Abstract: A method of cleaning and coating water conducting pipes is provided wherein a mixture of water and compressed air is forced through the emptied pipe system to rough clean such system, a pressurized acid is introduced into the pipe system and allowed to react with the interior surface of the pipes for a predetermined period of time. The acid is then drained from the pipes, and the interior of the pipes is dried by compressed air. A pressurized liquid plastic is then introduced into the pipes to coat the pipes with the excess plastic being subsequently drained from the pipe system.

Abstract: The device for spraying a coating on the internal faces of a vessel (2) for the transfer of molten metal such as a tundish comprises a spraying lance (3) secured to a carriage (4).The carriage (4) is capable of displacement in translational motion on a guide (6; 106) which extends in a first longitudinal or transverse direction (D; L) of the vessel (2) and which is in turn capable of translational motion on guiding means (7; 107) extending in a second direction (L; D) which is transverse with respect to direction (D; L) aforesaid. These guiding means (7; 107) are themselves mounted on a suppport (8, 12) which is capable of translational motion in the longitudinal direction (D).

Abstract: A method for coating an armature of a rotary electric apparatus conducts the coating process step by step in first and second processes for coating the external circumference of an armature with a coating material. The second coating process is conducted after the first coating material already coated by the first coating process is gelled to a hardened state.

Abstract: A method whereby the thickness distribution of a vapor deposited layer, such as an interference filter deposited on a skirted substrate such as a glass faceplate for a projection television tube, is improved by shielding the substrate from indirect flux of vapor so as to reduce the shadowing effect of the skirt upon the thickness distribution of the deposited layer, thereby improving the white field uniformity of the resultant projection image.

Abstract: A permanent fogging system comprising a selected amount of a reactive free-radical polymerizable acrylic or substituted acrylic monomer, a low molecular weight glycol carrier and an effecive amount of a free radical initiator.Another embodiment involves a method of sealing a pipeline by spraying or applying the fogging or misting system described above.

Abstract: A method and apparatus for spraying a solid particulate powder onto the interior surface of tubular articles by intermittently pumping the powder from a fluidized bed of powder through a powder supply line containing an intermittently operated venturi pump and air amplifier, as well as a pair of constantly operated air diffusers and an electrostatic charging apparatus. A powder collection shroud adjacent at least one open end of the tubular article has a carefully regulated vacuum applied thereto in order to collect oversprayed powders.

Abstract: There are formed at the wall of the friction spinning element bores or holes with a predeterminate bore diameter and a coating on their side facing a fiber feed duct, the coating extending over the bore edges into the bores or holes. Each bore or hole thus formed has a diameter at the bore or hole entrance or inlet which is smaller than the bore diameter of the related bore or hole. Each bore or hole has a cross-sectional area of less than 0.283 mm.sup.2, but amounting to at least 0.07 mm.sup.2. In this way, the undesirable penetration of fibers or fiber parts into the bores or holes is prevented as far as possible when air flows through the bores or holes at the side of the coating, while retaining a hole form or configuration which is favorable from the standpoint of airflow and blockage of the bores or holes.

Abstract: The invention relates to a method for the manufacture of colored egg packages, apparatus for carrying such a method into effect and egg packages manufactured by this method. The invention concerns a method for the manufacture of colored egg packages (6) made from wood pulp and/or waste paper (paper pulp) in which the egg package receives its final outside color only after the moulding phase by subsequently spraying-on (3) a dye, an apparatus for the carrying such a method into effect and egg packages manufactured by this method.

Abstract: Cylinder liners for internal combustion engines, particularly diesel engines, are described the liners comprising a metal outer sleeve having therein an inner sleeve comprising a ceramic material which is held by compressive hoop stresses under all normal engine operating conditions, the inner sleeve extending over at least a part of the axial length of the liner. In a preferred embodiment the inner sleeve comprises a composite material of two different ceramic materials. For example an inner sleeve is described having a silicon nitride working surface with a layer of partially stabilized zirconia thereon.

