Abstract: Injection molding a tread on an annular tire casing (44) positioned in a mold (10') by introducing a fluid molding compound (76',78') at high pressures and high temperatures into a tread molding space (105) through runner passages (114) extending from an edge (116) to a centerplane (20'--20') of the mold (10') and having gates (118) opening into the tread molding space (105). Alternatively the runner passages (56,58) may be defined by annular runner surfaces (60,62,64,66) in communication with the tread molding space (48) through annular gates (52,54). The fluid molding compound (76,78) may be ejected from annular transfer recesses (68,70) in the mold (10) by squeeze rings (84,86) movable into the transfer recesses (68,70) to introduce the fluid molding compound (76,78) into the runner passages (56,58).

Abstract: A coaxial line as a rigid probe interposer is particularly useful for connecting an electrical tester to a high speed integrated circuit utilizes two coaxial dielectrics for spacing a center conductor from an outer conductor in the form of a holed metallic body. The line center conductor is initially coated with a first dielectric. The dielectric coated center conductor is thereafter positioned in an oversized hole within the conductive body. The annular free space existing between the inside wall of the hole and the outer circumference of the first dielectric is filled as by capillary action, with a second, liquid dielectric which flows into the fissures and cracks within the first dielectric prior to curing.

Abstract: A method is described of producing a laminated structural material which includes the steps of stacking alternately layers of thermoplastics sheet material and one or more layers of material to be laminated, the material having been impregnated with a second thermoplastics material prior to stacking, placing the stack in a pre-heated mould or press and subjecting the stack to heat and pressure for a time sufficient to cause the thermoplastics material to flow and bond together the layers of structural material to be laminated and allowing the mould or press to cool sufficiently to avoid distortion of the moulded part before removal from the mould or press.

Abstract: A copper plastic laminate is provided having a high bond strength. The copper is selected from the group consisting of copper and copper alloys and has on its surface a uniform glassy-like, substantially pore-free coating of copper phosphate. A plastic encapsulating material containing a mold release agent is adhesively bonded to the copper.

Abstract: A high density electrical connector for use between semiconductor module boards. The connector has a rigid member and a flexible member connected to it, which provides elastomeric contact pressure. The rigid and flexible members are embodied in a dual durometer rubber layer having a relatively high durometer layer for the rigid member and a relatively low durometer layer for the flexible member. The relatively low durometer layer has circuit connector leads disposed thereon on the side facing away from the relatively high durometer layer. During the positioning of the electrical conductor into the relatively low durometer layer by pressing against a circuit board, a wiping action occurs to clean dust particles and other contaminants from the connector surface prior to forming an electrically conductive bond thereon.

Abstract: A heart valve is to remain with a homogenic and smooth configuration whereby particularly unevennesses tending to form loci for depositions are to be avoided. The method is basically comprised of separately forming the flap vanes through multiple coatings and the valve case is separately made but combined with the flap vane through a common coating procedure to obtain smooth transition surfaces.

Abstract: A flash free, compression molded object which includes an insert and is formed using only one mold plate is disclosed. Molding compound is trapped in a mold cavity between the insert and mold plate. An extrusion vent allows excess molding compound and curing gases to escape from the mold cavity. Systems for forming a pin hole within the molded object and removing the molded object from the mold plate are also disclosed.

Abstract: A modular structure is constructed in which includes a wall formed of an inner and outer panel defining a cavity therebetween, wherein a perforated stud is disposed between the inner and outer panels, with one of the panels being secured to a first portion of the stud and the other of the panels being secured to a second portion of the stud such that the first and second portions are relatively movable but are interlocked in a fixed position within the cavity such that the inner and outer panels of the wall can be maintained in spaced apart relationship by a preselected distance. The method of construction includes placing one modular structure on top of another. Additionally, the retainers can be used for maintaining a wall in a selected position relative to a floor and ceiling.

Abstract: A method of overlaying sulphur concrete is adapted for use in placing sulphur concrete against or over an existing solid surface such as the exterior surface of a wall, floor, or column base. The existing surface, which typically is a portland cement concrete surface, is prepared by first applying a layer of a bituminous material containing a bitumen which liquifies at temperatures corresponding to the pour temperatures of the sulphur concrete. The sulphur concrete is poured against or over the bitumen-containing surface so that the bitumen therein melts to form a liquid slip plane. The shrinkage of the sulphur concrete which occurs during its temperature-reduction setting occurs without producing cracks because of the relative slippage permitted between the existing wall surface and the sulphur concrete.

