baber/WOPTO huggingface dataset:
Patent DE-3800466-A1 (DE)
Inventor: RUPPERT WOLFGANG DIPL ING DR I
IPC: C07C51/14
Filed: 1988-01-11
Abstract: 1. Process for the preparation of isobutyric acid or derivatives thereof by means of Koch synthesis from approximately stoichiometric amounts of propylene, carbon monoxide and optionally water or an alcohol, in liquid hydrogen fluoride as Koch catalyst, characterised in that the reaction mixture in a heat exchanger is maintained at a constant reaction temperature using an addition product of at least two of the above-mentioned substances as coolant in a sealed cooling circuit.
Patent DE-3805693-A1 (DE)
Title: Motor-vehicle emblem or similar body made of plastic
IPC: G09F7/00
Filed: 1988-02-24
Abstract: The invention relates to a motor-vehicle emblem or similar body made of plastic with an essentially flat or possibly slightly curved front surface which is continuous or has openings and with surrounding edge parts protruding therefrom. The body, in particular in top view, has a round, in particular circular basic shape and the edge parts are angled off via a radius approximately at right angles from the front surface and furthermore, at least the front surface is provided with a metallically shining coating. In order to provide a motor-vehicle emblem or similar body of this kind in which only the front surface and the outer end edge have a metallically shining coating, it is proposed that an embossed sheet (5), containing a metallically shining layer, be impressed onto the front surface (4) and that the edges (6) of the embossed sheet (5) be impressed such that they run over the radius in the transition portion (3) to the angled-off outer edges (2) of the body (1). <IMAGE>
Patent DE-3808961-A1 (DE)
Title: High-frequency (radio-frequency) damping device
Inventor: NORI HASSAN
IPC: H01R13/719
Filed: 1988-03-17
Abstract: The object of the invention is to produce a high-frequency damping device which needs no additional casing or additional plug terminals.   The solution to the problem resides in the fact that a printed circuit board (13) which carries a damping component (16) is arranged inside a coaxial plug (10). The fact that such plugs are needed in any case obviates the necessity for a separate shielding casing for the high-frequency damping device. A preferred field of application for the high-frequency damping device is the production of auxiliary damping for level matching in cable television systems. The drawing shows a coaxial plug with a printed circuit board contained therein, the latter carrying a high-frequency damping component. <IMAGE>
Patent DE-3811008-A1 (DE)
Title: Pressure control valve
Inventor: HOEHNE HEINZ
IPC: G05D16/06
Filed: 1988-03-31
Abstract: A description is given of a pressure control valve for a hydraulic system. The pressure control valve has, in a working space filled with the hydraulic medium and closed off from the environment by a spring-loaded diaphragm, a fixed intermediate wall, the single opening in which is penetrated by an only slightly smaller valve element for the closure of a return opening. The annular interspace serves as a restriction for the damping of diaphragm vibrations which cause the valve element connected to the diaphragm to vibrate as well and cause pressure fluctuations in the hydraulic system. <IMAGE>
Patent DE-3813981-A1 (DE)
Title: Pneumatic regulating element
Inventor: JURR RICHARD
IPC: F15B11/15
Filed: 1988-04-26
Abstract: In a pneumatic regulating element, a passage (12) with a non-return valve (13) is provided in a piston (2) separating a working chamber (5) from a spring chamber (7). This non-return valve (13) is designed in such a way that it is closed against the force of a restoring spring (8) during the stroke of the piston (2), but is positively opened upon reaching the end position tightening the restoring spring (8) and remains open during the entire return stroke. <IMAGE>
Patent DE-3815089-A1 (DE)
Title: Process and an apparatus for liquefying hot melt compounds
Inventor: HAMMER PAVEL
IPC: B29B13/02
Filed: 1988-05-04
Abstract: The invention relates to a process and an apparatus for liquefying hot melt compounds, in particular hot melt adhesives. For this purpose, a melting unit (1) with a storage tank (2), a pre-melt and main-melt tank (3, 4) and also a feeding and applying device (6, 11) is provided. The various heatable parts of the unit (3, 4, 10, 12, 13) are heated up simultaneously and dependently on one another, maintaining a predetermined maximum temperature difference. The specific heat outputs depend on the heating up of the least responsive part, usually the pre-melt tank (3). In the heatable parts of the unit (3, 4, 10, 12, 13) there are arranged thermocouples (18), which are connected to a control device (15), which controls the output of the heating elements (16) of the individual parts of the unit.
