Abstract: An apparatus for use in coating a selected area of a surface of a body, such as a flat disc type body, includes a support member having a recess in one side which is adapted to receive the body and an opening through the bottom of the recess which is smaller than the recess. A cup-shaped cover plate is adapted to fit into the recess in the support member. The cover plate has a bottom which is adapted to engage the body and hold it firmly against the bottom of the recess with the surface of the body to be coated being exposed through the opening in the support member. A mask of a magnetic material is adapted to fit in the opening in the support member against the surface of the body. A permanent magnet is adapted to be seated against the bottom of the cover member and attract the mask to hold the mask against the surface of the body.

Abstract: Silicon films in integrated circuits are mass produced with reduced structural defects by passing a reactant gas which contains silicon over a batch of wafers in a quartz chamber to deposit a silicon substance on both the wafers in a quartz chamber and the quartz walls of the chamber; repeating the passing step on other batches of wafers until the thickness of the silicon substance on the quartz walls exceeds a predetermined limit; directing a forceful stream of gas against the quartz walls to knock microscopic particles of the silicon substance therefrom; removing the knocked-off microscopic particles from the chamber; and continuing the passing and repeating steps with no intervening acid etch of the silicon substance on the quartz walls.

Abstract: A device for holding one or more substrates, each of substantially circular profile, especially in vacuum coating apparatus. In a vertical plate there is provided an opening on whose edge holding means are provided into which each substrate is fitted. In accordance with the invention, the opening has in its bottom area an approximately semicircular radial groove which is defined on both sides by semicircular rims. In its upper portion the opening has on one side a lip which merges with one of the rims in the lower part of the opening. On the other side there is disposed a counterbore offset eccentrically upward from the opening, whose radius is at least as great as the radius of the groove bottom. In this manner an insertion opening is formed on one side of the plate for the eccentric insertion of the substrate.

Abstract: A device for fabricating a target of a lasing material and a pump material or lasing at X-ray wavelengths wherein one of the materials occurs naturally as a gas. A substrate of the other material is cooled below the freezing point of the one material occuring naturally as a gas. Then a gaseous atmosphere of the latter material is supplied to the cooled substrate so that a frozen layer of the latter material condenses onto the substrate to form the target.

Abstract: A process for the partial hot dipping of a long steel strip is disclosed which comprises forming an oxidation-inhibiting film, oxygen-impermeable and thermally stable in a hot-dipping bath, which film is produced by the chemical reaction of an iron content in the steel strip with an oxidation inhibiting film-forming agent, such as an inorganic phosphoric acid compound, on a predetermined area of the steel strip surface, forming, as required, an intermediate layer comprising an inorganic binder, such as water glass, on the resulting film, forming a carbon-containing, plateing-stopping film as a top coat on the intermediate layer, and hot dipping the steel strip.

Abstract: A method for insulating slots of a rotor in an electrical rotating machine comprises steps of removing punching oil from a rotor core assembly by heating only the interior of the slots to a high temperature while axially compressing the rotor core assembly, applying a liquid electric insulating paint to the inner wall surfaces of the slots by introducing the paint only into the slots and then discharging the paint from the slots while pressurizing the rotor core assembly, applying a negative pressure to the lower ends of the slots to remove the paint collected at the lower ends of the slots, and heating at least the interior of the slots to bake the paint on the inner wall surfaces of the slots.

Abstract: A method is proposed for through-contacting a circuit board (17), in which the wall (15) of a bore (16) is provided with a metallizing of a conductive thick-film paste (12). The application of the metallizing is effected in a particularly advantageous manner by imprinting the electrically conductive paste (12) by means of an elastically deformable imprinting stamp (11, 12).

Abstract: A paint sprayer is disposed substantially on the axis of an almost closed (omega-shaped) loop formed by a transporter. Its axis of rotation is aligned so that the area in which the sheet of atomized paint it produces intersects the cylinder defined by the axes of the objects to be painted lies in an area contained between but reaching as far as circles delimiting the part-cyclindrical surface over which the objects move. An annular nozzle connected to a source of pressurized gas is disposed behind a rotating bowl of the sprayer so that an annular gas jet is directed onto the initial part of the thin sheet of atomized paint. The pressure of the gas fed to this nozzle is modulated periodically so that the aforementioned intersection area reaches the delimiting circles alternately and periodically.

Abstract: There is disclosed a process for preparing superficially porous macroparticles comprising spray drying a specified well-mixed slurry of core macroparticles, colloidal inorganic microparticles and a liquid and sintering the resulting product to cause a 5%-30% decrease in surface area.

Abstract: An enameled wire having resistance to overload which comprises an electric conductor and a baked wire enamel coat is disclosed. The wire enamel coat is applied to the conductor through a die from wire enamel comprising a silicone resin having incorporated therein 50 to 200 phr of particles of an inorganic tabular crystalline material that have a maximum average particle size not greater than 80.mu., an average not greater than 40.mu. and an average aspect ratio between 30 and 100 and which react with the silicone resin at elevated temperatures to become a ceramic and which have been surface-treated with a coupling agent, a surface active agent or a coating agent. The tabular crystals in the wire enamel coat are orientated parallel to the surface of the conductor. The enamel coat has good adhesion to the conductor and will not easily crack or peel off the conductor even when subjected to high temperatures and adverse physical stress.

