baber/WOPTO huggingface dataset:
Patent EP-0332301-A2 (EP)
Inventor: KUBINEC JAMES J
IPC: H03K17/16
Filed: 1989-02-16
Abstract: A circuit is provided which modifies a digital drive signal to produce a time variant drive signal for appli­cation to a gate of a bus driver transistor. The circuit's purpose is to reduce the amplitude of ringing on a bus, due to rapid discharging of current from the bus, in order to prevent unintentional triggering of devices connected to the bus. A P-channel MOS transistor (60) and N-channel MOS transistor (50) are connected so that the digital drive signal (V G ) is simultaneously applied to the source of the P-channel MOS transistor (60) and to the drain of the N-channel MOS transistor (50). The gate of the driver transistor (10) is connected to the drain of the P-channel MOS transistor (60) and the source of the N-channel transistor (50). The width-to-length ratio of the channels of the P-channel (60) and N-channel MOS (50) transistors, and the gate voltages, are chosen so that application of a drive signal to the circuit causes the N-channel MOS transistor (50) to rapidly apply a limited drive signal to the gate of the driver transistor (10) and causes the P-channel MOS transistor (60) to apply a gradually increasing drive signal voltage to the gate of the driver transistor (10). By choosing the proper width-to-length ratios and gate voltages, the time variant drive signal applied to the gate of the driver transistor (10) will not produce objectionable ringing on the bus when the bus is intended to be at a low level.
Patent EP-0330452-A2 (EP)
Inventor: CALHOUN CLYDE D C O MINNESOTA
IPC: C09J7/20
Filed: 1989-02-22
Abstract: Electrically conductive elements on two substrates can be electrically interconnected by an adhesive tape containing electrically conductive equiax particles that are individually positioned in the adhesive layer in a predetermined pattern. Each particle is harder than the elements it is to interconnect, so that hand pressure causes the particles to penetrate into the elements, thus creating a reliable electrical connection. Particularly useful particles are glass beads having a metallic coating that is from 0.1 to 2 µm thick.
Patent EP-0343906-A2 (EP)
Inventor: OHSAWA MITSUO C O PATENTS DIVI
IPC: G01R23/165
Filed: 1989-05-22
Abstract: In a spectrum analyser, an input signal applied to an input terminal (1) is divided by a filter circuit (2) into a plurality of frequency bands, the signal level of each of the divided frequency bands is detected, and the signal levels of frequency bands situated between the divided frequency bands are calculated, for example by arithmetic operating circuits (10A to 10I), from the detected signal levels of the divided frequency bands adjacent thereto. The detected signal levels of the divided frequency bands and the calculated signal levels of the frequency bands between the divided frequency bands are all displayed, for example as respective bar graphs (l1 to l19) on a display device (7), so that the frequency characteristic of the input signal can be readily observed.
Patent EP-0349227-A2 (EP)
Inventor: TAKEUCHI TATSUO
IPC: G03G9/087
Filed: 1989-06-26
Abstract: A transparent laminate film, including at least a first transparent resin layer comprising a transparent resin having a heat-resistance, and a second transparent resin layer disposed thereon comprising a transparent resin, wherein the transparent resin of the second transparent resin layer has a compatibility with a binder resin of a toner to be fixed thereon, and has a large elasticity than that of the binder resin of the toner at a fixing temperature of the toner.
Patent EP-0359414-A2 (EP)
Inventor: STEPHENS WILLIAM FRANK NOEL
IPC: G02B5/18
Filed: 1989-08-18
Abstract: A scale (10) for use with scale reading apparatus has grooves (14) spaced along its length at a pitch P each groove is made with a shape or depth variation along its length to provide a scatter mechanism for breaking up the ordered diffraction pattern which would otherwise be generated by the grating structure defined by the grooves. Methods of making the scale involving, inter alia, applying a transverse vibration to the cutting tool during the groove cutting operation are disclosed. 
     Also disclosed is the combination of the scale with a scale reading apparatus consisting preferably of a light source for illuminating the scale and a readhead for receiving light reflected from the scale and for providing a signal indicative of relative movement between the scale and readhead. The readhead acts as a spatial filter.
