baber/WOPTO huggingface dataset:
Patent EP-0399313-A2 (EP)
Inventor: LIPMAN KENNETH
IPC: H02M1/34
Filed: 1990-05-11
Abstract: A novel inverter circuit having symmetrical gate turnoff thyristors (GTO) includes reactive circuit elements for recovering stored energy. The circuit is characterized by a center tapped transformer configured without tightly coupled anti-parallel diodes, thereby allowing for the pre­sentation of reverse voltages to each GTO.
Patent EP-0412422-A2 (EP)
Inventor: SILVIAN SERGIU
IPC: H04B17/00
Filed: 1990-08-01
Abstract: A communication system includes self-test means for automatically testing its performance. The communication system is adapted for use between an implantable device, such as a pacemaker, and an external device, such as the pacemaker's programmer. The communication system includes in the external device a transmitter circuit for transmitting an output signal through an antenna, ana a receiver circuit for receiving an input signal through an antenna. A driver circuit controls the operation of the transmitter circuit. A microprocessor, connected to the driver circuit, controls the information content and timing of the transmitted output signal. A bandpass filter and AM demodulator process the input signal received through the receiver circuit. A multiplexer selectively allows one of a plurality of status signals from throughout the communication system within the external device, including the demodulated signal obtained from the AM demodulator, to be connected to the microprocessor. The self-test means includes means for having the microprocessor generate a test signal that is selectively injected into the transmitter circuit and/or the bandpass filter. The self-test means further includes a switch that selectively allows, as controlled by the microprocessor, either the output signal from the bandpass filter, or the output signal from the transmitter circuit, to be connected to the input of the AM demodulator. In this manner, the injected test signal, or the effects of the injected test signal, may be coupled back to the microprocessor via one of the status signals. The microprocessor then checks the status signals to ensure that a desired performance criteria is achieved. Individual tests may be selectively performed, or a prescribed sequence of several tests may be automatically performed.
Patent EP-0419993-A2 (EP)
Inventor: BERTRAM ROLF DIPL-ING
IPC: G05F1/59
Filed: 1990-09-17
Abstract: When connecting power supply circuits in parallel, a uniform load distribution to the power supply circuits is attempted. It is proposed to provide measuring devices (9) which are constructed and connected to the power supply circuits (SV) in such a manner that measurement signals (UI) corresponding to the output currents (IA) of each power supply circuit can be generated, that an averaging device (10) is provided to which the measurement signals can be supplied and which generates an average-value signal (UI) corresponding to the average value of the measurement signals, and that comparator devices (20) for each power supply circuit are provided which compare the average-value signal with the respective measurement signals and generate a control signal supplied to the respective control input (Se) of a power supply circuit in such a manner that the output voltage (U) of the respective power supply circuit (SV) is raised or lowered when the respective output current (IA) is below or, respectively, above the average value of the output currents. <IMAGE>
Patent EP-0428082-A2 (EP)
Inventor: TAKATORI SUNAO C O EZEL INC
IPC: G06V10/145
Filed: 1990-11-09
Abstract: A 3-dimensional configuration recognition system comprising: 
a means for projecting a checker pattern onto a surface of a solid object; a means for thinning said checker pattern and for generating a thinned checker pattern; a coupled of means for detecting 2-dimensional coordinate of said cross points; and a means for calculating 3-dimensional coordinate of said cross points from said 2-dimensional coordinate and positions of said couple of means.
Patent EP-0431622-A2 (EP)
Inventor: MASAKATSU YAMADA TECHN ENG C O
IPC: B41J17/12
Filed: 1990-12-06
Abstract: A heat transfer recording method and apparatus for recording images onto a recording medium is realized by transferring ink contained in an ink sheet (14) onto said recording medium (11). The apparatus comprises means (71,72) for conveying said ink sheet in both the positive direction and the direction opposite to said positive direction, means (7) for conveying said recording medium, and means (13) for recording images onto said recording medium (11) by acting on said ink sheet (14). The method is characterized in that a determination is made whether or not the length of images recorded onto said recording medium is less than or equal to that of said recording medium (11), and if so, said ink sheet (14) is stopped and said recording medium (11) is conveyed so that an end portion of said recording medium may be positioned at a recording position with said recording means.
