baber/WOPTO huggingface dataset:
Patent EP-0402876-A2 (EP)
Inventor: WATANBE NAOTO INTELLECTUAL PRO
IPC: G21K1/04
Filed: 1990-06-12
Abstract: A radiographic apparatus includes an X-ray generator (1) for radiating X-rays, two slit members (3, 4) sequentially arranged to oppose the X-ray generator, a subject (8) being arranged between the slit members (3, 4), and each of the slit members having at least one linear slit for narrowing down X-rays to obtain a slit-like X-ray beam, a slit member moving unit (5, 6) for moving the slit members in such a manner that an X-ray tube focal point and the slits of the slit members are always aligned with each other, and a cassette film (9) for two-dimensionally recording a slit-like X-ray beam obtained by causing X-rays to pass through the object and the linear slits of the slit members.
Patent EP-0426959-A2 (EP)
Inventor: FRIEDERICHS OTTO
IPC: B60T13/66
Filed: 1990-08-25
Abstract: 1. Method for the braking of a vehicle train with pressure-actuated brakes and arrangements for implementing this method. 
<??>2.1 In the case of a known method of this type an overrun impact occurs due to the varying rapidity of the brake pressure build-up in the individual vehicles of the vehicle train in the non-stationary braking phases. 
<??>2.2 In order to reduce the overrun impact, the invention in one embodiment proposes advancing of the joint braking signal transmitted by the one individual vehicle to the other individual vehicle in the vehicle train by a predetermined value, and in another embodiment advancing of the brake pressure in the other individual vehicle in relation to the joint braking signal by a predetermined value if, during the preceding brake actuation, the overrun impact has exceeded a predetermined tolerance band. 
<??>2.3 Preferred sphere of application is on vehicle trains of a motor vehicle and one or more trailers or semi-trailers. 
<IMAGE>
Patent EP-0379264-A2 (EP)
Inventor: COLLETTE WAYNE N
IPC: B29C49/64
Filed: 1987-05-25
Abstract: A preform (10) for use in blow molding a returnable transparent refillable container, said preform being an injection molded member formed of a polyester, said preform having an elongated body (16) for forming a container body and being closed at one end and open at the opposite end, said preform open end having a neck finish (12) and said elongated body having a portion (14) adjacent said neck finish (12) tapering in wall thickness for forming a container shoulder portion, said closed one end (20) being defined by a bottom having a generally hemispherical outer surface, characterised in that said closed one end (20) of said preform body comprises a cylindrical container base-forming flute portion (22) having a greater wall thickness relative to the wall thickness of said preform body (16).
Patent EP-0404229-A2 (EP)
Inventor: DE GIER GERTRUDIS MARIA GERARD
IPC: E02F3/96
Filed: 1990-06-14
Abstract: The invention relates to a device for breaking objects consisting of concrete or similar material, which device is provided with a pair of jaws having teeth which are pivotable relative to each other about a pivot pin. The device is designed to be coupled to the end of the arm of an excavator or the like by means of a hinge pin. A strut is provided between a first jaw and the arm of the excavator, whilst a setting cylinder coupled to the arm of the excavator with one end is coupled to the second jaw with its other end, in such a manner that the second jaw can be pivoted towards and away from the first jaw by means of said setting cylinder. The device is thereby provided with a coupling piece to be coupled to the end of the arm of the excavator by means of the hinge pin, whilst the first jaw is connected with the coupling piece in a point which, when seen in the longitudinal direction of the hinge pin, is located between the hinge pin and the point of attachment of the strut to the first jaw. The device is furthermore provided with a further strut to be provided between the coupling piece and a point near the point of attachment of the strut to the arm of the excavator.
Patent EP-0389122-A2 (EP)
Inventor: HADLEY LEMOYNE F
IPC: B41J5/30
Filed: 1990-02-28
Abstract: A reproducing system (20) uses an array of photodetector elements (22) to sense an image from an original document page (26) and a corresponding array of printing elements to print the image onto a duplicate document page (28). Mirror-imaging between the original and duplicate documents is avoided by electrical (84) or mechanical elements (30) that couple the photodetector and printing arrays.
Patent EP-0410812-A2 (EP)
Inventor: MCLEVIGE DANIEL J
