Abstract: A centrifuge screen, more particularly for a thrust-type centrifuge, having screen bars consisting of a hard material and extending axially of the centrifuge drum, said bars being fixed on a supporting frame, wherein the screen bars extending axially of the centrifuge drum bear over the entire length on the supporting frame and are connected to the supporting frame by an adhesive bonding which extends over the full length of the screen bars.

Abstract: One or more MIC's (microwave integrated circuits) are included in an assembly having a structurally continuous ground plane of conductive material for the microwave circuitry. Individual MIC's are mounted on a carrier and attached thereto by a layer of a dielectric adhesive. The adhesive is in contact with and interposed between the lower side of each MIC substrate and the carrier which may be, for example, a metal chassis. The carrier serves as, or includes, the structurally continuous ground plane of conductive material. Ground plane metallization on the lower side of MIC substrates is thereby made unnecessary. The dielectric adhesive may be maintained in a liquid or tacky state to permit convenient removal from the assembly of an MIC requiring rework or replacement. In addition, the layer of dielectric adhesive provides a thermally conductive path between an MIC and the carrier making the invention particularly well suited for MIC assemblies which are intended to be operated in a vacuum.

Abstract: A landscape blanket to be used as ground cover in which particles such as crushed stone, marble chips and the like are arranged in a substantially single layer and are held together to form a blanket by sheets of transparent plastic material which conform to the shape of the particles and are bonded thereto without the use of adhesive. The plastic sheets are bonded to the particles by forcing them into contact with the particles while the plastic sheets are in a softened condition.

Abstract: This invention relates to press polishing transparencies for lightweight aircraft comprising at least one exterior sheet of acrylic resin involving the use of a polycarbonate pressing plate against the acrylic resin sheet. Both the polycarbonate pressing plate and as many sheets of acrylic resin as are included in the laminate may be press polished while flat by pressurized engagement against a smoothly surfaced flat glass pressing mold. Then, the polycarbonate pressing plate and as many sheets of acrylic resin as are included in the transparency are sag bent to conforming shapes with optional vacuum forming. The polycarbonate pressing plate so shaped is used directly against an acrylic resin surface without any parting material therebetween to press polish the outward facing surface of the acrylic resin sheet(s) so shaped and simultaneously laminate the shaped acrylic resin sheets when the latter are assembled with one or more layers of flexible interlayer material.

Abstract: High efficiency air filters are fabricated by forming two end assemblies from rectangular wall members with side plates attached to extend upwardly from opposite sides thereof. A removable wall of expendable material such as ordinary masking tape is applied to the other two sides, extending between the ends of the side plates to form a shallow pan which is filled with a liquid adhesive. The pleated filter media is attached along its two side edges to side wall members having notched ends for mating with the side plates of the end assemblies. One edge of the filter media between the two side walls is immersed in the pool of adhesive and the side walls are attached to the side plates. After the adhesive hardens, the masking tape is removed and the other end assembly is attached in the same manner.

Abstract: Custom bathing vessels are preformed away from the job site by constructing a structural plywood shell, and coating the inside of the shell with a fiberglass/resin mixture. The unit is shipped to the job site, where an asphalt-impregnated felt membrane and a surface coating, such as tile, are applied.

Abstract: A method for making decorative inlaid types of resilient sheet materials and the like comprising: depositing a substantially uniform layer of a wet, tacky, ungelled plastisol on a gelled, printed plastisol on a substrate; forming a rolling, churning bank of decorative chips or flakes over a flexible seal blade member which directs the delivery of the decorative chips or flakes from the rolling, churning bank; delivering the decorative chips or flakes from the rolling, churning bank and depositing the same on the layer of wet, tacky, ungelled plastisol, whereby, for the most part, they adhere thereto; moving the gelled, printed plastisol with its substrate and the layer of wet, tacky, ungelled plastisol and decorative chips or flakes forwardly and upwardly at an angle greater than the angle of repose for the decorative chips or flakes on the surface of the wet, tacky, ungelled plastisol, whereby some of the decorative chips or flakes slide backwardly and downwardly into the rolling, churning bank; beating or v

Abstract: One or more MIC's (microwave integrated circuits) are included in an assembly having a structurally continuous ground plane of conductive material for the microwave circuitry. Individual MIC's are mounted on a carrier and attached thereto by a layer of a dielectric adhesive. The adhesive is in contact with and interposed between the lower side of each MIC substrate and the carrier which may be, for example, a metal chassis. The carrier serves as, or includes, the structurally continuous ground plane of conductive material. Ground plane metallization on the lower side of MIC substrates is thereby made unnecessary. The dielectric adhesive may be maintained in a liquid or tacky state to permit convenient removal from the assembly of an MIC requiring rework or replacement. In addition, the layer of dielectric adhesive provides a thermally conductive path between an MIC and the carrier making the invention particularly well suited for MIC assemblies which are intended to be operated in a vacuum.