Abstract: A method and installation for applying an insulating refractory coating comprising at least two layers of equal of unequal thickness, of different compositions and equal or different water contents, onto surfaces such as the interior of metallurgical vessel (1). At least two aqueous pasty hardenable products are successively applied to the surfaces. In the case of each layer of different material, the corresponding products, which are pulverulent and/or fibrous, are successively supplied, continuously or discontinuously, through a single means (10) for spraying the surface to be coated.

Abstract: The coating for the metallurgical vessel (1) comprises a permanent refractory lining (2) and a refractory wearing layer (4) which is constituted by an aqueous slurry containing inorganic particles and a binder. The coating further comprises a waterproof layer (5) between the refractory lining (2) and the wearing layer (4). The coating serves to prevent water derived from the wearing layer from penetrating into the permanent lining.

Abstract: The specification describes and claims a method of producing a foamed mass having a density of less than 150 kg/m.sup.3 adherent to surfaces of a cavity which comprises inserting into the cavity a foamable composition formed by mixing impinging jets of two or more parts of a foamable silicone composition capable of curing at 20.degree. C. within 2 minutes to provide a foamed mass having a density of less than 150 kg/m.sup.3. The Compositions comprises (a) one or more polysiloxanes having not less than three alkylhydrogensiloxane units per molecular, (b) one or more polysiloxanes having not less than two silicon-bonded hydroxyl groups per molecule, (c) one or more compounds having carbon-bonded hydroxyl groups present in a proportion to provide from 0 to 2% by weight of the composition, (d) a polyorganosiloxane compriing [F(CF.sub.2).sub.m (CH.sub.2).sub.n O].sub.p SiO.sub.4-p/2, R.sub.3 SiO.sub.1/2 and SiO.sub.

Abstract: The present invention is an improved plastic container having both improved thermal resistance and improved aroma and flavor barrier properties. The container comprises a polyethylene inner layer having a thickness in the range of 0.5 to 10.0 mil, and a coextruded polypropylene outer layer having a thickness such that the ratio of polypropylene to polylethylene is at least 2:1, and wherein the surface of the polyethylene layer has been treated with a reactive source of fluorine.

Abstract: A composition for the pre-treatment in aqueous form of a surface, preferably of an oven, which is subjected to heat and is liable to soiling by baked-on organic food deposits. A food-safe, inorganic thickening agent, in an amount sufficient so that the composition is capable of forming a continuous coating adhered to all desired portions of the preferably cleaned surface, which coating also remains continuous as the coating dries, preferably by heating, is combined with an alkaline, water-soluble inorganic salt in an amount sufficient so that the composition is readily removable with water or an aqueous solution after the composition has been dried and soiled. The composition forms a continuous film after drying. After the film becomes soiled, it can be readily removed by contact with water or an aqueous solution.

Abstract: Can barrels of uniform diameter produced from a can barrel forming device by forming a square-shaped blank into a tubular shape with opposite edges joined linearly, are conveyed successively coaxially in spaced relation at a first speed with the joined areas of the can barrels directed upwardly. Then the can barrels are conveyed at a second speed slower than the first speed such that the open edges of the can barrels are coaxially spaced closely with small gaps left therebetween. Paint is continuously applied to the inner and outer surfaces of the joined areas while the can barrels are being conveyed at the second speed with the open edges of the can barrels being closely spaced by the small gaps.

Abstract: An inner surface coating method for a piping having a step of causing an adhesive agent or a lining material to adhere to a curved portion of a pipe and sticking a reinforcing material transported by gas flowing inside the pipe at a constant flow speed of 1 to 120 m/sec to the adhesive agent or the lining material, and an inner surface coating device having a reinforcing material supplier using a reinforcing material, dispersion unit constituted by a closed primary dispersion tank for mixing the reinforcing material from a supply tank with gas supplied under pressure from a blower and by a closed secondary dispersion tank incorporating a dispersing rotary blade rotated by reinforcing material mixed gas supplied under pressure from the primary dispersion tank.

Abstract: An apparatus for coating the internal surface of a tubular object having an irregular internal surface which comprises a combination of arms which enable the torch to be in the optimal coating position as it moves over and coats the internal surface.