Patent EP-0380862-A2 (EP)
Inventor: DI PALMA GIORGIO
IPC: A61M5/142
Filed: 1989-10-06
Abstract: A disposable infusing device for ambulatory patients comprises a disk-shaped cover plate (18) and a disk-shaped impeller plate (32) which are interconnected by a stretched membrane (38) that joins the edge of the cover plate with the edge of the impeller plate. The effect of the membrane is to urge the plates into juxtaposition. A fluid port is formed on the cover plate for fluid communication through the port (2) with a collapsible fluid chamber (36) established between the plates. Fluid when injected into the chamber between the plates, is subsequently expelled through the port for controlled infusion to a patient as the membrane pulls the plates toward each other to collapse the chamber.
Patent EP-0371820-A2 (EP)
Inventor: EVANS RONALD MARK
IPC: C12Q1/6897
Filed: 1989-11-30
Abstract: Disclosed are novel hormone and hormone-like receptors wherein the trans-activation transcription domain(s) is modified in terms of position and/or copy number or otherwise versus parent receptor, such novel receptors having increased trans-activation transcription activation properties surprisingly superior to the parent receptor. Also disclosed are the recombinant methods and means for preparing such receptors and assays based upon the use of such receptors for screening and identifying putative materials that can affect such receptors and/or for the expression via induced transcription of a reporter or other desired, preferably heterologous gene or DNA product.
Patent EP-0373858-A2 (EP)
Inventor: O'DONOVAN GERALD VICTOR
IPC: B62K19/22
Filed: 1989-12-11
Abstract: A method for use in joining together tubular elements (12, 23) in the production of cycle frames or cycle forks is disclosed wherein an essentially blind annular space (26) is provided to receive a tube end (27) into engagement therewith. Adhesive is applied to the space and, on curing of the adhesive, a secure bond is obtained between the inner and outer surfaces of the tube and the structure defining the annular space.
Patent EP-0375417-A2 (EP)
Inventor: TAKETOMI TAKANAO
IPC: C07C229/22
Filed: 1989-12-21
Abstract: A process for preparing an optically active carnit­ine ester represented by formula (I):
      wherein R is lower alkyl and X is halogen, comprises asym­metrically hydrogenating a γ-trimethylammonium-3-oxobutanoic ester halide represented by formula (II):
      wherein R and X are as defined above, in the presence of a ruthenium-optically active phosphine complex as a catalyst. An optically active carnitine ester of any desired isomerism can be obtained through simple operation in high yield at high optical purity. The substrate used is readily available.
Patent EP-0337981-A2 (EP)
Inventor: GARNWEIDNER PETER
IPC: B60S1/68
Filed: 1989-04-11
Abstract: Scraper for granular material and stones, the scraper being rotatably mounted on the vehicle body and a cleaning wedge projecting between the twin wheels and a roller which rolls on the running faces of the wheels being provided on both sides. <IMAGE>
Patent EP-0378184-A2 (EP)
Inventor: SAMEJIMA HISASHI
IPC: B41F17/00
Filed: 1990-01-10
Abstract: A thermal transfer machine comprising a freely rotatable belt attachment roller (2) onto which an endless belt (A) can be removably attached with the surface to be imprinted facing outwardly, a freely rotatable thermal roller (6) placed so as to be movable toward and away from said belt attachment roller (2), a pair of support arms (9) placed parallel to each other across an open space so that said thermal roller (6) is positioned between them, and a marking paper support (8) which has securing fixtures (11) for stretching the marking paper (B) across the space between the support arms (9) and which is capable of moving in a reciprocating motion in the front-to-back direction of the thermal roller (6). With said thermal roller (6) pressed against the belt (A) on said belt attachment roller (2) by a pressing apparatus, the marking paper support (8) is moved at the same speed as the peripheral velocity of the thermal roller (6) in the direction of the tangent of the thermal roller (6) occurring at the contact surface between the thermal roller (6) and the belt (A) by the drive apparatus which turns the thermal roller (6).
Patent EP-0379052-A2 (EP)
Inventor: VOLPEL STEFAN DIPL-ING FH
IPC: F16F9/02
Filed: 1990-01-10
Abstract: According to an illustrative example of the invention, a gas spring comprises a cylinder (1), a piston rod (3) extending through one end of the cylinder and a piston (4) connected with the piston rod within the cylinder. A pressurized gas is contained within the cylinder. A container (2) surrounds the cylinder. An annular space (7) is defined between the cylinder and the con­tainer. The cylinder is subdivided by the piston rod into two working chambers (15,16). The annular space (7) is subdivided by a separating ring (8) into two axially adjacent sections (11,12). Radial bores (13,14,17,18,19) through the cylinder extend between the working chambers and the two sections of the annular space. Each of the two sections of the annular space defines together with allocated radial bores flow paths adapted to interconnect the working chambers across the piston, such that in respect ive axially adjacent movement ranges of the piston, the working chambers are interconnected with each other, and in an intermediate standstill range between said axially adjacent movement ranges, the flow connection between the two working chambers is interrupted.
