| Patent Number |
Title Of Patent |
Date Issued |
| 4943840 |
Reverse-conducting thyristor |
July 24, 1990 |
| A reverse-conducting thyristor having an integrated antiparallel diode, wherein an improvement of the switching characteristics is achieved by the fact that a field-controlled thyristor (FCT) is provided as the thyristor. According to a preferred illustrative embodiment, this FCT include |
| 4909859 |
Process for increasing the oxidation resistance and corrosion resistance of a component made of |
March 20, 1990 |
| A process for increasing the oxidation resistance and corrosion resistance of a component made of a dispersion strengthened superalloy by means of a surface treatment, the object of which in every case is to produce or retain a fine-grained surface zone (5) while the core zone (4) of the |
| 4897785 |
Search system for locating values in a table using address compare circuit |
January 30, 1990 |
| The retrieval of stored data by means of a search word or search key by using, a hashing method. For this purpose, the search key is resolved into a polynomial having the form of ##EQU1## where i=control variable, k=its maximum value, w.sub.i =polynomial coefficient, p=a power of |
| 4829348 |
Disconnectable power semiconductor component |
May 9, 1989 |
| A field-controlled thyristor having a sequence of layers consisting of anode layer, channel layer and gate regions and cathode regions, which regions are alternately arranged at the cathode side, wherein an improvement in the turn-off gain is achieved by a p-type doping of the side w |
| 4819232 |
Fault-tolerant multiprocessor arrangement |
April 4, 1989 |
| When a fault is detected in a processor, program execution in this processor is interrupted and taken up again by a standby processor from an earlier uncorrupted state, a recovery point. Such recovery points are specially provided in the program. A save copy of the state at the recov |
| 4818319 |
Process for reducing the water vapour diffusion in a plastics composite insulator consisting of |
April 4, 1989 |
| Process for reducing the water vapour diffusion in a plastics composite insulator consisting of several layers by incorporation of at least one mica-containing layer as diffusion barrier in the form of a surface or intermediate layer on at least one plastics body, constituting the co |
| 4817145 |
Generator for generating binary ciphering sequences |
March 28, 1989 |
| A generator for generating ciphering sequences, including plural clocked subgenerators (.GAMMA., .psi., .PSI.) which, in turn, generate binary sequences at one or several outputs. To achieve high cryptographic security of the ciphering sequence (.omega..sub.t) generated by the genera |
| 4811478 |
Process for the production of a lightning arrester and products produced thereby |
March 14, 1989 |
| A lightning arrester with a monolithic, active resistor core made of voltage-dependent resistance material based on ZnO is produced by mixing and grinding the base materials Zno+metal oxides, producing pourable granules, filling into a silicone rubber tube and pressing cold-isostatic |
| 4808246 |
Composite material in rod, tube, strip, sheet or plate shape with reversible thermomechanical pr |
February 28, 1989 |
| A composite material in rod, tube, strip, sheet or plate shape with reversible thermomechanical properties is produced by joining of at least two parts consisting of a total of at least one shape memory alloy having a two-way effect, whereby each part has a memory effect by itself. In th |
| 4801554 |
Process for manufacturing a power semiconductor component |
January 31, 1989 |
| A process for manufacturing a power semiconductor component having a component of this type is presented which has at least three consecutive layers and possessing a high current capacity and small power losses. For contacting the first two layers, the component has first second metalliz |
| 4800363 |
Method for data transmission via an electric distribution system and transmission system for car |
January 24, 1989 |
| A method and system for the transmission of data in an electric distribution system between a central controller coupled to a medium-voltage distribution line and at least one terminal coupled to a low-voltage wherein, the transmission of data within the medium-voltage distribution l |
| 4800257 |
Optoelectronic reading pen |
January 24, 1989 |
| An optoelectronic reading pen for scanning optically encoded information, applied to an information carrier, particularly in the form of a bar or line code, including means for illuminating the information carrier and an optoelectronic sensor which receives the light reflected from the |
| 4797587 |