Abstract: Composite panels that include a metal skeleton of two superposed metal plates or sheets having groups of protruding bridge-shaped elements that extend into the interspace between the plates or sheets and overlap in a manner to form one or more elongated cage-like columns; a coherent matrix material made of a flowable or pourable mineral and/or organic matrix precursor is provided to substantially fill the interspace to form a substantially rigid compound structure of the panel constituents due to the plate-interlocking function of the cage-like columns. The panels can be flat or curved and are suitable as structural materials, notably as load supporting walls for buildings. Methods for producing such composite panels in a batchwise or continuous operation are disclosed.

Abstract: Method and apparatus for forming novel flexible, collapsible containers from a pair of facing sheet sections, and a stiffener bar positioned between the sheet sections, is disclosed. The pair of facing sheet sections are passed along a process path through a sealing die, with a continuous length of the stiffener bar being positioned between the sheet sections and passed along with process path with the sheet sections. The sealing die forms seal lines between the facing sheet sections to define a group of collapsible containers, each carrying the stiffener bar in transverse relation thereto. Then, at least one of the sheet sections and the stiffener bar is cut through at positions adjacent the edges of the collapsible containers, to permit the separation of the formed collapsible containers, carrying separated stiffener bar sections, from each other.

Abstract: Heavy and light denier fiber are opened, forced air transported and gravity deposited to form a stratified layer open mesh web, sprayed with resin on respective sides with the resin cured to set the fiber of the web. The web is preferably cut into sheet form and as mats deposited with the fine denier fiber facing downwardly on a formed sheet of uncured rubber, PVC or like backing material. The surface portion of the fine denier fiber layer of the stratified multi-layer mats are embedded within the backing surface material and the backing material subsequently cured to solidly lock the mat to the backing surface. The formed stratified layer mats with backing surface may be employed as bath mats or the like or the mats cut into sections to form abrasion pads.

Abstract: A vacuum induction furnace including a crucible, a gas-impervious vessel at least partially surrounding the crucible and including sealable means for obtaining access to the crucible, an electrical current-carrying coil assembly surrounding the remainder of the crucible and sealed to the vessel, the coil assembly having coolant-carrying passages and an interior surface confronting the crucible. The surface is defined by plural interfaces of electrically conducting coils and interposed electrical insulators spacing the coils and having irregularities therein. A seal seals the interior surface of the assembly and includes a layer of gas-impervious, elastomeric material reinforced by a nonelectrically conducting reinforcing matrix embedded in the layer, the elastomeric material of the layer being bonded to the coils and insulators and filling the irregularities therein. A layer of heat insulating material is interposed between the crucible and the seal. Also disclosed is a method of sealing the coil assembly.

Abstract: An electric component comprising at least two flat elements is produced by coating a side of one of the elements, a metal sheet, with a co-polymer layer or by taking a sheet having a co-polymer layer thereon, and punching first elements therefrom. The co-polymer layer is softened by heating and the second element is pressed controllably onto the first and into the co-polymer layer. The layer does not run and so maintains an insulating separation between the elements, while bonding the elements firmly together. Piezoceramic resonators and semi-conductors circuits are advantageously joined to punch-formed parts in this manner.

Abstract: Structure equivalent to conventional printed circuits is made by forming round wires, usually copper, into the shapes the conductor strips are to occupy, fixing the wires to a surface of a thin plastic sheet, and then pressing the assembly between flat opposed die surfaces to form the wires into thin flat flexible strips.

Abstract: This invention is directed to a method for making intricate inlay designs in wood and other materials. The novel method of this invention uses a laser to selectively form patterns in two pieces of material by vaporizing unwanted portions thereof. One piece of material has the negative pattern of the other piece of material. Unlike previous methods of making inlays, these patterns do not penetrate completely the thickness of the pieces. A suitable adhesive is then applied to the pieces of material. The two pieces of material are then mated together so that the vaporized area of one piece mates with the raised (non-vaporized) area of the other piece. When the adhesive has set, one surface is sanded or planed until the thickness of the joined pieces is reduced to include the area where the two pieces have been mated. This area will be an intricate inlay which will be composed of both pieces.