Abstract: In the vapor deposition of tin on to a surface such as a polymeric film (3) to be used for packaging, a dispersion of titanium hydride (17) in a dispersant is applied to the interior surface of an evaporation boat (9) and the dispersant is evaporated before the boat is used to vaporize tin metal under vacuum for the purpose of metallizing the surface.

Abstract: The present invention relates to a process and apparatus for painting golf holes. The apparatus comprises a substantially planar disk base member having a central opening and an integral skirt to be placed over the hole to prevent the inadvertent application of paint to the grass surrounding the hole. The apparatus further comprises a receptacle attached to the base for receiving and positioning a can of spray paint so that the paint discharge opening lies at a desired position within the confines of the hole. To paint a hole, a can of spray paint is placed in an inverted position, inserted into the receptacle until a push button for initiating a spray of paint is depressed against a stop and rotated one full turn.

Abstract: Cup lubricating process and apparatus in which cup-shaped can bodies are controllably conveyed in spaced relationship to each other through a lubrication application chamber. Lubricant is atomized to particle sizes permitting them to be gas borne and introduced into such chamber from a plurality of locations about the travel path for can bodies. Apertures in the bottom wall of such chamber direct lubricant particles directly into the open ends of such can bodies for flow impingement deposition on internal surfaces thereof. Provision is made for augmenting surface deposition by electrically charging at least a portion of the gas-borne lubricant particles in such chamber and electrically grounding can bodies individually during passage through such chamber. Endless loop conveyor means are provided with adjustable features enabling a travel path to be adapted to differing dimension can bodies.

Abstract: The material is applied to the inner surface by means of a carrier gas stream, provided with a swirl, conducted through the hollow space. To prevent or reduce the swirl loss, which occurs if the laden carrier gas stream, provided with the swirl, forces the stagnant air in the hollow space from this space and then the loss develops by friction on the inner surface, before and during the flow of the laden carrier gas provided with the swirl, an additional gas, not laden with the material, is conducted through the hollow space with a siwrl, whose direction of rotation corresponds to the swirl of the laden carrier gas stream. For this purpose, the device has on the outlet of a passage element (1), equipped with a swirl-producing device 3 for the laden carrier gas stream, outlet nozzles (4), which feed to the laden carrier gas stream the additional gas with a swirl, whose direction of rotation corresponds to that (5) of the swirl-producing device.

Abstract: A spraying device is drawn through an underground pipe and sprays a thixotropic resin onto the inner walls of the pipe. The resin cures and hardens, to form an internal lining to the pipe. The resin has sufficient thixotropy to enable it to be applied in a single operation to a significant thickness, preferably in the range 2 to 25 mm. The lining which is formed upon curing therefore has significant structural strength. To allow such a resin to be pumped from the surface down to the spraying device, along a significant length of tubing, the resin is firstly heated, prior to being pumped.Also disclosed is a swab for swabbing a pipe immediately prior to the application of a lining therein.

Abstract: A method is provided of treating an air-contacted surface of an air conditioning system comprising the steps of:(A) introducing to the air passage and air-borne biocide in a biocidally effective amount; and(B) subsequently introducing into the air passage an air-borne biostat adapted to coat the surface with an air-driable, substantially water insoluble biostat coating, the biostat being introduced in an amount sufficient to coat the surface with a biostatically effective coating. According to another aspect of the invention, a kit is provided of interrelated parts for carrying out such treatment method.

Abstract: A process and apparatus for manufacturing self-locking fasteners in which a resin deposit of patch is applied to a portion of the threads. A resin stream entrained in a gaseous jet is directed through a nozzle which is an axial registration with the fastener. The nozzle has an end wall and an arcuate slot therein which directs application of the entrained resin to the threads of the fastener in a controlled manner.

Abstract: An apparatus for coating the internal surfaces of pipes comprises two pigs which engage against the internal pipe surfaces and are movable through the pipe, and which define an intermediate zone therebetween for receiving the coating material. A spraying device capable of spraying material in the radial direction is connected to the intermediate zone via a material feed line. Upon being drawn through the pipe, the coating material is fed to the spraying device which atomizes the material and conveys it to the internal surfaces of the pipe.

