baber/WOPTO huggingface dataset:
Patent DE-3939998-A1 (DE)
Inventor: RHEINBERGER VOLKER DR
IPC: A61K6/00
Filed: 1989-12-02
Abstract: A description is given of a method for optically distinguishing a dental material, applied to a substrate, from natural teeth, artificial teeth or parts thereof, in which 0.00001 to 1 % by weight of a fluorescent material is worked into the dental material and has an absorption maximum in the waveband from 360 to 480 nm and a fluorescence maximum in the waveband from 480 to 600 nm, the dental material applied to the substrate is irradiated by a light source which emits light with a wavelength in the range from 360 to 480 nm, and viewing is done through an optical filter which at least partially filters out light having a wavelength in the range from 360 to 480 nm. Furthermore, a dental material for use in the method is described.
Patent DE-4000515-A1 (DE)
Inventor: COLLINS MICHAEL J
IPC: G01N31/12
Filed: 1990-01-10
Abstract: An apparatus for analyzing materials for ash content includes a walled chamber 118 which retains microwave radiation therein, a source of microwave radiation, such as a magnetron, for radiating onto chamber contents, and an ashing furnace 117 in the chamber, which includes a heat resistant wall 119, 121 of low thermal conductivity, which is transmissive of microwave radiation, and a microwave absorptive material 127, e.g. of silicon carbide, which is capable of being heated by microwave radiation to an ashing temperature. The furnace includes a passageway through it for air and gaseous combustion products and a door 123 in a front wall thereof. Air flow helps to cool the furnace wall exterior. The operation of the furnace and the ashing temperature are preferably controlled by a combination of a temperature sensor, preferably a thermocouple, and a control mechanism 137 which turns a magnetron on and off, respectively, as the temperature in the furnace cavity falls below or rises above that desired during use of the apparatus in the ashing process. Also claimed are an ashing container 129, figs 7-9 which is heat resistant, walled, light weight, microwave transmissive and porous, and of quartz microfibers that are held in desired walled container form, and a process for manufacturing such container by shaping a non woven sheet about mandrel (145). Cereals, polymers, sludges, sediments, coal, paper and building materials may be analysed. <IMAGE>
Patent DE-4001240-A1 (DE)
Title: Inertial reel for seat belt - with controlled action lock to operate preset belt movement
Inventor: MORI SHINJI
IPC: B60R22/38
Filed: 1990-01-18
Abstract: The safety belt reel has a toothed locking wheel (38) and an inertially operated locking catch (70). A second toothed wheel (58) is mounted coaxial to the first and is driven from the belt reel shaft (20) by a friction coupling. The friction forces are arranged to ensure the locking catch is retarded in its action. The locking catch only operates when the belt has been moved a set distance. This prevents premature locking of the reel when the belt is moved e.g. on a bumpy ride.
Patent DE-4004293-A1 (DE)
Title: Dubbing agent for leather
Inventor: PIEPER FRIEDRICH
IPC: C14C9/02
Filed: 1990-02-13
Abstract: The invention concerns leather-oiling agents, a process for producing leathers with good water-resistance characteristics and the use of sulphonated phosphoric acid ester salts for producing leathers with good water-resistance characteristics.
Patent DE-4012579-A1 (DE)
Title: Electric dishwasher cleaning agent container - has closure spring made of memory metal for opening at specific temp.
Inventor: HASSELMAN ARRIS
IPC: A47L15/44
Filed: 1990-04-20
Abstract: The container is provided by an opening in the front door of the dishwasher and a cooperating pivoted cover (16) which is held closed at a normal temp. and which is opened at a given higher temp, to release the cleaning agent. The cover (16) is acted on by a spring made of a memory metal, with 2 arms (20,21) attached to the cover (16) and the container (10, 11) rotatable about a common axis (14, 15). The two arms (20, 21) lie adjacent one another in the closed position of the cover (16) and spring apart when the cover is opened at the release temp. USE - For automatic release of cleaning agent at correct point in cleaning cycle.
Patent DE-4013621-A1 (DE)
Title: Electronic multiplier circuit with pulse counter having 3 outputs - separately adds partial products to total intermediate product count using shift register movable in one direction
Inventor: MERKLE PAUL
IPC: G06F7/52
Filed: 1990-04-27
Abstract: An electronic multiplier circuit adds partial products individually to an intermediate overall product number and its result shift register has only one shift direction. A poulse counter (11) with three outputs is used which consists only of four simple flip-flops. Each main cycle is fully completed and the number of main cycles is limited to the number of multiplier numbers. ADVANTAGE - Multiplier circuit of P 40 11 488 is improved replacing pulse counter having four outputs by one with only three.
