Abstract: A step-on actuated foot switch is disclosed preferably for use in connection with X-ray examination devices to automatically turn off motor servo drives when an operator's feet are positioned adjacent moving portions of the X-ray examination device. The switch device includes a support plate having a step-on plate suspended above the floor plate and parallel thereto with interposed switching elements which are actuated by relative movement of the two plates. The switch elements are bent spring contact devices which have fulcrum points positioned thereunder about which portions of the spring bend during relative movement of the two plates to break a contact.

Abstract: A method of depositing a plurality of epitaxial monocrystalline layers of semiconductive materials onto an individual substrate of a plurality of substrates via the sliding liquid phase epitaxy technique whereby the spacing between respective melt-containing chambers and respective substrate-receiving recesses are substantially equal to one another and, during the deposition stage, the temperature of all melts located on respective substrates is lowered a substantially identical amount so that a corresponding epitaxial layer grows on each such substrate.

Abstract: An erasible programmable read-only memory employing an n-chanel memory FET. A MOSFET is used having a floating memory gate which includes erasing projections ("tongues") on the floating memory gate. One tongue covers the drain and the other tongue covers the source. Erasing occurs bit-wise via the drain-side tongue; erasing word-wise or matrix-wise via the source-side tongue. Bit-wise, word-wise and matrix-wise erasing is obtained as desired. It is applicable for REPROM chips, and in particular, for programmable memories of miniature calculators.

Abstract: In the illustrated embodiment, a single counterweight suspended on a traction cable compensates a plurality of differently moving apparatus parts and is of significantly lesser weight than corresponds to the sum of weights of the compensated apparatus parts. The cable is shown as coupled with the sighting device beneath the patient's support as well as with the carrier column for the X-ray tube while yet being operable to simultaneously compensate the torque of the carrier column in different orientations of the patient support, including a vertical disposition.

Abstract: A switching matrix utilizing connection modules, for the connection of peripherally arranged electrical measuring devices, over selectable lines of a line group specifically associated with a matrix, to the peripheral terminals of specimens to be measured, such as electrical components, circuit board, assemblies, communication devices and the like, wherein the connection modules are designed with two poles, each of which is selectively connectable to a respective peripheral terminal of a specimen or a device over controllable switching means, and further controllable switching means for selectively connecting the first pole of a connection module to the second pole thereof at the matrix side of the first mentioned switching means associated with such second pole, in the event said last mentioned switching means is open, each of such poles providing access from such a terminal to separate line subgroups, from which a line is then selected over additional controllable switching means.

Abstract: A cathode for polarographic measurements in physiological medium, such as measuring oxygen partial pressure in a human or animal body, is comprised of an elongated cable having a conductive filament, such as a steel wire or a carbon fiber enveloped within an insulating material, such as a layer of polyurethane and sheated in a body-tolerable insulating material, such as a layer of polytetrafluoroethylene. The proximal end of the conductive filament is coated with a layer of a precious metal, such as gold or platinum, and the front face of the cable is provided with a layer of an oxygen-permeable electrically conductive membrane, such as composed of polymethylacrylate or polystyrene. The distal end of the conductive filament is connected to an electrical source, a signal display means and/or a signal processing means.

Abstract: An electronic musical instrument incorporates a single integrated circuit chip for performing a variety of logical operations for the production of chords and various accompaniment signals automatically, in response to depression of one or two keys within a related portion of the keyboard of the instrument. A multiplexer is employed, in association with the keyboard, to produce a train of signals in response to depression of one or more keys, and one or more function control switches; certain ones of these signals are used to address a plurality of read only memory devices for the generation of the several components needed for the mode of operation which is selected. In an automatic chord mode, a chord is selected automatically, corresponding to an operated key of the keyboard. The chord components include the root, the third (which may be selectively minored), the fifth, the sixth and the seventh (which can be selected or not).

Abstract: A technique for sulfonating petroleum oil feed stocks which materially increases the extent of reaction between the sulfonatable components present in the feed stock and sulfur trioxide, and yields an improved sulfonated product. The invention provides a method which includes forming a liquid mixture of a petroleum oil feed stock and an organic additive, feeding such mixture to a reaction zone, and contacting the mixture with a reactable sulfur trioxide material. The additive appears to promote continuity of materials during the reaction in such a way that substantially homogeneous product compositions are obtained. The invention also includes the so-attained reaction products. Methods of neutralizing, digesting, purifying and other treatments to improve product utility are taught.

Abstract: A color signal modulating system for a color television camera having two CCD's as image pick-up devices for converting optical images into two color signals at alternate scan lines and into a third color signal at consecutive scan lines. Means are provided for developing two color difference signals, one of which is developed from alternate lines of scan. The color difference signals are used to modulate a carrier signal at alternate lines, and means are provided to derive sequentially modulated first and second color difference signals simultaneously at an output of the signal modulating system.

Abstract: In one mode, laminographic images are produced by sequentially pulsing a series of X-ray tubes, and by step-wise shifting of the image field of an image intensifier in an opposite sense so that each image of the desired layer is superimposed at the image intensifier output. The amplitude of the required magnetic deflection of the image intensifier is a function of the depth of the layer, and may be calibrated to represent the length dimension of a selected layer region. In another mode, a transverse sectional image is scanned by progressively increasing the magnetic deflection after each cycling of the X-ray sources, so as to scan at successive depths. With a video camera scanning the image intensifier output, one video line of each field may be stored for each depth, and then read out to display the cross sectional image. By storing different lines for respective different depths, oblique sections may be recorded.

