baber/WOPTO huggingface dataset:
Patent DE-19707475-A1 (DE)
Title: Liquefaction of hydrocarbon-rich stream, esp. natural gas
Inventor: SCHMIDT HANS DR ING DR
IPC: F25J1/02
Filed: 1997-02-25
Abstract: Process for liquefying a hydrocarbon-rich stream, esp. a natural gas stream, uses a mixture of N2 and 3C-hydrocarbons as freezing mixture in the freezing mixture cycle at liquefaction pressures of more than 40 bar.
Patent DE-19719901-A1 (DE)
Title: Single longitudinal mode frequency converted solid state laser
Inventor: JIN TIANFENG
IPC: H01S3/082
Filed: 1997-05-12
Abstract: A single longitudinal mode, frequency-converted solid-state laser includes an optical pumping source (10) for producing optical pumping radiation.  A coupled resonant cavity (40) has first (42) and second (44) resonant cavities that share a common partially reflecting mirror (18). A solid-state laser medium (22) is disposed within the first resonant cavity and is optically pumped by the optical pumping radiation.  The solid-state laser medium generates a first laser radiation at a first wavelength. An optical wavelength converter (24) is disposed within the second resonant cavity for converting the first laser radiation at the first wavelength into a second laser radiation at a second wavelength.  A temperature controlling device (31) controls the temperature of the first and second resonant cavities. The first and second resonant cavities are used for oscillating the first laser radiation at the first wavelength.
Patent DE-19726383-A1 (DE)
Inventor: HECHT JOACHIM
IPC: B25D16/00
Filed: 1997-06-21
Abstract: The invention relates to an electrical machine tool for rotational and/or percussive tools such as drilling machines or hammer drills, comprising a machine housing (10) with an electrically driven working spindle (11) to drive a tool fitting (12) and a mechanical percussive element (16) which has a beater (18) that is accelerated in its axial direction, directly or indirectly beating the shaft of the tool and a drive unit (20) which causes the beater (18) to accelerate on the basis of a rotational movement. Said drive unit (20) comprises an axially displaceable sensing element synchronously operating with the working spindle (11) in order to achieve higher working spindle (11) speeds without using a countershaft. Said sensing element (21) is guided between two ring-shaped curved paths (22, 23) arranged in a rotationally fixed manner in relation to the working spindle (11) with axial clearance.
Patent DE-19726976-A1 (DE)
Title: Flexible composite is used as e.g. antistatic conveyor, high voltage conductor or thermal protection
Inventor: EGGERT MARTIN DR
IPC: C23C4/18
Filed: 1997-06-26
Abstract: The flexible conductive sheet material comprises textile reinforcement (2), with a physically-bonded coating of conductive material (12) on one side. This has a plane, smooth surface, which is reduced to minimal thickness.  Also claimed is the method of making the sheet, preferably by applying excessive coatings to the reinforcement, then denuding them to the specified thickness. Preferred methods of removal include sand blasting, milling, grinding, chemical- or electrical etching, or spark erosion. Alternatively laser-cutting, electron beam or water jet removal is practiced.
Patent DE-19728336-A1 (DE)
Title: Hair dyeing composition containing direct 2-nitro-aniline dye
Inventor: BITTNER ANDREAS DR
IPC: C07C211/52
Filed: 1997-07-03
Abstract: Agents for dyeing keratin fibres contain a direct 2-nitroaniline dye of formula (I)  or its salt with an (in)organic acid. R1 - R4 = H, alkyl, hydroxyalkyl, alkoxyalkyl, carbamylalkyl, mesylaminoalkyl, acetylaminoalkyl, ureidoalkyl, carbalkoxyaminoalkyl, 'sulphalkyl', piperidinoalkyl, morpholinoalkyl, phenyl or p-aminophenyl, where alkyl moieties have 1-4C and R1 - R4 are not all H; or -NR1R2 and -NR3R4 = aziridino, azetidino, pyrrolidino, piperidino, azepino, azocino, morpholino, thiomorpholino or piperazino (optionally N-substituted by H, 1-4C alkyl, 2-3C hydroxyalkyl, (1-4C) alkoxy-(2-3C) alkyl, 2-3C aminoalkyl or 2,3-dihydroxypropyl; R5 - R7 = H, halogen, 1-4C alkyl, 1-4C alkoxy, carboxy, sulpho or 2-4C hydroxyalkyl. The use of (I) for dyeing keratin fibres is also claimed.
