Abstract: A process of producing a device which is one of a battery, an electrochromic device, an electronic device, an n-type conductor, or an electroluminescent device includes fabricating at least one constituent of the device from a polymer comprised of poly(alkylpyridine-2,5-diyl) having a chemical formula: ##STR1## wherein R is an alkyl group having not less than 3 carbon atoms, and n is a degree of polymerization and is not less than 30. Preferably R is an alkyl group having 4 to 20 carbon atoms and n is a degree of polymerization and is not less than 30. Most preferably R is an alkyl group selected from the group consisting of a hexyl group, a pentyl group, an octyl group, a decyl group, and a dodecyl group.

Abstract: An apparatus for restarting an inverter after momentary interruption by detecting a power restoration after a momentary outage of a power supply that supplies power to the inverter for driving a synchronous motor. The apparatus includes a frequency detecting portion that detects the frequency of a terminal voltage of the synchronous motor, a phase difference detector that detects the phase difference between the terminal voltage of the synchronous motor and the output voltage command value of the inverter, a phase controller that performs synchronous control so that the frequency and phase of the output voltage command value of the inverter and those of the terminal voltage of the synchronous motor agree with each other, and a restarting portion that restarts the inverter under the condition that the synchronization has been completed after the power restoration of the power supply.

Abstract: A lens system used for reading an image, the system being constructed of two lenses and presents sufficient performance for reading an image in an image scanner, a facsimile, etc. The system is constructed of a positive meniscus image-forming lens and a positive meniscus auxiliary lens. The convexes of both lenses face an object. The image-forming lens has at least one aspherical surface or it has an aspherical surface formed by joining an aspherical surface layer formed of a transparent material to the surface of a spherical glass lens. Both surfaces of the auxiliary lens are aspherical.

Abstract: The invention relates to a catalyst comprising a rare metal of Group VIII of the Periodic Table of Elements which has been deposited on an inert support and which has been used to dehalogenate .alpha.-halogenated carboxylic acids in the presence of hydrogen, and a rare metal of Group VIII of the Periodic Table of Elements which has been deposited on an inert support and which is such that the granulometry of b) is very much lower than that of a) to form a homogeneous mixture as a result of the action of currents of .alpha.-halogenated carboxylic acid and hydrogen wherein said invention is particularly useful for regenerating palladium catalyst used in the purification of crude monochloroacetic acid.

Abstract: A method for improving accuracy of estimating natural frequency of a distribution system. The estimation is performed in order to identify a rectifier load that generates harmonics due to commutation oscillation. It includes the steps of measuring a charging current flowing into a power factor improving capacitor to obtain first data, removing fundamental frequency from the first data to obtain second data, determining, from the second data, a first time at which the amplitude of commutating oscillation components takes a maximum value, picking up third data in the interval beginning from the first time and ending at a second time later than the first time by T/N, where T is the period of the fundamental frequency, and N is the number of rectifier phases, performing frequency analysis on the third data to form fourth data by expanding the third data into a Fourier series, and determining a local peak frequency, that is, the natural frequency in the fourth data.

Abstract: Process for the synthesis of alkylated aromatic hydrocarbons containing a saturated alkyl chain comprising at least four carbon atoms, according to which an aromatic hydrocarbon substituted by a saturated short-chain alkyl group comprising one to three carbon atoms is reacted with an olefin in the presence of a catalyst which comprises at least one alkali metal or one alkali metal hydride impregnated on an alumina support and the catalyst is prepared in the reaction medium in the presence of the aromatic hydrocarbon containing a short alkyl chain by mixing anhydrous alumina with the alkali metal hydride or with the alkali metal, the ratio by weight of the alkali metal or of the alkali metal hydride to the alumina support being between 0.6 and 1.8. Use of the process for the synthesis of tert-amylbenzene by alkylation of cumene with ethylene.

