Abstract: The present invention is to provide a chip device bonding machine in which bubbles can be effectively prevented from remaining with the adhesive. A flexible board is moved on a base at every unit by the rotation of reels. In accordance with the movement of the flexible board, a new portion of a tape made of a film, a paper or the like is moved above the base. The tape is located between the flexible board and the base. A thermosetting adhesive is deposited on the flexible board on the base by an adhesive nozzle. An IC chip is placed on the flexible board on the base by an IC chip supply arm. A pressing arm including a heater presses and heats the IC chip toward the base side to interconnect the IC chip to the flexible hoard. When the IC chip is heated and pressed by the pressing arm, the tape is concaved at its portions corresponding to bumps and consequently the flexible board is deformed, whereby bubbles produced within the adhesive are pushed out to the outside.

Abstract: Pneumatic tires are rendered less susceptible to blow or blister defects by providing, in at least one cord reinforcement ply of a tire, a plurality of gas absorbing cords with the reinforcement cords and gas absorbing cords lying in the same general plane and with the gas absorbing cords consisting of staple hollow filaments. The gas absorbing cords may be used as fill yarn in weaving fabric employing parallel reinforcement cords.

Abstract: A catheter shaft and catheter are formed by spirally rolling a thin polymeric film about a mandrel into a tubular form and fixing the spirally wound film in the tubular form. Additional elements and films may be incorporated into the spirally wound tube to provide a catheter having varied characteristics and functions.

Abstract: A method is provided for fabricating a fiber reinforced metal tube. A first, thin walled metal tube, such as a copper tube, is wrapped with layers of reinforcing fibers, such as copper coated graphite fibers. Layers of fibers aligned in the longitudinal direction of the tube, for example, may be alternated with layers of fibers aligned in the circumferential direction. The fiber wrapped tube is inserted into a second, thick walled metal tube having an inside diameter slightly larger than the outside diameter of the fiber wrapped tube. A vacuum may be formed in the fiber wrapped region between the two metal tubes. The fiber wrapped inner tube is then expanded radially against the inside of the thick walled tube with hot isostatic pressure to consolidate the reinforcing fibers into the metal, thereby forming the fiber reinforced metal tube.

Abstract: A bag closing machine has a pair of endless belts mounted in a housing and having adjacent runs extending along a passage in the housing. The belts are driven to cause bags to be conveyed successively between the runs along the passage. A heating station adjacent the passage is operable to heat sealing areas of the bags to activate heat sealable material in a bag closing manner. The heating station has at least one pair of nozzles, one nozzle of each pair being on one side of the passage and the other nozzle of each pair being on the opposite side of the passage, the nozzles being directed towards the sealing area of a bag passing the heating station. Hot air is supplied to the nozzles to cause hot air to be emitted from the nozzles and impinge on the sealing area of a bag to activate the heat sealable material in a bag closing manner. When no bag is passing the heating station, hot air from the nozzles is removed to a location remote from the drive belts.

Abstract: A method of lining of metallic pipe is disclosed. The method comprises forming a plurality of concentric flexible tubes of a thermoplastic polymer, such tubes being capable of being bonded together under the influence of heat and pressure. The plurality of concentric tubes is inserted into a section of metallic pipe that is to be lined. The tubes are then heated, especially under pressure e.g. using steam, to cause the tubes to bond together to form a single tube lining the pipe. Adhesives may be used to facilitate bonding. The method is particularly useful in the lining of metallic pipe that has bends, loops or the like.

Abstract: An air venting belt for use between an outer surface of a tire and an inner surface of an envelope when a retread tire is vulcanized, comprising a base cloth made of woven cloth which is expansible at least in the longitudinal direction of the belt.

Abstract: A hard enclosing container which is transparent at least at its front wall, has a metallic plate bearing indicia contained therein. An enclosing layer of a viscous adhesive agent is stuck to all surfaces of the plate and fills the container. The layer includes at least a front covering layer which is transparent. To form the article, the plate is adhered to a bottom wall of the container by a lower covering layer of the adhesive agent or by a pressure sensitive adhesive double coated sheet. Viscous adhesive agent is charged to the container. The container is then sealed by a transparent hard top cover. Alternatively, the container with the plate stuck therein can be closed by the transparent hard top cover and the adhesive agent is then charged into the sealed container expelling any air trapped therein. The sealed container can be evacuated prior to charging.