Abstract: A method of strengthening a bolt hole in a fibrous composite laminate when a hole is drilled in a laminate sheet. The method allows for increased thickness strength, bearing strength and the use of low cost high strength fasteners which may or may not be galvanically compatible through the use of plating the edges of the holes with a metal spray.

Abstract: A method and an apparatus for interior coating of hollow bodies comprising a mandrel introducible into at least one tubular body, a coating arrangement on the mandrel for applying a coating medium to an interior of the tubular body and a heating mechanism on the mandrel and arranged so as to predominantly deliver heat directly from the mandrel into a surrounding area toward the tublular body. The heat-applying efficiency of burning in a coating medium can be improved by applying the heat from the interior at least predominantly directly to one of an interior area of the tubular body just before being coated and an interior area of the body already coated to burn in the coating according to the disclosed method.

Abstract: A plastics member, such as a container, is provided with an electromagnetic screen by coating the inner surfaces with a film of zinc. The inner surfaces are prepared by shot blasting prior to arc spraying the zinc film and the shot blasting is carried out using G17 chilled iron grit at a pressure of 15 to 20 pounds per square inch.

Abstract: A filter material comprising hydrophobic filter media treated with a wetting agent which consists essentially of a material selected from the group consisting of polysobate 20, polysorbate 40, polysorbate 60 and polysorbate 80. The wetting agent is applied by dissolving it in a solvent and spraying the resulting solution onto the filter media.

Abstract: An aluminized viewing screen structure for a cathode-ray tube includes a faceplate panel having a barrier coating and a heat absorptive overcoating comprising a plurality of layers overlying the aluminum metal layer. The barrier coating and the overcoating are applied to the panel which is preheated to accelerate drying of the barrier coating and the overcoating. The novel process includes (a) tilting the preheated panel to a 60.degree..+-.10.degree. angle relative to a horizontal plane, (b) loading the tilted panel onto a carrier, (c) and advancing the carrier by means of a conveyor in a first direction, through a spray assembly. A plurality of spray guns are mounted on a reciprocating device which moves up and down, that is, in a second and a third direction which is different from the direction of motion of the conveyor. The spray guns are directed substantially perpendicular to the faceplate panel.

Abstract: A method of strengthening a bolt hole in a fibrous composite laminate when a hole is drilled in a laminate sheet. The method allows for increased thickness strength, bearing strength and the use of low cost high strength fasteners which may or may not be galvanically compatible through the use of plating the edges of the holes with a metal spray.

Abstract: Cup lubricating process and apparatus in which cup-shaped can bodies are controllably conveyed in spaced relationship to each other through a lubrication application chamber. Lubricant is atomized to particle sizes permitting them to be gas borne and introduced into such chamber from a plurality of locations about the travel path for can bodies. Provision is made for augmented external surface deposition by electrically charging at least a portion of the gas-borne lubricant particles and electrically grounding can bodies individually during passage through such lubricant application chamber. Endless loop conveyor means are provided with adjustable features enabling a travel path to be adapted to differing dimension can bodies.

Abstract: The permeability of polymeric articles, particularly fuel tanks and fuel canisters is substantially reduced by thin varnish coatings comprising an epoxy resin, an amine containing curing agent and a flexibilizer.

Abstract: The present invention is directed to a composite plant holder and a method of making a composite plant holder. Specifically, the method comprises forming the external vertical shape of a desired plant holder by shaping metal sheet and permanently attaching opposite ends of the metal sheet to one another. This metal sheet is then placed on a flat non-adhering surface in its upright or vertical position. Next, a gel coat is applied to the walls of the metal sheet and to the open bottom. Subsequently, a mixture of resin and fiber to form fiberglass is applied on the inside wall as well as on the bottom. This results in the formation of a receptacle which has the metal sheet for outside vertical surfaces and has layers of gel coat and fiberglass for inside walls and a base. Any resin and fiber which extends beyond the top of the sheet metal is cut either while the resin and fiber have not yet hardened or after they have hardened.

