baber/WOPTO huggingface dataset:
Patent DE-3841598-A1 (DE)
Title: Process for the preparation of organometallic high polymers
Inventor: FUJINO MASAIE
IPC: G03G5/07
Filed: 1988-12-09
Abstract: The present invention relates to the improvement of the process for the preparation of organometallic polymers having a main chain formed from silicon and/or germanium or carbon and silicon or germanium, and a side chain of organically substituted groups, such as alkyl or aryl groups. The improved procedure relates to the dehalogenation of an organosilane or organogermane halide in the presence of an alkali metal and in the presence of a crown ether having 28 or less carbon atoms and 10 or less oxygen atoms, where the organosilane or organogermane halide is polymerised by condensation. The crown ethers act as accelerators; preferred examples for the process claimed are 18-crown-6 and 12-crown-4. The molecular weights of the organometallic high polymers of the invention have a narrow molecular weight distribution in the region of 100,000, so that they have excellent mouldability. The polymerisation step is complete in high yield in a relatively short time. The organometallic polymers of the invention are highly suitable for use as precursors for silicon carbide, photoresist materials, photoinitiators and photosensitive materials for electrophotography. <IMAGE>
Patent DE-3842267-A1 (DE)
Title: Variable valve overlap for four-stroke engines by means of planetary gearing with adjustment
Inventor: MAGER GERD
IPC: F02D13/02
Filed: 1988-12-15
Abstract: In order to bring four-stroke engines up to a higher specific output but at the same time to a lower partial load consumption, the values for the start of inlet and exhaust, fixed in conventional engines, are designed to be variable in that a planetary gearing is connected to the relevant camshaft on the input side. The planetary gearing comprises the internally toothed gear, the central sun gear and the planet wheels, which are supported in a common adjusting lever. The drive from the crankshaft is by way of the internally toothed gear and the output to the camshaft by way of the sun gear. Due to rotation of the adjusting lever, a further rotational movement is superimposed on the actual camshaft rotation, so that the opening and closing points of the valve are out of phase in relation to the original adjustment. The characteristic of the valve lifting curve is not varied in the process.
Patent DE-3842457-A1 (DE)
Title: Firing device for the pulsating combustion of gaseous fuels
Inventor: PLETZER WERNER
IPC: F23D14/22
Filed: 1988-12-16
Abstract: In the case of a firing device for the pulsating combustion of gaseous fuels, there is provided in the transition region between a combustion chamber and a precombustion chamber a flame-retaining swirl element for the fuel/air mixture entering the combustion chamber. This swirl element is provided on the fuel inflow nozzle arranged in the transition region, and is concavely curved on the side facing the combustion chamber.
Patent DE-3843130-A1 (DE)
Title: Surface contact-making device for RF doors
Inventor: NEDTWIG JOACHIM
IPC: E06B5/18
Filed: 1988-12-22
Abstract: The invention relates to a door for RF-tight rooms. In order to produce a contact which is radio-frequency-tight on all sides between a door leaf and a screening wall, a sliding door is used which can be lowered into the door opening. The door leaf edge consists of a contact metal sheet which is stiff to bend and rests on the screening wall when the door is closed. When the door is in the closed position, the contact metal sheet is mechanically or pneumatically pressed against the screening wall by means of a contact-pressure device.
Patent DE-3902290-A1 (DE)
Title: Fair stand for exhibiting structural elements, in particular doors
Inventor: DOERING ERICH DR
IPC: E04B1/24
Filed: 1989-01-26
Abstract: A fair stand, in particular for exhibiting doors with drives and drop-down safeguard for garages and the like, can be used universally, can be assembled and dismantled in modular fashion and is stable and can be subjected to a high degree of loading. It comprises filigree load-bearing members which are connected to one another in an aligned manner and adjoin one another in the direction of their longitudinal axis or in the direction transverse thereto. Each filigree load-bearing member is square or rectangular in profile and is composed of round bars which are spaced apart from one another in parallel and define the edges of a cuboidal body, and of transverse bars which run in a zigzag manner between the round bars and define the surfaces of said cuboidal body. The abovementioned bars are preferably made of a structural seal and are connected to one another by weld connections.
Patent DE-3902598-A1 (DE)
Title: Method for determining the adhesive strength of thin hard coatings
Inventor: GOBLIRSCH GERHARD
IPC: G01N19/04
Filed: 1989-01-28
Abstract: By means of a constantly loaded Knoop diamond, a torsional stress is effected, by rotation, in the coated surface to be tested. The coating thus loaded at a point shows characteristic cracking, which enables assessment of the adhesive strength by means of a series of standards.