Patent DE-4020730-A1 (DE)
Title: Mechanical re-stacking for sheets of paper - removes each topmost sheet from delivery unit before forming new stack
IPC: B65H31/34
Filed: 1990-06-29
Abstract: To improve the stacking quality each top sheet of the original stack (5) is removed. A succession of individual sheets not covering each other is formed which are set down on each other with reciprocal alignment in the form of the new stack (19). The successive sheets can be weighted down through  gravity or inertia forces, through vibration or through a vacuum. USE/ADVANTAGE - Mechanical re-stacking is now possible.
Patent DE-4023808-A1 (DE)
Title: Cross bar for controlling string puppets - has handle with leg spinner and body balance for graceful movements
Inventor: MAYENBERGER FRANZ
IPC: A63H3/14
Filed: 1990-07-27
Abstract: The cross bar has a rod-like handle with several cross bars for attaching the strings. On the handle (1) in the action range of the thumb and index finger of the control hand there is a leg spinner (4) mounted to swivel about a downwardly dropping axis (3). At the lower end part of the handle a body balance (14) is hung up, movable in its centre. The handle has between the leg spinner and the body balance a forwardly aligned extension arm (8) on which the head and hands of the puppet are  hung. The leg spinner pref. has grip holes (5) for operation with the thumb and forefinger. ADVANTAGE - Good graceful movements can be reproduced.
Patent DE-4024151-A1 (DE)
Title: Printing cylinder prodn. with seamless photopolymer relief - using water-in-oil emulsion for smoothing and/or development, avoiding swelling and shrinkage
Inventor: TELSER THOMAS DR
IPC: G03F7/18
Filed: 1990-07-30
Abstract: Prodn. involves: (a) seamless application of a photocopying element with a photopolymerisable layer to the surface of a cylinder; (b) buffing the surface of this layer; (c) smoothing the buffed surface by (c-1) treatment with an organic solvent (mixt.), in which the layer is soluble or dispersible, and/or (c-2) filling the buffed relief with a thermoplastic binder, and/or (c-3) applying heat and/or pressure; (d) selective exposure with actinic light; and (e) development by washing out the unexposed areas with a suitable solvent (mixt.). The novelty is that a water-in-oil emulsion (I) is used in stages (c-1), (c-2) and/or (e). (I) contains a finely dispersed aq. phase and a continuous nonflammable or hardly flammable and/or high boiling organic phase (II) in 90:10 to 10:90 vol. ratio.
Patent DE-4028091-A1 (DE)
Title: Car air conditioning radial-flow fan - has annular gap on housing suction side for direct coupling of suction and pressure chambers
Inventor: KILIAN JOERG DIPL ING
IPC: B60H1/00
Filed: 1990-09-05
Abstract: The radial flow blower has a bladed impeller in a spiral housing (1). One of the openings joining the pressure to the suction chamber has an annular gap (2) on the suction side. The gap is limited by an inner (5) and an outer edge (6), with the inlet cross section small w.r.t. the cross section of the air inlet and outlet opening. USE/ADVANTAGE - For car heating and/or air conditioning, with steep chracteristic in manual operation, but with flat characteristic in critical range.
Patent DE-4033566-A1 (DE)
Title: New phenyl ether cpds. - useful in treatment of acne, psoriasis and dandruff
Inventor: MOELLER HINRICH DR
IPC: C07C69/734
Filed: 1990-10-22
Abstract: Bi- and tricyclic phenyl ether derivs. of formula (I) are new. In (I) R1 = H or 1-4C alkyl; n = 0 or 1; m = 0-4; R2 = (a) opt. mono- or polyunsatd. bicyclic (x.y.z) ring system, opt. substd. by a cycloalkyl, aryl, alkylaryl or opt. branched, opt. mono- or polyunsatd. alkyl; or (b) tricyclic ring system contg. up to 20C atoms (opt. gps. replaced by O or S, and opt. substd. by a cycloalkyl, aryl, alkaryl or opt. branched, opt. mono- or polyunsatd. alkyl); x,y are greater than 1; Z is greater than 0; and x+y+z is nor more than 20. USE/ADVANTAGE - (I) are antiseborrhoeic agents useful for treatment of acne, psoriasis, dandruff, etc.. (I) are capable or normalising excessive secretions from sebaceous glands and have good tolerability to skin and mucous membranes. Topical compsn. contain 0.005-1 wt.% of (I) in a carrier.