Patent EP-0433829-A2 (EP)
Inventor: KUROMATSU AKIO
IPC: B24B53/12
Filed: 1990-12-10
Abstract: A method of dressing for a conductive grindstone (1), a dressing system for this method and a dressing electrode (4) used in this method. According to the preferred embodiment, this method comprises reciprocating a dressing electrode (4), which is formed of a metal having large chemical affinity with the super abrasive grains of the grindstone (1), in a direction being vertical to the moving direction of the grindstone, while the electrode is brought into contact with the ground surface of the grindstone with a predetermined pressure and applying a voltage between the electrode and the grindstone so as to provide a positive pole on the grindstone, while a conductive processing fluid (9) is flown on the portion of the electrode contacting with the grindstone. Therefore, electrochemical action, chemical action, mechanical operation and electro-discharge operation are cooperated in a dressing process.
Patent EP-0390237-A2 (EP)
Inventor: VAN DEURSEN JOSEPHUS HUBERTUS
IPC: C08G67/02
Filed: 1990-03-01
Abstract: Novel copolymers of carbon monoxide with one or more optionally alkyl-substituted cyclopentenes, are obtainable by contacting the monomers with a catalyst composition solution comprising: (a) a palladium compound, (b) an anion of an acid with a pKa of less than 2, and (c) a bidentate ligand containing phosphorus, sulphur or nitrogen, with the proviso that when a bidentate ligand chosen from nitrogen, sulphur or aromatic phosphorus containing compounds is used as component (c), the catalyst composition additionally comprises a meta-dinitrobenzene compound as component (d).
Patent EP-0412657-A2 (EP)
Inventor: BRUNNETT CARL J
IPC: G06T1/00
Filed: 1990-07-11
Abstract: An imaging apparatus and method acquires image data from a non-invasive examination of a subject. The data is transferred among various agents (20, 30, 40, 50, 60. 70) on a data bus (B). A data acquisition agent (20) receives the image data from the non-invasive examination and generates subsequent agent locations and transmits the subsequent agent locations and the packets of image data along the data bus. Various image processing agents (30, 40, 50) each receive packets of data transmitted with that agent's location and performs imaging and processing operations on the data packets generating another agent location and thereafter transmitting the other agent location and process data packets along the data bus. A display agent (60) receives the processed image data packets from one of the image processing agents via the data bus, stores the processed image data packets and communicates the process image data to a man-readable image display (68).
Patent EP-0421704-A2 (EP)
Inventor: BERTIGER BARY ROBERT
IPC: H04B7/26
Filed: 1990-10-01
Abstract: A Telemetry, Tracking and Control (TT&C) system for a satellite cellular communication system utilizing one of the user voice/data communication channels (104,140) to communicate TT&C data with a satellite (58) and through one satellite (52) to other satellites (54). A Global Positioning Receiver (GPS) (118) on board each satellite provides position control signals (124) to the on board satellite control subsystem (122) and the GPS receiver (118) communicates ephemeris information to a ground station (100) through the cellular user data channel (140). The system allows for constant TT&C communication to and from a mobile ground station (50) and to and from any satellite (52,54,58).
Patent EP-0425256-A2 (EP)
Inventor: EKREN DENNIS J
IPC: E06B3/673
Filed: 1990-10-23
Abstract: A method and apparatus for simultaneously filling adjacent sides of a window spacer frame (F) with a desiccant material (D) is characterized by a fill head (18) having a discharge port (56) in communication with a desiccant chamber (20), a releasable clamping device (46,47,49) for clamping the open ends of the adjacent sides in alignment with the discharge port (56), and the pressurization of the chamber (20) with air to force the desiccant material (D) through the discharge port (56) for a time interval (T) necessary to fill the sides of the spacer frame (F). An air conveyor (25) is provided to induce the flow of desiccant material (D) from a reservoir (24) for the purpose of periodically refilling the desiccant chamber (20) when empty, and a filter system (26,29) in the air conveyor (25) will separate the desiccant material from the air stream while permitting the air stream to be exhausted to atmosphere during the filling operation.