Patent DE-3902753-A1 (DE)
Inventor: NOVOTNY RUDOLF DR
IPC: C01B33/32
Filed: 1989-01-31
Abstract: The direct hydrothermal production of high purity potassium silicate solutions having a high SiO2: K2O molar ratio by reaction of a silicon dioxide source with aqueous potassium hydroxide solutions is made possible by using a silicon dioxide source that contains a sufficient fraction of cristobalite phase, or by conditioning other crystalline forms of silicon dioxide by heating at or above 1100 DEG C., but below the melting point of silica, before the hydrothermal treatment. Preferably the potassium hydroxide solution has a concentration range of 10 to 40% by weight, and the reaction is carried out in a closed pressure reactor at temperatures of 150 DEG to 300 DEG  C. and under saturated steam pressures corresponding to those temperatures.
Patent DE-3903551-A1 (DE)
Title: Connecting part of a pipeline coupling
Inventor: ROESCH VOLKER DR
IPC: F16L47/02
Filed: 1989-02-07
Abstract: Connecting part (2), in particular plug-in means, for a pipeline coupling, composed of a plastic connection body (4) and of a plastic pipe piece (6) which is connected to said body in a connection region (26) by friction welding, the connection body (4) and/or the pipe piece (6) exhibiting a temperature-measuring device (30) in the vicinity of the connection region (26). <IMAGE>
Patent DE-3909609-A1 (DE)
Inventor: SCHWERDT HANS-WERNER DIPL ING
IPC: F16F13/00
Filed: 1989-03-23
Abstract: A rubber bushing with hydraulic damping, comprising an inner and an outer tube (1, 2) which are supported in a radially elastic manner on one another by a first spring body (3) consisting of rubber. A second spring body (10) is provided parallel to the first spring body (3). The second spring body (10) is arranged at an axial distance from the first spring body (3) in the gap between the inner and the outer tube (1, 2). The second spring body (10) can optionally be connected to the inner and/or outer tube (1, 2). 
<IMAGE>
Patent DE-3913867-A1 (DE)
Inventor: SEYFFERT ULRICH DIPL ING
IPC: B65H75/24
Filed: 1989-04-27
Abstract: A device for clamping a drum comprises a hollow carrier spigot (3) insertable into the core of the drum, a stop ring (13) detachably mounted on the spigot, a setting rod (4) provided with a conical end (5) and arranged to be axially displaceable in the spigot, and clamping elements (8), which are laterally guided in longitudinal grooves (7) of the spigot and movable radially outwardly against spring force. Each of the clamping elements (8) is constructed as a rocker with a convex bearing surface (6), and at its rearward end, facing a bearing housing (1) of the spigot (3), bears by way of a respective compression spring (16) radially outwards against the ring (13). <IMAGE>
Patent DE-3917546-A1 (DE)
Title: Device for purifying reactor coolant and method for controlling the device
Inventor: NAKAYAMA TADAKAZU
IPC: G21C19/307
Filed: 1989-05-30
Abstract: A device for purifying reactor coolant has a pipe conduit (11) for the removal of water from a reactor core (12); this conduit is provided independently of a primary circuit circulation conduit (3) and its open end lies at the bottom of a reactor pressure vessel (1). The removal conduit (11) runs upwards, beginning from its open end in the reactor pressure vessel, and to the outside through the side wall of the pressure vessel. In a preferred embodiment, the removal conduit is provided with a siphon-breaking valve (13) close to the highest point of its section outside the pressure vessel. <IMAGE>
Patent DE-3919172-A1 (DE)
Title: Lighter jacket has heavy penetrator rod core - of integral or divided structure and with relatively small dia.
Inventor: WEIHRAUCH GUENTER DR
IPC: F42B12/06
Filed: 1989-06-12
Abstract: A pointed missile for penetrating targets at very high speeds has a stabiliser jacket (2) of light construction which on firing acts as a sabot and falls away from a central penetrator (3), whose dia. is 1/4-1/2 or possibly up to 1/3 that of the jacket.  The penetrator is a long slender rod, of circular or polygonal cross-section, e.g., a hexagon and may have external ribs, possibly aligned with ribs extending radially inwards from the jacket interior. The penetrator may be a single rod or an axially spaced series of separate elements, differing in shape and possibly with dia. decreasing rearwards. The jacket may have sections of different density, e.g., as telescoped tubular elements. Penetrator and jacket may be screwed together. ADVANTAGE - Without increasing barrel stress, firing velocity is increased, with improved accuracy from a longer missile with high penetration.