Abstract: A method of producing a reinforced plastics toothed belt having a fabric cover on the toothed side of the belt. Formed between a molding wheel and a molding wheel cover is a mold cavity into which the liquid plastics material, the reinforcing wires, and the strip of fabric are introduced. The strip of fabric, which is resiliently extensible in its longitudinal direction, is wetted, in the unextended state, before being introduced into the mold cavity, with an adhesive agent which hardens by drying and softens again under the temperature of the liquid plastics material. After the drying of the adhesive agent, the strip of fabric is introduced into the mold cavity and is placed on the teeth of the molding wheel. In the mold cavity, the strip of fabric is heated on meeting the liquid plastics material, is made resiliently extensible again as the adhesive agent softens, and is pressed into the grooves between the teeth of the molding wheel by the plastics material.

Abstract: A process for producing a composite plastic pipe, which comprises producing a thermoplastic resin pipe (I) by an extruder, covering the surface of the pipe (I) uniformly with a continuous fibrous reinforcing material (II) impregnated with a thermosetting resin in its axial direction by a draw molding method, helically winding a continuous fibrous reinforcing material (III) impregnated or not impregnated with a thermosetting resin uniformly on the layer of the resin fibrous reinforcing material (II) by a filament winding method, thereafter curing the thermosetting resin by irradiation of ultraviolet light and coating a thermoplastic resin (IV) on the resulting product within a crosshead die in an extruder.

Abstract: For providing a molded body in the form of a predetermined pattern projecting from a surface of a substrate, such as, a flexible metal sheet, the substrate surface is first coated with a thermoplastic film and then applied against a mold plate which has a cavity in the form of the predetermined pattern opening toward the thermoplastic film, whereupon, a resin, such as, polyethylene, is injected into the cavity to form on the substrate an injection molded body having the predetermined pattern and which is bonded to the substrate through the thermoplastic film in consequence of the heat and pressure incidental to the injection molding process.

Abstract: A profile for use in the manufacture of frames for windows and the like comprises a core (1) of generally rectangular cross section of laminated plywood or cement-bonded fibrous material with a cladding (3) of plastics material, for example polyvinylchloride or polycarbonate, extruded therearound. The extruded cladding (3) provides, extending along the length of the profile, a glass (or other) panel retaining member (9) which is inclined inwardly (preferably at 45.degree. or substantially so) over a surface of the profile, and an undercut rib 11 spaced from the member (9). In manufacturing frames from the profile the latter is cut into appropriate lengths by saw cuts (31-39) extending at 45.degree.

Abstract: A decorative emblem is formed by insertion of a decorative foil shape into a preformed bezel and encapsulating and bonding the foil to the bezel with a fluent, curable plastic material. After an initial casting of a measured amount of plastic onto the base of the bezel, the foil is inserted and seated. A second cast of plastic forms a cap contiguous with the sides of the bezel and encapsulates the foil and bonds it within the bezel. Upon curing, the plastic cap gives a lens effect to the decorative emblem. The emblem may be equipped with attachment means for fastening it to an automobile, appliance, or other object. In alternative embodiments, a decorative foil shape is placed directly onto the base of the bezel, and a fluent, curable plastic material is cast thereon. As the plastic material cures, it migrates around the edges and under the foil to at least partially encapsulate the foil and bond it within the bezel.

Abstract: A precast concrete structural unit is provided including a concrete sub-unit and a plastic resinous sheet. The sheet is adhered to the sub-unit at the time of pouring the concrete, utilizing a polychloroprene contact adhesive. The structural unit may further include adhesive coated reinforcement. Among the concrete structural units which are provided is a burial vault including concrete wall portions and a plastic resinous liner. The liner is adhered to the wall portions, at the time of pouring the concrete, utilizing the polychloroprene contact adhesive. The vault may also include adhesive coated reinforcement. The polychloroprene contact adhesive is essentially a blended aqueous latex comprising hydrophilic chloroprene copolymer latex particles and emulsified or dispersed hydrocarbon resin tackifier particles.