Patent DE-19728845-A1 (DE)
Title: Laser amplifier
Inventor: ALTMANN KONRAD DR
IPC: H01S3/0941
Filed: 1997-07-05
Abstract: The laser amplifier includes an active solid state material. One or more pumping beams are fed via mirrors or other optical devices, such that each individual pumping beam is focussed in multiple onto different parts of the material. The laser beam is fed so that all these parts are irradiated and thus amplified. The solid-state material is composed of several blocks of the same base material, but in part doped and in part undoped such that the pumping beam is absorbed only in the doped blocks. The blocks are connected together by diffusion bonding after polishing of the surfaces, so that the mechanical cohesion is comparable to that of the solid-state material.
Patent DE-19734862-A1 (DE)
Title: Steam pressure system
Inventor: GERICKE BERND
IPC: F22B1/18
Filed: 1997-08-12
Abstract: For the development of a high pressure steam, at least two overheating stages (10-12) are used in series, fitted with an injection cooling (26,27). For an intermediate pressure steam, at least two intermediate pressure stages (13,14) are used with an injection cooler (28). The end stages (12,14) of the high and intermediate pressure systems are located at the same section of the boiler (9), with their pipes aligned alternately among each other in a comb-shaped layout. The intermediate pressure steam stage (13) is between or after the first two high pressure steam stages (10,11). The first burner (6), using the exhaust of the gas turbine, is at the boiler (9) near the end stages (12,14) of the high and intermediate pressure systems. A second burner (25) is at the boiler (9) in front of the high pressure steamer (21). The first burner (6) is controlled according to the steam temp. at the outlet of the first intermediate pressure stage (13), and the second burner (25) is controlled according to the high pressure loading.
Patent DE-19740405-A1 (DE)
Title: Ventilated drain hatch
Inventor: STREBE JUERGEN
IPC: E03F5/08
Filed: 1997-09-09
Abstract: The stopper (1) can be so mounted on a screw (3) as to form an annular gap between it and the hatch cover (2) material. The stopper can be made of hard or swelling rubber, in the latter case functioning as a membrane.
Patent DE-19745160-A1 (DE)
Title: Compound safety glass production
Inventor: DEICHSEL ROBERT DIPL ING
IPC: C03C27/12
Filed: 1997-10-14
Abstract: To produce a compound safety glass, a transparent film made, e.g., of polyvinyl butyral is placed between two glass panes in a sandwich structure, which, in a primary stage, is heated and compressed to expel any air. At the exit from the primary stage, the sandwich material passes through an encapsulated path length to be heated by shortwave radiation under pressure to soften the intermediate film layer. The sandwich structure is cooled, while the pressure is maintained.   Also claimed is an assembly with a laying station to place a transparent plastics film on a glass pane to be covered by a further pane, to be heated and compressed initially to expel any air. The heating stretch at the end of the primary station is encapsulated, for the delivery of shortwave and/or medium wave radiation to the sandwich structure, followed by a mechanical press station.
Patent DE-19749103-A1 (DE)
Title: Method of correcting output waveform of magnetic head
Inventor: OMORI HIDEKI
IPC: G11B5/012
Filed: 1997-11-07
Abstract: The method involves obtaining a sample error value by adding errors with respect to a ternary target value of a sample value when an analog signal output by the head is subjected to an analog to digital conversion. The method further involves correcting a vertical asymmetry of a waveform of the analog signal based on the error value when the analog to digital conversion is carried out. Preferably, in the correction step, a correction value is calculated based on the error value and this changes an input range of the analog to digital conversion such that it is vertically asymmetrical.
Patent DE-19750927-A1 (DE)
Title: Continuous read-out of data sequence from DRAM or SDRAM for computer systems
Inventor: KUFER WOLFGANG
IPC: G11C11/406
Filed: 1997-11-17
Abstract: The read out from dynamic memory in a continuous and interruption-free process is based upon the memory being subdivided into a number of modules.  The data within the modules are distributed such that during the reading of data from one module the other module it is refreshed. The process requires at least three memory modules.
Patent DE-19753285-A1 (DE)
Title: Coin operated games machine
Inventor: SCHATTAUER JUERGEN
IPC: G07F17/32
Filed: 1997-12-01
Abstract: The coin operated games machine is based upon the generation of a combination of symbols that change in a pseudo random cycle. The symbols are used with acoustic signal generation and the system has a number of different game possibilities that allow the odds against winning to be varied. A playing period and number of games are specified.
