Abstract: A protective acoustic cover assembly including a metal foil with perforations, and a treatment on one or more surfaces of said metal foil. The treatment is a hydrophobic or oleophobic treatment, or both. The protective acoustic cover assembly has an average specific acoustic resistance of less than about 11 Rayls MKS from 250-300 Hz, an average specific acoustic reactance magnitude of less than about 1 Rayls MKS from 250-300 Hz, and an instantaneous water entry pressure value of greater than about 11 cm. The perforations of the metal foil preferably have an average maximum pore size of less than about 150 micrometers. The protective acoustic cover assembly further includes an adhesive mounting system, and the preferred metal foil is nickel.

Abstract: Composite film articles and assemblies that include at least one layer of expanded fluoropolymer bonded to at least one thermoplastic sheet are fabricated using a method which can adjust the gas and liquid permeability of the composite film assemblies. These composite film articles and assemblies optionally have electroactive properties and a thin porous metallic overlayer that can serve as a current collector, and can be used in electrochemical devices such as air depolarized cells.

Abstract: An ionomer and a process for forming the ionomer such that the ionomer has (1) low equivalent weight; below 950, preferably between 625 and 850, and most preferably between about 700 and about 800; and (2) high conductivity, (greater than 0.15 S/cm). In an alternative embodiment, the ionomer has (1) low equivalent weight; below 950, preferably between 625 and 850, and most preferably between about 700 and about 800; and (2) acceptably low hydration, (less than about 75 weight percent). These ionomers are adapted to be processed into thin films that have acceptable physical stability. They are thus extremely well-suited for low humidity or high temperature fuel cell applications.

Abstract: A dielectric film for a printed wiring board that has excellent heat resistance, moisture resistance, insulation properties, adhesiveness, ease of handling, ease of processing, and the like, and possesses low elasticity and high elongation as stress relief functions. The dielectric film has drawn porous polytetrafluoroethylene used as the base material; this is impregnated with an adhesive or fusible resin; the post-solidification tensile modulus of elasticity is 0.1 to 1.8 GPa; and the tensile elongation at break (at 25° C.) is at least 4.0%. A semiconductor device, comprising a multilayer printed board having a plurality of circuit layers, and a semiconductor element mounted on the multilayer printed board, this semiconductor device having an insulating/adhesive layer with a stress relief function between the outermost circuit layer of the multilayer board on the side of the semiconductor element, and the circuit layer adjacent thereto; and the insulating/adhesive layer is formed from the dielectric film.

Abstract: An article having (a) a layer of fabric having a first surface and a second surface made of polytetrafluoroethylene fibers; and (b) a first composite comprising (i) a porous PTFE film having interconnected passages and pathways and (ii) a fluoropolymer adhesive, wherein said fluoropolymer adhesive is at least partially contained in said passages and pathways of said PTFE film, said first composite disposed adjacent to said first surface of said fabric,wherein the article passes a Newark Flex test after 10,000 cycles. In another embodiment, the invention includes a second composite comprising (i) a porous PTFE film having interconnected passages and pathways and (ii) a fluoropolymer adhesive, wherein said fluoropolymer adhesive is at least partially contained in said passages and pathways of said PTFE film, said second composite disposed adjacent to said second surface of said fabric. The article of the present invention is preferably waterproof, fire retardant, and flexible.

Abstract: A substrate having at least one electrical component disposed thereon; a plurality of discrete electrically conductive fastening units disposed in a pattern on the substrate surrounding the at least one electrical component; a board-level electromagnetic interference (EMI) shield comprising an electrically conductive layer; a plurality of apertures formed in the board-level EMI shield such that the apertures correspond to the pattern of the electrically conductive fastening units; with at least one thermally conductive interface (TCI) material disposed over the at least one electrical component; and wherein the electrically conductive layer of the board-level EMI shield is in electrical contact with at least one electrically conductive fastening unit.

Abstract: A membrane-electrode-assembly with a solid polymer electrolyte, wherein a laminated structure is obtained by a process in which a membrane/catalyst layer conjugate produced by bonding a first catalyst layer containing a catalyst and an ion-conducting resin to a solid polymer electrolyte membrane, and a gas diffusion layer/catalyst layer conjugate produced by forming a second catalyst layer containing a catalyst and an ion-conducting resin on one side of a gas diffusion layer consisting of a gas-permeable electroconductive sheet material are laminated at least on the anode or cathode side such that the first catalyst layer and second catalyst layer face each other.

Abstract: A cable assembly is disclosed which has a cable extending along the cable assembly, and a strength member also extending along the cable assembly. At least one independent anchoring element is attached to one of the member ends of the strength member and has an opening provided therein. The strength member passes through the opening of the independent anchoring element and thus holds the independent anchoring element in place on a casing.

Abstract: An integral composite membrane comprised of an expanded polytetrafluoroethylene having a morphological structure comprising a microstructure of very highly elongated nodes interconnected by fibrils is imbibed with ionomer. This composite membrane shows a surprising increase in hardness and thereby reduces electrical shorting and improves fuel cell performance and durabiity.

