Abstract: A microelectronic capacitor is formed by nitrating the surface of a conducting electrode on a microelectronic substrate. The nitrated surface of the conductive electrode is then oxidized. The nitrating and oxidizing steps collectively form a film of silicon oxynitride on the conductive electrode. A tantalum pentoxide film is then formed on the oxidized and nitrated surface of the conductive electrode. The tantalum pentoxide film may then be thermally treated in the presence of oxygen gas. High performance microelectronic capacitors are thereby provided.

Abstract: An optic module contains a flexible circuit board forming a cable which connects between an optical sub-assembly and a rigid interconnect structure within the optic module. One end of the cable includes lands proximate to through holes for soldered connection to pins which extend from the optical sub-assemblies. At the other end of the cable leads extend across interconnection pads on the surface of the rigid interconnect structure for soldered connection. The top surface of the interconnect pads is 10/90 (Sn/Pb) solder to provide a high temperature soldered joint. Solder flux can not be used because cleaning solvents would contaminate the interconnect structure. An atmosphere of formic acid mixed with nitrogen surrounds the lead and pad and a fluxless solder joint is formed.

Abstract: A method of manufacturing a card with a built-in electronic part including a first step of mounting an electronic part, such as an LSI module, on a first bottom-covering material, applying a first molten resin onto the first bottom-covering material and the electronic part, and placing a first top-covering material on the fist molten resin. A second step includes curing the first molten resin, thereby forming a first structure of at least the first cured resin and the electronic part, and mounting the first structure on a second bottom-covering material. A third step includes applying a second molten resin onto the first structure and placing a second top-covering material on the second molten resin. A fourth step includes curing the second molten resin, thereby forming a second structure of at least the second cured resin and the first structure. A fifth step includes cutting the second structure thereby forming a card.

Abstract: An electrical cable for connecting transient voltage surge suppressers to ectrical power panels. A strip of electrically conductive foil defines a longitudinal axis, with a length of an electrical conductor electrically attached to the metallic foil along the longitudinal axis. The strip of electrically conductive foil and the length of an electrical conductor are covered by an insulating material. For impedance matching purposes, triangular sections can be removed from the ends of the electrically conductive foil at the time of installation.

Abstract: An improved RF shielding apparatus includes a shield frame having a nonconductive gasket mounted to the edges thereof. A conductive layer is deposited on the gasket and shield frame such that a substantially continuous layer surrounds the gasket and shield frame.

Abstract: A threaded attachment rod for use in assisting the installation of an electrical fixture to a structurally mounted electrical junction box. The attachment rod has opposite threaded end portions, one end threadably engagable with the junction box and an opposite end portion. The attachment rod has a fastener engaged with the opposite end thereof and a notch formed at a predetermined location between the ends thereof. The fastener is adapted to support the fixture temporarily at a distance from the junction box sufficient to provide access sufficient to complete an electrical connection between the wires from the junction box and from the electrical device carried by the fixture. An upset portion is formed in a threaded length of the attachment rod above the notch.

Abstract: A device for a mounting electrical component includes a bracket and an electrical box. The bracket includes a U-shaped portion for being securely disposed to a stud or beam. An electrical box is mounted on the bracket. In one embodiment, the bracket may be configured such that an electrical box may be disposed on one side of the bracket facing in a first direction and a second electrical box may be disposed on the other side of the bracket facing in a second direction, which is opposite to the first direction. Thus, the first opening may be disposed on one side of a wall, while the second opening may be disposed on the second side of the wall. In the alternative, an electrical box in accordance with the invention may be used. The electrical box in accordance with the invention includes a first chamber having a first opening facing in a first direction and a second chamber having second opening facing in a second direction. The first and second directions are opposed.

Abstract: A data communication cable for transmitting high frequency signals which includes at least one pair of conductors wherein each conductor is enclosed by a first inner layer of insulation and a second outer layer of insulation, and wherein the insulated conductors are enclosed by a jacket. The first inner layer of insulation is a polyolefin which may include a flame retardant and is in the form of an extruded expanded foam. The second or outer layer of insulation is a fluoropolymer and the jacket is a flame retardant and low-smoke PVC composition.

Abstract: A nonuniform dielectric is located proximate to a conductive surface, the dielectric being substantially nonuniform with respect to the surface area of that conductive surface. If there are plural closely spaced conductors in a structure, then the nonuniform dielectric is located outside the space between these closely spaced conductors. Making the proximate dielectric nonuniform instead of uniform can provide advantages in better electrical performance for the proximate conductor.

Abstract: A hermetic seal for an electronic component has a cap having a base portion with laterally extending walls. The laterally extending walls define a main chamber therebetween. A cavity is formed in the end of the laterally extending walls to define a secondary chamber and divide the end of the laterally extending walls into a first area and second area. The cap is hermetically sealed to the base at the first and second areas of the laterally extending walls so that the secondary chamber and the main chamber are separately hermetically sealed.