Patent EP-0383026-A2 (EP)
Title: Drive gear, particularly for operating the glass panes of motor vehicle windows
Inventor: BALZARINI VITTORIO
IPC: E05F11/40
Filed: 1990-01-16
Abstract: The drive gear (1) includes a flexible shaft (4) sliding in a fixed guide (2) and having an end (6) connected to the glass pane (5). The guide (2) includes an internally threaded sleeve (8) adapted to engage the flexible shaft (4), which in turn has an outer threading (4a) so that a rotation of the sleeve (8) corresponds to an axial translation of the flexible shaft (4), the sleeve (8) being actuated by a motor (3). The flexible shaft (4,6) is monolithically made of plastics by injection molding.
Patent EP-0391055-A2 (EP)
Inventor: SUSAK DAVID M
IPC: H03F1/02
Filed: 1990-02-22
Abstract: In an output stage (34) of an operational amplifier comprising first (42) and second (40) NPN output transistors, a circuit (44) is coupled between the positive supply conductor (14) and the collector of the first NPN transistor (42) for providing a boosted base current drive thereto as a function of the load current sourced from the emitter of the first NPN transistor (42) to the output (60) of the operational amplifier. The circuit (44) senses the collector current flowing through the first NPN transistor (42) for increasing the base current drive thereto as the collector current increases.
Patent EP-0388843-A2 (EP)
Inventor: HAINES JOHN GREGORY
IPC: G07B17/00
Filed: 1990-03-19
Abstract: A technique for reconfiguring in the field external devices in communication with postage meters, the external devices having an external device feature set that may be selectively enabled or disabled by software. The technique provides security so that any changes to the feature set is authorized. The meter (10) is capable of being put into an I/O configuration mode by suitable entries from the keyboard (14), in which mode it is inhibited from printing postage. The meter (10) has a storage register (26) for a current or old I/O configuration number (IOCN), and can receive a desired new IOCN via keyboard (14) entry. The meter (10) calculates an encrypted I/O configuration request code that depends on the new IOCN. The I/O configuration request code, when communicated to a data center computer (25) along with other validating identification information, is checked by the data center computer (25) which computes the I/O configuration request code using the same algorithm. 
If the two values agree, the data center ccmputer (25) calculates an encrypted I/O configuration enable code that depends on the meter serial number. This is communicated to the meter (10), which receives the I/O configuration enable code and also calculates a I/O configuration enable code using the same algorithm as the data center computer (25). If the I/O configuration enable codes agree, the meter (10) overwrites the old IOCN with the new IOCN, thereby reconfiguring the meter (10) and the external devices.
Patent EP-0389923-A2 (EP)
Inventor: JOHN THOMAS DR
IPC: B41F31/02
Filed: 1990-03-20
Abstract: The ink rail device for use in an inking unit of a printing machine has an ink chamber, which can be attached to a support and connected to an ink supply, two rail elements, which bound the ink chamber at the top and the bottom and can be applied to a screen roller, and two side walls bounding the ink chamber laterally. In order to allow a simple construction and easy replaceability, the ink chamber, including the side walls and the rail elements, is produced as an integral moulding and can be connected to the support by means of a plug connection. 
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Patent EP-0395872-A2 (EP)
Inventor: RADEMACHERS JAKOB DR
IPC: C09C1/24
Filed: 1990-03-23
Abstract: The present invention relates to granular black iron oxide pigment which is stable to handling and free of dispersing auxiliaries, a process for its manufacture and its use.
Patent EP-0397178-A2 (EP)
Inventor: STEPHEN ROBERT L
IPC: A61N1/30
Filed: 1990-05-10
Abstract: A method is disclosed for treating acne, boils and similar skin disorders which are characterized by closed, blocked channels in the epidermis of the skin. The method comprises applying an applicator electrode (4) on the skin (8) of the person to be treated; providing a relatively small amount of water (40) containing dissolved ions in contact with the applicator electrode (4) and the affected tissue; applying a dispersive electrode on the skin (8) of the person to be treated; applying a voltage differential to the applicator (4) and dispersive electrodes such that the applicator electrode (4) has a negative charge and the dispersive electrode has a positive charge; producing hydroxyl ions at the applicator electrode (4) to develop a strongly alkaline solution therein, and driving the ions down the channels (26) of the affected tissue by iontophoresis; continuing the application of the voltage differential to the applicator (4) and dispersive electrodes for a time sufficient to disrupt the blockage of the channels (26) in the affected tissue and to establish drainage from the channels (26).
