The converted voltage is digitised by an analogue-to-digital converter (2b). A characteristic changeover device (Q1) changes the output characteristic of the transducer depending on whether the digital signal is greater than a threshold value or not. USE/ADVANTAGE - Measuring temp. of cooling water in motor vehicle engine. High degree of measurement accuracy over a wide temp. range.
Patent DE-4020517-A1 (DE)
Title: DC supply circuit for gas discharge lamp - uses choke coil infront of full-wave rectifier and output smoothing capacitor
Inventor: HOLZER WALTER DR
IPC: H05B41/18
Filed: 1990-06-27
Abstract: The circuit comprises a DC rectifier and at least one smoothing capacitor (5). A current limiting choke coil (2) is connected infront of the full-wave rectifier (6), pref. with a further coil (7) on the output side of the latter which cooperates with the smoothing capacitor (5) for providing a damping circuit. Pref. the gas discharge lamp (1) is provided with a starter (13) and a polarity selection switch (10) using a bistable relay (15), lying in the current circuit of the starter (13). ADVANTAGE - Provides flicker-free light.
Patent DE-4021594-A1 (DE)
Title: Magnetic pump using ferromagnetic powder - has powder drop reciprocated in closed cylinder via applied magnetic fields
Inventor: BOENICKE HOLGER
IPC: H02K44/02
Filed: 1990-07-06
Abstract: The magnetic pump comprises a hollow cylinder  (2) with inlets (3.1, 3.2) and outlets (4.1, 4.2) containing a drop (1) of a ferromagnetic powder. The latter is displaced within the cylinder (2) via a permanent magnet system (5) and an  electromagnetic coil (6) respectively providing a stationary magnetic field and a variable magnetic field with a higher field strength. Pref. a ferromagnetic core is provided at the center of the ferromagnetic powder drop (1). USE - For circulation or dosing of aggressive medium.
Patent DE-4031470-A1 (DE)
Title: Writing instrument -  has grip formed by concave surfaces which provide firm grip and prevent fatigue
Inventor: JARASS LORENZ PROF DR
IPC: B43K23/008
Filed: 1990-10-05
Abstract: A writing instrument, such as a ball point pen, has a handle (3) with a region of enlarged diameter near the writing tip. Concave surfaces (4, 5, 6) are formed in this region. The sizes and shapes of these concave surfaces are such that they provide a confortable grip for ther user of the instrument and are arranged with respect to each other to suit either a right-handed or a left-handed person. These concave surfaces enable the writing instrument to be used for long periods without tiring the writer. USE/ADVANTAGE - Writing instrument with a comfortable grip.
Patent DE-4035871-A1 (DE)
Title: Vibration insulation and uncoupling flange - is for connection of throttle valve union to load adjusting device
Inventor: GANSER OTMAR
IPC: F02D9/10
Filed: 1990-11-12
Abstract: The throttle valve union (1) is connected via a ring-shaped uncoupling component (2) to a suction elbow bend (3). The throttle valve fitted in the suction channel (4) of the throttle valve union on a rotatable shaft is pivotably operable via an operating lever against the force of a return sprign by a Bowden (RTM) cable. By means of a flange-type outer ring, the uncoupling component (2) is screwed on to the throttle valve union (1). In the same way, the suction elbow bend (3) is screwed to a flange-type inner ring of the uncoupling component (2). The outer and inner rings of the uncoupling component are somewhat tubularly formed, the outer partly encompassing the inner with an intervenning ring gap. USE - To dissipate vibrations from the connection between a throttle valve union and a suction elbow bend leading to an IC engine.