Patent DE-3817029-A1 (DE)
Title: Method and device for preparing the end surfaces of an optical fibre or of a group of optical fibres
Inventor: TIETZ WOLFGANG
IPC: G02B6/36
Filed: 1988-05-19
Abstract: The invention relates to a method for preparing the end surfaces of an optical fibre (LWL) or of a group of optical fibres for producing an optical coupling with a corresponding group of optical fibres. The content of faulty coupling operations is reduced in that, after a preparation, the end regions of the optical fibre(s) (5) are placed in a protective cover which is held in a clamping manner on the rear region of the optical fibre ends (6) and surrounds the front region of the optical fibres (5) at a distance from all sides. <IMAGE>
Patent DE-3818168-A1 (DE)
Inventor: AYTAC SUNGUR DR
IPC: H04B10/00
Filed: 1988-05-26
Abstract: The invention relates to a receiving preamplifier of an amplifier (1) which is preceded by an avalanche photodiode (APD) as receiving diode in the reverse direction and a capacitor (C1) and which has negative feedback via a resistor (RF). To create a receiving preamplifier which also properly functions with high received light powers and thus has a wide dynamic range, a PIN diode (PD) is connected in series in the forward direction with the avalanche photodiode (APD). <IMAGE>
Patent DE-3830655-A1 (DE)
Title: Personal protection device having automatic emergency alarm
Inventor: JANUS HERMANN
IPC: G08B25/01
Filed: 1988-09-09
Abstract: Personal protection device, characterised in that for the purpose of obtaining help an alarm is triggered, even without the monitored person becoming active, as a result of the absence of specific signs of life which can be detected without making contact and automatically, it being able for the person to move freely and without restrictions in the monitored region. Elderly single people may possibly have to rely on sudden, e.g. medical help. Even with the present communicational aids it is often not possible for them to make anybody aware of their plight, since they are too injured, too weak, or unconscious. A series of sensors which are capable of detecting movements in the room, illumination being switched on, furniture being used, and specific sounds (noises), signal signs of life which, when they remain absent for a long time during different periods of the day and night, can trigger the emergency call. This emergency call can be suppressed after an opto-acoustical reminder, by making up for the signs of life which can be detected by the sensors. In addition, possibilities are provided for raising the alarm by pushbutton, radio transmitter, and fire alarm. The alarm is transmitted in an opto-acoustic manner known per se, supported by a written request for help or by means of an automatic telephone dialling and announcement device.
Patent DE-3836287-A1 (DE)
Title: Solid-state laser
Inventor: ROTTMANN ALFONS DIPL ING
IPC: H01S3/086
Filed: 1988-10-25
Abstract: The invention relates to a solid-state laser whose construction is delineated in an integral tube or split tubes, the design being used both as an optical bench, a direct component support, and a protection element against environmental influences. Exemplary embodiments are used to explain how the design makes it possible not only to minimise manufacturing tolerances but also to achieve large variety of three-dimensional shape. <IMAGE>
Patent DE-3836703-A1 (DE)
Inventor: SCHWEFEL ERNST DIPL PHYS
IPC: G01D5/38
Filed: 1988-10-28
Abstract: In accordance with Figure 1, an angular position measuring device (1) has a partial disc (4) with a circle graduation (3). This circle graduation (3) is interferometrically scanned by a scanning device (A), which is constructed as a monolithically integrated optical circuit with two diametrical scanning regions. 
<IMAGE>
Patent DE-3843255-A1 (DE)
Title: Travelling-wave tube
Inventor: LENZ HORST DIPL ING
IPC: H01J23/30
Filed: 1988-12-22
Abstract: In a travelling-wave tube having a helical slow-wave structure held between insulating rods it is proposed that incorporated mesoscopic particles of a material which, in the compact state, is conductive or semiconductive provide the insulating rods with radio-frequency-damping properties.