Patent DE-19801188-A1 (DE)
Title: Foot pump for driving hydraulic tools, cylinders, and suchlike, and could be used to drive cutting tool for separation of cables under tension
Inventor: GAENSLEIN HANS-GUENTHER
IPC: F04B3/00
Filed: 1998-01-15
Abstract: The pump's LP piston(26), tightly sealed against the cylinder wall of the LP chamber(31), can move up and down against the force of a spring(30).  The LP piston has a central bore in which slides a section(23) of the HP piston(22).  An annular shoulder on the HP piston engages with the LP piston.  The force initiation of the foot lever(13) takes place upon the top of the HP piston lying outside the cylinder chamber.  A pedestal(21) with a HP piston cylinder chamber(25) is provided at the bottom of the cylinder chamber and aligns with the longitudinal bore(24) in the LP piston.   Inlets and outlets are provided in the LP and HP piston chambers respectively and incorporate check valves.
Patent DE-19804620-A1 (DE)
Title: Vacuum cleaner with dust bag and fan assembly
Inventor: BOTT ERICH
IPC: A47L9/00
Filed: 1998-02-05
Abstract: The vacuum cleaner comprises a dust chamber (2) with a cover (7) separated by a wall (5) from the fan chamber (4) with a cover (8). Both covers are sealed against the upper edge of the wall by a seal (9).
Patent DE-19807291-A1 (DE)
Title: Method of operating a motor vehicle with a hybrid drive with an electric motor and an internal combustion engine
Inventor: ZANDER ANDRE
IPC: B60L50/15
Filed: 1998-02-20
Abstract: The method involves determining the instantaneous vehicle position (X) with a position sensor and comparing it with stored  data in a street or area map to determine what type of traffic environment the vehicle is in.  The corresp. operating mode of the hybrid drive is set for the partic. traffic environment.  The traffic environment can be town traffic (16,18,20), long-distance traffic or country traffic. An Independent claim is also included for
Patent DE-19809833-A1 (DE)
Title: Switch system for energy supply and distribution
Inventor: ERMISCH JOCHEN
IPC: H02B1/24
Filed: 1998-02-27
Abstract: The system has releasable connection lines between convertor devices and their protective devices. The convertor devices and protective devices each have clamp terminal strips for holding the connection lines. A measurement current equivalent to the operating current of the convertor devices is fed via the connection lines to a protective-device side measurement resistor. The convertor devices (WE) are each realised by current and/or voltage sensor devices (SE). The clamp connector strips (KW), of both the convertor devices and the protective devices (SG), are each formed by sensor-side system plug sockets (SAS) and device-side system plug sockets (SAG). The connection lines (VL) are realised by line connectors (LV) whose respective ends are fed to sensor side system plugs (SSS) and device-side system plugs (SSG). The measurement resistor (RM), arranged on the protective device side, is replaced by a sensor-side load resistor (RB).
Patent DE-19813179-A1 (DE)
Title: Internet-telephone with telephone acting as client for Internet applications
Inventor: VEKENS ALEXANDER VAN DER
IPC: H04M1/253
Filed: 1998-03-25
Abstract: The Internet-telephone includes a telephone which has an electronic memory and a processor. Entries can be carried out via the telephone using the keypad, microphone and loudspeaker.  The telephone can be extended in its functionality using additional memories and processors so that the telephone can act as a client for Internet applications. Preferably, the a connection set-up to the Internet can be controlled using the telephone. Applet software can be loaded to the telephone via the Internet.
Patent DE-19814563-A1 (DE)
Title: Portable kit for erecting temporary animal stalls
Inventor: GRIESER FRITZ
IPC: E04H15/44
Filed: 1998-04-01
Abstract: The kit comprises high-grade more expensive and relatively heavy primary support elements and primary connectors making up a basic frame whilst lighter and cheaper secondary support elements and secondary connectors complete the frame into a stall with canvas skin. The primary connectors fit with contact pressure and locking mechanisms to ensure secure connection. The material of the primary elements and connectors is selected and its profiled body shaped so that the mathematical product of axial surface inertia moment of the second degree and the modulus of elasticity of this material is more than 1000 MN times mm squared.
Patent DE-19815317-A1 (DE)
Title: Verfahren zum Verschweißen von Blechen
Inventor: HORNIG JOHANN
IPC: B23K26/144
Filed: 1998-04-06
Abstract: Um Aluminiumdünnbleche, wie sie im Kraftfahrzeugbau für den Außenhautbereich verwendet werden, schnell und prozeßsicher zu verschweißen, wird erfindungsgemäß vorgeschlagen, sie mit Hilfe eines Laserstrahls zu verschweißen und Zusatzwerkstoff zuzuführen, wobei der Zusatzwerkstoff mit Hilfe eines Trägergases zugeführt wird und beide Ströme von einem Schutzgasmantel umhüllt werden.