Patent DE-3925316-A1 (DE)
Title: Network for microwave power distribution - has specified interrelation of quarter and half wave sections forming meshes with two parts
Inventor: MAYER BERND
IPC: H01P5/22
Filed: 1989-07-31
Abstract: The network consists of multiple line meshes which each consist of four branches with alternate half and quarter wavelengths. These are so conductively coupled together that each two meshes have a common half-wavelength branch, so that always exactly two half wavelengths remain which are only common to one mesh. The first port is coupled via a matching network consisting of line parts, which in the simplest event consists of one line piece (6) with the wave impedance of the feed line, with the middle of the half-wavelength branch (14) common to only one mesh.  The ends of the same are coupled via line sections (15,16) with the second port (2) and the third port (3).  One end of the other branch (12), coupled to only one mesh is coupled via a line piece (7) with the fourth port (4).
Patent DE-3927420-A1 (DE)
Title: Ink ribbon cassette for typewriter or similar - has flat cardboard base forming part of packaging removable by tear=off strip
Inventor: FRERICHS KLAUS-DIETER ING GRAD
IPC: B41J32/00
Filed: 1989-08-19
Abstract: An ink ribbon cassette has a flat base plate with a rigidly attached pot-shaped top. The ribbon passes from a supply spool out through one aperture and back through another to a take-up spool. The apertures are in protruding guide arms holding the ribbon tensioned between the type carrier and print position. The cardboard housing base plate (5) forms part of the packing and is detachably connected to a cardboard strip with sections covering the front, free spaces, rear, top and bottom of the cassette. ADVANTAGE - Requires only one packing for  transport and storage.
Patent DE-3932050-A1 (DE)
Title: Forged knife - has forced projections from handle core finishing flush with surface of handle
Inventor: BORN K P DR ING
IPC: B26B3/02
Filed: 1989-09-26
Abstract: A forged knife has a sprayed plastics handle but with forged projections (3) from the core of the handle at right angles to the blade, which finish flush (5) with the plastic grip (4). USE/ADVANTAGE - A combined plastic and rivetted handle.
Patent DE-3933191-A1 (DE)
Inventor: SUZUKI NOBAHARU
IPC: G03B13/06
Filed: 1989-10-04
Abstract: An electronic still camera has a photographing system, a photographing element 15a located at a surface of the photographing optical system on which an image is formed and a finder optical unit 20 disposed separately from the photographing optical system 11. An optical path of the finder optical unit comprises a forward optical path disposed in parallel to and close to the photographing optical system, a rearward optical path disposed at a position away from an optical axis of the photographing optical system farther than the forward optical path and a refracted optical path for connecting the forward optical path to the rearward optical path disposed at a position forward of the photographing element. <IMAGE>
Patent DE-3938579-A1 (DE)
Title: Vacuum screw compressor for compacting bulk materials - in which tapered vibrating screw element compresses the material inside conical housing surrounded by vacuum chamber
Inventor: SPRENGER HERBERT W DIPL ING
IPC: B30B9/12
Filed: 1989-11-21
Abstract: A device for reducing the vol. of bulk materials and sludges consists of a hollow conical vibrating screw (12) surrounded by a porous conical housing which may be made from a sintered material. The conical screw element (12) has a screw thread with a concave half-round cross-section, and contains a built-in vibration generator (10) which is isolated from the drive shaft (1) by an elastic coupling (4). The construction of the conical screw element (12) may be such that it can be broken down into sections (15). The chamber enclosed by the porous housing (11) and outer casing (13) is subjected to a vacuum. USE/ADVANTAGE - This device is used for compressing and removing air or gas from bulk powdery or fine crystalline materials, in order for example to reduce the material vol. and so to economise on packing and transport costs. The device may also be used for filter-pressing and removing liquids or water from sludges or fruit etc. A high degree of specific weight of bulk materials, and dry-matter content of sludges etc., is achieved.
