baber/WOPTO huggingface dataset:
Patent EP-0292790-A2 (EP)
Inventor: MATYAS STEPHEN MICHAEL JR
IPC: G09C1/00
Filed: 1988-05-11
Abstract: A method of controlling the use of securely transmitted information in a network of stations in which each potentially cooperating station includes a cryptographic facility (10) which securely stores a master key and in which, for each transmission between a pair of stations, a cryptographic key result is provided for each station of the pair by a generating station which is either one of the pair or a station external to the pair under a cryptographic protocol common to the network, the cryptographic key results for the transmission having a random component notionally particular to the transmission, a master key variant component characteristic of the protocol and a target station component either particular to the stations individually or as a pair, wherein, in response to a generating command invoked in the generating station for establishing a controlled use secure transmission between a designated pair of stations, the generating station generates the cryptographic key result for each designated station, accesses the control value common to the system for the permitted operation for each of the stations for the particular transmission, combines the control value with the common key result or each individual key result and causes the appropriate combined key result to be established in each station of the pair for the transmission, and wherein the cryptographic facility (10) in each station is arranged, when an operating command is invoked to perform a designated operation with respect to such securely transmitted information, to automatically abort such operation unless it matches the control value.
Patent EP-0305719-A2 (EP)
Inventor: KOBSA IRVIN RAYMOND
IPC: G21C9/02
Filed: 1988-07-20
Abstract: A centrifugal brake is disclosed for a con­trol rod drive within a boiling water reactor (BWR). Control rods within reactors have dual insertion mechanisms including a motor drive and a hydraulic drive. These drives are concentrically mounted within a cylindrical enclosed pressure chamber. The motor drive is typically of the ball screw type wherein a motor drive rotating threaded shaft through the bottom of the cylindrical chamber. The rotating threaded shaft drives a ball screw nut within a guide tube which urges a hollow piston upwardly. The control rod, connected to the upper end of the hollow piston is in turn urged upwardly into the reactor. The hydraulic drive utilizes hydraulic pressure to move the hollow piston and control rod independently from the ball screw drive upwardly for insertion into the reactor. Where loss of hydraulic system pressure occurs, both the weight of the control rod and pressure from the reactor can cause reversal of the ball screw drive and an undesired retraction of the control rod from the reactor. Accordingly, a centrifugal brake is installed in between the motor and ball screw threaded shaft con­centric to a conventional coupling. The brake includes at least the one disc rotatably attached to the ball screw shaft having at least one and preferably two arcuate pawls pivoted on the disc. The pawls are main­tained in a retracted position with respect to the disc by conventional detents. A stationary housing with lugs for engagement with the pawls are provided sur­rounding the disc. When the shaft of the ball screw rotates, responsive to pressure induced control rod   withdrawal, the brake disc commences to rotate with increasing angular acceleration. This angular acceleration continues until the centrifugal force acting on the pivotal arcuate pawls of the brake overcome the force of the detents. When the force of the detents is overcome, the pawls pivot outwardly with respect to the disc. The pawls engage the stationary lug and immediately arrest ball nut shaft rotation and therefor control rod withdrawal. Upon motor controlled rod insertion, the stationary lugs reset the pawls to their respective detents and normal control rod insertion can occur. Consequently, unintentional control rod withdrawal under reactor pressure is pre­vented during hydraulic casualties to the control rod drive while the capability of motor and the ability to reset the brake following inadvertent actuation insertion is preserved.
Patent EP-0306832-A2 (EP)
Inventor: LANGECKER GUNTER DR-ING
IPC: B29C39/22
Filed: 1988-09-01
Abstract: A mixing head 21 for at least two plastic components forming a foam during reaction and having a mixing chamber 23 is designed in such a way that an optimum aftermixing of the component mixture before it can pass into the mould is accomplished with low constructional outlay. The plastic components are fed through inlet openings 24, 25 to the mixing chamber 23 from which the component mixture passes through an outlet 31 and a guide channel 29 into the mould. Both the mixing chamber 23 and the guide channel 29 adjoining the outlet opening 31 of the said chamber are assigned an axially displaceable pull-back ram or cleaning rod 26. It is decisive for the desired mode of operation that mixing chamber 23 and guide channel 29 are in axially-parallel alignment with each other, that there is at least one aftermixing or swirling chamber 38a, 38b between the outlet opening 31 of the mixing chamber 23 and the inlet opening 32 of the guide channel 29 and arranged essentially transversely to the axes of mixing chamber 23 and guide channel 29, and that in this arrangement the length and/or the position of the aftermixing or swirling chamber 38a, 38b can be changed in relation to the mixing chamber 23 and guide channel 29. <IMAGE>
Patent EP-0318711-A2 (EP)
Inventor: BOCK THOMAS
IPC: B60R7/08
Filed: 1988-11-03
Abstract: The compartment is subdivided into individual sections by partitions and is arranged above the passenger's head in the longitudinal direction of the aircraft, and each of its individual sections can be closed by a flap. 