Abstract: An interconnection system comprising two coaxial cables (20, 20′) connected together by matable connector halves (30a, 30b, 40a, 40b) is disclosed. A first half of the matable connector halves (30a, 30b, 40a, 40b) is a male connector half formed of a first insulating housing (40) in which is disposed at least one conductive pin (50) which is electrically connected to the center conductor (100) of one of the two coaxial cables (20, 20′). The conductive pin (50) is at least partly captivated by a first dielectric bead (60) within a first connector shield (55). The first connector shield (55) is electrically connected with the cable outer shield (110) of the same one of the two coaxial cables (20).

Abstract: A multilayer, unitary gasket including at least one inner layer of expanded PTFE disposed between a first substantially air impermeable outer layer and a second substantially air impermeable outer layer, and a substantially air impermeable region bridging the first and second substantially air impermeable layers. The inventive gasket forms a substantially air impermeable seal when compressed at low stress.

Abstract: A cable comprising a stress-bearing matrix extending substantially through the length of the cable; and a plurality of conducting elements extending substantially through the length of the cable, the plurality of said conducting elements being located within and spaced from one another by said stress-bearing matrix, wherein at least one of the plurality of conducting elements is in intimate contact with a low friction liner disposed about the at least one of the plurality of conducting elements and the at least one of the conducting elements is longitudinally movable relative to the stress-bearing matrix.

Abstract: A new class of solid solvents selected from adipamides, bisacetamides, biscarbamates, and dibenzamides has been found effective to reduce the melt viscosity of certain block copolymers while not substantially adversely affecting the mechanical properties of the block copolymer when both block copolymer and solid solvent are below their melt temperature. The block copolymers can be polyether-polyurethane block copolymers, polyester-polyurethane block copolymers, polyester-polyether block copolymers, polyamide polyether, or polyamide polyester. The combination is especially useful as an adhesive, as the adhesive component for fabric laminates or as the adhesive for seam sealing tapes.

Abstract: An EMI shielded apparatus having a substrate with at least one electrical component disposed on it; a plurality of discrete electrically conductive fastening units disposed in a pattern on the substrate surrounding the at least one electrical component; a shield comprising a dielectric material layer having an inner surface and an outer surface and an electrically conductive layer over at least one of the inner and outer surface; a plurality of apertures formed in the shield such that the apertures correspond to the pattern of the electrically conductive fastening units; wherein at least one of the apertures has a contact region and wherein both the dielectric material layer and the electrically conductive layer of the shield at the contact region of the aperture are deflectable to the extent necessary to allow the contact region to engage and retain the electrically conductive fastening unit; and wherein the electrically conductive layer of the shield at the contact region is in electrical contact with the e

Abstract: A plug for batteries, especially for lead storage batteries is described in which gas exchange occurs through a liquid-impermeable and gas-permeable element (2) and in which an aerosol separator (3) is arranged between the element (2) and the gas space above the electrolyte. The aerosol separator according to the invention can be a centrifugal separator, a cascade separator, or an inertial separator or consist of a combination of at least two of the aforementioned.

Abstract: A plurality of polarizable electrodes, a laminate of a collector layer, a polarizable electrode layer of a porous sheet, and a carbon-based conductive material interposed therebetween, are disposed in a row arrangement, interposing separators between the polarizable electrodes, and an electrolyte is packed between said polarizable electrodes and said separators; the carbon-based conductive material penetrating into the voids in the polarizable electrode layers. A process is provided whereby the polarizable electrode is manufactured by applying a conductive material solution to the collector and/or polarizable electrode sheet surface, superposing the two, and then evaporating out the dispersion medium of the conductive material solution.

Abstract: AN EMI/RFI gasket with an open-celled foam substrate having a metal coating on its skeletal structure that is substantially deformable and recoverable. The gasket provides shielding effectiveness of greater than 40 dB.

Abstract: The invention relates to a fibre optic routing board for routing a plurality of fibre optic cables. The fibre optic routing board is provided with one or more optical conductors disposed between a first lower laminate layer and a first upper laminate layer, the one or more optical conductors being connected to at least one of the optical fibres in the plurality of fibre optic cables, wherein at least one of the first lower laminate layer or the first upper laminate layer is so constructed that it attaches at least one of a jacket over a first. Advantageously, the fibre optic routing board additionally comprises a second laminate layer positioned between the first upper or lower laminate layer and the optical conductors. The use of a two layer laminate allows each of the laminate layers to have different properties.

Abstract: A surface mount technology compatible electromagnetic interference (EMI) gasket assembly includes an electrically conductive gasket material, a solderable electrically conductive support layer, and an adhesive or other mechanical assembly for affixing the electrically conductive gasket material to the support layer.

Abstract: A solid polymer electrolyte composite for an electrochemical reaction apparatus that possesses satisfactory ion conduction properties and has excellent mechanical strength and heat resistance, is provided, the solid polymer electrolyte composite is characterized in that a solid polymer electrolyte is contained in the continuous pores of an expanded porous polytetrafluoroethylene sheet which has continuous pores and in which the inner surfaces defining the pores are covered with a functional material such as a metal oxide. An electrochemical reaction apparatus containing an electrolyte, wherein said electrochemical reaction apparatus is characterized in that the aforementioned solid polymer electrolyte composite is used as this electrolyte is also provided.