Abstract: This invention proposes methods of effectively forming a metal-backed layer and an anode using a metal film transferring sheet in which micro-holes are formed. that is, the metal film transferring sheet is structured by forming a metal film on a mold-releasable, highly characteristic sheet. Then, the metal film having micro-holes of the metal film transferring sheet is transferred onto a phosphor screen. Or, on the metal film of the above-mentioned metal film transferring sheet, is formed a phosphor screen and the metal film, the phosphor screen, etc. are all transferred onto a face plate form an anode of a cathode-ray tube. Then the methods proposed by this invention are applied for making phosphor products of, for example, a cathode-ray tube or a plasma display. According to these methods, there is no need to use a large-scaled manufacturing facility and high quality, low cost products can be obtainable.

Abstract: An apparatus and method for improved wafer bonding by scrubbing, spin drying, aligning, and pressing the polished wafers together. The first wafer (13) is mounted on a flat wafer chuck (11) and a second wafer (14) is mounted on a convex pressure gradient chuck (10). Wafers are scrubbed until a polished contamination free surface is obtained and pressed together. The convex pressure gradient chuck exerts a higher pressure at the center of the wafer than at the periphery of the wafer.

Abstract: Respectively disclosed is a method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprieses (A) adhering a plastic film having a releasable pressure-sensitive adhesive layer to a body surface of the coating finished automobile and/or (B) heating a heat-shrinkable plastic film to be shrinked so as to fit to an intended shape and to cover the body surface of the coating finished automobile; which method comprises applying to the body surface of the coating finished automobile a plastic film prepared by intermittently coating a releasable pressure-sensitive adhesive layer to cover the body of the coating finished automobile; which method comprises covering the body surface of the coating finished automobile with a plastic film having a rough surface on a side contacting with a coating surface, and fixing a terminal of the film and heating, when needed, to cover in conformity with a body shape; and which method comprises subjecting a plastic film to vacuum for

Abstract: A thin film bonding method and apparatus having structure for removing wetting agents applied to a thin film and base plate that are to be bonded by pressure and heat. A spray or rollers apply the wetting agent prior to the initial bonding of a leading edge of the thin film to a leading edge of the base plate. A pressure roller applies heat and pressure to the film and base plate, bonding them together as the roller rotates and drives the plate toward a cleaning position. Suction and agent removal rollers are used to remove the residual excess agent from the bonded film and the pressure roller. The removal rollers are joined together by a link mechanism that has a spring bias and is operation by a gear mechanism that provides a wiping action.

Abstract: A method for producing a self-regulating heating cable is provided. A first conductive constituent is cryogenically cooled to a temperature at least as low as its glass transition temperature, and ground into first conductive pellets. A second conductive constituent is cryogenically cooled to a temperature at least as low as its glass transition temperature and ground into second conductive pellets. The first and second conductive pellets are combined to obtain a mixture which is extruded over a pair of conductive wires to form a cable.

Abstract: A spring consisting of a rope having a plurality of strands each containing a plurality of monofilaments, and a cured binder which has saturated the rope under pressure to cause it to be self-sustaining in spring form. A method of fabricating a spring including the steps of providing a conventional rope composed of a plurality of monofilaments, saturating the rope under pressure with a binder to form a combined rope and binder, forming the combined rope and binder into a predetermined spring shape, and curing the binder to cause the spring to be self-sustaining in the formed predetermined spring shape. A self-damping spring formed by the foregoing method wherein the rope is of the twisted type, and the amount of damping being dependent on the angularity of the twisting. A spring consisting of a first portion of a rope impregnated with binder to hold the spring in a self-sustaining shape and an untreated second rope portion formed integrally with the first portion.