Patent EP-0415285-A2 (EP)
Inventor: CARSWELL ROBERT
IPC: C08G18/00
Filed: 1990-08-24
Abstract: A compatibilized active hydrogen compound-­alkylene glycol composition comprises components (A) a relatively high equivalent weight material having an average of at least about 1.8 active hydrogen-containing groups per molecule and a weight of from 500 to 5000 per active hydrogen-containing group; (B) an alkylene glycol which is incompatible with component (A) at the relative proportions thereof present in the composition; and (C) a compatibilizing amount of at least one thiourea compound. Preferably the composition also contains at least one transition metal salt of a carboxylic acid wherein said metal is selected from Groups I-B, II-B, V-A, IV-B, V-B, VI-B, VII-B or VIII of the Periodic Table of the Elements. The composition preferably also contains a sufficient quantity of at least one amine group-containing material that the salt is soluble in said composition. Such compositions are useful in producing polyurethanes, particularly polyurethanes   exhibiting relatively short demold times and good mold release properties. Unlike prior art compositions, the present compositions can be stored without substantial loss of activity.
Patent EP-0382307-A2 (EP)
Inventor: KRAHL BURGHARD DIPL-ING
IPC: G05F1/32
Filed: 1990-02-05
Abstract: 2.1. A pulsed power supply device having a controllable switch in the primary circuit has a magnetic amplifier choke which can be premagnetised by a regulator, the core of which choke as a rule consists of amorphous material. The power supply device is intended to have a high stability and a precise and rapid regulation characteristic with respect to the magnetisation of the magnetic amplifier choke, even at high switching frequencies of the controllable switch. 2.2. It is proposed that the magnetic amplifier choke have a core of ferrite material and that the regulator supply a positive or negative control current for regulating the magnetisation of the magnetic amplifier choke. 2.3. Power supply devices. <IMAGE>
Patent EP-0413401-A2 (EP)
Inventor: PRYCE ROBERT JOHN
IPC: C07D317/26
Filed: 1990-08-15
Abstract: A process for preparing a ketone of the general formula:
      in which R¹ and R² each independantly represent a C₁₋₆ alkyl or C₆₋₁₂ aryl group, and R represents an alkyl, aryl, aralkyl, heterocyclic or carboxylic group, which process comprises reacting a carboxylic acid having the general formula I in which R represents a hydroxy group with a lithium compound to form the corresponding lithium salt of the carboxylic acid; 
  reacting the lithium salt so-obtained with thionyl chloride to yield an acyl chloride having the general formula I in which R represents a chlorine atom; 
reacting the acyl chloride so-obtained with a secondary amine to yield an amide having general formula I in which R represents a secondary amino group; and 
reacting the amide so-obtained with an organometallic reagent to yield the ketone having general formula I.
Patent EP-0398483-A2 (EP)
Inventor: CHAPMAN LEONARD T
IPC: F16F15/00
Filed: 1990-03-29
Abstract: A shock and vibrations isolator (14) having a support plate (26) with opposing ferrules (60,62) slidably mounted on spaced apart guide bars (18,20). The guide bars (18,20) have a slight radius of curvature in a plane perpendicular to the plane of the support plate (26). The radius of curvature is selected to be collinear with the direction of the shocks. Springs (48) are provided to bias the support plate (26) to a lateral center position. A mounting plate (40) disposed over the support plate (26) is slidably attached to spaced apart guide rails (22,24). The mounting plate (40) is also biased towards a longitudinal center position by springs (48). The ends of the guide rails (22,24) and the ends of the guide bars (18,20) are joined at connecting blocks (28,30,32,34).