IPC: G05B19/414
Filed: 1990-07-27
Abstract: A multiplexed hydraulic control system in which high force margins for the multiplexer are achieved by employing hydraulic oscillators as the multiplexer driving means. The multiplexer (20) is typically in the form of a hydraulic cylinder (25) having an input port (40) and a plurality of output ports (27,28,41-43), with an operator (26) in the cylinder (25) for individually connecting the input port (40) to the output ports (27,28,41-43). The hydraulic oscillator (30) is mechanically coupled to the multiplexer operator (26), and oscillation of the former causes oscillation of the latter to sequentially connect the input (40) to each of the outputs (27,28,41-43). Various means are taught for initiating reversal of the oscillator (30) and controlling the oscillation speed.
Patent EP-0415640-A2 (EP)
Inventor: GARDNER ROBERT C
IPC: F21V5/00
Filed: 1990-08-22
Abstract: A lamp has a reflective cup (24) with a light emitting device (26) in the bottom of the cup. A transparent material having an index of refraction n fills the cup and extends to a hemispherical surface with radius R and an equator parallel to the opening of the cup. The reflective walls of the cup project substantially all of the light within a cutoff cone having an included half angle equal to the Brewster's angle of the transparent material. The center of the hemispherical lens surface is spaced from the rim of the opening of the cup a distance R/n. Thus, the opening of the cup is the locus of aplanatic points of the equator of the hemisphere. Most rays from within the cup are incident on the hemispherical lens surface at no more than the complement of the Brewster's angle. Thus, minimal light losses occur at the interface between the transparent medium and air. An aplanatic image is formed outside the hemispherical lens of a virtual source comprising a hemispherical surface extending through the rim of the cup opening. Such optics may also be used for a light accepting device. These principles may also be applicable to an elongated cavity with a semicylindrical lens of radius R and edges spaced from the edge of the cavity a distance R/n.
Patent EP-0410948-A2 (EP)
Inventor: KORENBLIT IZYA
IPC: F16J15/40
Filed: 1990-06-20
Abstract: It is an object of the invention to provide protection means (18) for a static seal (17) in a centrifugal pump having a dynamic seal arrangement (12). 
     Another object of the invetion is to provide apparatus for the use with a dynamic seal (12) with a minimum number of auxiliary impellers (14) and for protecting the static seal (17) from contaminants. 
     According to the broader aspects of the invention, a flushing protection arrangement (18) is provided between the static seal (17) and the auxiliary impeller (14), wherein a flushing fluid to protects the static seal (17) when the pump is not operating.
Patent EP-0452650-A2 (EP)
Inventor: DREPS DANIEL M
IPC: H04B10/00
Filed: 1991-03-02
Abstract: An amplifier circuit comprises first and second gain cells (18A, 18B) connected in cascade. Each of the gain cells comprises first and second common emitter differential transistors (30A, 32A; 30B, 32B), a current source (44) coupled to the emitters of the transistors, a first plurality of forward biased, series diodes (34A - 37A) connected between a power supply terminal (40) and a base of the first transistor (30A), and a second plurality of forward biased, series diodes (64A - 67A) connected between the power supply terminal (40) and a base of the second transistor (32A). A collector of the first transistor (30A) of the first gain cell (18A) is connected to the base of the first transistor (30B) of the second gain cell (18B), and a collector of the second transistor (32A) of the first gain cell (18A) is connected to the base of the second transistor (32B) of the second gain cell (18B). Because of the low inherent resistance of the biasing diodes, the operating speed of the amplifier is large, and the current amplification can be large without exceeding the power supply voltage. The current source limits the gain for high level signals without causing saturation of the transistors and therefore, does not comprise operating speed. The gain of each cell equals the numbers of diodes connected to the base of the transistor until the level of the current source.
Patent EP-0452734-A2 (EP)
Inventor: GUTSCH HENRIK DR
IPC: H03G3/32
Filed: 1991-04-03