Abstract: A prosthesis for subcutaneous implantation in a patient comprising a flexible sac and a silicone gel contained within the sac. The wall of the sac is comprised of at least one continuous layer of silicone elastomer which substantially impedes the migration of said silicone gel from the sac.

Abstract: A process for manufacturing polyurethane-coated products is disclosed. These polyurethane-coated products are manufactured by press-forming a metal material coated with a lubricant inclusive of a compound having an oxygen-hydrogen bond into a core member of a desired shape and covering necessary portions of the core member a with polyurethane foam or coating formed by reacting the compound with an isocyanate of the polyurethane forming material without degreasing steps, i.e. pretreatments for washing off the lubricant.

Abstract: A racket structure to be used in a tennis and the like racket and a method for producing it, where the handle section and the head frame section are made of a one-piece composite member including an inner light weight soft plastic core member having a central prestressed multifilament cord member and a glass fibers reinforced hard plastic, outer surrounding layer, anchored on said core member within the head frame section, said surrounding layer being covered on opposite faces with respective resilient flat cover members which also sheath part of the height of said head frame section on the inside face, facing the netting, defining the striking surface stretched in the oval space defined by the head frame section of the racket.

Abstract: An improved method for producing a reinforced hose. A tubular core is extruded and then heated in a microwave oven to at least partially cure the core. While the core is still hot, a powdered hot-melt adhesive is electrostatically coated onto the core and forms a fusion bond with the core. The coated core is cooled, a reinforcement is applied to the core, an optional outer coating is applied and then the composite is heated to finish curing of the hose and to melt the adhesive to bond the reinforcement to the core.

Abstract: A flexible heating element comprises at least two flexible electrical conductors spaced apart by a PTC material, an amorphous highly conductive rubber compatible with the PTC material and adhered to each conductor being interposed between the PTC material and each conductor whereby in use current passes from one conductor to another through the PTC material via the highly conductive rubber. The conductors are spaced sufficiently close to one another to ensure that when energized the PTC material heats substantially uniformly without exhibiting a significant temperature gradient between the conductors and that any abnormal temperature increase increases the temperature of all the PTC material between the conductors in the region of the abnormal temperature increase. The arrangement is such that in use the contact resistance between the conductors and the PTC material is reduced by the amorphous highly conductive rubber interposed therebetween.

Abstract: A method of manufacturing a raised relief, illuminated globe includes printing a hemispherical map design on a flat vinyl plastic sheet, forming the vinyl plastic sheet into a substantially hemispherical shape, positioning the hemispherically formed sheet in a mold cavity, positioning a mold core on the back side of the sheet, injection molding a styrene backing for the hemispherical shaped sheet to conform the sheet with the mold cavity including relief areas defined in the cavity wall, and removing the molded hemisphere from the mold. A second molded hemisphere is produced in substantially the same manner and is attached to the first hemisphere to form a complete globe. The printed map design of the globe is positioned in the mold cavity to insure that the relief areas are properly positioned with respect to the design.

Abstract: A release film is coated with a thin layer of metal by, for example, a vapor deposition process. The film is then stretched over a composite object, made, e.g., of fiberglass-epoxy or graphite-epoxy, which one desires to metallize. A treatment involving either vacuum or pressure and that may involve heat is used to transfer the thin metal layer to the composite object. The stretchable film is then peeled off the object, leaving a metal coating bonded to the object. The epoxy resin or other adhesive in the composite material gives structural integrity to the object as well as provides a bond for the metal, so that the composite object may be molded and metallized in one step. Alternatively, a two-step process of molding then metallizing or metallizing then molding can be employed.

Abstract: Provision of a protective cover for a fibrous layer of insulation on a conductor by forming an inner layer of the protection cover by depositing a polymeric based composition without creating a crushing effect, and then, in tandem, hardening the inner layer and applying a second coat by extrusion. The inner layer absorbs the crushing forces of extrusion to protect the fibrous layer during addition of the second layer. The inner layer is preferably formed by electrostatic deposition coating and prevents pinhole formation in the second layer.

Abstract: A prefabricated control element for high voltage apparatus, which can be slipped onto a bare or an insulated conductor, especially for fittings for high voltage cables, in the form of an electrical insulator, in which conductive layers which follow each other in the axial direction of the conductor are embedded, engaging each other, having the form of funnels and likewise consisting of elastic conductive material and having a wall thickness of 0.005 to 0.5 mm.In the manufacture of the control element, individual parts of the insulator are joined together with a material bond by means of the conductive layers which are made of a dispersion of carbon black enriched polymer.