Patent DE-4004900-A1 (DE)
Inventor: JOHANNSSEN WALTHER DR
IPC: C12Q1/26
Filed: 1990-02-16
Abstract: The invention relates to NAD(P)H-dependent nitrate reductase derived from yeasts, a process for producing it and its use in a reagent for nitrate determination. The nitrate reductase is characterized by a molecular weight of approximately 350 000 D. In the process for obtaining it, yeast cells containing nitrate reductase are cultured in a fully synthetic culture medium with nitrate as the sole source of nitrogen and disintegrated in a phosphate buffer. The raw extract is chromatographed in an anion exchanger. The fraction containing nitrate reductase is mixed with protein, concentrated by ultrafiltration and dried by fluidized bed granulation. In addition to the nitrate reductase so obtained, the reagent for nitrate determination contains NAD(P)H and a colour reagent for nitrite determination.
Patent DE-4009505-A1 (DE)
Inventor: NEUSS MICHAEL DR
IPC: C07C67/347
Filed: 1990-03-24
Abstract: Unsaturated fatty acids and their esters can be reacted with aliphatic, non-activated C5-C20 olefins in the presence of laminar silicates and activated carbon to form branched fatty acids and their esters.
Patent DE-4010975-A1 (DE)
Title: Nasal membrane pressure instrument - has controller between pressure source and inflatable balloon
Inventor: SIEBERT GUENTER DR
IPC: A61B17/12
Filed: 1990-03-28
Abstract: The instrument presses a nasal mucous membrane against enclosing tissue. It comprises an inflatable balloon (1) connected to a pressure source (3), there being a controller (2) in between for the degree to which the balloon is filled. The supply can comprise a plunger pump with cylinder, typically a plastics syringe, and connected by a hose to the controller. ADVANTAGE - Ensures even pressurisation of membrane.
Patent DE-4012575-A1 (DE)
Title: Fired from small calibre weapon - projectile has upper surface arched away to its centre line with contour shaped as concave curve
Inventor: METTERNICH HANS-DIETER
IPC: F42B30/02
Filed: 1990-04-20
Abstract: The point of the projectile has equally distributed deepened (g) and heightened (h) formations on the periphery of its upper surface (a) which form segments, which are so arranged that the tractrix shape of the projectile point upper surface is maintained. Such deepened and heightened formations can be of any geometrical form, viz. oval, round, semi-round, crescent-shaped, rectangular, trapezoidal or similar shapes.  Both can be inclined towards, against or in the direction of spin of the projectile. The heightened and deepened formations thus primarily enlarge the projectile upper surface, so that an increase in target effect by sound pressure enhancement and the resultant shock effect is achieved. USE/ADVANTAGE - For small calibre firearms, hand weapons, and also large calibre units, to increase the effect of fired projectiles, with partic. application to police operations.
Patent DE-4013905-A1 (DE)
Inventor: SCHNEIDER HANS-JOACHIM
IPC: B05C9/14
Filed: 1990-04-26
Abstract: Pasting devices (10) and premelting agents (12) are used at book binder's workshops in adhesive binding machines in order to automatically paste the back of books. Whereas until now the pasting device and the premelting agent were arranged as separate components, the invention proposes to integrate the premelting agent (12) in the pasting device (10). The glue basin is thus located in the upper area of the pasting device and the premelting agent (12) is arranged in the lower part of the housing of the pasting device (10).
Patent DE-4015421-A1 (DE)
Title: Welded joint for pipe line - is formed by two rings welded to each other and to ends of the pipes
Inventor: KUEPPER HORST DR ING
IPC: F16L13/02
Filed: 1990-05-14
Abstract: A welded joint is formed between two pipes (8a, 8b) by means of two turned rings (2a, 2b). Each ring (2a, 2b) has an ID (3) equal to the ID (4) of the pipes (8a, 8b). The outside diameter of the ring (2a, 2b) at one end of the ring is the same as the outside diameter of the pipes (8a, 8b). The OD increases from this end over part of the length of the ring where a step is formed with the  larger dia. of the other end. Each ring (2a, 2b) is butt welded at its smaller dia. end to a pipe (8a, 8b). The outer end face of each ring has an annular groove (10). The end faces are joined together with a butt weld (11)  which extends radially inwards as far as the groove (10) and a sealing ring (9) is fitted between the ring faces which lie radially inwards from the groove. USE - Pipe lines for liq. or gaseous media.