Abstract: A striped, flexible laminate sheet is disclosed, together with a method and apparatus for making the sheet. The sheet can include first and second plies, and an intermediate open woven scrim bonded together by a plastisol bonding agent. Atop one ply are heat-bonded one or more relatively narrow and thin polyvinyl chloride stripes. This product is manufactured by paying out sheet webs and applying a bonding agent to an underside of the top ply. Stripe material is payed out atop the top ply from payout rolls journaled on mounting arms. A heat roll and opposing nip roll join the laminate plies and simultaneously heat bond the stripe material to the top ply. The striped laminate web is then directed through chilling rolls where a web surface can be embossed with a pebbled or grained surface. After inspection, the product is wound upon a takeup roll.

Abstract: The laminate includes a partially cured, flexible acrylic face sheet having a primer layer on one surface thereof bonded to a binder layer having a layer of reflective glass beads embedded therein and protruding therefrom and a sealer layer on the exposed surfaces of the glass beads, the laminate being completed with a spacer layer bonded to the sealer layer and having a reflective mirror-like thin metal coating on the outer surface thereof. The binder layer, sealer layer and spacer layer, or films are all made from basically the same uncured polyvinyl butyral material. The method of forming the acrylic face layer, the use of soft rubber pressure rolls in bonding a glass bead carrying partial laminate to a preformed spacer film, and the method of making the laminate of the invention and the compositions used therein.

Abstract: A method of making transparent electroconductive window comprising an assembly element supporting a circuit portion electrically coupled to a novel self-soldering bus bar consisting essentially of particles of a finely divided highly electroconductive metal, such as silver, dispersed within a metal alloy having a fusion point between about 70.degree. and about 150.degree. C. A mixture of finely divided metal and of said alloy is applied to an assembly element along one or more lines in electrical contact with an electroconductive heating element carried by said assembly element. The one assembly element is assembled with other assembly elements to form a sandwich that is laminated at a temperature higher than the fusion point of the metal alloy to form a transparent electroconductive window having highly conductive, self-soldering bus bars formed along said lines.

Abstract: A label is placed in due contact with the surface of an article being extruded and then forcibly urged to a preselected depth in the plasticized article. The label and the article are thereafter cooled.

Abstract: An optical fiber band comprising a pair of thermally sealed thermoplastic films with a plurality of optical fibers in side-by-side relation and following undulate paths embedded therebetween, and a telecommunication signal cable formed by winding a plurality of such bands around an insulated metal rope. The thermoplastic films and the fibers are fed between rollers or cylinders while the fibers are undulated. The films are heated to their softening temperature on at least parts of their facing surfaces prior to reaching the cylinders. The films may each be composite films of different temperature characteristics or may be wider than the final band, heated only at their central portions and then trimmed to the final band size.

Abstract: An aggregate product comprising an aggregate, such as alumina of a size from about 1/2 inch to about 60 mesh, is bonded in a substantially continuous layer by means of conventional adhesives to a strip of fine mesh, such as nylon mesh. A viscous adhesive, such as a two-component epoxy resin, applied to the surface to be covered, bonds the aggregate-containing mesh to such surface.The method of this invention comprises coating a surface with a viscous adhesive, placing over such surface the aggregate-containing mesh, initiating pressure so as to cause settling of the aggregate-containing mesh into the viscous adhesive, and allowing the adhesive to bond the aggregate-containing mesh to the surface. Preferably, the adhesive is sprayed or rolled onto the surface and the aggregate-containing mesh is rolled out over the wet adhesive using a tape or string attached to the roll to propel it from a rolled-up position.

Abstract: Retroreflective sheeting having improved resistance to delamination is prepared by imparting a grid pattern to a monolayer of glass spheres having a light reflecting layer thereon, applying a sphere binder layer over the grid pattern imposed on the monolayer of glass spheres so as to adhere to the reflective layer on the monolayer of glass spheres, and pressure consolidating the resulting composite against a clear, protective overlay film, wherein the overlay film bonds to the sphere binder layer in the grooves formed by the grid pattern.

Abstract: Color-filled debossed indicia are provided on metal substrates. Colored tape comprising a layer of resinous film and a layer of thermoset adhesive wherein the film may be colored, the adhesive may be colored, or an additional layer of acrylic paint may be provided between the film and the adhesive, is interposed between indicia dies and the metal substrate during debossing. A portion of tape corresponding to the indicia is sheared away and deposited on the surface of the indicia. The conversion of kinetic energy to heat during the debossing operation is sufficient in some applications to permanently bond the tape to the metal substrate by means of the thermoset adhesive. If necessary, the tape may be heat treated and cooled to permanently bond the tape to the metal substrate.