Patent DE-3844317-A1 (DE)
Title: Device for the accommodation of a seat, especially of a children's seat shell
Inventor: KNATZ GERHARD
IPC: A47D1/10
Filed: 1988-12-30
Abstract: Device for the accommodation of a seat, especially of a children's seat shell, comprising a chassis and a frame arranged thereon for accommodation of the seat or the children's seat shell, the seat or the children's seat shell (1a) being connected to the frame (2) by a scissor-type frame (19). <IMAGE>
Patent DE-3900622-A1 (DE)
Title: Electronic pencil
Inventor: KRATZ MANFRED
IPC: G06F3/0354
Filed: 1989-01-11
Abstract: The distinctive feature of the electronic input device for computers, with the functions of a mouse, with a transmission ball (I), is that the electronic mouse is in the form of a pencil. The lower part of the outer tube (B) of the pencil is preferably conical and sloping at the bottom, corresponding to the way a pencil is held when working. The distinctive feature of the input device is its handy form, corresponding to the way writing and drawing tools are habitually used. It can be put exactly on a point, and used to draw lines exactly. <IMAGE>
Patent DE-3902840-A1 (DE)
Title: Method and device for determining surface structure
Inventor: HOEBING NORBERT DIPL ING
IPC: G01N19/08
Filed: 1989-01-31
Abstract: A description is given of a method and a device for determining the surface structure of machined workpieces, and especially those machined with an end-mill. The method according to the invention is distinguished in that a parameter generated by the machining process in the machining machine is measured and the maximum and minimum values of this parameter occurring within a specific time range are determined, and in that, for determining the surface structure of the workpiece during the machining process, the determined maximum and minimum values are compared with comparison values, in correlation with the respective workpiece location, the said comparison values having been previously determined in relation to a specific surface structure on comparable workpieces and stored.
Patent DE-3904824-A1 (DE)
Title: Content indicator for liquid gas containers
Inventor: KLEINE KARL HEINZ
IPC: F17C13/02
Filed: 1989-02-17
Abstract: Mechanical content indicators, for example having float-actuated transmission linkages, suffice for an optical content indication but are not 100% reliable for a simultaneous filling level limitation. Therefore, apart from the float-controlled content indication, an electronically controlled filling level limitation for filling the container with liquid gas is required which, in the event of a fault, either will not permit filling at all or interrupts it. The particular advantage of this solution lies in the fact that the electronically controlled filling level limitation and also, if appropriate, the content remote indicator are mounted at the same time on the fastening flange of the float indicator, which has a beneficial effect in the case of a subsequent fitting to existing liquid gas containers. <IMAGE>
Patent DE-3906060-A1 (DE)
Title: Azo dyes, preparation thereof and use thereof
Inventor: WALTER HARALD DR
IPC: C09B29/00
Filed: 1989-02-27
Abstract: The azo dyes of the formula <IMAGE> where R1 is -CN, -CON(R6)R7, -COR8, -COOR9, -CONHNHR10 or -SO2R 11, R2 is hydrogen, halogen or substituted or unsubstituted C1-C10-alkyl, C1-C10-alkoxy or phenoxy, R3 is substituted or unsubstituted C1-C10-alkyl, phenyl or naphthyl or unsubstituted or C1-C10-alkyl-monosubstituted or -disubstituted amino, R4 is substituted or unsubstituted C1-C10-alkyl, R5 is a water-solubilising group, R6, R7, R9 and R10 are each independently of the others hydrogen or substituted or unsubstituted C1-C10-alkyl, C5-C7-cycloalkyl, phenyl or naphthyl, R8 and R11 are each substituted or unsubstituted C1-C10-alkyl, C5-C7-cycloalkyl, phenyl or naphthyl, and n is 1, 2, 3, 4 or 5, and where the ring A may be further substituted, dye nitrogen-containing or hydroxyl-containing fibre materials with good fastness properties.
Patent DE-3908365-A1 (DE)
Title: Sales counter
Inventor: HESTERBERG DETLEF
IPC: A47F3/04
Filed: 1989-03-15
Abstract: In order to provide a sales counter which is constructed as a refrigerated counter and is intended for the display of foodstuffs, having a storage shelf, a refrigerating set arranged below the latter, the sales counter having, on its side facing the staff, an access opening situated above the storage shelf and the storage shelf forming together with counter parts air flow slots so as to enable a cooling-air flow within the counter, in the case of which sales counter, on the one hand, good cooling of the displayed articles remains possible and nevertheless rapid oxidation of the displayed articles is prevented, it is proposed that a protective-gas source (e.g. 8) be arranged in the flow path of the cooling air. <IMAGE>
Patent DE-3911721-A1 (DE)
Inventor: BEGUN RALPH MURRAY
IPC: G06F12/08
Filed: 1989-04-11
Abstract: In a dual bus microcomputer system using a cache memory and a cache controller, the timing requirements placed on non-cache memory components by the cache controller are more stringent than the timing requirements placed on the non-cache memory components by the microprocessor. A logic circuit operates on the cache write enable (CWE) signals, and delays those signals in the event of a cache read miss. Delaying the CWE signals relaxes the timing requirements placed on non-cache memory components and at the same time does not impact wait state parameters for read miss operations.