Abstract: A split tire mold having a tread ring in which provision is made for venting air circumferentially across the inner surface of the tread ring so that the air escapes from the parting line of the mold halves, dispenses with widely used, conventional, radially protruding vent stubs. The air is vented through "butterfly-shaped" or "double-wedge-shaped" arch-vents which provide passage for trapped air above each tread block of the tread as it is moved against the inner surface of the tread ring. The shape of the arch-vent passages and the angulation of the wedges is critical to the effectiveness of the arch-vent which forms an arch-vent bridge of cured rubber in a cured tire. The configuration of the bridge allows as cured tire to be easily removed from the mold cavity without leaving a broken-off piece of the rubber bridge to plug the arch-vents. This arch-vent design leaves unobtrusive flat-sided, narrow wedge-shaped pieces of rubber as the arch-vent stubs, tapered in two directions.

Abstract: An improvement is provided in a jacket used in the formation/curing of transmission belts. Such a jacket typically has a substantially cylindrical surface which is engaged with assembled belt components during a curing process therefor. The improvement resides in the provision of vent structure for allowing air to escape from between the cylindrical surface on the belt forming jacket and assembled belt components during a curing process.

Abstract: A multilayer substrate provides predetermined connections to and between a plurality of integrated circuit chips mounted thereon. A plurality of layers mounted on a surface of a substrate has a plurality of layers comprising a plurality of dielectric layers, a first plurality of metallic layers, and a second plurality of metallic layers. The first plurality of metallic layers has a predetermined pattern for forming the predetermined connections, these being the x-lines and y-lines. Each of the second plurality of metallic layers provides a predetermined voltage level to the integrated circuit chips, and each of the second metallic layers has a screen-like structure. Each of the first and second metallic layers is insulated from the other metallic layers by one of the dielectric layers, except for desired interconnections between the x-lines y-lines, and power layer (or power plane).

Abstract: Method for press vulcanizing, not only of dry, wholly or partly vulcanizable articles (1), such as auto rubber mats, piled rubber mats, etc., of a humidity of 0-3 weight percent but also of such articles (1) of a humidity of 3-5 weight percent or more, in the press zone of a vulcanizing press (P) having a shiftable part for closing and opening of the press (P) capable of applying a uniform surface pressure against any article (1) fed into the press. In that at least from the beginning of the vulcanizing operation to the end of it, a multitude of flow routes is established between the press shiftable part and each article (1) for vapors and gases released from each article (1), and a multitude of flow routes out from the press zone from where said vapors and gases may thus escape at least along part of the border of said press zone border, a method is brought about in which no vulcanizing heat is lost for heating of confined vapors and gases at high pressures.

Abstract: A polyimide adhesive is applied in liquid form between surfaces of a pressure transducer glass surface and a glass pedestal tube and maintained at room temperature, or below, for a period of 10-15 hours to allow the adhesive solvent to evaporate. After such time, the temperature of the transducer and attached pedestal tube is elevated over a period of time to about 320.degree. C. to completely imidize the polyimide adhesive. The pedestal is then fixed within an opening in a base portion of a case, and electrical conductors are connected between pins in the case and transducer contacts. A cover is hermetically sealed to the case to thereby encase the transducer.

Abstract: A liquid ejection recording head comprises a supporting substrate having energy generating elements thereon, a lid member and a wall portion between the supporting substrate and the lid member. The wall portion includes a surrounding wall that forms a liquid chamber between the substrate and the lid member and an enclosing wall disposed around the surrounding wall that provides a gap between the surrounding and enclosing walls, which gap is in communication with the exterior of the head through an opening in the enclosing wall. The wall portion also includes a plurality of substantially similar, parallel wall members, a first plurality of which forms an array of flow paths from the liquid chamber to orifices for discharging liquid when the energy generating elements are actuated and a second plurality of which forms open channels not in communication with the liquid chamber but in communication with the exterior of the recording head.