Patent DE-4036608-A1 (DE)
Title: Motor vehicle seat - has two hinges located between seat rail and seat, and fastened to respective components
Inventor: SPECHT MARTIN DIPL ING
IPC: B60N2/04
Filed: 1990-11-16
Abstract: The seat has a seat pad and a back rest, both adjustably held on a seat fastener unit. A rail arrangement has a bottom rail, connected to the vehicle chassis, and a top rail, to which the seat fastener unit is adjustably connected. A scissor hinge (17) with integrated elements (20,21) is located between top rail (6) and lower seat pad frame (16), near the front edge of the seat. One element is fastened to the seat, the other to the frame. There is a similar hinged (23) near the back of the seat. ADVANTAGE - Improved seating comfort.
Patent DE-4039430-A1 (DE)
Title: U=shaped cable anchor with pivoting non-detachable holding block - has central collar and fish plate with central hole for receiving rod or cable
Inventor: KAISER ROLAND
IPC: H02G7/05
Filed: 1990-12-11
Abstract: The U-shaped anchor (1) has its free ends threaded with nuts (19) and locknuts (20). The fishplate (5) and holding block (4) both pivot around one leg of the anchor, with grooves (7, 10) that fit around the other leg. The holding block has a central collar (8) and the fishplate has a central hole (18) of smaller diameter than the collar. The finishing sleeve of the cable or rod to be anchored passes up through the hole in the fishplate and carries a circular bush which fits inside the collar (8). The plate (7) covers the collar. The fishplate is made from steel but the holding block and cover plate are made from insulating material. A further insulating collar can project downwards from the fishplate to cover the finishing sleeve of the cable or rod. ADVANTAGE - Simple assembly or disassembly with non-detachable components.
Patent DE-4039505-A1 (DE)
Title: Starch packing material prodn. - in which particles are finely coated with nucleating agent, fused in extruder, expanded, cut, dry expanded again, and cut to final size
Inventor: REICHENECKER HANS
IPC: B29C48/30
Filed: 1990-12-11
Abstract: Packing material of starch particles is produced by applying a nucleating agent finely distributed over the surface of starch granules and to a weight of 0.1-0.2% of the weight of granules, using nucleating agent particles of about 40 micron dia.; the treated granules are then fed to an extruder where they change to a high viscosity liquid; the nucleating agent is decomposed by the heat and the foamed starch formed is extruded immediately after it has greatly expanded; the extruded material is cut off, fed into a holder, stored, and finally subjected to a secondary expansion to acquire its final particle size. - Pref. extruded material is cut to a length which after its expansion yields packing particles approx. 15-30 mm long; the extruder die used forms the product into two parallel and hollow tubes joined together by a narrow web.
Patent DE-4042236-A1 (DE)
Title: Lightning conductor holder with resilient head part - has U-shaped sheet metal formed with pressed knubs in free shanks
Inventor: SCHMIDT HENNING
IPC: H02G13/00
Filed: 1990-12-29
Abstract: One or more knobs (5, 6), parallel to the web (4) of the U-shaped part, are pressed in the free shanks (2, 3), near to the top edge. The web has at least one bore (11) and beads (7, 8) at both sides, near to the outer edges and protruding inwards. The beads extend around the edges (9, 10) between the web and the free shanks. The thickness of the beads is the same, or slightly larger than the thickness of the sheet metal, which is less than the conductor dia. USE/ADVANTAGE - For lightning conductors, with reliable hold and easy fitting.
Patent DE-4100327-A1 (DE)
Title: Assembly device for fitting boots on skis - has intermediate support plate resting freely on support element
Inventor: LEMOINE PHILIPPE
IPC: A63C11/26
Filed: 1991-01-08
Abstract: The device for fitting a boot onto a ski has a longitudinal support plate (5) fixed on the ski and supporting at least one of the two ski bindings (3,4) whilst a support element (13) is inserted between the intermediate support plate and the top side of the ski. This plate (5) rests freely on the support element (13) which in turn is mounted so that it is displaceable longitudinally under the intermediate support plate and is fixable in an adjustable longitudinal position. The dimensions of the support element in the longitudinal direction of the ski is less than the dimensions of the plate (5). The support plate can bear both ski bindings (3,4). USE/ADVANTAGE - The support points for the boot on the ski can be varied.