Abstract: An oven for heating can ends comprising a generally elongate heating chamber having walls which closely surround a conveyor for conveying the can ends through the chamber, a source of infra-red heat arranged in the upper region of said chamber and having a parabolic reflector by means of which radiant heat is directed downwardly onto a generally narrow band which corresponds in width to the width of the region of the can end to which sealant and/or repair lacquer has been applied, said conveyor being constructed from a plurality of interconnected slat-like elements having upturned edges the spacing between the upturned edges being selected so that the edges engage narrow portions of the curled edge of the can end whereby the can end is supported with the surface to which sealant or lining compound has been applied directed downwardly so that the heat source principally heats the upwardly directed surface of the can ends, a cooling chamber of similar dimensions to said heating chamber following said heating ch

Abstract: A process for providing a corrosion resistant synthetic plastic resin coating on a surface of a concrete structure comprises cleaning the surface of the concrete structure, forming a fiber containing sprayed concrete layer having a plurality of fiber components therein, for example glass fibers or plastic fibers, on the surface of the concrete, and subsequently applying a synthetic plastic resin thereto, whereby the fiber components projecting from the fiber containing sprayed concrete layer act to anchor the synthetic plastic resin to form the corrosion resistant coating. The corrosion resistant synthetic plastic resin coating preferably contains a polyester resin, and a polymer-cement-concrete base layer may be used to help bond the fiber containing sprayed concrete layer to the cleaned concrete surface.

Abstract: A process and apparatus for high pressure impact coating of portions of workpieces such as the threaded openings in fasteners in avoidance of contaminating undesired portions of the workpieces with the coating material. A metered quantity of coating material is charged into a passageway and moved by low pressure air to a chamber ahead of an atomizing nozzle. High pressure air is introduced to the passageway and the coating material is fogged into a chamber defined by the workpiece and tooling. Proliferation and impingement of the cloud on the selected surfaces follows under vented conditions. A constriction in the vent line achieves the necessary delay and sets the system for accomplishing the coating. The machine structure facilitates use of the coating devices with a wide range of female threaded fasteners and achieves the process steps while providing for flushing the lines and drying the working structure.

Abstract: Method and apparatus for reducing the sootblowing requirements for boiler heat exchanger tubes which also reduces boiler downtime and production losses as well as energy requirements. The method involves the steps of programming the feeding of chemicals to the boiler in timed relation to a sootblowing cycle to establish a cleavage plane on the tube surfaces. The apparatus includes the feeding of a measured amount of powdered chemicals to the boiler following each sootblowing operation, which includes a storage vessel charged with a measured amount of chemical that is emptied during a chemical application cycle.

Abstract: A method and apparatus of applying a protective coating to the inner cavities of vehicle body components comprises a frame supporting a plurality of spray guns which is adapted to mount in a locked position upon the vehicle panel to be coated. Sensors indicate the presence of the frame in a locked position and send a signal to an electro-pneumatic controller. The controller includes a bank of pneumatic valves which interface with the spray guns and sensors mounted to the frame, and a programmable computer control which activates the pneumatic valves. Once the frame is positioned and sensed in a locked position, the controller activates linear actuators which move the spray guns to a predetermined, spraying position with respect to the vehicle body component. Sensors indicate the presence of the spray guns in such spraying position, and send a signal to the controller.

Abstract: Anionic water soluble carboxyl-containing polymers, deposited and dried on polymerization reactor surfaces exposed to polymerization mixtures, substantially reduce or eliminate undesirable polymer build-up on reactor surfaces during aqueous polymerization of vinylidene monomers, even when the amount of carboxyl-containing polymers deposited on the reactor surfaces is in an amount as small as at least one ppm of monomers being polymerized, providing a layer on the polymerization surfaces as thin as about 0.1 to about one or more microns in thickness.

Abstract: The present invention comprises an improvement upon the blown bubble process for forming thin heat sealable films from an extruded tubular structure. The utilization of a spray nozzle, internal to the extruded tubular structure, to provide a thin inner coating of a liquid polyorganosiloxane greatly reduces the internal film welding of extruded tubular polyolefin materials which internally weld at their processing temperature. Additionally, reduction of the internal welding allows films of reduced thickness to be manufactured.