Abstract: A supporting bearing (17) for linearly guided travelling units, having a housing and having a roller (20) which contains a rolling-contact bearing (26) and is seated on an eccentric bolt (28) which is mounted rotatably in the housing and can be fixed by clamping bolts (27). The housing (18a, 18b) is composed of two housing halves (18a, 18b) which are preferably of the same construction. The axial position of the roller (20) is determined by inner wall regions (46) of the housing halves (18a, 18b), which are laid or pressed against the end sides of the inner raceway (27) of the roller (20) after radial adjustment of the roller (20), by clamping the housing halves (18a, 18b) together. This results in the axial position of the roller (20) being fixed directly by way of its inner raceway (27).

Abstract: Method for producing an industrial aqueous sodium chloride solution (22) in which an aqueous solution of sodium chloride (20) containing polyvalent metals and constituting a mother liquor obtained from the precipitation (14) of hydroxides of said metals from an aqueous solution (6) of hydrochloric acid is obtained from washing (3,4) fumes (1) containing hydrogen chloride and originating from the oxidation of chlorinated products, is treated on a chelating Na-type resin. The aqueous sodium chloride solution obtained in this manner has applications in the production of aqueous sodium hydroxide solutions by means of electrolysis or electrodialysis and in the production of sodium chloride crystals by means of evaporation.

Abstract: A flat bar for a travelling flats assembly of a carding machine includes a carrier body having opposite end faces spaced from one another parallel to a longitudinal axis of the carrier body; and a flat bar end adjoining each end face of the carrier body. Each flat bar end includes an element which has a gliding portion having a part arranged for being in a gliding contact with a slideway of the travelling flats assembly; and a securing portion supporting the gliding portion and being attached to the carrier body.

Abstract: Accurate phase switching of similar pulse trains having different phase position, in which a respectively selected pulse train determines a pulse train to be distributed by means of a phase locked loop, is achieved. Each pulse train is individually delayed so the phase position is roughly adjusted to zero with respect to the pulse train to be distributed. Each non-selected pulse train is continuously compared with the pulse train to be distributed. A phase error voltage is determined that corresponds to a phase difference still present as it would become effective as a control voltage in the phase locked loop. An oppositely equal correcting voltage is added to the phase error voltage to produce a sum, and the sum is made available as an output voltage. Switching to another pulse train is effected by maintaining the relevant correcting voltage at a momentary value and switching the associated output voltage into the phase locked loop as a control voltage in place of a previously used output voltage.

Abstract: An antenna switching circuit comprises a first amplifier including a first FET receiving a first receive signal from a first antenna at a gate of the first FET, and amplifying the first receive signal, and outputting the amplified signal via a drain of the first FET to an output terminal, and a second amplifier including a second FET receiving a second receive signal from a second antenna at a gate of the second FET, and amplifying the second receive signal and outputting the amplified signal via a drain of the second FET to the output terminal. The first and second FETs are coupled to receive, at their sources, first and second control signals complementary to each other so that one of the FETs is made active while the other is made inactive, depending on values of the first and second control signals. The consumption current is reduced, and in addition, an amplifier in a receiver provided to receive the output of the antenna switching circuit may be omitted.

Abstract: A method is disclosed for the protection of catalytic converters for exhaust gas purification by measuring the temperature with a heat tone sensor suitable particularly for the implementation of the method, wherein a heat tone sensor composed of at least two NTC or PTC resistors and provided with a coating of a catalytically active material on the sensor in the region of at least one of these resistors is arranged ahead of the catalytic converter in the exhaust gas stream or a part thereof, with the catalytically active material initiating the same exothermal reactions as they take place in the catalytic converter employed for the exhaust gas purification. If the resistor is overheated due to an overly intensive exothermal reaction, resulting in a change in resistance, the heat tone sensor detects the drop in the throughput rate of the catalytic converter.

Abstract: An adaptive filter estimates the noise component in a primary audio signal by convolving a secondary audio signal with a set of coefficients. The estimated noise component is subtracted from the primary audio signal to produce an output signal. During steady-state operation, the adaptive filter coefficients are updated as to minimize the difference between the primary audio signal and the estimated noise component. Steady-state operation is identified automatically by monitoring the power level of the primary or secondary audio signal, or the power level of the output signal. Coefficient updating is suspended when the monitored power level rises from a steady state to an unsteady state, and is resumed when the monitored power level returns to its previous steady-state level, or settles into a new steady state.