Patent DE-3916340-A1 (DE)
Inventor: FLAKUS WERNER DR
IPC: C08G18/68
Filed: 1989-05-19
Abstract: 2.1 For radiation-curable urethane acrylate dispersions, isophoron diisocyanate, hydroxyalkyl acrylate and conventional saturated polyols are reacted in, for example, acetone solution or the reaction product is taken up in acetone and then treated with sodium salt solutions of aminocarboxylic acids and water. The solvent must subsequently be removed again by distillation. The object is to develop a solvent-free process which is free from side reactions. 
<??>2.2 However, the object is achieved by employing COOH-containing ester polyols made from polyols and trimethyladipic anhydride, maleic anhydride or succinic anhydride as the polyols. 
<??>2.3 Radiation-curing systems.
Patent DE-3916897-A1 (DE)
Title: Oncoming vehicle headlamp dazzle prevention - using light source operated with pulsed repetition and observation results by opt. shutter that is transparent during light pulse
Inventor: SCHERBARTH STEFAN DR
IPC: B60Q1/14
Filed: 1989-05-24
Abstract: The simultaneous operation of several units for the prevention of dazzle caused by incoming vehicles using headlamps with main beam or weather conditions is carried out by a reciprocal frequency and phase synchronisation, so that the light pulses of the meeting headlamps respectively dip in the closing time of the optical shutter. A conventional flashlight stroboscope with xenon flashlamp and corresp. reflector optic can be used as the light source, and as shutter an optical modulator based on an electro-optic ceramic. USE/ADVANTAGE - Method for preventing dazzle when vehicles using headlamps on main beam meet or run into unfavourable weather conditions.  Ensures redn. of dazzle even if oncoming drivers do not dip headlamps.
Patent DE-3918298-A1 (DE)
Title: Remote operation of video recorder over telephone lines - is performed by speech or encoded digital or analogue transmission over network to special tele-control interface
Inventor: SCHUELEIN REINHARD
IPC: H04N5/782
Filed: 1989-06-05
Abstract: The video cassette recorder is equipped with a special interface accessible from outside for transmission of control signals from the telephone network. The interface is adapted to existing standard remote operation terminals, and also allows the transmission of messages describing its own operative condition. Complete programming of the recorder can be implemented by suitable encoding of the pulses or signal frequencies transmitted via the telephone network. The recorder can be controlled also by vocal commands spoken into the telephone and processed by a speech recognition circuit at the receiving end.
Patent DE-3922307-A1 (DE)
Title: New optically active cpds. with fluoro-substd. asymmetrical carbon
Inventor: WAECHTLER ANDREAS DR
IPC: C07D213/50
Filed: 1989-07-07
Abstract: New optically active cpds. are of formula (I):  R = 1-15C alk(en)yl, opt. with one CN or one or more F or Cl substits., in which one -CH2- gp. may be replaced by -O-, -CO-, -O-CO-, -CO-O- or -O-CO-O-; A1 and A2 independently = opt. mono- or difluoro-substd. 1,4-phenylene, pyridin-2,5-diyl, pyrimidin-2,5-diyl, pyrazin-2,5-diyl, pyridazin-3,6-diyl, 1,3,4-thiadiazol-2,5-diyl, 1,2,4-thiadiazol-3,5-diyl or trans-1,4-cyclohexylene, in which one or two non-adjacent CH2 gps. may be replaced by -O- and/or -S- and/or a CH gp.; Z1-3 independently = -CO-O-, -O-CO-, -CH2O-, -OCH2-, -CH2CH2-, -CH=CH-, -CC- or a single bond; Q1 = -CH2CH2-, -CH2CH2CH2-, -OCH2-, -CH2OCH2-, -OCH2CH2-, -O-CO- or -CO-O-CH2-; Q2 = -O-, -O-CO-, -(CH2)3-O- or a single bond; m = 0, 1, 2 or 3; n = 0 or 1; o = 1-9. (I) can be prepd. (not claimed) by standard methods, e.g. as described in Houben-Weyl, Methoden der Organischen Chemie, Georg-Thieme-Verlag, Stuttgart.
Patent DE-3923041-A1 (DE)
Title: Magnetic video tape recorder - transfers head signals via transformer without noise component
Inventor: SEEGERT BERNHARD DIPL ING
IPC: G11B5/02
Filed: 1989-07-13
Abstract: The magnetic tape recorder has heads (1,1a) mounted on a rotating drum (9), across which the tape passes (2). A rotary transformer (3) is used to transmit the signals from the rotating heads to a fixed receiver. The rotary transformer has capacitive coupling (C1-C4) and noise signals (USFor) components are reduced by the fixed transformer (6). The transformer consists of two single units that are not magnetically coupled. The noise voltages are in the same direction and as a result there is no noise current produced. The outputs to the amplifiers are free of noise. USE - For VTR.