Abstract: For the manufacture of a dielectric with inner blocking layers on the basis of barium titanate smooth fragments, that is a finely ground material after sintering whose composition is equal to or approximately equal to the composition of titanate powder, is added to the titanate powder, which is then transformed through pre-baking before pressing of the desired solids. The addition of such smooth fragments reduces the tolerance on electrical parameters of the dielectric.

Abstract: A method and apparatus for producing rastered printing forms, in which an image pattern is opto-electronically scanned to obtain an image signal, and the printing form production is effected by means of an energy beam recording device controlled by the image signal, whereby the raster points are recorded in a raster network having arbitrary raster angles, by means of relative motion between the printing form and the recording device, in which the pattern to be reproduced is scanned to simultaneously provide image signals for a plurality of adjacent image points of such a pattern, following which, for the control of the recording device, the image signal of that image point is selected whose local position on the image pattern is congruent with the local position of the raster point to be presently recorded, in the formation of the desired raster angles.

Abstract: In one illustrated embodiment two detector arrays are arranged in parallel and only one detector array is impinged upon by the primary radiation beam, the second detector array detecting only the scatter radiation due to the primary beam. Preferably, the second detector array is arranged so as to receive substantially a maximum intensity essentially equal to the scatter radiation impinging on the first detector array. In one example, the output of the second detector array may be simply subtracted from the output of the first detector array so as to obtain an accurate measure of the transmitted primary radiation. In an alternative embodiment, a single detector array is shifted to a second position for detecting only scatter radiation substantially corresponding to the scatter radiation mixed with the transmitted primary radiation.

Abstract: The jacket material of welding rods is removed and processed for reuse, and the rods are cleaned and processed for reuse by delivering the jacketed rods to a ball mill, grinding the jackets from the rods within the ball mill by oscillating the jacketed rods in the environment of equally long cylindrical grinding bodies while holding the rods and the grinding bodies against axial movement and in generally parallel disposition with respect to one another. The detached jacket material is conveyed continuously from the grinding chamber and further comminuted, the transport of the ground material being supported by flowing a fluid through the grinding chamber. The fluid may be a gas or a liquid and may contain a chemical reacting agent for an after treatment. The fluid may advantageously be circulated, freed from the solid material transported thereby, regenerated and/or heated. Both neutral and chemically reacting fluids may be alternately employed, depending on the particular materials involved.

Abstract: A method and apparatus for adjusting an electrical characteristic of an electrical component of an electrical network which network comprises a stack of secured together foils or layers which include one or more synthetic foils each having a metal layer on one or both surfaces and a cover foil and has connecting wires which are fused through the cover foil and welded to the desired spots on a metal layer characterized by trimming at least one of the metal layers to obtain the desired electrical characteristic by directing a laser beam through at least one foil and focusing the beam on the metal layer being trimmed. To prevent inadvertent and undesired trimming of a metal layer while trimming a given metal layer, one of the synthetic carrier foils may be of a material which is impervious to the laser beam or may be provided with a reflective metal layer.

Abstract: A semiconductor material, such as elemental silicon, is deposited on heated rod-shaped mandrels from a reactive gas stream capable of pyrolytically depositing silicon wherein the gas stream is regulated in such a manner that the silicon deposition rate remains constant per cubic centimeter of mandrel surface throughout the deposition process.

Abstract: Ink supply system for supplying a stream of ink from an ink reservoir to a piezoelectrically operated printing jet of an ink jet printer. The system includes a conduit interconnecting the reservoir to the printing jet in which is mounted a capillary filter. The conduit includes an elastic portion on the downstream side of the capillary filter and a ventable air receiver on the upstream side thereof.

Abstract: The invention relates to a safety circuit for a data processing system comprising two micro computers which operate in a redundant fashion receiving similar inputs and having similar output lines conveying coincident or corresponding signals during proper operation which are indirectly connected to a common push-pull amplifier. A transformer is connected in circuit with the push-pull amplifier and a conversion circuit constructed from the flip-flop trigger elements produces a pair of signals for operating the push-pull amplifier when the signal pair logic 1 exists. When the signal pair of logic 0 exists, the push-pull amplifier does not operate. The conversion circuit operates in connection with a clock pulse current supply for the two micro computers so that in the case of malfunction, no clock pulses are produced.

Abstract: An improved integrated magnetic head structure of the type having a plurality of thin metal layers forming a magnetic head winding. These layers are generally symmetrical to a plane of symmetry lying perpendicularly to a gap plane on a non magnetic, insulating substrate, and these layers have flanks which are, with increasing distance from the substrate, shortened by a predetermined length distance. This head structure requires only a few masks to make with a minimum of mask adjustments. Extremely fine structures can be produced.

Abstract: A Punch and Stripper Assembly for use in a punch press includes a punch with a shoulder at an intermediate portion thereof, a head threaded onto an end of the punch for being engaged by the ram of the press, a compression spring engaging the head, a washer engaging the opposite end of the spring, a retainer acting between the punch shoulder and the washer, and a stripper sleeve for acting between the workpiece and the retainer, whereby the position of the head on the punch provides a preload to maximize spring life, as well as to control the effective height of the assembly with respect to the ram. With this assembly, no special tooling is needed to assemble it. The retainer can be inverted to alter the retractive position of the punch shoulder. .Iadd.