Abstract: A sealing process for producing clean, contamination-free seals. The process includes the step of incorporating a small amount of polar liquid within the material to be sealed between heat-sealable layers. An alternating electromagnetic energy field, such as that produced by a dielectric heating device, is applied to the seal area. The energy vaporizes the polar liquid, thereby cleaning the seal area. Subsequently, the energy causes the resinous layers to seal together, sealing the material within the package. A preferred composition for sealing within the resinous package is also disclosed. The material includes a polar liquid, a surfactant, wax, oil and microbeads. The material is especially suited for producing padding devices.

Abstract: Disclosed is a joined ceramic-metal composite having a copper sheet directly joined to a ceramic substrate and a method for the production thereof. This composite is characterized by having a plurality of parallel grooves formed on the surface of the copper sheet to be joined to the ceramic substrate. The products of this invention show substantially none of the defects such as blisters inflicated on the copper sheet during the course of union by heating and, therefore, serve advantageously as ceramic circuit substrates for use in transistor modules, for example.

Abstract: In the application of dry film solder mask material to a board, a process and applicator for the implementation thereof features automatic feed of the board, initiation of leading and trailing edge tacking, by heated or unheated tacking rolls, of the film to the board by utilization of the board to apply a force tangential to the tacking rolls, and logic circuitry to regulate the leading and trailing edge tacking by closing the tacking rolls to apply roll pressure during each of the leading and trailing edge tacks, and after tacking of the film to the leading edge of the board, opening of the rolls to allow the film to be applied without pressure, with the rolls being closed again to tack the film to the trailing edge of the board.

Abstract: A process of bonding two bodies of rubber by vulcanization of a connecting layer of vulcanizable rubber provides essentially a new manner of organizing the drainage of gaseous inclusions imprisoned between the bodies and/or resulting from the subsequent vulcanization reaction and of collecting these gases; the gaseous inclusions travel towards at least one conduit which passes through at least one of the two bodies, or else towards dead-end holes provided in one of the faces intended to be bonded.

Abstract: A method is disclosed of obtaining a void free interface between a photosensitive dry film and substrate by applying uniform fluid pressure after vacuum lamination.

Abstract: An improved method and apparatus for the manufacturing of advanced composite tubes involving the steps of wrapping various layers, including a composite layup, around an elongated mandrel, placing the mandrel with layers applied in a tubular female mold, expanding the diameter of the mandrel, thus forcing the various layers to compress against the surface of the female mold.In order to remove excess resin from the layup this method also incorporates a resin absorbing layer which is wrapped around the mandrel prior to the composite layup. In addition, all the layers necessary to produce the tube are wrapped around the mandrel with a wrapping apparatus in which the various layers are first placed flat on a sheet. The sheet is then pulled around the mandrel, mechanically transferring the various layers to the perimeter of the mandrel. This method results in the formation of high quality composite tubes with smooth external surface finishes.

Abstract: A flexible and rugged laminar heater in which a non-woven cloth layer serves to reduce air void formation during lmaination. The heater of the invention comprises a laminar conductive polymer heating element, at least two electrodes, at least one polymeric insulating layer and at least one nonwoven cloth layer. Suitable nonwoven cloths may comprise nylon or glass. In addition to eliminating air voids, they are useful in minimizing distortion of the laminate.

Abstract: A reinforced composite gasketing material characterized by high strength and dimensional stability, excellent recovery and superior creep relaxation resistance properties and a process for producing such a gasketing material are provided. The composite gasketing material of the present invention is a multiple layer laminate of filled polytetrafluoroethylene (PTFE) and at least one ply of perforated stainless steel. The process of the present invention includes the steps of pressure sintering alternately layered sheets of a PTFE/filler blend and stainless steel by the application of a sequence of intervals of pressures and temperatures selected primarily according to the thickness desired in the finished material and then rapidly cooling the sintered composite under pressure. The resulting gasketing material has the metal layer completely encapsulated by and bonded to the PTFE/filler material.

Abstract: Method for forming a laminate and a product formed thereof. A thin layer of oil is applied to a facing surface of at least one of a plurality of adjacent laminations. The laminations are passed between a pair of rollers which apply sufficient pressure to remove excess oil between the facing surfaces. The air between the facing surfaces is displaced and the remaining oil forms a seal to prevent reentry of the air. The laminate is tightly held together to permit handling or fabrication without delamination.

