baber/WOPTO huggingface dataset:
Patent DE-3712821-A1 (DE)
Inventor: OKA YOUICHI
IPC: C07B61/00
Filed: 1987-04-15
Abstract: A method of producing diacetone sorbose by reacting L-sorbose with acetone in the presence of a ketal formation catalyst in acetone, which comprises: carrying out the reaction while continuously removing water generated in the reaction together with acetone and continuously adding to the reaction mixture dehydrated acetone of which water content is not more than about 100 ppm.
Patent DE-3716072-A1 (DE)
Title: Electromagnetically actuatable valve
Inventor: KUBACH HANS DIPL ING
IPC: F02M51/06
Filed: 1987-05-14
Abstract: In valves, the valve-closing body is to a great extent exposed to damage by wear and corrosion which leads to a shortening of the service life of the valve. In order to improve the service life of the valve, those parts of the valve subjected to wear and corrosion, such as the valve needle (6), the striking disc (10), the guide bore (16) and the valve seat surface (17) in the nozzle body (15), are provided with a wear-resistant and corrosion-resistant rigid molybdenum layer (44) which is thin and can subsequently be worked by means of diamonds, as a result of which extremely high precision and surface quality can be achieved. The coating can be used for all valves. <IMAGE>
Patent DE-3718736-A1 (DE)
Title: Video tape recorder
Inventor: MUELLER JUERGEN DIPL ING
IPC: G11B15/43
Filed: 1987-06-04
Abstract: In a video tape recorder, for rewinding the tape is passed over two sensing levers, on which tape-tension sensors are arranged. A first motor is provided for driving the taking-up reel and a second motor is provided for controlled braking of the feeding reel. For controlling the braking force of the second motor, the output signals of the two tape-tension sensors are superimposed, in particular added.
Patent DE-3719779-A1 (DE)
Title: Cutting shoe for stump drills
Inventor: SCHNEIDER HORST DIPL ING
IPC: A01G23/06
Filed: 1987-06-13
Abstract: The invention relates to a cutting shoe for stump drills, having a cutting sleeve positioned over the stump. Said cutting sleeve is driven into the ground in a rotary manner and is drawn out of the ground with the stump after the lateral roots have been severed. The aim of the invention is to increase the efficiency when uprooting stumps. The object of the invention is to cut through lateral roots of a stump which are embedded in the soil. According to the invention, the cutting teeth of the cutting shoe are configured as double teeth, comprising two mutually symmetrical half-teeth with an arcuate or wedge-shaped undercut.
Patent DE-3722019-A1 (DE)
Inventor: SAUER HANS
IPC: H01M4/88
Filed: 1987-07-03
Abstract: In an electrically heated vibratory screw conveyor, manganese carbonate (MnCO3. x H2O) is thermally decomposed at about 500 DEG C to give the abovementioned manganese oxide catalyst which is then processed by dry, intensive mixing with a carbon-containing conductivity agent (carbon black, graphite, activated carbon) and PTFE as binder to give a highly active electrode mass which can be rolled into a carrier net of Ni or Ag. A two-stage mixing process is particularly advantageous in which the catalyst powder is initially premixed with only a little conductivity agent and binder, compacted and granulated. In a second mixing step, the granules are combined with the larger remainder of the intended quantity of conductivity agent and binder. The finished gas diffusion electrode has a biporous structure of hydrophilic and hydrophobic pore channels, which structure is highly advantageous for transport processes and the electrochemical conversion. The electrode can be used in fuel cells, chloro-alkali electrolysis cells and atmospheric oxygen cells.
Patent DE-3726241-A1 (DE)
Title: Jet steering system for hydrojet propulsion
Inventor: KUSAN KRISTIAN DIPL ING
IPC: B63H11/117
Filed: 1987-08-07
Abstract: Known jet steering systems for hydrojet propulsion are complex, do not provide the ship with good stability of motion at low speeds, and require large steering forces. The jet steering system according to the invention is simple, provides good stability of motion, because only one rudder is located in the propulsion current and is designed so that large steering forces are balanced. <IMAGE>
Patent DE-3726828-A1 (DE)
Title: Popular entertainment football pitch with movable goalkeeper and automatic shot power display
Inventor: JIRKU HEINZ
IPC: A63G33/00
Filed: 1987-08-12
Abstract: The invention relates to a popular entertainment football pitch with a movable goalkeeper and automatic shot power display which can be erected at moderate cost and has a high entertainment value. <IMAGE>
Patent DE-3727653-A1 (DE)
Title: Spot removers and their use for cleaning felt
Inventor: KLEEMANN STEPHAN DR
IPC: C11D3/20
Filed: 1987-08-19
Abstract: The present invention relates to spot removers for cleaning felt, consisting of a ketone-containing organic solvent and of a surfactant, and to their use.