<IMAGE>
Patent EP-0299581-A2 (EP)
Inventor: SHIN YONG-IN
IPC: H03K19/088
Filed: 1988-07-12
Abstract: A select buffer circuit includes a first inverter circuit (14), a second inverter circuit (16) connected to the first, and a circuit for charging and discharging the base of an inverter transistor in the second inverter circuit from a node in the first inverter circuit. The charging and discharging circuit includes a Schottky diode (134) connected to the inverter transistor, a Schottky transistor (132) connected in series with the diode, and a resistor (130) for coupling the base of the Schottky transistor to the node in the first inverter circuit. A bipolar multiplexer including the select buffer circuit offers the advantage of an improved output waveform.
Patent EP-0311200-A2 (EP)
Inventor: HOGENBOOM ERIC HENRICUS MARIA
IPC: C08J5/06
Filed: 1988-09-30
Abstract: Composite materials of polyolefin filaments of high molecular weights, in particular ultrahigh molecular weights, of especially more than 600,000 g/mol, and/or structures produced therefrom, and rubber, the adhesion of these filaments or the structures produced therefrom to the rubber being effected by means of a polymer of low molecular weight and low melting point as an adhesion promoter, which polymer is heated to a temperature above its melting or softening point and, in the softened or molten state, bonds well to both the polyolefin filaments of high strengths and to the rubber, without the higher melting or softening points of the polyolefins of high molecular weight being reached and their high tensile strength and moduli thus being impaired.
Patent EP-0276079-A2 (EP)
Title: Methods of forming ceramic fibers and dual ceramic/non-ceramic fibers, and dual fibers of non-circular cross-section
Inventor: FAIN CHARLES C DR
IPC: D01F9/08
Filed: 1988-01-13
Abstract: C-shaped carbon or polymeric fibers, e.g. melt spun from mesophase pitch, are used as micro-­molds to form nested dual fibers comprising the said carbon or polymer fibers and ceramic fibers. By wetting the shaped fibers in a wet chemical precursor for the ceramic, and subsequently heat treating in an oxygen-free environment, ceramic fibers of various compositions can be formed in the fibers used as micro-molds, thus for instance yielding carbon-ceramic nested fibers, in which the ceramic fibers are formed with non-circular transverse cross-sectional configurations. The fibers used as micro-molds can be removed, leaving only the ceramic fibers, by burning away the non-­ceramic fibers in an oxygen-containing environment or by mechanically stripping them from the ceramic fibers.
Patent EP-0284353-A2 (EP)
Inventor: BRAUN DAVID L C O MINNESOTA MI
IPC: A62B18/10
Filed: 1988-03-22
Abstract: The exhalation valve (14) of a respiratory face mask (10), while taking up only a small area, can afford extraordinarily low pressure drop for easy breathing if constructed with a valve seat (16) having a seal edge (18) that defines an orifice (21) and also forms a parabola in the plane bisecting the mask (10). Preferably the seal edge (18) forms a rectangle as viewed against the direction of composite fluid flow (34) through the valve (14), and a flexible flap (24) is attached to a bridge (19) across the center of the orifice at the apex of said parabola, each end of the flap (24) being free to be lifted to allow fluid to flow through the valve (14).
Patent EP-0293204-A2 (EP)
Inventor: HUGHES JAMES HOWARD
IPC: B29C48/15
Filed: 1988-05-26
Abstract: An extrusion machine includes an extruder screw (3) driven by a screw drive motor (4), and a line drive (8) which controls the line speed of the extruder. A central control unit generates a first voltage signal to control the screw drive motor (4) and a second voltage signal to control the line drive (8). A linearising unit (12) is programmed with predetermined voltage data comprising values for a selected one of either the first or second voltage signals, and corresponding values of output voltages. The linearising unit (12) repeatedly calculates the value of the selected voltage signal, compares the calculated value with the predetermined voltage data, and supplies a linearised output voltage to either the screw drive motor (4) or the line drive (8). The predetermined voltage data can be generated by measuring the diameter of the extrudate produced by the extruder for different values of the first and second voltage signals.