Patent DE-3935158-A1 (DE)
IPC: H05K7/18
Filed: 1989-10-21
Abstract: The invention proposes a joining device for two cabinet parts, in particular for the base of a cable distribution cabinet with the same, having joining elements arranged in the interior of the cabinet parts, the joining elements consisting essentially of a plug-in element which is supported in one of the cabinet parts, can be plugged into the other cabinet part and has at least one wedge holder, and of at least one wedge, which can be displaced in the other cabinet part relative to the plug-in element and, in its locked position, engages behind the at least one wedge holder.
Patent DE-3937990-A1 (DE)
Title: Braiding machine
Inventor: MIZUNO SATOSHI
IPC: D06H7/08
Filed: 1989-11-15
Abstract: A braiding machine comprises a cutter to cut a tubular braided prod. made by a tubular braiding unit, and a winder to wind-up the cut open braided prod. The cutter may have 2 cutting edges at both sides of the prod.
Patent DE-4000537-A1 (DE)
Title: Cutting tool for plastics films and fabrics - consisting of foil component having cutting edge which corresponds to that of other cutting tool to reduce cutting gap
Inventor: SCHUERMANN WALTER DIPL ING
IPC: B26D3/10
Filed: 1990-01-10
Abstract: The cutting tool, for working thin plastics films and coated or uncoated textile fabrics, has a foil component (30) fitted to the surface (16, 18) of a cutting tool section (12, 14), using a strong and non-distorting material. The film (30) has a cutting edge (28) corresponding to a cutting edge (22, 20) of the other cutting tool section (14, 12) so that the cutting gap (s2) between the foil cutting edge (28) and the facing cutting edge (22, 20) is significantly less than the cutting gap (s1) between the cutting tool sections (12, 14). The cutting edge (28) of the foil (30) is formed by the cutting edge (22, 20) of the other tool section (12, 14) which is not fitted with a foil. The foil (30) is durably fixed to a cutter section (12, 14), or it can be removed. The foil (30) is pref. of a spring bronze, brass, a steel alloy or a  ferro-magnetic steel alloy. The foil (30) has a wall thickness of 30-200 micron. ADVANTAGE - The tool is simply built and produced, and gives a clean cutting edge.
Patent DE-4004969-A1 (DE)
Title: Quartz oscillator mechanical resonant frequency measuring CCT - contains bridge circuit in PLL feedback loop and potentiometer set to null
Inventor: SCHULTHEIS LOTHAR DR
IPC: G01R29/22
Filed: 1990-02-19
Abstract: A circuit determines the mechanical resonant frequency of a mechanically damped quartz oscillator (9) in an oscillator and contains a bridge (1) with the quartz in series with a resistor (Ry) in one arm and a compensation capacitor (Ck) in series with a second resistor (Rk) in the other arm. The bridge circuit is connected in the feedback loop of a PLL control loop. The second resistor is a potentiometer set to null the bridge's phase and to maximise the difference voltage between the two arms. USE/ADVANTAGE - Accurately maintains electrical resonance equal to mechanical resonance of quartz, e.g. for timing generation.
Patent DE-4007668-A1 (DE)
Title: Gelatin- and water-based hydrogel foams
Inventor: SACHAU GUENTHER
IPC: C08J9/00
Filed: 1990-03-10
Abstract: Hydrogel foams (I) based on gelatin and water contg.: (a) opt. polyvinyl alcohol; (b) crosslinking agent selected from: (ba) at least trivalent metals or metalloids e.g. boric acid, borates, aluminium salts, titanates, alkyltitanates; and/or (bc) organic and/or inorganic acids and/or their salts e.g. gallic acid, gallates, phosphoric acid, phosphates, dihydroxy benzoic acid, dihydroxybenzoates; (c) opt. organic plasticisers and/or auxiliary agents and/or additives. Also claimed are: (i) prepn. of (I) by mixing gelatin, or a mixt. of gelatin and polyvinylalcohol, with water and opt. a plasticiser, adding a crosslinking agent, energetically stirring the resulting reaction mixture under a flow of gas, and spreading the foam produced opt. in laminar structures or laminar supports; (ii) laminar structures prepd. from (I); (iii) laminar supports prepd. from (I).