Patent DE-4015849-A1 (DE)
Inventor: UPHUES GUENTER
IPC: D06M13/322
Filed: 1990-05-17
Abstract: Quaternerised esters with textile softening and hydrophilising properties are obtained by the reaction of mono-unsaturated fatty acids containing at least 40 mol % trans-configured double bonds or their esters with alkanol amines followed by quaternisation of the reaction products with alkylising agents.
Patent DE-4018670-A1 (DE)
Title: Road surface prepn. plant - has edge limiting device movable cross-ways to plant longitudinal central axis
Inventor: WINTERER WALTER
IPC: E01C19/00
Filed: 1990-06-11
Abstract: In a pref. arrangement, a hydraulic cylinder (44) is used to maintain a guide roller (28) in firm location on the vertical surface (31) of a slope stone. The displacement piston (45) of the hydraulic cylinder is connected via its connecting rod (46) with the edge limiting device (7). A hydraulic pump (48) aspirating from a tank (47) is connected to the control chambers (52, 53) of the hydraulic cylinder (44) via a 4/3 way valve (49) and two work conduits (50, 51). A conduit (57) leads from the valve (49) via a quantity distributor (54), a ball cock (55), and a check valve (56) to the work conduit (51) connected to the control chamber (53). The conduit (57) is protected against overload by a pressure limitation valve (58) which empties into the tank (47). USE/ADVANTAGE - For road surface laying, to ensure that an even edge line of the laid material is produced.
Patent DE-4022759-A1 (DE)
Title: Throughflow electric water heater - has staggered activation of heating elements to ensure removal of air bubbles prior to full heating
Inventor: TAAG JUERGEN
IPC: F24H9/20
Filed: 1990-07-14
Abstract: The electric elements (3) are in several loops of the heating block (1). Switching on the heater applies heating to one section and to the other sections by a time delay control (13) in a staggered manner. This ensures that any air bubbles are removed before the elements are at full heat. The elements are switched by electronic switching components (12) (thyristors etc.). The initiating switch (8) has ganged contacts and is operated by a pressure sensitive unit (10) on the water supply line (11). ADVANTAGE- No risk of heating element damage, improved heating control.
Patent DE-4027390-A1 (DE)
Inventor: POSS GERHARD
IPC: A61M13/00
Filed: 1990-08-30
Abstract: The invention concerns an inhalation device which does not use a propellant gas, the device having a supply of the medical substance to be inhaled, a manually operated metering device for taking a given dose of the substance for each inhalation operation, a mouthpiece designed for active inhalation and an air chamber designed to allow each dose of the substance to be spread throughout the stream of air. In inhalation devices of this kind, it is important for the inhaled substance to be repeatedly metered with precision. To ensure this, the invention calls for a holder in which the supply of the substance is not in powder form as in existing devices, but comprises held in a specific geometrical structure (tablet). This holder comprises a device which allows the required dose to be rubbed off the tablet mechanically.
Patent DE-4042232-A1 (DE)
Title: Adaptor between computer and ISDN network - has processor connected to computer via bidirectional control point and also to ISDN network
Inventor: TIX MARKUS
IPC: H04Q11/04
Filed: 1990-12-29
Abstract: The processor (2) of the adapter is connected on the one hand via a bi-directional control point (10) to the computer, and on the other hand to the ISDN network. It handles data by data exchange in accordance with ISDN protocols, and/or transparently transfers them to the computer. Control of the processor is pref. independent of the computer, and transmission of data from the processor may occur directly into the switch-on unit (7) of the ISDN network. The ISDN protocols are stored in memories (4, 5), which are connected to the processor via a data bus (3). ADVANTAGE - Bi-directional data connection, independent of the special computer.
Patent DE-4103882-A1 (DE)
Title: Program operating device and digital signal processor - uses marker value hold circuit to reduce number of required operations compared to conventional ones
Inventor: YAMAKI MAKIO
IPC: G06F9/32
Filed: 1991-02-08
Abstract: The program processing device contains a controller which decodes a program contg. a conditional instruction and generates a command signal, an arithmetic operation arrangement which processes arithmetic operations according to the instruction signal and outputs a marker value corresp. to the result of the arithmetic operation, and a hold device which retains the values for conditional evaluation wrt. the conditional command in the controller. The hold device holds a defined number of marker values in their order of generation, including the last marker value generated by the arithmetic operation arrangement. USE/ADVANTAGE - Eliminates need to repeat operation in order to determine contents of marker which has already been produced and hence reduces number of operations required.