Patent EP-0294989-A2 (EP)
Inventor: NAKANISHI SHOJI C O SEIKO INST
IPC: H01L29/792
Filed: 1988-06-01
Abstract: A non-volatile semi-conductor memory device comprises a substrate (11) of a first conductivity type, source and drain regions (12,13) formed in a surface portion of the substrate in spaced apart relation to one another to define therebetween a channel region, the source and drain regions being of opposite conductivity type to that of the substrate, and a floating gate electrode (15) disposed over a surface of the semi-­conductor substrate (11) between the source and drain regions (12,13) to a gate insulating film (14). A control gate electrode (17) is disposed above and electrically insulated from the floating gate electrode (15) to an insulating film (16). An erase electrode (19) is disposed above and electrically insulated from the floating gate electrode (15) to a tunnel insulating film (18), the tunnel insulating film being comprised of an oxidized nitride film formed by thermal oxidation of a nitride film.
Patent EP-0296803-A2 (EP)
Inventor: MORIMOTO KIYOSHI
IPC: B65G53/58
Filed: 1988-06-21
Abstract: An improved method and the related system for pneumatically transporting powdered or granular materials stored in an airtight storage container(3) to a collector(6) through a transport pipe(5) in the form of a lengthy column(P) in high density and at a slow speed by the use of pressurized gas. The method of the invention comprises the steps of stopping feeding of the pressurized gas when the whole of powdered or granular materials corresponding to final batch contained in the storage container(3) are sent into the material transport pipe(5), simultaneously discharge internal pressure of the storage container(3) through a gas decompressing means(B), inserting a transport plug(14) from the base end of the material transport pipe(5), and carrying forward the transport plug(14) at a slow speed by feeding pressurized gas from the base end of the transport pipe(5).
Patent EP-0298746-A2 (EP)
Inventor: KATHIRGAMANATHAN POOPATHY
IPC: C08G65/02
Filed: 1988-07-07
Abstract: An inorganic powdery or granular material which is coated with a coating of an inherently conductive polymeric material, such as a conductive polypyrrole or substituted polypyrrole, a polythiophene or substituted polythiophene, a polyaniline or substituted polyaniline, a polyethylene oxide or an aniline copolymer. The material which is coated is talc, mica, wollastonite, calcium carbonate, aluminium hydroxide, clay or hydroxyapatite.
Patent EP-0301743-A2 (EP)
Inventor: SALZMAN CATHERINE ANN C O EAST
IPC: G01N35/00
Filed: 1988-07-19
Abstract: There are described the apparatus and a process for using it, wherein a wash station (50) is provided apart from an incubator (22). Means (60, 100) are provided for moving a test element to the wash station before or in the middle of its incubation, and from the wash station to the incubator after it is washed.
Patent EP-0316155-A2 (EP)
Inventor: MIYA SHINYA
IPC: C08F4/76
Filed: 1988-11-09
Abstract: Transition-metal compounds hve the formula:
      in which M is a zirconium or hafnium atom; Y is a silicon or germanium atom; the groups R¹  n  -C₅H 4-n  and R¹  q -C₅H 4-q  each represent an unsubstituted or substituted cyclopentadienyl group,  n  and  q  each being 0 or an integer of from 1 to 4 provided that  n  and  q  are not simultaneously 0 or 4, the respective substituents R¹ being the same or different and each being a hydrogen atom, a silyl group or a hydrocarbon radical; the respective groups R² are the same or different and each is hydrogen atom or a hydrocarbon radical; and the respective groups X are the same or different and each is hydrogen or halogen atom or a hydrocarbon radical.   
     Catalysts for the stereoregulator polymerization of olefins comprise a compound of formula (I) together with an aluminoxane of the formulae;
      in which  m  is an integer of from 4 to 30 and R³ is a hydrocarbyl radical.
Patent EP-0307331-A2 (EP)
Inventor: CELETTE GERMAIN
IPC: B21D1/14
Filed: 1988-09-09
Abstract: This apparatus comprises a straightening device (2) whose front end is mounted on feet and whose rear end is associated with a lifting mechanism (10). The rear end of this straightening device is equipped with removable ramps (16) and with removable platforms (17) extending them. On the upper face of the straightening device is mounted, longitudinally displaceable between the platforms (17) and the front end, a carriage (27) intended to receive the front axle of the vehicle. 