Patent EP-0428480-A2 (EP)
Title: Fixation de sécurité à plaque
Inventor: HORN HANS
IPC: A63C9/084
Filed: 1990-11-01
Abstract: La fixation comprend une plaque (1) montée pivotante sur un ski (2) autour d'un axe (3) au moyen d'un pivot (16). La plaque (1) est munie d'un doigt horizontal (25) engagé dans une rainure de baïonnette (28, 29) du pivot (16), avec un jeu vertical, pour retenir axialement la plaque sur son pivot lors de la flexion du ski. La plaque n'est ainsi pas affaiblie par une perforation et le pivot est mieux protégé contre la formation de glace.
Patent EP-0445673-A2 (EP)
Inventor: KEIL GUENTER DR
IPC: C08G69/36
Filed: 1991-03-02
Abstract: Aromatic copolyamides, preparation thereof and structures formed therefrom There are described aromatic copolyamides which are soluble in organic solvents for polyamides and which comprise at least 95 mol % of recurring structural units of formulae   OCArCO A  NHAr'NH B <IMAGE> C  <IMAGE> D  and up to 5 mol % of meta-bonded structural units E and/or F derived from aromatic dicarboxylic acids (E') and/or from aromatic diamines (F'), the sum total of the mole fractions of structural units A+E and the sum total of the mole fractions of structural units B+C+D+F being essentially of equal magnitude. The copolyamides of the present invention can be processed into fibers having high strengths and high breaking extensions.
Patent EP-0452776-A2 (EP)
Inventor: MOLIN STUART B
IPC: H03H11/26
Filed: 1991-04-09
Abstract: First and second complementary input voltages control the flow of current through first and second switches (20,22) (e.g. semiconductors) each respectively connected in first and second control circuits with a first constant current source (24). When the input voltages change, current starts to increase through one of the control circuits to produce increases in the voltage drop across an impedance (32,34) (e.g. resistor) in such circuit. When a particular voltage difference is produced between the impedance voltage and an adjustable biasing voltage, a third switch (26,28) (e.g. semiconductor) closes to produce a first resultant voltage. The resultant delay in the closure of the third switch is dependent upon the adjustable magnitude of the biasing voltage. As the voltage increases across the impedance in the one control circuit, the voltage decreases across an impedance in the other control circuit. This decreasing voltage causes a second resultant voltage to be produced at a fourth switch (28,26) (e.g. semiconductor). The resultant voltages are respectively introduced to fifth and sixth switches (40,42) (e.g. semiconductors) each connected in a circuit with an individual one of second and third constant current sources (44,46). When the resultant voltages change, the particular one of the fifth and sixth switches receiving an increase in current passes a portion of this current through the associated current source and another portion of this current through a coupling member (48) and the other current source. This delays the state of non-conductivity of the switch connected to the other current source. Output voltages further delayed from the input voltages are accordingly obtained from the fifth and sixth switches.
Patent EP-0459223-A2 (EP)
Inventor: FELL BARRY MICHAEL
IPC: B29C53/28
Filed: 1991-05-15
Abstract: Fiber-reinforced thermoplastic honeycomb (2) is prepared in a continuous manner one half cell at a time by laying down a corrugated web of thermoplastic (3), with and without fiber-reinforcement atop a honeycomb, selectively fusing the node-antinode demes (5) and repeating the process until a honeycomb of the desired depth is prepared.
Patent EP-0469315-A2 (EP)
Inventor: MENGEL PETER DR
IPC: G06V30/194
Filed: 1991-07-02
Abstract: The computers used in image processing and detection and operating sequentially, for example expert systems with stored empirical knowledge, have been partially replaced by neuron networks (1, 2) which operate associatively. To use the image recognition, consisting of the extraction (12) of image features (5) and classification (6), for production processes, the processing time must be sufficiently short and the capacity must be adequate. In combination with the use of neuron networks (1, 2), the application of predetermined invariances with respect to the rotation, the translation and the scaling is provided for this purpose. The invariances directly enter into the topology of a neuron network (1, 2), in which certain synapses (19) are established and must thus be treated uniformly for future processes.