Abstract: A method of making a keyboard including, a number of switch keys fixedly provided on one surface of a resilient plastic sheet a number of moving contacts formed on the other surface of the resilient plastic sheet. The keys are formed of a plastic material having a melting temperature lower than that of the resilient plastic sheet.Thermoplastic bond layers are deposited on both surfaces of the resilient plastic sheet. The melting point of the thermoplastic bond layers is lower than that of the switch keys.The resilient plastic sheet is placed in a metal mold which has cavities (101a) at predetermined places.Melted plastic material is injected into the cavities to form the switch keys and at the same time cause the portions of thermoplastic bond layers which contact the injected melted plastic to be melted by the heat of the injected melted plastic material and to bond the switch keys onto the resilient plastic sheet.

Abstract: In the pultrusion of a fiber-reinforced plastic, an elongated fiber material impregnated with a thermosetting resin prior to setting is introduced into a long-land die, in which a thermoplastic resin and a lubricant are successively applied onto the outer surface of the impregnated fiber material thereby to make possible smooth drawing of the material through the die. As a result, the thermosetting resin is substantially set within the die, and, moreover, an elongated, fiber-reinforced, plastic composite article is produced at a reasonable speed.

Abstract: The ends of bundles of microporous tubing may be potted in otherwise conventional manner for assembly as a diffusion device for oxygenation of blood, blood plasmapheresis, or the like. In accordance with this invention, prior to impregnating the bundle ends in sealant, the micropores of the capillary tubing are filled with a liquid capable of entering the micropores, with the result that air in the bores of the tubing cannot migrate outwardly through the micropores as the sealant impregnates the bundle ends. This, in turn, prevents the sealant from advancing into the bores of the tubing to the level occupied by the sealant outside of the bores of the tubing, so that the ends of the potted bundle may be transversely cut within the block of cured sealant to expose open bores of the tubing.

Abstract: Molded product and method for providing a desired surface-hardness for its surface by means of a simple molding technique through several steps comprising the cutting of a thermoplastic film or sheet to the same form as the exterior form of the product, the placing of the cut piece on a mold-cavity surface, and the injecting of a molten resin for formation of the product into the mold cavity under a high pressure. The thermoplastic film or sheet is subjected, in advance, to a hard-coating treatment on its surface and a curing treatment to cure the agent thereon thereby forming a hard-coating layer on the surface of the product.

Abstract: The invention relates to a fused cast block useful in the construction of steel making furnaces, the block comprising a refractory oxide-based material having embedded therein a steel member which extends over the greater part of the length of the block and emerges from the block on the outer face of the latter, the steel member being embedded in the block in the course of molding the latter and having a cross-section of suitable shape and surface area to impart to the composite block an apparent thermal conductivity at between 500.degree. and 1000.degree. C. of at least 8 Kcal. m./m.sup.2..degree.C. hr.

Abstract: An unvulcanized rubber composition, whose rubber component consists of polybutadiene rubber as an essential component and at least one of styrene-butadiene rubber and a rubber of natural rubber and/or polyisoprene rubber, has a high adhesion to a vulcanized rubber composition, whose rubber component consists mainly of at least one rubber selected from natural rubber, polyisoprene rubber, polybutadiene rubber and styrene-butadiene rubber, and can be easily adhered to the vulcanized rubber composition through vulcanization without carrying out particular surface treatment of the vulcanized rubber composition.

Abstract: The invention concerns the production of an extruded plastic sectional bar, or the like profiled element, having one longitudinally extending section which has a duller surface finish and another longitudinally extending section which has a less dull surface. To accomplish this, the extrusion tool, at the outlet end, has first and second temperature control devices so that as the bar is being extruded, the first section of the bar is exposed to one temperature while the second section of the bar is exposed to a different temperature, for producing the different surface finishes.

Abstract: A method of casting decorative emblems is disclosed wherein a fluent, viscous, plastic material is dispensed by a means having a plurality of dispenser orifices onto a foil substrate typically lithographed or screen printed with an array of designs. The cast plastic melds together and forms a meniscus which, when hardened, gives a lens effect to the foil shape. The process is well adapted for automated, mass production of foil backed emblems.