Abstract: The invention relates to an opto-electronic component having a narrow aperture angle. The conventional design of components transmitting radiation or reacting to radiation and concentrating that radiation with the aid of lenses results, on account of the increasing distance between the lens and the semiconductor chip, in increasing component dimensions in the radiating or detecting direction with an increasingly narrow aperture angle. In accordance with the invention, a parabolic or approximately parabolic reflector is provided that is connected to a support strip supporting the semiconductor chip such that the latter is as close as possible to the focal point of the parabolic or approximately parabolic surface of the reflector. The reflector is preferably connected to the support strip by engaging elements and surrounded by a housing.

Abstract: To produce base boards each usable for an information recording medium such as a photoelectromagnetic disc or the like by employing an injection molding process, an injection molding die of the type comprising a die half on the stationary side and a die half on the movable side includes a cylindrical supporting member on the stationary side, a die assembly on the stationary side arranged in the cylindrical supporting member, a cylindrical supporting member on the movable side, a die assembly on the movable side arranged in the cylindrical supporting member, a cylindrical guide member located between both the cylindrical members, a first driving unit for displacing the die half on the movable side, and a second driving unit for actuating an ejector sleeve.

Abstract: A water level regulating system controlling the water level of a head tank of each of a plurality of hydroelectric plant installed in cascade along a stream by using an opening of guide vanes of a hydraulic turbine as a manipulated variable, and the water level of the head tank as a controlled variable. Each hydroelectric plant has a water level regulator constituting the water level regulating system. Each of the water level regulator of an upstream hydroelectric plant and the water level regulator of a downstream hydroelectric plant has a device varying PID parameters for controlling the water level in accordance with the opening of the guide vanes, and a device varying a reference water level to a set water level.

Abstract: A filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine, including a current supply and a filter body. The filter body is composed of a porous filter material. The filter body has a plurality of filter ducts arranged in a honey-comb pattern. Each filter duct has an inlet opening for the intake of the exhaust gases. The filter arrangement further includes a resistance heating element arranged in a region of each inlet opening and having a series of loops each projecting into the filter ducts. The resistance heating element further has a lead-in line and a lead-out line connected to the current supply. A wall of a respective filter duct and a respective heating element loop are form lockingly connected together.

Abstract: A device for separating flat parcels from a stack of parcels includes a drawing element that travels in a conveying direction and acts by friction on a parcel to be drawn off from the stack of parcels. A guide wall for the stacked parcels forms a gap with the drawing element for a drawn off parcel to pass through. A support surface supports the stack of parcels and generates a stack pressure in a direction of the drawing element. At least one first nozzle disposed in the region of the support surface, and/or the region of the guide wall, blows compressed air between the parcels in the stack. At least one second nozzle, disposed in the region of the gap, between the stack of parcels and the guide wall, blows compressed air having a predetermined inclination counter to the conveying direction of the parcels to be drawn off.

Abstract: A tongue forming part of a safety belt is provided with two apertures adapted to receive the safety belt. The tongue has a portion adapted to be received and retained by a buckle forming part of a safety belt system. The tongue carries a clamping element adapted to be moved, by pressure applied to the clamping by the safety belt, to a clamping position in which the clamping element clamps part of a safety belt locking means are provided movable between a locking position and a release position. When the locking means are in the locking position the clamping element is prevented from moving to the clamping position. However, when the locking means are in the release position the clamping element may move to the clamping position.

Abstract: A method for improving accuracy of estimating natural frequency of a distribution system. The estimation is performed in order to identify a rectifier load that generates harmonics due to commutation oscillation. It includes the steps of measuring a charging current flowing into a power factor improving capacitor to obtain first data, removing fundamental frequency from the first data to obtain second data, determining, from the second data, a first time at which the amplitude of commutating oscillation components takes a maximum value, picking up third data in the interval beginning from the first time and ending at a second time later than the first time by T/N, where T is the period of the fundamental frequency, and N is the number of rectifier phases, performing frequency analysis on the third data to form fourth data by expanding the third data into a Fourier series, and determining a local peak frequency, that is, the natural frequency in the fourth data.