Patent DE-4033740-A1 (DE)
Title: Revolution rate sensor output signal prepn. circuit - for vehicle wheels, contains partic. simple and eligable triggering circuit hysteresis adjustment stage
Inventor: FEY WOLFGANG
IPC: B60T8/172
Filed: 1990-10-24
Abstract: The circuit (1-20) prepares the output signal of a revolution rate sensor, esp. for vehicle wheels. It contains a trigger circuit with controllable hysteresis or trigger threshold and circuits which determine a coupling factor giving the sensor signal amplitude when multiplied by the frequency corresp. to the revolution rate and for adjusting the trigger circuit hysteresis according to the coupling factor. Thresholds for the sensor output signal are defined for determining the coupling factor and adjusting the hysteresis. With the vehicle being driven the coupling factor is determined when the frequency corresp. to the wheel rotation rate reaches the threshold values. USE/ADVANTAGE - The circuit for adjusting the hysteresis of the triggering circuit is partic. simple and reliable.
Patent DE-4034281-A1 (DE)
Title: Embossing tool preventing spread of surplus material - uses an identical and additional lower die without any free surfaces to shape the upper die
Inventor: HAEGE GEORG
IPC: B29C33/38
Filed: 1990-10-27
Abstract: For the embossing tool, to give structured and/or relief embossing to thermoplastic film material, an additional lower die is used, without any free surfaces, to shape the upper die which is identical to the lower die to be used for embossing. - The upper die is pref. composed of a fibre-reinforced plastics material. - To shape the upper die, a lower die is inserted into the press together with the upper die material, and the shape of the upper die is produced by the application of heat and pressure. When the press is opened, the lower die used to shape the upper die is replaced by a lower die with identical embossing patterning. During or after shaping, the alignment of the upper die is adjusted against the lower die position. Location holes are provided for the upper and lower dies, for the insertion of locating pins.
Patent DE-4040912-A1 (DE)
Inventor: KUCIEL EUGENIUSZ DR
IPC: B01D53/34
Filed: 1990-12-20
Abstract: In a process for selectively separating HF from a gas containing HF and HCl and possibly other components, in which the gas is treated with a washing fluid at least to wash out the HF and the fluorine separates out from the CaCl2-CaF2-HCl-H2O system as CaF2 and is extracted, in order to treat an exhaust has gas from an incineration plant, especially a rubbish incineration plant, the gas (2; 25) containing HF and HCl is washed out of the exhaust gas (2) of an incineration plant with an aqueous CaCl2 solution (4; 27) with a superstoichiometric CaCl2 content in relation to the fluorine content of the solution and a gas containing HCl (6; 29) is extracted from the wash.
Patent DE-4102944-A1 (DE)
Title: Sill for bodywork of private car - has increased cross=sectional area in region adjoining centre pillar
Inventor: STOCKMAR CLAUS
IPC: B62D25/04
Filed: 1991-01-31
Abstract: A private car with four doors has a sill (2) which extends under the two doors on each side of the bodywork. The sill has a U-shaped cross-section and the depth of this cross-section is increased in that part (10) of the sill which adjoins the centre pillar (4) and lies below the front door. The length of this portion of increased cross-section is approx. equal to one third of the overall length of the sill. This feature increases the capability of the bodywork to resist lateral impact in the event of a crash. USE/ADVANTAGE - Motor vehicle bodywork with increased crash resistance.
Patent DE-4107610-A1 (DE)
Title: Translatory measuring arrangement for displacement length of two relatively movable objects - uses scale carrier band circulating on runners attached to one object and fixed scale sensing unit on other object
Inventor: FREITAG HANS-JOACHIM DR ING
IPC: G01B5/00
Filed: 1991-03-09
Abstract: The arrangement for measuring the displacement distance between two objects consists of a flexible scale carrier with scale markings coupled to one object and a marking sensing device coupled to the other. The scale carrier is passed over two rollers (5, 6) with parallel axes (7, 8) perpendicular to the displacement direction and coupled to the first object (4). The scale carrier (1) is coupled to the second object (13) by a drive element (12). The sensing device (3) is mounted on the first object in a stationary position. USE/ADVANTAGE - Esp. for use in machine tools, length and coordinate measurement machines and in automation technology. Low cost band material can be used, a short installation length achieved and a large external drive tolerance allowed.