Triggering method for a thyristor switch |
January 10, 1989 |
| A triggering method for a thyristor switch which has at least two thyristors wired in series and a thyristor wired in antiparallel to each of these thyristors. The thyristor switch is triggered or cut off as a function of a specifiable on-off signal. At least a single triggering of a |
| 4794624 |
Method for clock synchronization of a signal receiver |
December 27, 1988 |
| In a method for clock synchronization of a signal receiver, the demodulated received signal is sampled in each of the subintervals over N time windows having in each case K subintervals (1A . . . 4C). In each case, the dispersion is calculated for the sampled values of N corresponding |
| 4790980 |
Device for the generation of ozone and a process for its operation |
December 13, 1988 |
| A device and process for the generation of ozone using an ozone generator having two electrodes connected across the secondary winding of a high voltage transformer, the primary winding of which is connected to a converter which supplies thereto a square wave current of variable ampl |
| 4785208 |
Low-inductance anode-cathode R-C circuit for a gate-turn-off power thyristor |
November 15, 1988 |
| A low-inductance anode-cathode R-C circuit for a gate-turn-off power thyristor, including circuit diodes, capacitors and line connections for connecting the R-C circuit to a power thyristor. By reducing the spray inductances of circuit diodes, capacitors and line connections of the t |
| 4774716 |
Method for the transmission of digital data |
September 27, 1988 |
| A method for the transmission of digital data by means of phase modulation (PSK) and "frequency hopping", in which symbols are transmitted several times in different transmission sections as synchronization information for coherent demodulation, and wherein weighting factors taking into |
| 4772342 |
Wrought Al/Cu/Mg-type aluminum alloy of high strength in the temperature range between 0 and 250 |
September 20, 1988 |
| A wrought Al/Cu/Mg type aluminum alloy of high strength in the temperature range between 0 and 250.degree. C., having the following composition:Cu=5.0 to 7.0% by weightMg=0.3 to 0.8% by weightAg=0.2 to 1.0% by weightMn=0.3 to 1.0% by weightZr=0.1 to 0.25% by weightV=0.05 to 0.15% by weightSi< |
| 4768075 |
Power semiconductor module |
August 30, 1988 |
| A power semiconductor module including a cascade circuit of a low-voltage high-current MOSFET and of a bipolar semiconductor element, for example a field-controlled thyristor, GTO thyristor or Darlington transistor, as a hybrid combination. In this manner, it is possible to achieve a |
| 4767729 |
Process for the preparation of a voltage-dependent ceramic resistance based on ZnO, and a resist |
August 30, 1988 |
| A voltage-dependent ceramic resistance (varistor) based on ZnO and other addition elements, mostly in the form of oxides, is prepared, in that the addition elements are added to a suspension of ZnO powder in H.sub.2 O as chemical substances in the form of aqueous, mutually compatible, |
| 4765851 |
Aluminum alloy for the preparation of powders having increased high-temperature strength |
August 23, 1988 |
| An aluminum alloy for the production of powders having increased high-temperature strength by rapid quenching, the said alloy containing 1.5 to 5% by weight of Li, 4 to 11% by weight of Fe and 1 to 6% by weight of at least one of the elements Mo, V or Zr, the remainder being Al, or 1 |
| 4763471 |
Exhaust plenum chamber |
August 16, 1988 |
| An exhaust plenum chamber for a supercharged engine having a variable volume. A mechanical spring is arranged to an exhaust plenum chamber to increase the spring action of the plenum chamber volume. In this connection, the plenum chamber interior is divided into a flow chamber and a |
| 4760702 |
Supercharged marine diesel engine |
August 2, 1988 |
| In a supercharged marine diesel engine having at least one exhaust-gas turbocharger (6, 7) and a separate utility turbine (12) which is connected in parallel with the supercharging turbine (7) and delivers power, and having at least one auxiliary diesel engine (10) which is supercharged |
| 4756009 |
Method for transmitting digital data |
July 5, 1988 |
| A method for transmitting digital data wherein the data are transmitted in several transmission sections (I-IV) which in each case contain several symbols (1-6). In the transmitter, the phase of a carrier wave is modulated by n different phase angles and their frequency is suddenly c |
| 4754224 |
Circuit arrangement for converting an input voltage into a proportional output signal |
June 28, 1988 |