Patent DE-4100697-A1 (DE)
Title: Insulating glass packet
Inventor: LISEC PETER
IPC: E06B3/677
Filed: 1991-01-11
Abstract: Filling inner zone between insulating glass panes with a gas other than air, and pref.  argon comprises pressing assembled glass panes together in a packet in a press. At one corner zone, one pane is held at a gap from the distance holder frame for probes to be inserted into the inner space.  Pref the glass panes forming the packet are pressed together while they stand vertically, with a pane held apart from the frame at one of the lower corners by bending. The probe to insert the gas blows the gas into the hollow space parallel to the lower horizontal leg of the frame. While the gas and air mixt. is withdrawn from the interior of the glass packet, as the probe delivers air, the pressure within the packet is higher than in the ambient atmos. When the air within the glass packet has been wholly exchanged for gas, pressure is applied to the glass panes at the open corner. The probe to extract the gas air mixt. is angled upwards away from the probe delivering the gas into the hollow interior space, and both probes are inserted simultaneously. The gas/air mixt. is extracted from the interior until the air content is below a preset value. The vol of the space is calculated, and the gas vol. fed in exceeds this vol. by a preset fraction.
Patent DE-4101495-A1 (DE)
Title: Drum with arrangement to adjust drum skin tension - has stand with concave support surface to facilitate adjustment
Inventor: HENTZE JUERGEN
IPC: G10D13/02
Filed: 1991-01-19
Abstract: A percussion instrument, in particular a drum, has a body (15) which forms a resonance chamber. The body is open at both ends, and at least one end is covered by a membrane (18) in the form of a skin. The tension in this membrane can be adjusted by a device (11) whilst the drum is being played. The tensioning device consists of a ring (26) attached to a number of tensioning elements (36) which have their other ends attached to the drum body. The drum is mounted on a stand which has a concave surface to support the drum. This concave surface extends over an arc of at least 90 deg. USE/ADVANTAGE - The support facilitates the adjustment of the drumskin tension whilst the drum is being played.
Patent DE-4103465-A1 (DE)
Inventor: SMITH TERENCE DIPL ING
IPC: F16H63/38
Filed: 1991-02-06
Abstract: A locking device (3), in particular for locking shift gear shifting elements, essentially has a housing (8) and a locking bolt (12) coaxially arranged in the housing (8) and retained in a shifting position by a pressure spring (15). A catch ball (7) that engages a catch recess (6) of the sliding selector shaft (2) is arranged at the outward end (16) of the locking bolt (12). For shifting, the catch ball (7) is pressed into the locking device (3) together with the locking bolt (12). The locking bolt (12) actuates a shifting element (12) arranged within the housing (8).
Patent DE-4106617-A1 (DE)
Title: Clean room handling system for semiconductor wafers - has two parallel rotational axes and cooperating grippers holding handled component in clean air stream
Inventor: GEISSINGER JUERGEN DR ING
IPC: B25J15/02
Filed: 1991-03-01
Abstract: The handling system has a gripper with cooperating gripper plates (8', 9'), supported by a pair of carrier rods (8, 9), with two axes of movement (2, 3) lying outside the handling zone in which the handled parts are surrounded by a clean air flow stream. Pref. the parallel rotational axes (2, 3) are joined together by a support arm (7), one of the axes (3) being aligned with the direction of movement of the gripper plates (8', 9'). Pref. a coordinate linear drive (5) is provided. USE/ADVANTAGE - Forming structures or wafers as for chip prodn., in semiconductor industry and/or for micro-mechanical purposes. Easily matched to multiple tasks without over-qualification or demanding too much space.
