Abstract: For controlling an internal combustion engine for the acceleration of an automobile, a change in the amount of air passing through an intake manifold is detected and a correction for the fuel injection time is performed on the basis of the change. After the amount of air has reached a substantially constant value, the corrective control is continued for a certain period of time.

Abstract: A liquid droplet projection apparatus is disclosed which comprises a nozzle arranged at a liquid droplet ejection head, a liquid droplet supply tank, and an electro-mechanical transducer section interposed on the head between the nozzle and the tank. The volume of the electro-mechanical converter means changes in volume in response to an electrical signal pulse applied thereto to cause the nozzle to eject liquid droplets in accordance with the electrical signal. When the pattern of the electrical signal applied to the electromechanical transducer section has an interruption period longer than a predetermined width and three or more successive electrical signals following the interruption period, the amplitude and/or width of the second one of the successive electrical signals is enlarged as compared with the amplitude and/or width of the other electrical signals, thus preventing the diameter of the second liquid droplet ejected following the interruption from being reduced.

Abstract: An electron microscope is disclosed in which an electron beam impinges upon a specimen at a predetermined angle of incidence, the incident azimuth of the electron beam incident upon the specimen is continuously changed, and the electron beam having passed through the specimen is made large in angular spread by a magnifying lens system and then projected onto a viewing screen to form a visual enlarged image of the specimen on the viewing screen; and in which the astigmatism of the magnifying lens system is shown on the viewing screen as the blur of the image.

Abstract: A circuit or control arrangement for an adjusting drive of a press ram of a high-speed cutting press which includes top and bottom dies respectively attached to the press ram and a platen of the press with the top die being adapted to dip or penetrate during a cutting process into the bottom die. An arrangement is provided for maintaining the depth of penetration of the upper die means into the lower die means at a constant value in dependence upon an operating condition of the high-speed cutting press. The maintaining arrangement may include at least one limit switch operatively connected with an oscillator stage which provides adjusting signals to the drive motor. In lieu of a limit switch, a cutting force measuring sensor member may be interconnected with an evaluator circuit and the oscillator means so as to control the drive motor.

Abstract: A link performance indicator card analyzes incoming analog data from a demodulator on a bit by bit basis and compares the individual bit amplitudes with a fraction of the average bit signal levels. The data bits that lack sufficient amplitude to be clear-cut "high" or "low" pulses are detected as "pseudo-errors". A bit error rate gate signal controls the detectors in order that circuits operate for only one burst or part of a burst per frame always from the same earth station. A comparator is used for comparing the output of the averaged incoming analog signal with the instantaneous value of the analog signal. Alternate clocking signals are used to perform the averaging function and the comparison function of the average signal with the instantaneous signal. This alternation of the signals frees the comparison operation from the influence of any loading on the circuit. The sample points of the incoming analog signal are adjustable by use of delays on the clock signals fed into the circuits.

Abstract: A method of and a system for removing miniuscule solid particles from liquid wherein the liquid to be processed is supplied to one end of at least one filter element which may be a porous tube filter open at opposite ends and formed with a multiplicity of tiny openings in its wall having a first surface and a second surface. The liquid flows along the first surface and a portion thereof is passed through the tiny openings from the first surface side to the second surface side because of the latter being under lower pressure than the former, to be drawn off as filtrate. The rest of the liquid or a concentrated liquid portion flows out of the other end of the filter element. The flow velocity F of the liquid flowing along the first surface and/or the flow velocity f of the filtrate through the tiny openings is controlled such that the ratio F/f can be kept at a predetermined value.

Abstract: A discriminator apparatus for a television multivoice system comprises a mixer for mixing a program identifying signal with a reference signal thereby to produce a differential beat signal. A reference signal generator includes a signal source of an original frequency, and a frequency converter for converting the original frequency to the reference frequency which is close to the frequency of the program identifying signal and so selected that the frequency of the differential beat signal is lower than the lowest audible frequency. A low-pass filter is employed for extracting the differential beat signal. Need for expensive mechanical filters of a narrow fractional bandwidth is thereby eliminated.

Abstract: A converter includes a voltage selector which employs IGFETs as voltage switching elements, and a controller which controls the IGFETs. Each of the IGFETs in the voltage selector is made either the P-channel type or the N-channel type, depending upon a voltage level to be thereby switched and a level of a binary signal supplied from the controller. As a result, a voltage of comparatively great level can be switched by a binary signal of small level amplitude.

Abstract: A device for indicating engagement or operable condition of turn indicator blinker lights of a vehicle, wherein the vehicle is provided with a gripping member adapted to be contacted by the driver of a vehicle, such as a grip of a handlebar of a motorcycle. A kinetic signal generator is response to the operation or engagement of the turn indicator blinker lights for generating kinetic signal on the gripping member as an indication of operation of the blinker lights.

Abstract: A power converter for power conversion between an a.c. system and a d.c. system includes a full-wave bridge circuit having GTO connected in at least one arm of the full-wave bridge circuit on the positive polarity side. During a conduction-enabled period of GTO which is determined by a firing phase angle, the GTO is so controlled as to perform current chopping operation by a pulse signal of a predetermined pulse width.

Abstract: A plasticizer-containing film of a partially acetalized polyvinyl alcohol resin contains as the plasticizer a mixture of an ester of an organic cyclic acid and/or a conventional acetal plasticizer for said resin, and an ester of an oxygen acid of phosphorus.