| A circuit arrangement for converting an input voltage into a proportional ouput signal, including a converting resistance which is followed by operational amplifier having a feedback resistance. For the purpose of stabilizing the gain of the circuit arrangement with respect to changes in |
| 4752713 |
Thermionic cathode of high emissive power for an electric tube, and process for its manufacture |
June 21, 1988 |
| A reactionless thermionic cathode for electronic tubes consists of a metallic or ceramic support and an alloy, preferably an intermetallic compound, containing the actual emission-promoting element, with a metal from the group comprising those of the VIIIth vertical row of the periodic |
| 4751392 |
Apparatus for sterilizing liquids |
June 14, 1988 |
| In the apparatus, a low-pressure high-current mercury-vapor lamp (4) equipped with a tubular extension (6) arranged on the discharge tube is used as a radiation source. So that the temperatures of the tubular extension (6) can be regulated specifically even during the operation of th |
| 4750946 |
Method for connecting superalloy components |
June 14, 1988 |
| Components (5) in a superalloy, in particular a dispersion hardened nickel based alloy, are connected together by pressure bonding in the solid condition with the greatest possible limitation of the overall deformation of the complete components (5) by lateral restraint (7), the actual |
| 4744213 |
Pressure-wave machine |
May 17, 1988 |
| A pressure-wave machine for supercharging internal combustion engines having a cellular wheel with surfaces coated with catalyst material. |
| 4743950 |
Thyristor with switchable emitter short circuit |
May 10, 1988 |
| In thyristor having disconnectable emitter short circuits provided by means of monolithically integrated transistor structure, wherein a simplified production and improved control of the short circuits is achieved by the fact that a bipolar structure is integrated as the transistor struc |
| 4743309 |
Method for zone heat treatment of a metallic workpiece |
May 10, 1988 |
| A method for zone heat treatment of metallic workpiece with a comparatively large cross-section, in which the workpiece is successively passed through a zone of higher temperature in such a way that the temperature of the workpiece initially rises steeply as a function of the displacemen |
| 4742382 |
Semiconductor component |
May 3, 1988 |
| A semiconductor component, including a GTO thyristor and integrally formed reverse conducting antiparallel diode, which can be used for turn-off of currents of 20 A . . . >2,000 A and off-state voltages of 600 V . . . >4,500 V in power electronics for driving electric vehicle motor |
| 4737708 |
Device for testing electrical or electronic systems with electromagnetic pulses |
April 12, 1988 |
| A gas-filled test cell is used which accommodates the object under test and to which a pulse generator is connected. The test cell is constructed over its entire length as a coaxial line having a ribbon-shaped inner conductor and a round outer conductor. A ribbon-shaped potential plate c |
| 4736464 |
Method for the additional transmission of information via a digital auxiliary channel, in an opt |
April 5, 1988 |
| A method for the additional transmission of information items via a digital auxiliary channel in an optical wave guide system for digital signal transmission, in which system electric signals, which are coded in a pseudo-ternary bipolar code, are converted into a redundant, binary line |
| 4734105 |
Process and device for the removal of solid or liquid particles in suspension from a gas stream |
March 29, 1988 |
| A method and device for removing solid or liquid particles contained in suspension in a gas stream by an electric field, wherein the gas stream flow is directed past ion sources which simultaneously act as field electrodes. The suspended particles are thereby changed in a bipolar man |
| 4734010 |
Damping element for independent turbomachine blades |
March 29, 1988 |
| The present invention relates to a damping element for independent blades of a turbomachine in which the blades fastened in the rotor are connected together, preferably in the radially outer region, the connection between two blades consists of an elastically deformable platelet curved t |
| 4732004 |
Process for purifying and deaerating the condensate/feed water in the circulation system of a po |
March 22, 1988 |
| In a process for purifying and deaerating the feed water line in the circulation system of a power-generating plant heated by nuclear power, the following steps are carried out in order to solve acute problems of steam-generator corrosion:(a) when the preheater train is filled, with the |
| 4729667 |
Process and device for the determination of the thermal resistance of contaminated heat exchange |