Abstract: The forming of an inlaid article by carving the object to be inlaid into the article with ultrasonic energy to form a recess having the same peripheral configuration as the object, and then positioning the object within the ultrasonically carved recess in the article such that upon securing the object within the recess the object forms the inlaid portion of the article.

Abstract: A component comprising a plurality of gemstones containing visible faces and seating faces, said gemstones being mounted by their seating faces in a given arrangement and with a given mutual spacing therebetween in respective recesses in a support, said support being a continuous foil of fusion adhesive. The component is made in an apparatus that includes a plate with a heating chamber on one side and a vacuum chamber on the other. The stones are arranged in recesses on the plate with their seating faces outward, a sheet of adhesive foil (transparent or colored) is positioned thereover, heated into a thermoplastic state and drawn down by vacuum to surround and adhere to the seating faces. The component (foil with stones affixed) is then placed in a recessed jewelry setting with each stone in a recess, and again heated to fuse the foil to the setting.

Abstract: Electrical-resistance strain gages, particularly those of foil construction, are advantageously pre-packaged as conveniently-manipulatable and protected sub-assemblies in which the metal gage grid and its tabs are sandwiched between a flexible tape coated with a tacky adhesive and a partly-cured thin layer of fiber-reinforced resin, the resin layer and exposed portions of the adhesive-coated tape in turn being protected by a removable polytetrafluorethylene cover sheet; bonding of the gage to a measurement specimen is achieved without conventional cementing by removing the cover sheet, abutting the resin layer with a selected surface of the specimen, heating the layer while pressing against the tape to force the gage partly into the layer and to force the layer against the specimen surface, and stripping the tape after the resin has cured, thereby leaving the gage in a firmly-bonded close proximity with the specimen surface, separated therefrom only by a thinned layer of fiber-reinforced resin which also lock

Abstract: A plurality of green veneer strips are positioned side by side in close contact and provided with inclined grooves or slits on the surface. Strings are embedded in the slits together with an adhesive for connecting the green veneer strips into a veneer core block for plywood.

Abstract: The method of appliqueing sheet material, in particular, bonding a synthetic resin such as polyvinyl chloride to one or more portions of a woven fabric, comprising supporting the synthetic resin applique in compressive engagement with the sheet material in a high frequency field at a temperature such as to cause fusing and bonding of the applique to the sheet material and while fusing the synthetic resin of the applique conducting vapors generated within the sheet material by said high frequency heating away from the sheet material to allow the use of a level of power to cause the synthetic resin to penetrate into the sheet material and to prevent condensation of the vapors on the platens of the high frequency press employed to effect bonding.

Abstract: A keyboard assembly includes an insulative substrate upon which are carried a plurality of conductive paths. Respective portions of the paths are selectively bridged upon depression of a dome-shaped conductive resilient contact element. A pair of space-opposed regions of the dome's marginal portion are deformed downwardly away from its apex so as to constitute a pair of space-opposed feet. The feet have a complex shape which leads to high lifetime of the dome. Preferably, the feet rest on corresponding conductive pads, and the pad pairs for adjacent domes may be differently oriented so as better to accommodate the passage of leads between those domes. Leads on the substrate passing beneath dome edges desirably are depressed into the substrate. Overlying the domes in a completed assembly is a layer of deflectable insulating material that is adhesively affixed to the substrate and to the domes; the latter includes an aperture in registry with each dome but of a diameter smaller than the width of such dome.

Abstract: Methods for preparing laser fusion targets of the ball-and-disk type are disclosed. Such targets are suitable for irradiation with one or two laser beams to produce the requisite uniform compression of the fuel material.

Abstract: A wallcovering comprising a fabric-backed, lightweight laminate is disclosed wherein the fabric is coated with various pigmented polymer coatings to which is applied a film of metallized polyethylene terephthalate. The metallized film is then flocked. Printed designs may be applied thereto prior to the addition of the flock.

Abstract: A process for preparing a mold for relief printing masters, said mold having an adhesive silicone surface, is provided comprising depositing a particulate material in image configuration on a suitable substrate, contacting said substrate with a second member comprising a substrate with an adhesive coating of a silicone gum curable to an adhesive elastomeric condition such that the adhesive gum is in contact with the image material, separating the members whereby the silicone layer splits in the nonimaged areas and is prevented from splitting by the transfer of the particulate image material to the second member in the image areas, and curing the silicone gum on the first member to an adhesive elastomeric condition to provide a mold for printing masters.

Abstract: There is disclosed a method and apparatus for making tubular fiber reinforced thermosetting resin elements having a thermoplastic lining. The technique involves application of a thermoplastic lining layer to an axially moving mandrel surface, application of at least one layer of fiber reinforced thermosetting resin material superimposed upon the lining layer, providing for bonding of thermosetting and thermoplastic layers to each other, and heating the thermosetting resin to effect solidification during axial advancement of the superimposed layers with the moving mandrel surface. Provision is also made for applying a thermoplastic jacket layer superimposed upon the thermosetting layer.