Patent DE-3730578-A1 (DE)
Title: Low-pass filter
Inventor: LECHLER SIEGFRIED ING GRAD
IPC: H03H7/06
Filed: 1987-09-11
Abstract: In a low-pass filter for limiting the bandwidth of a signal containing digital information, a low-pass filter (1) being formed from a plurality of coils (4, 5) arranged in the longitudinal direction and of a plurality of capacitors arranged in the transverse direction, resistors (13, 14, 15) are connected in series with the capacitors (7, 8, 9). It is possible, in addition, to connect in series with the low-pass filter an all-pass filter (2) having a frequency-dependent propagation delay time and/or a transmitting element (3) having an all-pass component and a high-pass component (Fig. 1). <IMAGE>
Patent DE-3730758-A1 (DE)
Title: Longitudinally divided sealing element for sealing the ridge of tiled pitched roofs
Inventor: KNOCHE ALFONS
IPC: E04D1/36
Filed: 1987-09-12
Abstract: In the case of such sealing elements which are made with overlapping both of the corresponding sub-pieces and of the elements which follow one after the other in the longitudinal direction of the ridge, there is the problem of material accumulation, in particular in the overlapping region of the elements following one after the other in the longitudinal direction of the ridge. This is counteracted in that the border regions (112, 112a), overlapping above the ridge batten, of the sub-pieces (11, 11') of the sealing elements (1, 1', etc.) are of a weaker configuration than the other regions of the sub-pieces (11, 11'). In this manner, the material accumulation, when laying such elements, remains restricted in the longitudinal direction of the ridge, even in the overlapping region. <IMAGE>
Patent DE-3731746-A1 (DE)
Title: Device for optically multiplying points, lines, areas, bodies or the like
Inventor: NEICKEN OLIVER
IPC: G02B27/08
Filed: 1987-09-22
Abstract: The invention is based on the object of creating a device for optically multiplying points, lines, areas, bodies or the like, which is not only constructed and can be handled in a simple manner but in addition has a relatively high optical effect of depth which is several times the actual depth of the device. According to the invention this is achieved by the device having a housing whose front wall consists of a semitransparent mirror (1) and whose back wall consists of a mirror (2), and being equipped with at least one light source (4) which is assigned to the points, lines, areas, bodies or the like to be optically multiplied. The points, lines, areas, bodies (3) or the like to be optically multiplied are arranged in the housing and the light source (4) associated thereto is provided, laterally therefrom, in the housing (Figure 1). <IMAGE>
Patent DE-3735574-A1 (DE)
Inventor: RUF ERICH DR
IPC: C03C17/25
Filed: 1987-10-21
Abstract: The preparations contain tin(IV) chlorides optionally containing organic groups and contain tin(II) fluoride as the only dopant. The preferred preparation comprises
 from 30 to 89% by weight of tin(IV) chlorides optionally containing organic groups,
 from 1 to 5% by weight of tin(II) fluoride,
 from 10 to 55% by weight of a polar organic solvent and
 from 0 to 10% by weight of water. 
<??>The preparations according to the invention are simple to handle industrially and do not contain any aggressive or toxic compounds. Their constituents are readily accessible, related and inexpensive chemicals, but nevertheless allow the production of high-quality surface coatings on glass or glass ceramic.
Patent DE-3737403-A1 (DE)
Inventor: NONNENMACHER GERHARD DIPL ING
IPC: F04C2/08
Filed: 1987-11-04
Abstract: The hydraulic gear machine exhibits two gears (10,11) meshing in external action, which exhibit a non-evolute and noncycloidal tooth system. The tooth system is characterized in that the line of action (E) exhibits at the pitch point (W) a small angle of action, 6 DEG for example, which increases with the distance of the action from the pitch point. The increase in the angle of action is kept so slight that the undercut at the tooth flank just does not reduce the overlap to values below 1. By these measures the ratio of delivery volume to structural volume of such gear machines can be definitely improved whilst maintaining a favourable number of teeth. <IMAGE>
Patent DE-3737475-A1 (DE)
Title: Radiant heating element for cooking appliances
Inventor: GOESSLER GERHARD DIPL ING
IPC: H05B3/74
Filed: 1987-11-05
Abstract: A radiant heating element has two bright radiators, running parallel to one another, and two normal heating resistors. At least one of these runs approximately annularly along the edge of the surface capable of being heated by the radiant heating element. A second existing heating resistor, which may, if necessary, be arranged in the central region between the two bright radiators, has a lower electric power.