March 8, 1988 |
| The process consists in that two comparison tube sections (3; 4), which originate from a single condenser tube and of which one (3) is left in the corroded condition and/or the condition encrusted by mineral deposits and the other (4) is brought into the new condition by etching or other |
| 4729217 |
Combined gas/steam power station plant |
March 8, 1988 |
| In a combined gas/steam turbine power station plant with integrated coal gasification, the gas turbine combustion chamber and auxiliary firing in the exhaust heat steam generator are fired with fuel gas from the gas generator with nitrogen from the air separation plant being previously |
| 4729053 |
Process for the production of a lightning arrester and products produced thereby |
March 1, 1988 |
| A lightning arrester with a monolithic, active resistor core made of voltage-dependent resistance material based on ZnO is produced by mixing and grinding the base materials ZnO+metal oxides, producing pourable granules, filling into a silicone rubber tube and pressing cold-isostatic |
| 4727479 |
Allocation circuit for parallel busses of data processing systems |
February 23, 1988 |
| An allocation system for the use of a data processing system where plural user systems of the data processing system gain access to parallel busses of the data processing system in a sequential manner based on a priority determination. The priority determination involves an allocation ci |
| 4726843 |
Aluminum alloy powder product |
February 23, 1988 |
| Aluminum alloy, suitable for rapid quenching from a melt supersaturated with alloy components, which contains 2 to 5.5% by weight of Cr and 2 to 5.5% by weight of V, the remainder being Al, and may contain further added amounts of Mo, Zr, Ti or Fe, individually or in combination, up to a |
| 4725838 |
Method for processing analog output signals from current and voltage transducers and facility fo |
February 16, 1988 |
| Analog output signals from decentralized transducers for current and voltage are sampled with timing patterns generated at a decentralized location and are transmitted to a central evaluating facility in the form of digitally encoded data streams (D.sub.UR, . . . ).For the purpose of gen |
| 4723525 |
Internal combustion engine with a pressure wave supercharger |
February 9, 1988 |
| The pressure wave supercharger of the internal combustion engine has a diaphragm capsule (20) for controlling the supercharge air butterfly (14). The diaphragm (21) of the diaphragm capsule is, in operation, subjected on the butterfly side to the high pressure air in the high pressure ai |
| 4722668 |
Device for damping blade vibrations in turbo-machines |
February 2, 1988 |
| In order to damp blade vibrations, the shroud plates of the blades are equipped with magnet inserts. |
| 4722469 |
Process for connecting components made of a dispersion-hardened superalloy using the pressure-bo |
February 2, 1988 |
| Components made of a dispersion-hardened superalloy are connected together by pressure bonding, the individual parts previously processed at their bonding surfaces only by milling, without fine machining such as grinding, electro-polishing, etc., being subjected before bonding to a heat |
| 4720469 |
Method for diffusing aluminum |
January 19, 1988 |
| For the p-type doping of silicon, particularly for power semiconductor components, aluminum from an Al target is precipitated by cathode sputtering in an argon plasma on a major face (2) of a silicon wafer (1) by which means a comparatively high purity of the deposited aluminum is ac |
| 4719756 |
Supercharged marine diesel engine |
January 19, 1988 |
| A supercharged marine diesel engine having at least one exhaust gas turbocharger and a separate power turbine is connected in parallel with the supercharger turbine. At least one auxiliary diesel engine drives a synchronous generator for supplying the shipboard grid with electrical e |
| 4719746 |
Gas turbine with a pressure wave machine as the high pressure compressor part |
January 19, 1988 |
| The high pressure compressor part of a gas turbine installation having a high pressure, a medium pressure and a low pressure part (21 and 22, 23) of the gas turbine is provided by a pressure wave machine in which the high pressure gas is generated by self-ignition of liquid or gaseous fu |
| 4715041 |
Bath electrode for pot furnace |
December 22, 1987 |
| To assure a high degree of operating reliability during operation of pot furnaces, their bath electrode (2, 14, 17, 20) in the pot (1) must be cooled intensively by external cooling. If the pot (1) is in the pot furnace station, cooling of the bath electrode (2, 14, 17, 20) is not a |