Abstract: This invention concerns a process of manufacturing panels composed of units in, for example, ceramic assembled by a thermoplastic material.The interstitial spaces between the units are filled with granules of thermoplastic material. After heating to the highest possible temperature but just lower than the degradation temperature, the units are firmly joined to one another.Such panels can be used as decorative floor or wall-coverings.

Abstract: A method of forming hose construction utilizing an aromatic polyester thermoplastic core and reinforcing means mechanically bonded about the core with the core portion in which the reinforcing means is embedded being substantially free of stress. A sheath may be provided about the reinforcing means and may be autogenously bonded to "Hytrel", an aromatic polyester thermoplastic body of material coating the reinforcing means.

Abstract: A method of forming a panel having a surface pattern, comprising placing a superstate lamina shaped to define the desired pattern onto a substrate, the substrate and superstrate both comprising cellular thermoplastic materials which are mutually discernible, pressing a die face against the surface of the superstrate lamina and against at least that portion of the substrate adjacent the superstrate, said die face having a temperature above the softening temperature of both the superstate and substrate thermoplastic materials, to thereby collapse the cellular structure of the superstrate and the substrate where contacted by the die and form an integral non-cellular surface layer containing the pattern as an integral part thereof, cooling the die face to harden said layer, and removing the die.

Abstract: A preconsolidated tape of continuous, high strength filaments in a metal matrix is coated with a layer of adhesive polymer and cut into shaped plies. The coated plies are stacked in a mold and resin bonded together by the application of heat and pressure. Many of the desirable physical properties of a diffusion bonded metal matrix article are also found in the resin bonded metal matrix article of the subject invention. Also, the use of preconsolidated adhesive coated plies eliminates the need for high diffusion bonding pressures and temperatures, thereby cutting the time involved for the bonding and molding operation by a factor of 8 in some instances.

Abstract: A 3-D viewer and the method and apparatus for the fabrication thereof, said viewer including a pair of plastic polarized lenses each ultrasonically cut out from a sheet of polarized material simultaneously ultrasonically sealed about a lens opening in a lens receiving frame.

Abstract: An anchor for securement to a base having a transitory fluent stage includes a sheetlike segment with an interior zone having a depressed loop. The loop is pressed into a fluent area of the base with the fluent material flowing completely around the loop. Upon solidification of the base, a secure interlock is achieved. A typical anchor may be a pin or other attachment finding for an article of decorative or functional ornamentation such as an identification badge, jewelry, or the like, with the article of ornamentation being formed of a thermoplastic.

Abstract: An improved hose construction and method of forming the same wherein a reinforcement layer is bonded to a thermoplastic core by a solventless bonding layer defining an inner thermal weld portion substantially autogenous with the outer surface portion of the core tube and an outer portion mechanically interlocked with the confronting inner portion of the reinforcement layer.The bonding layer is thermally formed to be autogenous with the outer surface portion of the core tube and may include an added layer of thermoplastic material which is concurrently fused to define the fused bonding layer. The added layer is compatible with the core tube outer surface portion and is preferably formed of similar thermoplastic material. The reinforcement layer is wrapped about the core tube under tension to provide an embedment thereof in the bonding layer to effect a positive mechanical interlocking therebetween.

Abstract: A sheet of magnetic material is placed over a surface of a malleable carrier and stuck with a multi-projectioned punch. Each projection of the punch removes a wafer of the magnetic material from the sheet of magnetic material, and embeds the wafer into the carrier to form a pattern of magnetic material wafers in the surface of the carrier. The carrier is then positioned, wafer bearing side down, over an adhesive coated surface of a substrate, and a surface of the carrier, opposite from the wafer bearing surface, is struck with a multiprojectioned punch to force with each projection an individual one of the wafers out of the surface of the carrier and into the adhesive on the substrate. The malleable carrier is then peeled from the adhesive coated surface of the substrate and from the wafers secured thereto, to leave on the surface of the substrate the pattern of magnetic material wafers.

Abstract: A method of making an identification card which comprises making any required characters, designs and/or embossings on the base material of the card, further providing a colored layer on the bass material of the card and then engraving the colored layer and base to varying depths in the form of fine lines and and points so that, by regulating the ratio of the surface areas of the engraved part and unengraved part, the differences in the color thickness and luster may be expressed to form an engraved image by which the user can be identified and which image has no projections thereon.