Patent DE-3741023-A1 (DE)
Title: Textile product with electrically conductive insert
Inventor: WUERTENBERGER FRITZ
IPC: A61N1/14
Filed: 1987-12-03
Abstract: A textile product, such as in particular a seat cushion (10), seat cover or the like, has an insert (16) made of electrically conductive material to prevent electrostatic charging. <IMAGE>
Patent DE-3800279-A1 (DE)
Title: Apparatus for the spray-coating of workpieces with colours (paints)
Inventor: STUEMPFIG G FRITZ
IPC: B05B13/02
Filed: 1988-01-08
Abstract: Published without abstract.
Patent DE-3803048-A1 (DE)
Title: Motor vehicle with a trailer device
Inventor: WEINMANN KLAUS DIPL ING
IPC: B62D53/08
Filed: 1988-02-02
Abstract: Motor vehicle having a vehicle frame (12), a front and a rear axle (16), a body (14) which extends to the rear over the rear axle, and a trailer device which is designed as a fifthwheel coupling part and in the region of the rear axle (16) is arranged on the vehicle frame (12) in a shaft-like compartment (22) which extends transversely over the frame and at the rear as well as at the sides has an opening for a swan-neck-type fifthwheel coupling part (28) on the trailer. <IMAGE>
Patent DE-3815632-A1 (DE)
Title: Process for melting ash and other ceramic materials having harmful constituents
Inventor: DIRKS FRIEDRICH
IPC: G21F9/32
Filed: 1988-05-07
Abstract: A process for melting ash and other ceramic materials having harmful constituents, such as, for example, radioactive or toxic materials as residues from an incineration plant having downstream waste gas purification, in which the heat energy contained in the flue gases downstream of the incineration plant itself is used directly for melting the ash or the incineration residues. In an apparatus for carrying out such a melting process, there is present in the flue gas line of an incineration plant, directly downstream of the latter, a melt pipe 8 taking up the residues 19, which pipe has the hot flue gases 4 flowing around it. <IMAGE>
Patent DE-3817274-A1 (DE)
Title: Cable with high tensile strength layered sheath
Inventor: NIENHAUS FRANK
IPC: H01B7/18
Filed: 1988-05-20
Abstract: In a cable with a core and a high tensile strength layered sheath comprising an aluminium mantle, arranged atop the core and formed from a longitudinal band, and an outer mantle, it is proposed that the aluminium band (4) is coated on the outer surface with polyethylene (PE) and encloses the core with the strands (2, 3) overlappingly. The aluminium band (4) has applied to it a tension-relieving element which has a coating of polyvinyl acetate (PVA) and which, in the course of the extrusion of the sheath, adheres to the band and to the other components. <IMAGE>
Patent DE-3819378-A1 (DE)
Title: Mangle roller with a textile covering
Inventor: SCHMITZ WERNER ERICH
IPC: D06F83/00
Filed: 1988-06-07
Abstract: In a mangle roller with a textile covering, the textile covering, before the start of use, has a thickness differing over the width. It has a greater thickness in the laundry run-through regions. During use, this increased thickness is reduced after a short running-in time, so that a uniform thickness of the covering over the entire roller width is obtained.
Patent DE-3825329-A1 (DE)
Title: Device for heating up the washer fluid of a washer system of a motor vehicle
Inventor: BAUER DIETER DIPL ING
IPC: F28F3/12
Filed: 1988-07-26
Abstract: In the case of a device for heating up the washer fluid of a washer system of a motor vehicle, in a container which holds the washer fluid there is arranged a heat exchanger which is connected by an inflow and an outlet to the coolant circuit of a combustion engine. The heat exchanger contains at least one extruded multi-chamber tube, the chambers of which are coupled by means of end pieces to a continuous guide between the inflow and outlet.