Abstract: A fiber glass fabric reinforced wood sound board for a guitar is made by placing a sheet of wood in a shallow mold cavity with a layer of fiber glass fabric overlying an associated surface of the wood sheet, spreading a layer of liquid resinous compound over the layer of fabric to impregnate the fabric, providing a plate having a smooth surface, positioning the plate with its smooth surface in face-to-face engagement with the layer of liquid impregnating material to provide a substantial closure for the mold cavity, drawing vacuum on the mold cavity, and curing the liquid resinous material.

Abstract: The present invention is directed to a low cost accumulator device and the method of making the same. The device is fabricated by utilizing the shell or pressure vessel as a mold component wherein a bladder is molded in situ, the bladder being bonded in the course of the formation thereof to the interior of the vessel and preferably also to a valve member.

Abstract: A textile, such as a tape, having an adhesive coating on one or both of its surfaces is used to prevent movement of reinforcing material, usually glass fiber, from a position in a mould during the manufacture of plastics articles.The adhesive is preferably permanently tacky and is selected to be compatible with plastics material used to form the articles since the textile is incorporated in the finished plastics articles. An adhesive based on an ethylene/vinyl acetate copolymer pressure-sensitive adhesive is disclosed as being suitable for use with an unsaturated polyester.

Abstract: The invention represents an auto bumper with an exterior part which can be seen from the outside. The exterior part is made of stainless steel plate and an interior part is made of fiber reinforced plastics via a layer of aluminum or aluminum alloy.

Abstract: A decorative emblem is formed by producing a decorative surface, which may be printed and embossed, on a foil substrate. An integral bezel is then formed around the periphery of the decorative surface. Fluent plastic is cast onto the decorative surface to form a meniscus over it. Upon curing, the plastic cap gives a lens effect to the decorative surface. The decorative emblem may be adapted with several types of different attachment means, such as an edge adhesive strip, for fastening it to the intended surface such as an automobile, appliance, or other object.

Abstract: A process for manufacturing a closure cap having a liner. A mass of molten thermoplastic is positioned in the inner face of a cap shell. The mass is spread by a heated punch and the spread mass is then formed by a cooled punch to the final liner shape.

Abstract: A method of making a multi-layer ceramic substrate for an integrated circuit device package having internal circuitry by forming a plurality of porous ceramic bisque sheets, impregnating the pores of the bisque sheets with an organic binder material, forming openings through the impregnated bisque sheets, filling the openings with conductive material and imprinting conductive circuitry patterns on the surface of the impregnated bisque sheets of a conductive material, assembling the plurality of apertured printed impregnated bisque sheets into a laminated unit, and sintering the laminated unit to form a unitary laminated structure having an interconnected internal circuitry system.

Abstract: A method of applying a protective shield to a drill pipe tool joint including positioning a centering hub on the end of the tool joint, positioning a bifurcated mold around the tool joint, the mold having a rearward end engaging the drill pipe and a forward end engaging the hub thereby centering the mold on the tool joint, the internal diameter of the mold being greater than the external diameter of the tool joint providing an annular cavity defining the preselected shape of the protective shield, injecting liquid plastic material through an opening in the mold to fill the annular cavity, allowing the material to solidify, and removing the mold hub.

Abstract: A method of preparing a cushion or like padded article comprising a plasticized vinyl chloride polymer cover filled with foam in which the cover is shaped and the foam prepared in situ within the cover, wherein a superior bond between the cover and foam is achieved by coating the interior surface of the cover prior to foaming with a primer composition comprising:(A) a latex of butadiene-acrylonitrile copolymer containing a hydroxyl or carboxyl group; and(B) a latex chosen from the group consisting of natural rubber, styrene-butadiene latex and mixtures thereof in an amount sufficient to promote bonding and wherein the weight ratio of (A) and (B) is from 4:1 to 1:4.