Abstract: A polyurethane filmed glass material for use as monolithic insulated glass or laminated glass in spandrel applications is provided. Polyurethane sheet which has been ultraviolet light stabilized is pigmented, coated or otherwise colored to produce a coloring which is predictable and reproducible. A coupling agent is employed and the polyurethane adheres directly to a glass sheet without glues or adhesives.The manufacture of the glass material includes laying a sheet of colored polyurethane sheet material on a sheet of glass which has been prepared with a coupling agent. Outside surfaces of the polyurethane are coated with a release material. The glass sheet and the prepared polyurethane sheet are then loaded into a vacuum bag which in turn is then loaded into an autoclave. The bag is subjected to a vacuum while the autoclave vessel is pressurized.

Abstract: A method of manufacturing semiconductors formed of bonded wafers. The method includes the use of a heat sink. The heat sink induces a temperature gradient to occur on a single area at the interface of the wafers with the gradient moving rapidly across the remaining surface. As a result of the temperature front, the voids or uncontacted areas between the wafers which result in a typical bonding process are substantially reduced, thereby providing a stronger and more effective bond.

Abstract: A vaccum ring is coupled to a vacuum source and utilized to de-air a laminated glass assembly while it is positioned within a pressurized and heated autoclave unit. The vacuum ring has a channel for receiving the edge of the glass assembly and is fabricated to minimize the extrusion of the laminating material during the autoclave operation. The walls of the channel each have a single longitudinally extending groove approximately centered between the edges of the wall, and the floor of the channel includes a single longitudinally extending groove positioned to be adjacent the edge of a laceration shield layer of the glass assembly. All three grooves interconnect with the vacuum source. The channel generally conforms to the outer edge of the glass assembly with or without applied vacuum of pressure, and the provision of grooved walls greatly enhances the sealing of the ring to the glass.

Abstract: A vacuum ring is coupled to a vacuum source and utilized to de-air a laminated, electrically heated glass assembly having a cut-out portion adjacent the peripheral marginal edge of the laminae while the assembly is positioned within a pressurized and heated autoclave unit. The vacuum ring has a channel for receiving the edge of the glass assembly and the walls of the channel each have a single longitudinally extending groove approximately intermediate the edges of the wall. At least one of the walls is provided with a lip like extension disposed to cover the cut-out portion of the one of the laminae. The grooves interconnect with a vacuum source. The channel generally conforms to the outer edge of the glass assembly with or without applied vacuum or pressure, and the provision of grooved walls tends to enhance the sealing of the ring to the glass.

Abstract: A method for lining a high pressure pipeline with a tubular plastic liner. After depressurizing, purging and cleaning the pipeline is broken into discrete sections each of which is to receive a liner segment. The sections are reamed to remove obstructions which might damage the liner and a close-fitting liner segment is drawn into each section. Each liner segment is fixed at opposed ends of respective pipeline sections to prevent longitudinal movement of the segments. Bleeder holes are provided through the pipeline walls at opposed ends of each pipeline section. After the pipeline sections are reconnected to reform the pipeline, a relatively warm, pressurized fluid is pumped through the pipeline to radially expand each liner segment against the inner walls of the pipeline, thus evacuating the spaces between liner segments and pipeline sections by forcing air, water and other impurities through the bleeder holes.

Abstract: In a method of bonding a mirror to a rigid backing by means of a solvent-based adhesive, the solvent vapor from the bond line is extracted by interposing a porous layer between the mirror and the backing and extracting the solvent vapor through the porous layer by suction.Apparatus for this purpose includes first and second work stations 2,4 for supporting a rigid sheet of material 8, and means 39,40,44,46,56 for advancing the sheet from one station to the other through a third station equipped with means 34 for dispensing liquid adhesive on the sheet as it passes through. The support surface 16 of the second station is gas-permeable 18 and this station also includes a flexible and substantially gas-impermeable lid 22 adapted to close over a sheet lying on the support surface and means 21 for sucking gas through the support surface from the space between the lid and the support surface whereby to evacuate the space.