Abstract: The invention relates to a hands-free control circuit with a speech control circuit which, depending on the signal levels on a transmitting line and on a receiving line and depending on the output signals of a speech detector, in each case activates a damping circuit provided in the transmitting line and in the receiving line, where the speech detector is connected to a microphone. According to the invention, a psophometric circuit is provided which is connected to both the output of the speech detector and to the microphone. Furthermore, circuit means are provided to amplify the transmission and reception signals, which circuit means are activated by the psophometric circuit, depending on the background noise level occurring at the microphone in the speech pauses, in such a way that the transmission and reception signal levels are increased when the background noise levels rise and, conversely, are lowered when the background noise levels fall. This enables control of the amplification of the transmission and reception signals depending on the current background noise level occurring at the microphone, whereby the transmitting and reception signals can be adjusted in optimum fashion according to the acoustic conditions. <IMAGE>
Patent EP-0455099-A2 (EP)
Inventor: BERTSCH ROBERT J
IPC: C08F36/00
Filed: 1991-04-23
Abstract: A non-functional liquid rubber is prepared by the solution polymerization of vinyl monomers. The polymer may be a homopolymer or a copolymer. As a copolymer the preferred monomers are a conjugated diene and a vinyl substituted nitrile such as acrylonitrile or methacrylonitrile. A non-functional initiator is employed that is either an azo initiator or a peroxide initiator.
Patent EP-0460455-A2 (EP)
Inventor: BAUMGARTNER EHRENFRIED DR
IPC: C08F287/00
Filed: 1991-05-23
Abstract: Rubber-modified, high-impact acrylonitrile/butadiene/styrene (ABS) moulding compositions, as obtained by polymerisation of styrene and acrylonitrile in the presence of a preformed rubber, dissolved in monomeric styrene and acrylonitrile and optionally a solvent, containing, as rubber, a styrene-butadiene block copolymer and at least one further polymer which is compatible with styrene-butadiene block rubber or its polystyrene component and is incompatible with polystyrene-acrylonitrile.
Patent EP-0471386-A2 (EP)
Inventor: FRISCH DAVID C
IPC: B32B37/18
Filed: 1985-10-31
Abstract: A new improved method for the production of printed wiring conductors on thermoplastic base material is described. The thermoplastic base material contains less than 0.1% of volatiles having boiling points below 245°C and the conductors are firmly anchored by carefully solvating the base material surface to such degree that it flows against and adheres to the edges of the conductors, but insufficient to permit the solvated base material to flow onto the conductors.
Patent EP-0488174-A2 (EP)
Inventor: MORISHITA MASAKAZU
IPC: H04N5/374
Filed: 1991-11-26
Abstract: A photoelectric converting device provided with a control electrode area of a semiconductor of a first conductive type and at least two main electrode areas of a semiconductor of a second conductive type different from the first conductive type, and capable of accumulating photo-generated carriers in the control electrode area. The control electrode area becomes substantially depleted at the resetting operation.
Patent EP-0458378-A2 (EP)
Inventor: TERLOUW TEUNIS
IPC: C07C5/27
Filed: 1991-05-03
Abstract: The invention relates to a catalyst composition, suitable for use in a process for the isomerization of C₈-alkyl aromatics comprising Group VIII metal and an alkali-metal containing zeolite and a binder material as support, the amount of alkali metal being between 2 and 3% by weight on the zeolite, to a process for the preparation of such catalyst composition and to its use in the isomerization of C₈-alkyl aromatics.
Patent EP-0489473-A2 (EP)
Inventor: KLUSENER PETER ANTON AUGUST
IPC: C08G67/00
Filed: 1991-11-29
Abstract: Novel catalyst compositions which contain a Group VIII metal and a phosphorus bidentate ligand with the general formula (R²)(R⁴)P-R³-P(R²)(R⁴) in which R² and R⁴ are identical or different optionally polar substituted monovalent aliphatic hydrocarbyl groups and in which R³ is a divalent organic bridging group which in the bridge connecting the two phosphorus atoms contains four atoms, of which at least two are carbon atoms and among which no two atoms are present which together form part of a single cyclic structure. 
     They are particularly suited to the preparation of polymers of carbon monoxide and C₃₊ α-olefins.
Patent EP-0450957-A2 (EP)
Inventor: UEHARA KATSUHIRO
IPC: C07F7/08
Filed: 1991-04-04
Abstract: A process of producing a methylphenyltrisiloxane having the following general formula:
       