<??>Application to the loading and unloading of a vehicle on a straightening device. 
<IMAGE>
Patent EP-0302044-A2 (EP)
Inventor: GARNWEIDNER PETER
IPC: B60J5/04
Filed: 1988-06-13
Abstract: Door reinforcement for protecting in the case of lateral collisions on motor vehicles in which at least one tensile brace is fastened in the door structure on preferably parallel carriers. …<IMAGE>…
Patent EP-0330019-A2 (EP)
Inventor: SCHLOEGL GUNTER DR
IPC: C08K3/26
Filed: 1989-02-09
Abstract: The biaxially oriented film, which is made from high-purity polyolefin-based raw material for films for use in the electrical sector, in particular propylene polymers, and is suitable for use as an electroinsulation film, contains carbonate particles as neutralisers. These preferably have an absolute particle size of less than 10 microns, a mean particle diameter of less than 0.1 micron, a specific surface area of greater than 30 m<2>/g and a whiteness of greater than 90%. The film is used as a dielectric in capacitors and has improved electrical properties.
Patent EP-0333203-A2 (EP)
Inventor: SASADA SHIGERU DAINIPPON SCREE
IPC: G02B6/42
Filed: 1989-03-17
Abstract: A linear light diffusing apparatus is formed of a transparent cylindrical rod. A white layer is formed on one end of the outer periphery of the cylindrical rod along the longitudinal direction thereof, and a plurality of grooves whose cross section is saw tooth shaped are formed on the outer periphery on the opposing side along the longitudinal direction. The light entering from one end of the transparent cylindrical rod is irregularly reflected by the white layer in the surface intersecting the longitudinal direction, and the irregularly reflected light is refracted by the saw tooth shaped grooves to be linearly condensed at a prescribed position intersecting the longitudinal direction.
Patent EP-0333221-A2 (EP)
Inventor: NAKASHIMA SHOZABURO
IPC: C21D8/12
Filed: 1989-03-17
Abstract: The present invention provides a grain-oriented electrical steel sheet having a thickness of up to 0.17 mm and excellent product magnetic characteristics. The present invention is characterized in that a silicon containing acid-soluble Al, N and Sn is used as the starting material, the N and acid-soluble Al contents in the slab are adjusted to 0.0050 to 0.0100% and {(27/14) x N (%) + 0.0035} to {(27/14) x N (%) + 0.0100}%, respectively, the thickness of the hot-rolled sheet is adjusted so that the thickness reduction ratio at the one-stage cold-rolling is 85 to 92%, and the Nas AlN content in the hot-rolled steel sheet is controlled to 0.0005 to 0.0020%.
Patent EP-0344454-A2 (EP)
Inventor: STEWART DONALD B JR C O ALLIED
IPC: B64D41/00
Filed: 1989-04-24
Abstract: A multifunction integrated power unit (MIPU) (10) for use aboard aircraft provides the functions both of an auxiliary power unit and of an emergency power unit while being smaller, lighter, and less expensive than the two units it replaces. Additionally, the integration of both functions in a single unit allows elimination of duplicated service devices and a further reduction in size, cost, and weight in the aircraft itself. The MIPU (10) includes two turbine engines (12,22) operable under differing conditions, an integrating gear box (34) receiving power from the two engines (12,22) selectively, and a plurality of accessory devices (36,38) receiving shaft power from either of the two engines (12,22) via the gear box (34).
Patent EP-0353400-A2 (EP)
Inventor: HESSE ALFONS DIPL-ING
IPC: E21B7/26
Filed: 1989-05-02
Abstract: In a boring ram (1) having a percussion piston (3) displaceable in a tubular housing (2), and a displaceably mounted bit (10) which is passed through a housing tip (6), is guided with a collar (14) in a housing bore (13) having a front and a rear stop (20, 15) limiting the stroke (19) of the bit (10), and is provided with a stem (16) projecting into the working space (17) of the percussion piston (3), rebounding blows are avoided when the projecting length (18) of the stem (16) is less than the maximum stroke (19) of the collar (14) between the stops (15, 20). …<IMAGE>…
Patent EP-0345606-A2 (EP)
Inventor: MOLL KARL-ANDREAS C O MINNESOT
IPC: B65H20/04
Filed: 1989-05-30
Abstract: The invention relates to a process and to apparatus for the defined dispensing and application to a substrate surface of sections of a tape (2), particularly of a pressure-sensitive or thermally activatable adhesive tape, to a substrate surface. To this end, the tape is continuously adhesively affixed to the surface. Starting at an initial placement position; before the leading edge (18) in the direction of application (16) of the tape section is secured, it is severed partly, leaving at least one web of material (13), at a predetermined distance from the trailing edge (15) thereof by a cutting mechanism (9). After the subsequent adhesive placement of the entire tape section on said surface, the tape (2) is separated at said at least one web of material (13) by utilizing a braking effect as the tape or the tape dispensing and applying apparatus continues to move relative to the surface.