Abstract: A roof assembly for vehicles, especially motor vehicles for agricultural purposes, utilizing a roof member having approximately the shape of an inverted trough that is mounted upon a roof frame. The roof is made of plastic, is releasably mounted to the vehicle, and has a segment which rests upon the roof with a sealing element interposed therebetween. This segment cooperates with a supporting part for an upper roof wall and with the roof frame by means of a holding device. In accordance with the preferred embodiment, the upper roof wall has a local extension in the vicinity of the supporting part which rests upon a bent portion of the supporting part, and the holding device is formed by a recess in a peripheral wall of the roof formed by the segment and by an element of the supporting part that projects into the recess.

Abstract: A method and system for controlling water level of a drum of a heat recovery steam generator for a combined cycle power plant is provided. The combined cycle power plant includes gas and steam turbines and the steam generator for recovering heat in exhaust gases from the gas turbine and for using the recovered heat to produce and supply steam to the steam turbine. At a start up operation, the water level of the drum is lowered in advance to the plant start up operation so that abrupt rise of the water level due to swelling phenomenon of the boiler water which may result in heat losses by damping water out of the plant is prevented. Also, a gas turbine load increase is maintained at a constant level during a period in which the abrupt water level rise is expected so that the swelling phenomenon is avoided.

Abstract: A mount having a flared portion is so located that it is coaxial with a straight glass tube having an unconstricted end part and that an end face of the flared portion lies slightly inwards with respect to an end face of the glass tube. Subsequently, an outer surface of the end part of the glass tube is uniformly heated, whereby the flared portion and the end part of the glass tube are melted and stuck to each other. At this time, a surface temperature of the whole glass tube except the melted and stuck portion is maintained at or above 40.degree. C. As a result, a fluorescent lamp having good lamp characteristics is fabricated by the use of the inexpensive glass tube.

Abstract: A system for production of non-woven sheet material by the dry forming method, comprising a moving carrier web to receive a uniformly distributed layer of loose fibres and a fibre distributor unit located above and across the moving web. The distributor unit includes a closed conduit system for conducting a flow of air fluidized fibre material, this closed flow across the web being maintained by blowing action. The conduits located overhead the web are provided with outlet openings constituted by narrow slots or screen wall portion, and compressed air nozzles are arranged so as to cause fibres circulating in said flow crosswise to be moved crosswise in the flow outwardly through the outlet openings, whereby a high distributor capacity is obtained by simple means by forcing fibre material out of the outlet openings in a positive manner as distinguished from outlet by general suction from outside the outlet openings.

Abstract: A magazine for a protected storage of a set of drills and for enabling a selective withdrawal of drills arranged in individual pockets in the magazine. The magazine includes a flat magazine body having narrow end faces with at least two straight rows of parallel pockets being provided in the magazine body into which drills are inserted and are accommodated over their full length. The pockets have an open end which opens in a direction of one of the narrow end faces. The narrow end faces of the magazine body are interconnected by curved transistion faces and form a sliding face for a covering strip which is slidably guided along a narrow surface area of the magazine body, which surface area is formed by the narrow end faces and the curved transistion faces. The covering strip includes a number of selector openings corresponding to the number of rows of pockets in the magazine body.

Abstract: An electric heating device for heating the interior of a cabinet containing electrical apparatus, such as a switch or distribution apparatus, to prevent sweating or condensation therein, includes at least one PTC electrical resistance heating and temperature self-regulating heating element situated in the interior of an elongated body made of thermally conductive material that is thermally connected to a radiator. The radiator is formed by a pair of flat base plates extending laterally from opposite sides of the body and radiator fins extending only from the base plates and only from one flat side thereof. The body is a massive hollow element having a wall thickness greater than that of the base plates and fins and a height greater than the thickness of the base plates. The body, base plates and fins are formed as a one piece extrusion. A permanent magnet may be used to secure the body to the interior surface of a steel cabinet.

Abstract: A viewing angle measuring device for automotive vehicles. The measuring device includes an elliptical template representing a so-called visual ellipse. The template is arranged in the vehicle in a prescribed position with respect to a driver's seat regarding a center position and an axial inclination. A measuring beam projector may be guided with its optical axis and/or with a measuring beam tangentially along a governing curve of the elliptical template. A goniometer, continuously indicating the viewing angle, is connected to the measuring beam projector to determine the beam direction with respect to a reference plane as a measure of the viewing angle.

Abstract: A valve for controlling the inlet and outflow of fluid into a housing chamber is provided. In order to minimize the forces necessary to move the sealing body, while also assuring a reliable sealing of inlet and outlet openings on a sealing surface of the valve housing, the sealing bodies are constructed of elastic flexible loops that are unrollable over the sealing surface. In particularly preferred embodiments, magnetic means are provided for selectively moving the sealing body to open and close the respective openings.

Abstract: In the production of a semiconductor integrated circuit device including a selective oxidation step at a high temperature using a nitride film as a mask for isolating respective element regions in a semiconductor wafer with oxidized regions, electrode contact regions and active regions are successively formed in each element region to be surrounded by the oxidized regions and thin oxide films are formed on exposed surfaces of the electrode contact regions, the thin semiconductor oxide films are removed simultaneously by immersed etching, and then electrode metal layers are formed thereon. The thickness of the oxide layer on which the electrode metal layers are formed is maintained almost uniform to ensure the isolation effect. Since a buried region in each element region is required only to make partial contact with the contact region at the bottom portion, the integration density of the elements in the integrated circuit can be increased.