Patent DE-4114566-A1 (DE)
Inventor: ROLFF RANDOLF PAUL
IPC: F16C39/06
Filed: 1991-05-04
Abstract: The invention relates to a process for starting a machine fitted with a rotor on magnetic bearings and a circuit for implementing said process; in order to automate this process, the procedure is such that the fact that an axial stop bears on the rotor at rest and the correct position of the rotor when running -- its unstable equilibrium -- is about half a possible total travel of the rotor away from the momentary rotor stop position is used as information in order to apply electric power to the deflection coil in such a way that the rotor assumes its correct position virtually independently of the offset and that initially one of the two possible rotor stop positions is assumed to be given and an attempt is made to stabilise the rotor at about half of the possible total travel of the rotor from the assumed rotor stop position.
Patent DE-4118819-A1 (DE)
Inventor: LAWRENZ-STOLZ JOERG
IPC: H01S3/109
Filed: 1991-06-07
Abstract: In order to generate blue light by means of a laser, a laser diode pumping light source (7, 8, 9) is used in a tuneable laser (1) to couple pumping light into a birefringent, nonlinear crystal (5) via an input mirror (3). By setting the inclination of the crystal (5), or with the aid of a temperature-regulating device (6) for the crystal, the majority of the pumping light is absorbed in the crystal (5) - given suitable polarisation of the pumping light - while the remainder is available for frequency mixing of the fundamental of the laser and the pumping light. Given a fundamental, e.g. 1064 nm and pumping light at a wavelength of, e.g. 806 nm, blue light at a wavelength of, e.g. 459 nm is coupled out via an output mirror (4). 
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Patent DE-4122241-A1 (DE)
Title: Domed filter for medical and technical applications - comprises membrane and hydrophobic weave shaped by underlying core, with plastic ribs on both sides of filter face for strength
Inventor: FUERST RAINER
IPC: B01D46/10
Filed: 1991-07-05
Abstract: Filter has an effective filter area made of a hydrophobic membrane or a very densely woven hydrophobic material with a precisely defined gauze size secured in a plastic frame. The membrane and hydrophobic weave respectively are secured within the plastic frame using the injection moulding process. The membrane and hydrophobic weave are dome shaped and the dome shape is achieved by means of the underlying core. Plastic ribs are fabricated by the same process on both sides of the domed filter face to provide strength. USE/ADVANTAGE - The domed filter is suitable for technical and medical applications and can be mfd. by a single simple technique. The filter can easily be made in a wide variety of size
Patent DE-4124836-A1 (DE)
Title: Demodulation of FSK-signals for high rate data transmission - using at least two IIR-filters which can be set at response time zero
Inventor: NAGEL DIETER DR ING
IPC: H04L27/148
Filed: 1991-07-26
Abstract: An FSK (frequency shift keyed) signal, shown here with two frequencies, is demodulated passing the signal through a high pass IIR (infinite impulse response) filter (1) with a cut-off frequency between the two signal components. The filter is controlled by a clock signal l(n), which is synchronised to the data signal x(n). A switch in a clock c(n) allows a change in signal component and reinitialisation of the filter (1). A digital output b(n) is obtained. ADVANTAGE - Gigabit per second signals may be demodulated. Procedure may be extended to several channels.
Patent DE-4128357-A1 (DE)
Inventor: OESTE FRANZ DIETRICH
IPC: C07D487/22
Filed: 1991-08-27
Abstract: A process for the preparation of hollow molecules consisting of closed hexagonal and pentagonal networks, characterised in that, by pyrolysis of starting materials, hollow molecules are prepared which   a) contain carbon, boron and nitrogen as constituents of the hexagonal and pentagonal network and/or b) contain carbon, boron and nitrogen as constituents of the hexagonal and pentagonal network and in which molecular symmetry and molecular dimension parameters agree with those of hollow molecules provided with openings in the hexagonal and pentagonal network if these are employed as starting material constituents or which c) exclusively contain carbon as a constituent of the hexagonal and pentagonal network and in which molecular symmetry and molecular dimension parameters agree with those of hollow molecules provided with openings in the hexagonal and pentagonal network if these are employed as starting material constituents. t
Patent DE-4128552-A1 (DE)
Title: Supply of air to fluidised bed -  by using grid formed of pipes with nozzle openings in pipes
Inventor: HOELTER HEINZ DR ING
IPC: F23C10/18
Filed: 1991-08-28
Abstract: A fluidised bed combustion system, for a steam boiler or similar installation, is supplied with air through a system of horizontal pipes (1, 2) which are welded to each other to form a grid. The air flows out of the supply system through nozzle openings (3) in the underside of the branch tubes (2). The nozzle openings (3) are inclined at an angle of between 15 and 90 deg. to the horizontal in the downward direction. The preferred angle of inclination to the horizontal lies between 60 and 75 deg. in the downward direction. USE/ADVANTAGE - Air supply to a fluidised bed by an easily constructed pipework system.