 wherein R¹ and R² may be the same or different and are each a methyl or phenyl group, the process comprising the step of reacting:
     (A) methyldiphenylsilanol, with   (B) a silazane compound having a diorganosilazane unit having the following formula:
      wherein R¹ and R² are as defined above. According to the process, colorless and odorless methylphenyltrisiloxanes can be obtained easily, safely and economically, without any special deodorizing or decoloring step.
Patent EP-0463860-A2 (EP)
Inventor: DUNK MICHAEL P
IPC: G01R31/58
Filed: 1991-06-25
Abstract: A faulted circuit detector (12,22) has an electrically isolated and remotely positioned indicator (14) which indicates fault currents in a monitored conductor (18). When a fault of a predetermined magnitude is detected, a light pulse is transmitted from the detector (12,22) to the indicator via a fibre optic cable (16) where, upon receipt, the pulse is converted to an electrical pulse causing the indicator to indicate a "fault" state. A reset circuit (56) within the indicator resets the indicator at regular intervals to the "normal" state as long as a predetermined minimum voltage is present on the monitored conductor. A test circuit (34,48,50) is also provided to allow service personnel to field test the device with the monitored conductor in an energized state.
Patent EP-0465248-A2 (EP)
Inventor: NASH JAMES CARL
IPC: G06F12/06
Filed: 1991-07-04
Abstract: A memory expansion scheme (90) is provided which permits a program to automatically cross memory bank boundaries, without user intervention. A memory bank address register (94) stores a value corresponding to a selected memory bank (i.e. Bank 0), in a 4-bit subfield (K-Field). In the preferred embodiment, the K-Field is implemented using six (6) bank number registers, each of which is coupled to the corresponding address register, (92) to form a 20-bit (extended) logical address. During an effective address calculation, in the index addressing mode, a 16-bit logical offset address, stored in an offset register, (96) is added to the 20-bit (extended) logical address, by an adder (98) in the ALU. (69) The adder (98) transfers a 20-bit physical address onto an address bus, (44) via an address buffer. (56) When the calculated address crosses a memory bank boundary, the upper four (4) address bits (A₁₆-A₁₉) are automatically updated, thereby enabling the program to cross a memory bank boundary without user intervention.
Patent EP-0469782-A2 (EP)
Inventor: UENO RYUJI
IPC: A61P27/02
Filed: 1991-07-24
Abstract: A use of a prostacyclin compound for the manufacture of a medicament for treatment of cataract.
Patent EP-0484063-A2 (EP)
Inventor: FUKUSAKI EIICHIRO NITTO DENKO
IPC: C12P17/02
Filed: 1991-10-25
Abstract: A process for preparing optically active epoxy alcohol which is characterised by the steps of adding carboxylic anhydride to racemic epoxy alcohol of formula 1 in the presence of a hydrolase in an organic solvent, esterifying (-)-form of the epoxy alcohol preferentially to give an epoxy ester of formula 2, separating optically active epoxy ester of formula 2 from optically active epoxy alcohol of formula 3 to yield optically active epoxy alcohol of formula 4, so that epoxy alcohol of formula 1 in high purity can be obtained easily and safely at ordinary temperature.
Patent EP-0468831-A2 (EP)
Inventor: STAMM REBECCA
IPC: G06F9/38
Filed: 1991-06-26
Abstract: A pipelined CPU executing instructions of variable length, and referencing memory using various data widths. Macroinstruction pipelining is employed (instead of microinstruction pipelining), with queueing between units of the CPU to allow flexibility in instruction execution times. A wide bandwidth is available for memory access; fetching 64-bit data blocks on each cycle. A hierarchical cache arrangement has an improved method of cache set selection, increasing the likelihood of a cache hit. A writeback cache is used (instead of writethrough) and writeback is allowed to proceed even though other accesses are suppressed due to queues being full. If a non-recoverable error detected by ECC circuits in the cache, an error transition mode is entered wherein the cache operates under limited access rules, allowing a maximum of access by the system for data blocks owned by the cache, but yet minimizing changes to the cache data so that diagnostics may be run. Separate queues are provided for the return data from memory and cache invalidates, yet the order or bus transactions is maintained by a pointer arrangement. The bus protocol used by the CPU to communicate with the system bus is of the pended type, with transactions on the bus identified by an ID field specifying the originator, and arbitration for bus grant goes one simultaneously with address/data transactions on the bus.
Patent EP-0470940-A2 (EP)
Inventor: TEWARI MOHAN PRASAD
IPC: C01D3/08
Filed: 1991-06-26
Abstract: The invention concerns a method of preparing brine from sodium chloride salt containing one or more water-soluble impurities having an aqueous dissolution rate lower than that of sodium chloride, the method comprising the steps of:
     (a) forming a salt bed in a vessel, the vessel including a grid for supporting the salt bed;   (b) wetting at least a portion of the salt bed with a flow of water;   (c) forming a brine solution by at least partially dissolving the wetted portion of the salt bed in the water;   (d) forming small solid particles in the wetted portion of the salt bed, said small particles containing one or more water-soluble impurities but substantially no sodium chloride;   (e) passing the brine and the small solid particles containing soluble impurities through the grid and out of the salt bed;   (f) separating the brine from the small solid particles.   
     The invention also concerns a device for making brine by dissolving salt in water, which device comprises a vessel (3) containing a grid support (4), means (2, 23) for supplying solid salt (1), means (32, 42) for supplying water, means (14, 15) for the outflow of brine, and means (9) for removing undissolved salt particles (8) at the bottom of the vessel (3).
Patent EP-0498309-A2 (EP)
Inventor: DERR FROWIN
IPC: H04B10/61
Filed: 1992-01-30
Abstract: Optical heterodyne receivers for the coherent demodulation of lightwaves phase-modulated in several steps need optical phase control as homodyne receivers and have a high electrical processing bandwidth as heterodyne receivers. To reduce the outlay, a very low intermediate frequency is used in the electrical receiver section according to the invention, which, on the one hand, does not require any optical phase control and, on the other hand, needs an electrical processing bandwidth of the order of the baseband bandwidth. For this purpose, an optical 90 DEG  hybrid, which supplies orthogonal electrical signals following corresponding opto-electrical transducers is used in the optical receiver section. To implement the receiver further, these signals are digitised and all further processing steps such as orthogonal demodulation, phase control and difference decoding are done digitally. The core of this digital receiver section is a look-up table which directly obtains the current phase between received and local lightwave from the orthogonal signals as an arctan function. Due to the possible integration of the functions, the overall concept provides an inexpensive heterodyne receiver for coherent television distribution engineering.
Patent EP-0518353-A2 (EP)
Inventor: AOYAMA HIROKAZU C O YODOGAWA W
IPC: C07C17/275
Filed: 1992-06-12
Abstract: A fluorinated compound of the formula: 
 