Abstract: Method and apparatus for spray coating the interior cavity of a plastic bottle with a barrier material. The apparatus includes a spraying assembly for moving a nozzle body into and out of the interior cavity of the bottle while the bottle rotates about its central longitudinal axis. A spraying control system causes a predetermined amount of coating material to be dispensed to selected regions of the bottle as a function of the nozzle body linear displacement relative the bottle.

Abstract: A polymerization reactor in which the surfaces therein, which are exposed to the polymerization medium, are provided with a coating of a resin extracted from pine wood whereby polymer deposits on such surfaces are substantially reduced and/or easily removed, and method for treatment of same.

Abstract: Sprayable urethane resin compositions and a process for preparing the sprayable resin compositions particularly with reinforcing materials such as chopped fiberglass, which process comprises reacting generally equal volumes of A and B side mixtures in a sprayable reaction to form a fast reacting, fast curing urethane resin, the A side mixture comprising an MDI or an MDI prepolymer prepared by reacting an MDI with a triol and a B side mixture comprising an auto catalytic, aromatic amine polyol having a hydroxyl number ranging from about 300 to 600, a viscosity reducing amount of a tetraethylene glycol and a catalyst to affect the rapid reaction and cure of the A and B side mixtures on spraying, the process may optionally include the incorporation of reinforcing materials, such as glass fibers and optionally may include the use of blowing agents to provide a lower density reinforced cured product.

Abstract: A method and apparatus for cooling and coating the inside seam of a hot welded can body. In the preferred embodiment, the apparatus includes a spray gun having a two-orifice nozzle assembly. Operation of the gun causes coating material to be sprayed concurrently from both orifices onto a seam of a can body passing by the nozzle. The first orifice emits a partially atomized spray of coating material on the seam to cool the seam and the second orifice emits an unatomized flow coat of material over the seam. The first spray acts to cool the seam making it more receptive for the coating material applied from the second orifice.

Abstract: A method of forming a refractory liner comprises the steps of granulating a plastic refractory material and immediately thereafter pneumatically gunning the granulated refractory material onto a job site without the addition of water. An apparatus for gunning a refractory material comprises a granulator, a pneumatic gunning pump and a nozzle. The granulator communicates directly with the pnuematic pump so that granulated plastic refractory material can be pumped and gunned immediately after it is granulated without the addition of water.

Abstract: A process for the selective sealing of at least one end of a cellular module, the latter having rows of parallel channels for carrying at least two different fluids. The process consists of depositing a tight material on the end of the module to be sealed. Deposition is preceded by a preblocking operation using a material in the channels to be sealed which does not contribute to the actual sealing, but which serves as a mechanical support during the deposition of the sealing material, whereby only those channels having the preblocking material are sealed.

Abstract: This is a method for coating the inside of a pipe with a wear-resistant material and is more specifically concerned with an improved production method for producing large size pipe.

Abstract: A fuel cell having good resistance to compressive creep includes electrodes having a superstructure of porous electrically conductive foam with surface sections adjacent to opposing surfaces of an electrolyte matrix impregnated with electrode catalyst materials. The catalyst materials are affixed in sections contiguous to an inner major surface by sinter bonding, electrochemical bonding or restrictive interstitial spacing. The outer sections of the porous plaque thickness are reserved for gas distribution to the electrode catalyst. Oxidant and fuel gases can be separately manifolded into alternate sides of a fuel cell stack by sealing opposing edges of the porous plaques containing the anode material in one set of opposing side surfaces and sealing opposing edges of the porous plaque containing cathode material in alternate side surfaces of the stack.

Abstract: A method of powder coating the inside of tubular goods, such as oil field pipe and the like, by connecting one end of the pipe to a means for producing a flow of compressible gases therethrough. The other end of the pipe is open to atmospheric pressure. A valve means is connected upstream of the pipe between the inlet end thereof and a container for holding a single charge of plastic powder. The charge of powdered plastic is isolated upstream of the pipe inlet. The charge is of sufficient size to coat the entire inside peripheral wall surface of the pipe with a substantial uniform coating of plastic.