Abstract: A method of producing a light conductor structure or controllable coupler having a pair of light conductors embedded in a substrate of an electro-optical material and having electrodes arranged therebetween characterized by applying a layer of polycrystalline silicon on one surface of the substrate; etching away a portion of the layer to form a doping or diffusion mask; applying a layer of diffusion material on the mask and exposed silicon-free portions of the surface; diffusing the diffusion material into the silicon-free portions to form the light conductors; applying a layer of negative acting photo-lacquer on the layer of diffusion material and the conductors; projecting light through the substrate with the remaining portions of the silicon layer acting as a mask to expose the photo-lacquer; developing the layer of photo-lacquer to remove unexposed portions with the remaining portions of the lacquer covering the light conductors; removing the remaining portions of the silicon layer; applying a metal layer

Abstract: A lateral register control system utilizing a reference lateral and circumferential mark pair preprinted on the web which is compared with a corresponding mark pair mounted on a drum coupled to the shaft of the print cylinder whose reference is to be controlled. The clock source being an encoder connected to the same print stand as laid down the reference marks on the web. The contents of the cylinder position counters always being slightly greater than the contents of the scanner difference counters and being counted up slightly before the scanner difference counters. Upon sensing a first reference mark on the web, the scanner difference counters are permitted to count. Upon the second reference mark being sensed the fine adjust counters are permitted to start counting. Upon the contents of the fine adjust counters equaling the value of operator setable fine adjust switches, an error pulse train is generated having an associated sign.

Abstract: A tomography processor system for processing data from a plurality of projections in essentially real time to produce a reconstructed image immediately following completion of a scan. The system includes specialized high-speed processing stages for performing required calculations and operating in concert with a low-cost computer providing overall system control. These processing stages form a multi-stage pipeline processor capable of performing the correction, convolution, interpolation, and back projection functions required to reconstruct the desired final image. The invention makes use of a reconstruction algorithm particularly adapted to implementation in the manner disclosed and claimed.

Abstract: An inverter includes a pair of switching elements operated by control signals from a signal generator to take two-position action in the same phase or in opposite phases, and a coupling transformer to couple the control signals so that ON actions or ON and OFF actions of the switching elements are synchronized with each other more precisely than circuits of the past have been able to provide.

Abstract: A support for an intermediate carrier drum of the type used in electrostatic printers and copiers. A hollow drum is supported on a rotating shaft at both axial ends of the drum by shaft carried flange structures. One flange structure is fixed to the shaft and the other is removable therefrom at a free end of the shaft. A detachable extension of the free end carries a spring biasing member which urges the free end adjacent flange member toward the fixed flange entrapping the drum therebetween.

Abstract: A loudspeaker system which has a frequency response at any angle located about the speaker system which will be uniform such that the output sound pressure at any frequency from the speaker system will be as great or greater than the sound pressure from any other direction which comprises a reflected path from the speaker system. The speaker system includes a radial horn which radiates a spherical sector rotated 360.degree. through a horizontal plane is provided. One or two speakers are mounted so that they produce a pulsating cylindrical wave which feeds into the radiator and an inverted conical member is mounted in the transition portion between the pulsating cylinder and the output horn portion. This output is blended with similar wavefronts produced by a low fequency loudspeaker which is acoustically associated with a vented box. The vent is on the periphery of the box adjacent the low frequency loudspeaker and is narrower than the thickness of the walls of the box.

Abstract: In the illustrated embodiment the ultrasonic applicator is activated to emit ultrasonic pulses along a plurality of scan lines simultaneously, the echo signals of all simultaneously scanned lines being stored and then rapidly read out during ultrasonic scanning along a further set of lines, the individual lines of each set being displayed in sequence and the successive sets being correspondingly displaced on the image screen so as to reproduce the ultrasonic image.

Abstract: A phase regulating circuit in which a phase comparator is supplied with output pulses of a pulse generator over a frequency divider and, for comparison therewith, the timing pulses derived from a displacement pick-up, with the output of the phase comparator being utilized for controlling the pulse generator to regulate the phase of the output thereof, means being provided for interrupting the supply of timing pulse from the frequency divider to the phase comparator in the event of an interruption in the displacement pick-up pulses, and which, upon recurrence of the displacement pick-up pulses, reconnects the frequency divider to the comparator for supplying divider output pulses to the comparator which have been matched in phase as close as possible to that of the displacement pick-up pulses.

Abstract: Magnetizable particles are separated from a sludge which includes fine-grained particles and the magnetizable particles suspended in a carrier by creating a laminar flow of the sludge over a surface which is disposed at an angle to the horizontal. The surface is included in a magnetic system which has a plurality of supra-conducting magnets with coils which are energizable to provide alternate north and south poles longitudinally and transversely of the surface. The supra-conducting magnets each have an end adjacent the surface and short-circuited opposite ends to amplify the magnetic force in the direction of the surface.

Abstract: In a clothes washer an agitator that is also a water pump draws water from the zone between the basket and the tub of the clothes washer and pumps it to the inside of the basket thereby raising the water level in the area where washing occurs during agitation and also promoting good clothes roll-over action in the treatment zone. A method of laundering articles includes the step of pumping laundering liquid into a treatment zone and radially outwardly along a lower portion of the zone during agitation to obtain a desired level of laundering liquid in the part of the zone where laundering occurs.