Abstract: A power component such as a power transistor is mounted on an insulating substrate of, e.g., beryllia by using a thick film deposition technique. A first layer (2) is deposited and a second layer (3) is deposited over the first layer to produce a regular series of troughs and lands, in the preferred embodiment troughs and ridges, whereby voiding in the solder bond is minimized if not eliminated to thus maintain a good thermal conductivity between the component and the substrate.

Abstract: A vacuum ring is coupled to a vacuum source and utilized to de-air a laminated glass assembly while it is positioned within a pressurized and heated autoclave unit. The vacuum ring has a channel for receiving the edge of the glass assembly and is fabricated to minimize the extrusion of the laminating material during the autoclave operation. The walls of the channel each have a single longitudinally extending groove approximately centered between the edges of the wall, and the floor of the channel includes a single longitudinally extending groove positioned to be adjacent the edge of a laceration shield layer of the glass assembly. All three grooves interconnect with the vacuum source. The channel generally conforms to the outer edge of the glass assembly with or without applied vacuum or pressure, and the provision of grooved walls greatly enhances the sealing of the ring to the glass.

Abstract: A method of laminating a porous overlay material to a perforated plate with a dry film adhesive which does not block perforations or pores in the two components. A lay-up is preferably prepared by assembling in order on a vacuum platen a porous peel ply sheet, a sheet of dry film adhesive, a perforated plate, a sheet of microporous material to be bonded to the perforated plate and an air permeable sheet. A vacuum is drawn through holes in the vacuum platen contiguous to the bottom surface of the porous peel ply sheet while the assembly is heated to the softening temperature of the adhesive film. The vacuum is directly applied through the perforation, drawing the film down through the perforations and into contact with the peel ply sheet. As heating continues the film softens sufficiently to adhesively bond the microporous material to the perforated sheet.

Abstract: The process for making a dimensionally stable, embossed, ornamented surface covering suitable for use as a floor or wall tile, involving, inter alia, laminating and embossing a resinous thermoplastic top layer having a plurality of openings extending through its thickness to allow the escape of air and extending to a base material or substrate of pre-formed, low-density, reinforced, porous thermoplastic material. The base material may include hollow non-thermoplastic particles. The composite structure is subjected to heat and pressure in a flatbed press having a cooled embossing plate and a cooled back-up plate, to emboss the structure without deformation, fuse the resins and render the top layer substantially impermeable.

Abstract: A method of resin bonding opposing surfaces of a pair of members for providing a joint having substantially resin free surfaces adjacent the joint. The adjacent surfaces and the joint are covered in intimate contact with a thin, perforated, flexible, and nonadherent film for perforating resin extruded from the joint during application of bonding pressure. The nonadherent film is covered with a sheet of flexible absorbent material for absorbing the resin perforated through perforations along the film. Bonding pressure is applied to the joint to extrude the resin from the joint. The nonadherent film and the absorbent sheet is then removed from the surfaces adjacent to the joint to facilitate secondary bonding to the adjacent surfaces.

Abstract: A unique air vent is provided for use with heat-recoverable closures when installed on pressurized cables. Typically, when a heat-recoverable closure is used to repair a hole or opening in the jacket of a pressurized cable the cable must be depressurized during installation of the closure to ensure formation of a pressure and watertight seal. The air vent assembly permits installation of a heat-recoverable closure without the need for depressurizing the cable. After installation, the air vent can be used as an access point to the pressurized air within the cable.

Abstract: A method of molding and the article so molded wherein a non-woven sheet of continuous polymer filaments, preferably having their cross points bonded preferably without or with a filament adhesive, is used as the mold release agent and becomes part of the molded article.