Abstract: A device for laying down a plastic bead on an essentially plane surface of a part consists of a table supporting a movable frame having a drive track. The drive track cooperates with a pinion rotatable about an axis fixed to table so as to drive the frame. The part is mounted on the frame. A slotted rod is fixed to the frame and cooperates with a roller mounted on the table for preventing the frame from rotating about itself. A gun for depositing the bead is positioned above the axis of the drive pinion. As the drive pinion rotates the frame, the gun will deposit a bead on the part mounted on the frame along a line corresponding to the contour of the drive track.

Abstract: A variegated coat is produced by the steps of preparing a synthetic emulsion coating composition containing a body pigment and a color pigment in a combined concentration higher than critical pigment volume concentration as well as a high boiling organic solvent or plasticizer, applying said coating composition on a surface, and polishing locally the resulting film after drying but while at least a portion of said solvent or plasticizer is still present in the surface layer of the coat.

Abstract: The resistivity of a conductor of a refractory metal such as molybdenum is reduced by converting at least a portion of the conductor into a layer of molybdenum nitride in an atmosphere including ammonia at a temperature in the range from about 400.degree. C. to about 850.degree. C. and thereafter heating the conductor in an atmosphere including dry hydrogen in the range from about 950.degree. C. to about 1000.degree. C. for a time to convert the layer of molybdenum nitride into molybdenum and to convert molybdenum oxides in the conductor into molybdenum.

Abstract: Apparatus and a process for coating continuous lengths of filaments are described. The apparatus includes a tubular vessel for applying a fluid coating to a plurality of traveling filaments which are then separated and passed through drying and curing zones in separate and appropriate ovens. The method of the invention, carried out in the apparatus of the invention, is particularly useful to apply special coatings to continuous lengths of hollow fibers to prepare composite hollow fibers useful as separatory membranes.

Abstract: This invention relates to a method for the application of a coating composition containing Refractory Hard Material to a cathode substrate to prepare an aluminum wettable cathode surface.A mixture of Refractory Hard Material and carbon system is applied to a cathode substrate, cured and carbonized to a non-graphitized carbon matrix containing Refractory Hard Material, characterized by strong bonding of said matrix to said substrate and an ablation rate of said carbon matrix similar to the combined rate of wear and dissolution of the Refractory Hard Material.

Abstract: A magnetic recording medium which has dynamic range (I) of 70 dB or more and dynamic range (II) of 45 dB or more in control of a thickness of a magnetic layer and magnetic characteristics wherein said dynamic range (I) is given as a difference between an output at 3% input level of third harmonic wave output at a wavelength of 237.5 .mu.m in the optimum bias recording by a head having a recorded width of 1 to 1.1 mm based on an output of the original signal and a reproduced output calibrated by auditory sense calibration at non-signal recording in the bias and said dynamic range (II) is given as a difference between a saturated output at a wavelength of 4.75 .mu.m under the same condition and the reproduced output calibrated by the A-curve calibration at non-signal recording in the bias.

Abstract: A sealant applicator assembly (20) for mounting to an automatic drilling and fastener installation machine to apply sealant to the tip or shank surfaces of varying grip-length fasteners (24,53) before "wet" installation of the fastener into a hole. The assembly includes a pair of valve members (32,35) controlling the flow of sealant into contact with the fastener shank: one valve member (32) being opened or actuated by physical engagement between the valve member and the fastener tip when the shank length of the fastener being installed is sufficient to engage the valve member; and a second valve member (35) being opened or actuated by engagement of means (52) on the fastener installation machine when the shank length of the fastener being installed is insufficient to permit physical engagement between the fastener tip and the first valve member.

Abstract: In devices comprising closely spaced metallized regions deposited upon a dielectric substrate, in particular acoustic wave devices, electric fields may arise between the regions due to pyroelectic effects or acquired static charges during production or subsequently. These fields can cause damage by arcing or cracking of the substrate. The present method overcomes this problem by providing resistive links between such regions so that the fields do not arise. Preferably the links are of metallizing formed simultaneously with the metallized regions. Application to a SAW convolver is described in which the links are strips of metallizing (7,8,9).

Abstract: A method of improving the physical and electrical properties of polymer insulation coated electrical conductors is described. A non-ionic surfactant added to an organic solvent solution of insulation polymer followed by coating the solution on the wire, drying and curing, has been found to produce a coated magnet wire with improved concentricity and smoothness, therefore resulting in improvement in other wire properties as well.

Abstract: In forming a magnetic film pattern of permalloy by photoetching, the permalloy magnetic film formed on a substrate is etched in an etching solution containing ferric chloride, hydrochloric acid and phosphoric acid, thereby gradually reducing the thickness of the film pattern at the side edges in a tapered state. The permalloy magnetic film can be easily taper-etched without any deterioration of magnetic properties of permalloy magnetic film and substrate surface, but with a greatly improved yield of magnetic film head production and a greatly improved reliability.