Patent EP-0477537-A2 (EP)
Inventor: IMAMURA MAKOTO
IPC: H03K5/13
Filed: 1991-08-22
Abstract: A timing generator which is simple in structure, has high linearity, and can operate at a high speed is realized by varying the equivalent input capacitance of a mirror amplifier. The mirror capacitance is electrically discharged with a constant current in the saturation region and in the linear region of the amplifier. The voltage at the inverting input terminal of the mirror amplifier is compared with a constant value to produce a delay. When the delay is produced in the linear region where the inclination of the ramp waveform is mild, the period of the delay is accurately varied by input data. Therefore, the period of the delay can be set with a high accuracy and a high resolution. In the saturation region where the inclination of the ramp waveform is steep, the voltage is compared with a constant value. Consequently, the generator is made immune to noise even if the delay time is long.
Patent EP-0489230-A2 (EP)
Inventor: DIBBERN PETER DIPL-ING
IPC: B66F9/22
Filed: 1991-08-31
Abstract: Lifting mast, in particular for lift trucks, having a fixed mast, at least one extendable mast section guided on the fixed mast, a load take-up means guided in vertically movable fashion on the mast section, and a mast lifting cylinder arrangement for adjusting the mast section. For the purpose of adjusting the inclination, the lifting mast is mounted pivotably on the lifting-mast holder or the lifting-mast holder is mounted adjustably on a substructure and an inclination drive is connected to the lifting mast or the lifting-mast holder, adjusting the lifting mast or the lifting-mast holder as a function of the pressure in the mast cylinder arrangement. <IMAGE>
Patent EP-0480219-A2 (EP)
Inventor: GANEV DIMITER
IPC: C09K3/14
Filed: 1991-09-20
Abstract: In a method of manufacturing an abrasive wheel for working dried, tempered or unburnt ceramic mouldings, a mixture of abrasive grains, ceramic base grains, plasticising material and inorganic binder is applied by stamping or pressing to a metal carrier to give a layer of abrasive material, and compacted and dried at temperatures of up to 160 DEG C.
Patent EP-0498926-A2 (EP)
Title: Hydraulisch bedämpftes Gummilager zur Abstützung eines Maschinenaggregats
Inventor: BURGER STEFAN
IPC: F16F15/03
Filed: 1991-10-08
Abstract: Hydraulisch bedämpftes Gummilager zur Abstützung eines in einer schwingenden Bewegung befindlichen Maschinenaggregats (1) auf einem Träger, bei dem einem flüssigkeitsgefüllten Arbeitsraum ein mit einem elektromagnetischen Antrieb versehener Aktuator zugeordnet ist, wobei der Antrieb mit einer Ansteuerung versehen ist, die mit einem ersten Signalgeber (2) des Aggregats signalleitend verbunden ist und die einen Signalgenerator (3), eine Kennfeldsteuerung und einen Leistungsverstärker (22) als Endstufe umfaßt. <IMAGE>
Patent EP-0446994-A2 (EP)
Inventor: PESSINA GAETANO
IPC: B60L3/12
Filed: 1991-03-07
Abstract: A method and a device according to such method for monitoring a railway traction system comprising monitoring means, controlled by a manual or automatic drive system, controlling and coordinating a plurality of individually driven wheels disposed in opposing coaxial pairs on either side of the vehicle. The method comprises, for each pair of coaxial wheels of said plurality, the steps of cyclically measuring representative quantities of the mechanical torque temporarily developed by the motors, comparing such quantities and disconnecting both motors from the electric power supply whenever the result of the comparison shows a difference greater than a previously established value. The method advantageously also comprises, for each motor, the further steps of cyclically memorizing the temporary value of a parameter of the motor, commanding a variation of such parameter by a small pre-established quantity, calculating the value that such controlled parameter should reach as a result of such variation, comparing the result of the calculation with the effective value reached and disconnecting the power supply to the motor whenever the result of such comparison is not equal to or less than a pre-established quantity. 
     The device according to the method comprises a general monitoring system which through lines of communication (12) communicates with actuating devices (13), one for each motor-driven wheel. The individual actuating device (13) comprises a local monitoring device (14) connected, for the exchange of control and information signals, to a power system (15) operating an electric motor (16) whose driving shaft is connected, by means of a mechanical reduction unit (18), to a traction wheel (19). Moreover, the motor shaft is also kinematically connected to a tachymetric indicator (17), which transmits to the local monitoring device (14) a feedback signal proportional to the speed of the motor.