Patent DE-4106705-A1 (DE)
Title: Insulation stripping tool for cables - has heated blade with profiles to suit different cables
Inventor: GRUBER BRUNO
IPC: H02G1/12
Filed: 1991-03-02
Abstract: The removal of plastic insulation from the wires of an electrical cable is achieved using a heated blade (1). The blade has a series of cut out sections and projections that are sharp enough to penetrate the insulation when heated. The blade may be mounted at the tip of heat conducting bar (14) that has a built in heating element (11). The unit has a handgrip section (10) with an electrical switch. An alternate has the blade mounted in a free standing unit. ADVANTAGE - Improved performance.
Patent DE-4109539-A1 (DE)
Title: Magnetic tape spool spigot for small drive unit - has cylindrical section with formed lugs to retain spool in position
Inventor: JIN HONG-JAE
IPC: G11B23/087
Filed: 1991-03-22
Abstract: The drive spindle arrangement for use in a small unit, such as a magnetic tape cassette, has a spigot (5) that fits onto a drive gear (4). The spigot unit has a stern with a hexagonal cross section and a main section (5b) that is essentially circular in cross section. The spigot has three formed `U` shaped projections (5a) equally spaced around the peiphery. These are of thin section and are flexible. The spool fits over the spigot and is retained by the flexible elements. ADVANTAGE - Simple design offering ease of assembly.
Patent DE-4110410-A1 (DE)
Title: New conjugates of poly:cation and protein
Inventor: BIRNSTIEL MAX L PROF DR
IPC: C12N1/15
Filed: 1991-03-29
Abstract: New protein-polycation complexes which form soluble complexes with nucleic acids (and their analogues) from human or animal cells are produced using proteins (I) that bind to the cell surface protein expressed by T cells.   Pref. the proteins (I) are (esp monoclonal) antibodies or fragments, directed against the cell surface protein, esp. bind to CD4 and contain a gp. 120-binding epitope, esp. from HIV-1 gp. 120 or a homologous protein from a related retrovirus. The polycation is pref. an opt. modified polyamine, an opt. modified histone or a synthetic homologous or heterologous polypeptide, esp. polylysine. The polycation has a charge of 20-500+, and the ratio of protein (I) to polycation is 10:1 to 1:10.   New protein (I) nucleic acid complexes are also claimed which may also include a non-covalently bound polycation, esp. one where the nucleic acid inhibits virus, including the replication and expression of HIV-1 and related retroviruses. The nucleic acid is e.g. in the form of a ribozyme opt. with a carrier RNA.
Patent DE-4112612-A1 (DE)
Title: Integrated semiconductor circuit with wo voltage reception pads
Inventor: OHBAYASHI SHIGEKI
IPC: H03K19/086
Filed: 1991-04-17
Abstract: The circuit comprises a first reference potential generator (5) near the first pad (2), from which is supplied with a voltage by a connecting link (4). Several second reference potential generators (6a,b) are fed with the reference potential from the first reference generator over a second link (7). Group of logic circuits (10a-d) are provided for each second reference potential generator. Each logic circuit has a switching circuit for processing an input signal, using the second reference potential, supplied via a third link (8a,b), forming a logic threshold value. Each second reference potential generator is formed near the respective group of logic circuits for reducing the resistance of the third link.
Patent DE-4117939-A1 (DE)
Title: Library book storage method - uses identical stacked containers of e.g. dark-coloured plastic, extracted by unstacking from the top
IPC: B65D21/02
Filed: 1991-05-31
Abstract: The method stores printed matter, particularly books in a library. Several of these are enclosed in a container, and several containers of the same shape and dimensions are placed immediately adjacent to each other and stacked one above the other, forming a self-supporting structure. This is unstacked from the top in order to extract a particular container with book or document. The container can be of dark-coloured plastic, 31 x 31 x 24cm. high. This can be hermetically sealed, heat-insulated, and kept under pressure or vacuum, with physical or chemical means for moisture extraction. ADVANTAGE - Increased storage capacity per sq.m. floor space, and protection from damage and chemical action.