 
 
        R-CCl₂CF₂CF₃   (I) 
 
 
 
in which R is a perfluoroalkyl group, a perchloroalkyl group, a polyfluoroalkyl group, a polychloroalkyl group or a polychloropolyfluoroalkyl group, each having at least one carbon atom is prepared at a high selectivity and a high yield by reacting tetrafluoroethylene with a compound of the formula: 
 
 
 
        R-CFCl₂   (II) 
 
 
 
in which R is the same as defined above in the presence of a Lewis acid.
Patent EP-0546268-A2 (EP)
Inventor: SCHULTE REINHARD
IPC: C02F1/32
Filed: 1992-09-30
Abstract: In a purification process for purifying a fluid contaminated at least by organic constituents, in which the fluid (1) is subjected at least to an evaporation (6) during formation of a concentrate (10) and a condensate (7), of which one is subjected to irradiation (11) with UV light, to improve the efficiency of the irradiation stage, it is provided that the condensate (7) is subjected to the irradiation with UV light and the pH of the fluid, directly before the evaporation, is adjusted (3) to a value such that the pH of the condensate is in the range 4-8, preferably 4.5-7, and the concentrate (10), which contains the separated-off solids, is conducted away. <IMAGE>
Patent EP-0523822-A2 (EP)
Inventor: TRULL THOMAS DR
IPC: G01N21/3504
Filed: 1992-07-15
Abstract: Spectral pyroelectric infrared engine sensor and associated methods. Through a suitable orifice in the engine wall or manifold wall, the cyclic combustion processes are observed by evaluating the infrared radiation by means of a pyroelectric detector. The gas duct normally required, the temperature radiator and the mechanical chopper are replaced according to the invention by the cyclic combustion process and the hot radiation of the combustion chamber. At the same time, the combustion chamber serves as the gas duct. The combustion mixture (2) in the combustion chamber (1) is shown at the instant of being ignited. The gas mixture (3) produced after ignition emits infrared radiation (4) which reaches the pyroelectric detector unit. <IMAGE>