Patent DE-3833534-A1 (DE)
Title: Regulating method and device for operating a train consisting of a farm tractor and of a plough
Inventor: STROPPEL ALFRED PROF DR ING
IPC: A01B69/04
Filed: 1988-10-01
Abstract: In a regulating method, the forces in the lower links of the mounting device for the plough are used for adjusting the ideal control point of the plough relative to the furrow. However, the processing of these operating variables results in appreciable errors which partially cancel out again the success achieved with the known method. The intention is, therefore, to provide a method and a device of this type which works more accurately. For this purpose, the normal force (N) between the bearing point (26) of the plough (13) and the wall (24a) of the furrow (24) is used as an operating variable, and the control point (F) of the plough (13) is shifted away from the furrow (24) in the case of a normal force (N) below the limit value (Ng), but towards the furrow (24) in the case of a normal force (N) above the limit value (Ng).
Patent DE-3833796-A1 (DE)
Inventor: REBHAN DIETER ING GRAD
IPC: E02D31/00
Filed: 1988-10-05
Abstract: A process and apparatus are provided for cleaning contaminated earth. The contaminated soil is first frozen using freezer boxes which are placed on the surface of the ground to be frozen. A refrigerant, preferably liquid nitrogen, is then introduced into the box until the soil is frozen to a desired depth and temperature. The frozen soil containing pollutants is then removed and placed in sealed containers for optional further treatment.
Patent DE-3834780-A1 (DE)
Title: Dumping jib of a stacker
Inventor: WOCKA NORBERT
IPC: E21C47/04
Filed: 1988-10-12
Abstract: The invention relates to a stacker jib for further guiding the mined material brought in by means of a stacker. The jib according to the invention is formed from segments (1) consisting of longitudinal frameworks connected to one another in an articulated manner. The cross-section of the individual segments (1) has the form of a triangle. The segments (1) are suspended on supporting cables (10) on swivellable masts (3, 9), the first mast (3) being fastened on the frame (2) of the stacker, and the second mast (9) being fastened at the end of the third segment (1). The first three segments (1) have lateral beams (4, 5) at the end. The ends of the lateral beams (4, 5) are connected to one another via outer cables (8) which are fastened, on the one hand, on the segment (1) situated the furthest forward and, on the other hand, on the frame (2) of the stacker. The jib has six segments (1). The lateral beams (4) or (5) have the form of a triangle the baseline of which is fastened on the segment (1) and the apex of which is arranged outside. <IMAGE>
Patent DE-3837654-A1 (DE)
Title: Arrangement of screws
Inventor: STOLL KURT DIPL ING
IPC: B25B23/04
Filed: 1988-11-05
Abstract: The invention relates to an arrangement of screws having a shank (3) and a head (4) with an end surface set against the shank and with a circumferential surface which adjoins said end surface and is arranged between the end surface and the shank, which screws are arranged, in the same direction as one another, such that they follow one after the other in a row and are fitted together to form a continuous, single-piece screw strand, screws which are adjacent in the longitudinal direction of the strand being integrally formed one on the other such that they can be separated from one another by means of a predetermined separating point (14). The invention provides that the predetermined separating point, located on the screw head (4), is arranged next to, or on the border of, the tool-attachment portion and, in this arrangement, in the transition region between the end surface (5) and the circumferential surface (6) or between the circumferential surface (6) and the shank (3). <IMAGE>
Patent DE-3837669-A1 (DE)
Inventor: KLEHR NIKOLAUS W PROF DR MED
IPC: A61K35/36
Filed: 1988-11-05
Abstract: To summarise, it is proposed to subject the extra-corporal treatment of skin cells and fibroblasts to patent protection, where no medical or ethical factors are neglected when every citizen is at liberty to apply the substances directly. Patent protection is sought only for the combined practice of reintroducing bodily extra-corporal multiplied material together with effective substances or applying them to the organism in the form of a finished product. The advantage of this combination is that it contains no allergens, has reduced side-effects and the production activity can be localised in contrast to administering pure effective substances.
Patent DE-3839423-A1 (DE)
IPC: B23B51/10
Filed: 1988-11-23
Abstract: Described is a deburring tool having cutting blades for deburring the edges of through-bores on either side, having at least one cutting blade, consisting of a rectangular, edge-shaped cutting body having conically running cutting edges, undercut, sharpened flanks and an end bearing face on the cutter head for bearing against the inner surface of a bore. 
<??>The object of the invention is to make bevels to an accurately defined size on the front and rear side of through-bores by means of a deburring tool of the said type. 
<??>To this end, provision is made for a sliding portion deviating from the angle of the cutting edge to be formed in the direction of the axially outer part of the cutting blade, which sliding portion, furthermore, merges into a sliding radius formed at the end face.