Abstract: A process for extruding resilient, impact resistant thermoplastic strips having a metallic appearance by providing a non-metallic film strip of a material selected from the group consisting of polysulfones and polyether sulfones and having a vapor deposited metallized surface, the film strip having melting and deformation temperatures higher than those of a transparent thermoplastic to be extruded thereon and a resiliency and an elasticity at least as high as the resiliency and elasticity of such transparent thermoplastic when extruded thereon and, while feeding such film strip through a cross-head die, extruding the transparent thermoplastic about the metallized film strip and the resilient, impact resistant thermoplastic strip having a metallic appearance produced thereby.

Abstract: This invention relates to electrical articles having an electrical coil such as high-tension transformers, ignition coils and the like which are excellent in withstand voltage and endurance; and to a method for manufacturing the same. These electrical articles have an electrical coil in which a sheet material such as paper, cloth or non-woven fabric comprising cellulose as major constituent is used as at least a part of interlayer insulator. Said sheet material is characterized by being impregnated with one or more pretreating resins selected from the group consisting of phenolic resins, s-triazine ring compound resins, and phenol-s-triazine ring compound co-condensation resins and further impregnated with a thermosetting resin composition containing an epoxy resin, unsaturated polyester resin, 1,2-polybutadiene resin or silicone resin, said resin being hardened.

Abstract: Synthetic resin sheet material having a film, possibly bearing printing on at least one of its surfaces, with the film forming an integral part of the material is made by feeding the film together with a polymerizable syrup into a continuous plastic casting machine, the film being compatible with the syrup so that during passage through the machine with the syrup, the film softens and at least slightly dissolves in the syrup during polymerizing of the syrup and consequent solidifying of all of the components together.

Abstract: A mould for producing a decorated article has a base part with a mould cavity and a lid part co-operating with but being movable away from the base part, the surface of the lid part facing the base part being substantially planar or part-cylindrical and extending beyond the wall of the base part. The wall of the base part preferably has a knife edge for engagement with the lid part. The method of producing the article comprises the steps of locating in a predetermined position on the lid part a carrier having ink thereon, charging the base part with plastics material, locating the lid part in a predetermined position on the base part so that the carrier extends beyond the co-operating wall of the base part, and rotationally moulding the article.

Abstract: A method and device for embedding in a plastic block a selected part of a specimen being prepared for microscopic examination. The device has a frame with a horizontally disposed base member and a vertically disposed headboard and footboard. A mold jockey slides longitudinally along the base member. A slide jocket slides transversely to the direction of motion of the mold jockey and supports a glass microscope slide horizontally above the mold jockey, such that a mold held in the mold jockey may be moved beneath any selected location on the microscope slide. A constricted mouth of a plastic mold held in the mold jockey is pressed against a plastic impregnated specimen held to the underside of the microscope slide. The plastic is cured, embedding a section of the specimen in the face of the plastic block formed within the plastic mold. After curing, excess plastic is removed, leaving the selected portion of the specimen embedded in the end of the plastic block, with a known orientation and location.

Abstract: A method wherein uncured urethane formulations are bonded to a cured rubber or synthetic rubber substrate in such a manner so as to provide greater bonding strength than has been achieved previously in urethane formulation bonding to rubber or synthetic rubber.

Abstract: The present invention relates to a laminated insulating paper formed of cellulose paper or papers which is adhered to at least one side of cross-linked silicone grafted polyolefine film and to an oil-filled (OF) cable which insulated by the laminated insulating paper. The laminated insulating paper has outstanding peel strength as well as excellent non-solubility and anti-swelling properties in insulating oils.

Abstract: A method of making a wall of a container which wall is to be ruptured to gain access to the interior of the container, the method comprising forming a weakening in the wall corresponding to the path along which the wall is to be ruptured, locating the wall between mould tools which are formed as to one of them with a bead recess which will overlie the weakening and as to the other with a rupture recess in register with the bead recess, injecting material into the bead recess to displace the wall regions adjacent the path into the rupture recess to further weaken the connection between the wall parts to either side of the said path, and to form a seal therebetween and removing the wall from the tools.

Abstract: A pencil, in particular for cosmetic purposes, is made by casting a stick composition into a tubular body, which forms the shaft of the pencil and is preferably seamless, in such a way that a ready-to-use exposed stick point is formed during casting.The shaft may be of wood or plastics. In the case of a wooden shaft, a solid wooden rod of twice the shaft length may be bored out and otherwise worked and then separated along a central plane transverse to the axis of the rod to form a pair of shafts into which the stick composition can subsequently be cast.