Patent EP-0349974-A2 (EP)
Inventor: MULLER BRUNO DIPL-ING FH FIRMA
IPC: B28B11/24
Filed: 1989-07-04
Abstract: A process for making ceramic slabs from punched extruded clay, in which firstly sections are separated from the clay, then predried to a state which can still be cut, and subsequently punched to form ceramic slabs which are then subjected to the finishing drying. <IMAGE>
Patent EP-0351757-A2 (EP)
Inventor: TANABE SHIRO
IPC: H04N7/18
Filed: 1989-07-17
Abstract: In a video conference terminal (1-6), a control unit for controlling signals received from a plurality of conference networks comprises a circuit 22) for combining video signals supplied from the conferences, a video switching circuit (22) for selecting a video signal of one conference, a circuit (27) for combining audio signals supplied from the conferences, an audio switching circuit (27) for selecting an audio signal of one conference, a control circuit (30) for controlling connection in the network through a speech path, and a circuit for controlling interruption of conferences, consolidation of conferences and priority of conferences.
Patent EP-0369118-A2 (EP)
Inventor: OHMS FRANZ DIPL-ING
IPC: H02M3/156
Filed: 1989-08-11
Abstract: A sawtooth-shaped signal (USK) having an approximately constant maximum amplitude and a signal dependent on the current (IL) as a result of the switch regulator inductance (L) is fed to the pulse width modulator (PBM) of a boost regulator for the purpose of regulation. 
<??>In order to keep the arithmetic mean (Iar) constant by means of the switch regulator inductance (L), according to the invention the pulse width modulator (PBM) receives a further sawtooth-shaped signal (USV), the maximum amplitude of which depends on the negative value of the input voltage (UE). Moreover, the pulse width modulator (PBM) additionally receives a signal as a function of the inversely proportional value of the input voltage (UE). 
<??>Changes in the input voltage can be suppressed optimally with a boost regulator of this type. 
<IMAGE>
Patent EP-0356878-A2 (EP)
Title: Verfahren zur Aufarbeitung von Hydrolyserückständen aus der Organochlorsilansynthese
Inventor: DEGEN BRUNO DR
IPC: C07F7/16
Filed: 1989-08-22
Abstract: Die vorliegende Erfindung betrifft ein verfahren zur Aufarbeitung von bei der Organochlorsilansynthese anfallenden hochsiedenden und feststoffhaltigen Rückständen, die hydrolysiert und gegebenenfalls anschließend mit sauerstoffhaltigen Gasen oxidiert werden, wobei der Hydrolyse und/oder Oxidation oberflächencktive Substanzen zugesetzt werden, die die Feststoffoberfläche gezielt hydrophil einstellen.
Patent EP-0361132-A2 (EP)
Inventor: FUHRIG WOLFGANG
IPC: B65D83/14
Filed: 1989-09-02
Abstract: A spray can is described for the spraying of liquid products, with a product container (26), which is situated in a housing shell and has a spray head (1a, 1-5) which is provided with a product channel (51) and an air-supply pipe (14; 20), the latter being connected to the pressure connection of an air pump, the spray head (1a, 1-5) having a closure part (2), an operating part (1), which is displaceable in relation to the latter, and fittings (13) for the introduction of compressed air into the nozzle (4) of the spray head (1a, 1-5). …<??>In order that, upon switching off of the spray device, the compressed air, which produces the spray jet, is stopped promptly, so that no subsequent spraying or dripping takes place, it is envisaged according to the invention that the closure part (2) has a passage (61) which is provided with pipe connections (20, 21, 27) and in which a control slider (13), which is movable with the operating part (1), prestressed by a return spring (15) and has passages (22, 28, 19, 62) and sealing beads (29, 30) for air and product liquid, is held movably. In this connection, there is a spraying position, an adjacent venting position upon partial relief of the return spring (15) and a closed position when there is maximum relief of the return spring (15), the control slider (13) being situated, in the latter position, in its uppermost position which projects the furthest from the passage (61). …<IMAGE>…