Abstract: In an illustrated embodiment the line generator for the image display device is operated at a relatively high frequency such as 200 Hz while the actual ultrasonic scanning takes place at a pulse repetition rate of 50 Hz. Preferably alternately operable buffer memories store successive lines of ultrasonic echo signals, and then provide readout of the lines at a higher rate consistent with the display line frequency. In the example given, each stored echo line is read out twice in successive display line intervals. By suitable control of the readout timing, one set of staggered pairs of display lines may be displayed during one image cycle, and an interleaved set of display line pairs may be activated during alternate image cycles in conjunction with interlaced scanning operation of the ultrasonic applicator.

Abstract: An output/input coupler for multi-mode glass fibers characterized by a substrate, a main line having at least one flat surface, and at least one branch line having one flat surface. The main line and branch line are arranged on the substrate with the flat surfaces being in spaced parallel facing relationship. Preferably, the main line has the square cross section and the flat surface of each branch line extends at an angle to the axis of the branch line so that the branch line has a wedge-shaped configuration in the plan view. A transparent material may be imposed in the space between the spaced parallel facing surfaces of the main and branch lines. This transparent material may be a liquid crystal material whose optical properties are changed by the application of an electric field created by a pair of electrodes which overlie the space between the parallel facing surfaces.

Abstract: A fault current protection switch detects fault currents from conductors of a supply means to ground. The system uses at least one difference transformer connected to the conductors of the supply mains. An oscillation generator circuit is connected to the difference transformer through feedback windings. The oscillation generator circuit checks the magnetization of a core of the difference transformer, and, in the event of a change in the transforming properties of the core due to "mis" magnetization caused by a fault current, the oscillation generator circuit triggers a control and switching member connected in the supply mains to disconnect the same.

Abstract: An adjustable pad hydraulic lift structure has a vehicle engaging and supporting pad vertically movable by a hydraulic piston, the pad being mounted on a bolster and having load transfer blocks facing downwardly for engagement with the bolster to transfer vehicle load from the pad to the bolster. Supporting and guide rods on the bolster and bearings on the pad cooperate to support the unloaded pad for adjustment into selected position over the bolster, and while supporting the unloaded pad maintaining the pad at an elevation wherein the load transfer blocks are supported free of the bolster to permit free adjustments of the pad. The supporting and guide rods are yieldable when the pad is under vehicle load to permit the load transfer blocks to engage the bolster for load transfer from the pad to the bolster.

Abstract: A method and apparatus is disclosed for a fast switching digital differential amplifier system useful in regenerating information signals in charge coupled devices. The amplifier system has a first capacitance at an input point which is charged and discharged in accordance with a binary "0" or binary "1" at the input. A second capacitance and an output capacitance is provided with a predetermined charge thereon. In the event of a binary "1", the predetermined charge on the second and output capacitance is retained while the first capacitance is discharged. In the event of a binary "0", the second and output capacitances are discharged via a current sink. A flip-flop is connected to the output capacitance for accelerating the discharge of the same. Switching transistors are additionally provided for activating the flip-flop to achieve the desired fast-switching.

Abstract: Holders for floating slice chamber dividers are provided with flexible bodies whereby the dividers are relieved from bending strains in their upstream attached end portions. Advantageously these holder facilitate orientation of the slice chambers of headboxes in a manner to provide for unusual compactness in headbox construction and space requirements. Purging of air from the stock flow is facilitated.

Abstract: A monocrystalline layer having select structures therein is deposited on a substrate surface from a gas phase or via a molecular beam while the substrate surface is being irradiated with two coherent particle beams superimposed in relation to one another. The coherent particle beams are comprised of particles having an energy of about 10 keV and the substrate is positioned relative to the particle beams so that a maxima of an interference pattern formed by such particle beams is located on the substrate surface.

Abstract: Method and apparatus for inserting an address signal in a video signal by compressing the SMPTE (Society of Motion Picture And Television Engineers) time code signal and then inserting the compressed time code signal into three successive vertical blanking periods of the video signal. The invention allows the time code signals to be reconstructed where the record medium is stopped or transported at very low speeds.

Abstract: An extension and retraction mechanism for a three section extensible boom is disclosed utilizing an internally disposed hydraulic cylinder connected between a stationary boom section and an intermediate boom section with a cable connection located entirely interior of the boom having opposite ends anchored to opposite ends of the stationary section with the cable routed around sheaves on the moving end of the hydraulic cylinder and a base end of the intermediate boom section with a cable attachment to the base end of the inner boom section, the inner boom section being the most extensible boom section.

Abstract: A method and apparatus for producing a light conducting fiber having a core disposed in a loose fitting cladding tube characterized by a double crucible arrangement having a first crucible for a melt of the material for the cladding tube and a second crucible for the melt of the material of the core. The second crucible has an orifice of a given diameter and the first crucible has a ring-shaped orifice with an inner diameter greater than the given diameter of the orifice of the second crucible with the center of the ring-shaped orifice being arranged substantially on a central axis of the orifice of the second crucible so that a core drawn from the orifice of the second crucible is substantially concentrically disposed within the tube of material drawn from the ring-shaped orifice.