Patent DE-19815668-A1 (DE)
Title: Improved polymerase chain reaction method used to reduce the number of false results
Inventor: HERRMANN BERND
IPC: C12Q1/686
Filed: 1998-04-08
Abstract: A polymerase chain reaction (PCR) method which includes the step of thoroughly heating the reaction vessel, before adding the sample, at a temperature and for a time sufficient for thermolysis of nucleic acid impurities, is new. An Independent claim is also included for a PCR vessel made of a material that is stable to at least 350oC.
Patent DE-19815943-A1 (DE)
Inventor: SPINDLER JOERG
IPC: G01N33/543
Filed: 1998-04-09
Abstract: The invention relates to a method for erythocytic blood group determination, whereby commercially available disposable microtiter plates with a pointed bottom are used to an advantageous effect. Albumin is added to the antiserum in such a way that the concentration of albumin amounts to 0.05-2.2 mg/ml, preferably 0.2 1.0 mg/ml. This process corresponds to a traditional sedimentation method without any centrifugal phase or sample shaking phase. Sample preparation can be easily automated, especially when known types of pipetting machines are used. Sedimentation images show a clear difference between positive and negative reactions. Evaluation, especially in the case of photometric optical evaluation of sedimentation images, is easy from a technical point of view and the inventive method can be automated in a reliable manner. As a result it is possible to obtain a high sample through-flow with very few errors for a low cost in terms of material outlay.
Patent DE-19819826-A1 (DE)
Title: Semiconductor laser diode has a p-type gallium arsenide substrate
Inventor: NISHIGUCHI HARUMI
IPC: H01S5/00
Filed: 1998-05-04
Abstract: A semiconductor laser diode has a p-type GaAs substrate bearing a lower p-type AlGaAs cladding layer, an active layer and an upper n-type AlGaAs cladding layer formed of AlxGa1-xAs (x  \-0.4) with a charge carrier concentration of  <= 6\*10<17> cm<-3>. A semiconductor laser diode has (a) a p-type GaAs substrate; (b) a p-type semiconductor region including a lower p-type AlGaAs cladding layer on the substrate; and (c) an n-type semiconductor region which includes an upper n-type AlGaAs cladding layer and which is formed over an active layer on the p-type semiconductor region. The upper cladding layer has a light confinement region over the entire active layer surface and a ridge portion for current concentration and injection into a laser oscillation region of predetermined width in the active layer and is formed of AlxGa1-xAs (x = \-0.4) with a charge carrier concentration of  <= 6\*10<17> cm<-3>.
Patent DE-19821911-A1 (DE)
Title: Communication system access control method
Inventor: HIRSCH LUCIAN
IPC: H04L29/06
Filed: 1998-05-15
Abstract: The method involves forming a coded operator password by means of secret information sent by an agent (OMC1). The password is formed by a manager (NMC1) and is transmitted together with an operator name (opna) between the manager and agent. An operator access authorisation is checked by the agent using the coded received operator password and the operator name.  The result of the check is transmitted to the manager by the agent. Preferably, the same coding algorithm (MD5) is used for the authentication procedure by the agent and the manager.
Patent DE-19828311-A1 (DE)
Title: Hydraulisch dämpfendes Motorlager
Inventor: BUNGART ERNST
IPC: F16F13/10
Filed: 1998-06-25
Abstract: Hydraulisch dämpfendes Motorlager mit zumindest teilweise von elastischen Wänden begrenzten, fluidgefüllten Kammern trennenden, begrenzt auslenkbaren Membran, mit mindestens einem die Kammern verbindenden Kanal, wobei die Lagercharakteristik durch eine Vorkehrung einstellbar ist, wobei die Vorkehrung aus einer Zusatztragfeder besteht, welche mit der Wandung einer der Kammern eine Zusatzkammer bildet, wobei eine der Kammern mit der Zusatzkammer über eine steuerbare Strömungsverbindung verbindbar ist.
Patent DE-19828849-A1 (DE)
Title: Fuel injection valve with integrated spark plug for direct injection of fuel into combustion chamber of IC engine and its ignition
Inventor: RIEGER FRANZ
IPC: F02M57/06
Filed: 1998-06-27
Abstract: A fuel injection valve has an integrated spark plug (1) for direct injection of fuel into a combustion chamber of an IC engine and to ignite the fuel injected into the combustion chamber. There is a valve body (7) which forms a sealing seat together with a valve closing body (10) which at least one outlet opening (12) adjoins at an end face of the valve body facing the combustion chamber. There is a housing body (2) insulated from the valve body. At least one ignition electrode (70) is provided on the housing body in order to generate a spark discharge between the valve body and the ignition electrode. The ignition electrode and the valve body are shaped so that the spark discharge takes place between the end face of the valve body facing the combustion chamber and the ignition electrode. The end face of the valve body facing the combustion chamber and/or the ignition electrode has/have an edge (74-92) near the outlet opening in order to fix the position of the spark discharge at the end face of the valve body in reproducible fashion relative to the position of the outlet opening.