Patent EP-0448214-A2 (EP)
Inventor: ISHIKAWA TAKASHI C O INTELL PR
IPC: G03G15/08
Filed: 1991-02-12
Abstract: A developing device for an electrophotographic recorder includes an open-topped container (8) having a toner inlet port; a toner cartridge (19) which can be detachably mounted on the container (8) so that its toner discharge port is opposed to the toner inlet port and supplies toner through the ports to the container (8), and a toner cartridge cover (16) which is connectible at one end to the container (8). The toner cartridge (19) is slid from the container (8) on to the cover (16) so that any toner left in the cartridge (8) does not leak out between the cartridge (8) and the cover (16) to soil the surrounding area.
Patent EP-0503186-A2 (EP)
Inventor: KANEKO STEVEN T
IPC: H01H13/712
Filed: 1991-07-03
Abstract: A keypad structure includes a stiff backing element and an elastomeric cover that have between them a first membrane on which is defined a shorting conductive layer, a second membrane on which is defined a main conductive layer, the second membrane on which the main conductive layer is defined as being adjacent the elastomeric cover rather than the stiff backing element as in the prior art. A third membrane provides spacing between the main and shorting conductive layers when the keypad is not compressed. A elastomeric interconnect can then be used to connect exposed contacts on the main conductive layer with other circuitry in an instrument utilizing the keypad.
Patent EP-0469788-A2 (EP)
Inventor: KONDO KENSHI
IPC: H05K13/00
Filed: 1991-07-25
Abstract: A method and apparatus for reflow-soldering of print circuit boards are disclosed. A print circuit board having electronic parts with lead wires having low temperature resistance alone or together with electronic part of high temperature resistance can be soldered according to the reflow-soldering method in a specifically designed heating zone involving plural preheating chambers and a reflowing chamber while making difference in temperature between the obverse surface and the reverse surface of the board without causing any soldering failure and any environmental pollution.
Patent EP-0487316-A2 (EP)
Inventor: CARGILL ALLEN N
IPC: G07D7/20
Filed: 1991-11-20
Abstract: A document size detection device detects the size of documents (N) such as non-US currency and comprises a housing (33), a plate (35) mounted in the housing past which each document is moved, and LED photoelectric sensors (37,38) positioned along and across the plate (35) for sensing the size of each document and for initiating a signal indicating the length and width of each document. 
     The signals are transmitted to a counting machine, which counts the sheets in response to said signal, and thereby counts the value of the sheets where the latter are currency notes.
Patent EP-0442788-A2 (EP)
Inventor: CORDONNIER ALAIN
IPC: B07B7/00
Filed: 1991-02-08
Abstract: A pneumatic centrifugal separator comprises guide vanes disposed along the generatrices of a fictitious cylinder having a vertical axis, the guide vanes being adapted to impart to a gas stream entering the fictitious cylinder a rotary motion about the vertical cylinder axis, and a rotor coaxially positioned in the interior of the fictitious cylinder, the rotor being equipped with a first set of vertical blades distributed uniformly along the periphery of the fictitious cylinder and a second set of blades disposed between the blades of the first set and the cylinder axis. A gas stream and particulate material to be sorted is introduced between the guide vanes and the rotor, and the gas stream charged with particles of dimensions smaller than predetermined dimensions and sorted out of the particulate material is drawn out of a central outlet. The second set of blades is arranged to guide the streams of gas coming through channels between adjacent vertical blades of the first set to the central outlet.
Patent EP-0479681-A2 (EP)
Inventor: OKI MASAMI
IPC: B21B1/26
Filed: 1991-10-03
Abstract: A method of carrying out hot pressure welding of hot steel stock is disclosed, which is effective for achieving a continuous hot rolling line. The hot steel stock to be joined is subjected to butt joining or lap joining in a reducing atmosphere under pressure while under hot conditions.
Patent EP-0495389-A2 (EP)
Inventor: BAUSCH PAUL DIPL-ING FH
IPC: B62D7/14
Filed: 1992-01-09
Abstract: In each case an electromagnetically operated lock (8) is provided on the control elements (6) for steering the rear wheels of a motor vehicle. Said lock is constructed in such a way that when current is not flowing through it it restricts the maximum possible displacement path of a control rod (12) of the control element (6) to the degree which is necessary for steering at relatively high travel speeds. At low travel speeds, the lock (8) is released so that larger wheel locking angles are then possible for parking. 
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