Abstract: The present process allows recycling used tires which are at present considered to be no longer suitable for restructuring according to known processes.According to the invention a preliminary control is carried out, also by scanning by means of a laser, to assess the seriousness of the internal ruptures and deformations due to impacts or other causes, discarding tires which are too damaged, while the thread and the metallic belts of the remaining tires which can be used are removed therefrom by scraping, the entire tire assembly being reconstructed, by vulcanizing before mounting the tread, and checking again with the laser to detect bubbles or other defects correcting the defects, obtaining a perfect assembly (FIG. 25) on which the tread which is vulcanized again, is lastly mounted.

Abstract: A panel of microporous thermal insulation which comprises an envelope of glass fibre cloth which surrounds and is bonded to a block of microporous thermal insulation is manufactured by heating the glass fibre cloth so as to drive off organic material, applying a silane in an acidic solution to the cloth, drying the cloth in order to produce cross-linking of the silane so as to cause the cloth to stiffen, and applying to the cloth an aqueous suspension of particulate silica, an aqueous solution of sodium silicate or potassium silicate, or a cellulose solution. Microporous thermal insulation is introduced into a bag mode from the cloth and the bag is then compressed to consolidate the insulating material and to produce a bond between the insulating material and the bag.

Abstract: The invention relates to a method for bonding a mirror to a substantially rigid backing board using a solvent-based adhesive with solvent vapors being removed through a porous layer between the mirror and the backing. Apparatus for carrying out the bonding is provided. The mirror laminate is also claimed.

Abstract: A continuous vulcanized assembly process for producing an anti-fouling material comprises cleaning the surface of a sheet of copper alloy anti-fouling material by shotblasting, use of a rotary abrasive member or by a chemical treatment. A layer of elastomeric material is extruded onto the metallic material and the elastomeric material is then cured at an elevated temperature using a rotary press. The material thus produced can be stored on reels for subsequent attachmnent to appropriate structures.

Abstract: A membrane keyboard construction and method of making the same are provided, the membrane keyboard construction comprising two circuit layers, a spacer disposed and secured between the circuit layers and having an opening passing therethrough to permit the circuit layers to be pressed together in the opening and thereby provide a switching function, a face plate, and an adhesive layer disposed between the face plate and one of the circuit layers and securing the face plate to the one circuit layer, the adhesive layer having a passage therein and leading from an area thereof that is aligned in superimposed relation with the opening to the exterior of the construction to vent that area thereof. The area is isolated from the opening by the one circuit layer and is vented by the passage to tend to enhance tactile feel and avoid false switch closure of the opening by tending to prevent entrapment of air bubbles in the area.

Abstract: A diaphragm (10) suitable for extreme temperature usage, such as encountered in critical aerospace applications, is fabricated by a unique method, and of a unique combination of materials, which include multi-layered lay-ups of diaphragm materials (20a, 22, 20b) sandwiched between layers of bleeder fabric (29, 36), which, after being formed in the desired shape on a mold (26), are vacuum sealed (38) and then cured under pressure, in a heated autoclave, to produce a bond capable of withstanding extreme temperatures.

Abstract: This invention relates to a belt splice and a method of splicing a belt. The belt splice includes in its most basic form a single ply or wire fabric although when the belt is to be used in heavier conveyor systems, a multiple layer fabric weave may be utilized. The metallic fabric weave is inserted into openings sliced along the longitudinal axis of the ends of the belt which are to be spliced together with the metallic fabric weave being coated with cement prior to such insertion if necessary. The splice further includes filling material which may, if desired, be rubber which is inserted in the area of the splice prior to the vulcanization procedure. The method of splicing the belt includes the steps inferred by the above explanation of the belt splice and other method steps including the particular preferred angle at which the belt ends are cut and the particulars of the vulcanization process.

Abstract: A method of manufacturing a gas permeable packaging material, which comprises the steps of forming a laminate composed of an outer plastic film and a gas permeable inner sheet with a first heat-sealable layer interposed therebetween, perforating the laminate with a number of micro-pores, which extend from the outer film side to at least the inner sheet, heat-sealing a second heat-sealable film with or without a number of small-pores to the inner sheet, and, if the second heat-sealable film is of no porous, forming a number of small-pores in the second heat-sealable film, a pore ratio of the second heat-sealable film being greater than that of the outer film.