Patent DE-19830488-A1 (DE)
Title: Cleaning device for cylinders of printing presses
Inventor: SEEFRIED KARL-HEINZ
IPC: A46B13/00
Filed: 1998-07-08
Abstract: The cleaning device has at least one washing roll which can be moved up to and away from the cylinder. This roll is in the form of a brush roll (1). Cleaning fluid can be sprayed onto it from a spray jet (6). The roll is covered in alternating straight and corrugated bristles (2,3), in 50-50 proportion. The corrugation length of the corrugated bristles produce four amplitudes of 1.7 cm each, with an amplitude depth of about 0.5 mm. All the bristles may be made of polyamide.
Patent DE-19830861-A1 (DE)
Title: Verfahren zur Verstellung des Regnerbildes einer Beregnungsvorrichtung und Beregnungsvorrichtung
IPC: B05B3/16
Filed: 1998-07-10
Abstract: Bei einer als Viereckregner ausgebildeten Beregnungsvorrichtung, die eine gerade Düsenreihe mit einer Vielzahl von Düsen mit richtungsverstellbaren Düsenachsen hat, ist es möglich, die Düsenachsen von Einzeldüsen kollektiv relativ zueinander zu verkippen. Eine bevorzugte Ausführungsform hat ein fächerartiges Regnerbild, wobei die Strahlen des Fächers symmetrisch oder asymmetrisch auseinandergezogen oder zusammengeführt werden können. Die Fächerränder können unabhängig voneinander eingestellt werden.
Patent DE-19832813-A1 (DE)
Title: Connection frame for carrying traffic over road works comprises middle frame of reinforced concrete with weight of 200 tons and ramp frames on each side with a gradient of 1 in 10
Inventor: STRUNCK HERMANN
IPC: E01D15/133
Filed: 1998-07-20
Abstract: The total length of the connection frame is 106.3m. Under the frame in a length of 47.9m a space is provided with a free height of 2.42m.
Patent DE-19835152-A1 (DE)
Title: Automatic anchor alarm for ship has switch between anchor and fixing weight used for operation of alarm signal source onboard ship upon detection of anchor drift
IPC: B63B21/22
Filed: 1998-08-04
Abstract: The anchor alarm uses a switch positioned between the anchor and a fixing weight, which drops at a slower rate than the anchor, coupled via a signal cable to an alarm signal source onboard the ship. The signal cable is supported above the anchor and the fixing weight, e.g. at a distance of 1m, by a float, which may contain a radio transmitter for communication with the alarm signal source.
Patent DE-19838502-A1 (DE)
Title: Standard-measurement container for transport of goods or for living or office space
Inventor: MEYER HELMUT
IPC: B65D90/02
Filed: 1998-08-25
Abstract: The container has two long walls, two side walls, a roof and a bottom.  The two long walls (10, 11) consist of edged sheets or steel sheet components with inner edging at top and bottom.  The roof (12) is fixed to the edged parts in the roof region.  Boards (13) rest on the edged sheets in the floor region.  Doors and windows can be made in the endface sides.
Patent DE-19838755-A1 (DE)
Title: IC engine fuel injection nozzle has thin-walled, cylindrical portion of shielding sleeve provided with region which is press fit on free end of nozzle neck
Inventor: JEHLE ERICH
IPC: F02M61/14
Filed: 1998-08-26
Abstract: The nozzle (2) is received in a receptacle (3) formed by a portion of the cylinder head wall (6) and a screwed-in insert sleeve (4). The neck (8) of the nozzle is protected by a nozzle shielding sleeve (13) e.g. of copper, having a collar (12) by which it is clamped between bearing surfaces (10,11) of the nozzle and of the insert sleeve respectively, leaving an annular space (21). The thin-walled, cylindrical portion (14) of the sleeve has a region (16) spaced from the neck and a region (17) which is press fit on the free end of the neck.
Patent DE-19841017-A1 (DE)
Title: Water-removal medium for treating porous upper surfaces, particularly glass, contains two silicone oils of different viscosity
Inventor: HORSCH MANFRED
IPC: C03C17/30
Filed: 1998-09-08
Abstract: Water-removal medium for treating porous upper surfaces comprises a 10-12C aliphatic/aromatic hydrocarbon mixture and an active agent comprising at least two silicone oils of different viscosity.