Patent DE-3844622-A1 (DE)
Title: Mattress base
Inventor: ASCHWANDEN FRANZ
IPC: A61G7/057
Filed: 1988-08-12
Abstract: Mattress base having a frame which is spanned in the transverse direction by a multiplicity of slats which are supported on the frame at their two ends in each case via at least one device which runs in the longitudinal direction of the frame, holds a plurality of slat ends and yields in the direction of loading of the mattress base, the yielding device consisting of triangular components (26) which are held on the frame (1) between the slat ends of two slats so as to be pivotable in each case about their vertices (27), the side faces of the triangular components (26) forming the supporting faces for the slat ends and the triangular components (26) attached to the frame end being fixedly arranged. <IMAGE>
Patent DE-3905969-A1 (DE)
Title: Electromagnetically actuable valve and heating circuit for the cab of a motor vehicle containing such a valve
Inventor: KARCH RUDI
IPC: B60H1/00
Filed: 1989-02-25
Abstract: An electromagnetically actuable valve (12) for flowrate control contains a through-opening which can be closed off by a sealing element (28) which acts magnetically and is movably arranged in the throughflow channel. The sealing element (28) is located in the area of influence of a solenoid (32). Its position is changed when the solenoid (32) is excited, leading to a change in the throughflow cross-section of the valve (12). In order to amplify the magnetic force, an iron yoke can be arranged in the area of the solenoid (32).   The valve is particularly suitable for use in a heating medium circuit of a spatial heater for the cabs of motor vehicles. <IMAGE>
Patent DE-3916602-A1 (DE)
Title: Two-part connector for optical waveguides
Inventor: LAPPOEHN JUERGEN
IPC: G02B6/38
Filed: 1989-05-22
Abstract: In a connector for optical waveguides, having a device for automatic axial alignment of the connector pins (2, 3), which are primarily resiliently mounted in the longitudinal direction (L) of the housing in a sleeve (1) or the like and hold the fibre ends (E), it is preferably envisaged to provide the guide sleeve (1), arranged in the connector housing (8), with longitudinal slots (1a) on the circumference and a clamping cone (4) seated thereon, and to arrange in the socket housing (9) a clamping sleeve (5) which, during the insertion and after the end faces (2a, 3a) of the connector pins (2, 3) are in position, aligns the latter in the longitudinal direction (L) practically without mutual radial offsets with respect to one another. <IMAGE>
Patent DE-3919693-A1 (DE)
Title: Solar cell with overhanging dielectric layer and method for its production
Inventor: GREEN MARTIN ANDREW
IPC: H01L21/74
Filed: 1989-06-16
Abstract: The present invention relates in detail to a method for producing a semiconductor substrate surface in order to produce a solar cell. When applying a conducting metallic contact onto a solar cell, for example by metal plating, the problem arises that the metal spreads out over the surface of the cell to an undesired extent and thereby shades the surface of the cell, causing a considerable shading loss. The present invention prevents this problem by the use of a production process during which spreading of the metal application layer out over the surface of the cell is reduced. The process involves the formation of a layer of a dielectric material on the surface of a substrate surface, removal of a region of the dielectric layer, in order to expose the substrate surface and, finally, removal of the substrate surface in this region by an operation so that the adjoining edges of the dielectric layer are eroded underneath, so that the dielectric layer in this region juts out over a hollow in the substrate surface. The metal which is applied during a subsequent metal application step will be prevented from spreading out over the surface by the overhanging dielectric layer. The overhanging layer can also be used for ... alignment of the ... in the hollow ... Original abstract incomplete.
Patent DE-3921084-A1 (DE)
Title: Electrically-driven diaphragm vacuum pump or pressure pump - has cage around electromagnet coil through which central armature shaft extends between two vibratory spring plates
Inventor: RICHTER SIEGFRIED DIPL ING
IPC: F04B43/04
Filed: 1989-06-28
Abstract: The diaphragm (3) in its central holder (2) is driven by a vibratory armature electromagnet. The coil (16) is enclosed concentrically in a peripherally interrupted ferromagnetic cage (19) forming two pole rings (25,26) sepd. by an annular gap (27). Two vibrating springs (42,43) fixed to bearing surfaces (61,62) of the housing (28,29) extend from opposite sides of the axis (9) of the system to equal distances, on either side of the cage (19) at the same spacing (b). ADVANTAGE - A common vibratory armature magnet consuming little energy is equally efficient at high vacuum and pressure, undergoes little wear and has a long lifetime.