Patent DE-4133319-A1 (DE)
Title: Coarse milled amorphous pptd. silicic acid - used in heat-sensitive recording media opt. together with finely-divided white pigment
Inventor: HAEHN REINHARD DIPL ING DR ING
IPC: B41M5/337
Filed: 1991-10-08
Abstract: Amorphous pptd. silicic acid (I) of particle spectrum 50-0.5 microns and are page particles dia. 4-10 microns is used as filler in the heat-sensitive layer of a heat-sensitive recording material. (I) is pref. combined with 0-50 (2-40) wt.% finely-divided white pigment (II), with the water content of the combination being 1-10 (2-8) at.%. (I) pref. has DIN 53199 oil absorption above 100 (esp. 100-250) ml/100g and a specific BET surface before 100 (esp. 30-80) m2/g. (II) is pref. an alkaline earth carbonate such as Ca- or Mg-carbonate, an alkaline earth hydroxide and/or an Al hydroxide. Prior to combination with (I), the (II) pref. has particle spectrum 100% below 25 microns and average particle dia. (d50) of 2-4 microns. Combination of (I) with (II) is pref. by milling the specified water content, pref. using a ball-, impact rotor-, stud-ring- or jet-mill. ADVANTAGE - (I) is easily obtd. by milling of commercially-available pptd. silicic acid of particle spectrum 100-1 microns and are page particle dia. 10-20 microns and so can be produced without the large amts. of conc. HCl required in the processes of EP-114747 or EP-135976
Patent DE-4138979-A1 (DE)
Title: Shape parameter encoder for object-oriented image signal encoding - encodes contour lines repeatedly using defined support points and requires less data for parameter transfer
Inventor: HOETTER MICHAEL
IPC: H04N19/527
Filed: 1991-11-27
Abstract: The encoder encodes contour lines of each object. Four support points on a contour line are defined, whose distances from each other or the edge of the image is a maximum.  The distances of points on the line from a straight line between the support points are measured. The point on the line at  a maximum distance, and a distance greater than a defined distance, from the straight line is defined.  The computation of distances and the definition of further support points is repeated until all point on the contour are not further than the defined distance from the straight lines. USE/ADVANTAGE- Enables further reduction of data quantity required for shape parameter transfer.
Patent DE-4200139-A1 (DE)
Title: New poly-1,1-tetra-methylene- 3,3,4,4'-tetra:methylene-pyrrolidinium salts - useful as viscosifier(s) and sacrificial agents in enhanced oil recovery
Inventor: BALLSCHUH DETLEF DR
IPC: C09K8/86
Filed: 1992-01-01
Abstract: Poly-1,1-tetramethylene-3,3',4,4' -tetramethylene-pyrrolidinium salts stated to be of formula (Ia) and (Ib), where units from (Ia) may be present in (Ib) and vice versa, are new. Where M = a cation; X = an anion; n and m = degree of polymerisation. Mixts. of (Ia) and (Ib) are prepd. by reacting tetraallylammonium chloride or bromide with 1-1.5 molar equivs. of a metal bisulphite (esp. NaHSO3) in an aq. medium at pH 5-10 under oxidising conditions, pref. provided by aeration. USE - (Ia) and (Ib) are useful in enhanced oil recover operations as water or brine viscosifiers or as sacrificial agents in surfactant flooding.
Patent DE-4205535-A1 (DE)
Title: Compression-spring regulating level of variable weight mounted on swing arms - is moved along track on frame dependent on load to keep level and natural frequency constant
Inventor: GERLACH RAINER DR ING
IPC: B60G17/02
Filed: 1992-02-24
Abstract: The vehicle suspension compensates for different weights and keeps body level and oscillation rate constant. A spring (F) regulates the level of a variable weight supported on swing arms (S), having a linear characteristic. The spring is fixed to the arm, and is moved along a track on the frame dependent on load, maintaining a constant level and natural frequency. The track can be straight or in a curve, and the arms can be used in a vehicle suspension system. USE/ADVANTAGE - Vehicle wheel suspension with variable spring rate, designed to deal with different loadings and vehicle weights. No maintenance required.