Patent EP-0429200-A2 (EP)
Inventor: WILDEY CHRISTOPHER GEORGE
IPC: H04H20/67
Filed: 1990-10-31
Abstract: A network of transmitters for providing broadcast signal coverage of a group of contiguous reception areas, there being one transmitter site within each reception area. Two or more directional transmit antennas at each site cover the reception area by the use of different frequencies or polarisations (F1,F2). Reception of the broadcast signal is by means of a directional receive antenna. Interference between neighbouring sites is reduced by arranging the orientation of the antennas at adjacent sites (E,G) in such a way that a receiver located (D) on a line through the sites (E,G) will be within the beam angle of one antenna (F2) at the nearer site (E), but outside the beam angle of a potentially interfering antenna (F2) at the further site (G). For this purpose, at adjacent sites on the line the transmit antennas have orientations which deviate from a reference orientation in opposite directions, but with equal magnitude (α). The network may have a triangular lattice structure, with two 180-degree sector antennas at each site, or a square lattice structure with four 90-degree sector antennas at each site.
Patent EP-0414602-A2 (EP)
Inventor: VUORINEN TIMO
IPC: D21B1/34
Filed: 1990-08-20
Abstract: The pulping space, whereto the paper pulp to be purified is conducted, is provided with e.g. a rotor unit and a connecting screenplate. According to the method, the pulping space (2) enclosed by a solid jacket (1,3,4) is divided into a primary and a secondary space (5,12) by means of a partition wall construction (13). Both the primary and the secondary space (5,12) are provided with separate rotor units (6,15) and perforated screenplates (8,16) in connection with said rotor units (5,16). The paper pulp to be purified is conducted into the primary space (5) and a connection between the primary and secondary spaces (5,12) is arranged within the partition wall construction (13).
Patent EP-0382661-A2 (EP)
Inventor: MIR JOSE MANUEL C O EASTMAN KO
IPC: H01L39/24
Filed: 1990-02-06
Abstract: A flexible electrically conductive article is disclosed comprised of an organic film, a conductive crystalline cuprate layer, and a release layer that together form a flexible electrically conductive assembly. The article is prepared by forming a conductive cuprate layer on a refractory substrate with the release layer interposed. After the cuprate layer is formed, the organic film is bonded to it, permitting the cuprate layer to be stripped intact from the substrate with the organic film. A crystal growth accelerating agent can be associated with the cuprate layer during its formation to minimize the heat energy required for crystallization.
Patent EP-0444459-A2 (EP)
Inventor: ZUERCHER JOSEPH CHARLES
IPC: H01H13/705
Filed: 1991-02-08
Abstract: Pivotal movement of a switch actuator (16) drives a finger (16c,16d) projecting from the actuator against a convexly bowed leaf spring (40), depressing an intermediate portion of the leaf spring to an unstable concave condition. The leaf spring resists the actuator movement, initially with an increasing force but changing to a decreasing force at a predictable point (B) in actuator movement to provide tactile feedback at an operator (22) affixed to the actuator. The leaf spring is a flat beam. The spring force and point of changeover can be readily and predictably varied during manufacture by selecting springs (40) having different widths, thicknesses or other variable parameters. A modular block (38) holds the spring in the bowed condition and is positioned relative to the actuator finger by a support plate (36). The actuator finger drives the spring against a conductive rubber block (34a,34b), compressing the block against spaced conductors (28d,28e) on a printed circuit (28) to complete the circuit. A plurality of such switches are made in a common package by layering a printed circuit (28), insulator sheet (30), conductive rubber sheet (34) with raised bosses (34a,34b,34c), detent support plate (36) and a plurality of detent blocks (38) with bowed springs (40), between a base (26) and a cover (4). Back lit illumination is provided by a light pipe (42) trapped against the cover as an additional layer. A microprocessor board (52), connected to the internal printed circuit (28), is attached to the switch housing (2) exteriorly of the base (26).
Patent EP-0473157-A2 (EP)
Inventor: ARAKI KENJI
IPC: H01J61/00
Filed: 1991-08-29
Abstract: A low pressure discharge lamp apparatus is disclosed which comprises a low pressure discharge lamp (10) comprised of a discharge tube (11) including a first end (12) and a second end (13) and having electrodes (17 and 19), respectively, and defining a discharge space (15) across these electrodes and a mercury/rare gas sealed in the discharge tube, a lighting circuit apparatus (30) for lightning the lamp by supplying a current to the electrode with a polarity reversed for each half cycle, wherein the lighting circuit apparatus (30) supplies, to the lamp, a current whose peak has a flat waveform for each half cycle and a maximum current value of the current of the flat-peak waveform is restricted to less than a level in which the excitation of mercury atoms is saturated.