Abstract: A mild steel outlet box is stamped from flat sheet stock into a base and a cover that fit together with an interference fit that avoids the need for threaded fasteners. The base has circular knock-outs in the side and end walls, each of which is aligned with a knock-out slot in the bottom wall to allow an electrical metal tube (EMT) to be secured to the box without the usual offset bend. Each such knock-out opening also has a set screw threadably received in an integrally formed land aligned with the knock-out opening to secure the tubing to the base. An electrical device can be pushed into place without threading its fasteners. Hardened steel clips are mounted to the base for slidably receiving such fasteners so they must be unthreaded for removal. Each clip has a V-shape with the apex of the V defining a slotted opening that so receives the threaded fastener.

Abstract: A cover which improves the aesthetic appearance of the back of a desktop computer which also provides protection for the leads and wires protruding from the back of the CPU (Central Processing Unit). The cover can be conformally molded of an opaque plastic material of sufficient thickness and strength as to provide protection for the rear components of the CPU. The design of this cover presents a shadow over the unsightly protruding wiring while maintaining adequate cooling airflow using a venturi generated by the CPU cooling fan and natural heat convection. Attachment shall be of a simple, easily attachable/detachable type requiring little or no modification to the CPU housing using preferably nonelectically conductive materials such as stick on hook and loop fasteners. The cover design shall be adaptable for both conventional desktop and tower type (vertical) CPUs.

Abstract: It is beneficial for an FPGA, PROM, DRAM and superconductive circuit to use a protective ceramic as its insulating material. This protective ceramic can densely cover metal surface and is free of defects. As a result, a high yield can be ensured. The Pilling-Bedworth ratio is a good indicator of the protective nature of an insulating material. It is desirable to limit the Pilling-Bedworth ratio larger than 1 and preferably smaller than 2. Multiple layers of ceramics can be used to further reduce the defect density and improve yield.

Abstract: A cable having one or more electrical conductors or a core of electrical conductors, each electrical conductor or core being surrounded by an insulating composition, essentially free from water tree growth inhibitors, having(i) a polyethylene having a density in the range of 0.860 to 0.940 gram per cubic centimeter; and, based on 100 parts by weight of component (i),(ii) about 0.2 to about 1 part by weight of a homopolymer of propylenewith the proviso that the insulating composition is extruded at a temperature below the melting point of the homopolymer of propylene.

Abstract: A flexible and limp cable (1) is constructed with: an outer jacket (2) containing at least one row of adjacent insulated conductors (3) circumferentially encircling an elongated axis lengthwise of the cable (1), and conductive drain wires (4) in selected interstitial spaces along the adjacent insulated conductors (3), the insulated conductors (3) and the drain wires (4) extending helically along the axis, and a conductive membrane (7) circumferentially enclosing the insulated conductors (3) and the drain wires (4), and the membrane (7) engaging the drain wires (4).

Abstract: In a semiconductor device, such as a memory cell, including a capacitor, a corrugated electrode is used as a lower electrode of the capacitor and is covered with an insulation film to be opposed to an upper electrode. The corrugated electrode is specified in section by a series of folded portions which are alternately folded vertically and horizontally. Practically, the corrugated electrode is formed by a corrugated wall which surrounds a hollow space and which has a rectangular or a polygonal shape on a plane. Alternatively, the corrugated wall has an irregular surface formed by an aggregation of grains so as to effectively widen a surface of the lower electrode. Such a corrugated electrode may be manufactured by a mold which is formed by selectively etching a stack of first-kind spacer films and second-kind spacer films.

Abstract: A composite cable with built-in signal an power cables is mainly used as a control cable for a machine tool and the like. The composite cable contributes to reduced cost, downsizing, higher reliability and higher safety, which are obtained because only a single cable needs to be laid, instead of the conventional cable, which requires multiple cables to be laid. In the composite cable with the built-in signal and power cables, a flat signal cable formed by a plurality of insulating cores arranged in parallel in the lengthwise direction, and having alternately repeated combined portions and separate portions is spirally wound into a roll around one or more power cables provided in the center of the composite cable. The power cables each have a large conductor size. A first shield is optionally provided around the flat signal cable. A second shield is optionally provided around the power cables. A sheath is provided around the flat signal cable or the first shield.

Abstract: A weatherproof safety case for a plug and receptacle connection of electrical power cords. The case includes a molded plastic housing divided into first and second parts having mating edges. An integrally molded hinge of thin plastic material joins the first and second parts along one side of the mating edges. A clasp-like member extends alongside one of the mating edges. The resilient gasket is formed with an enlarged pad adjacent to each end of the hinge for providing a seal between the hinge and the mating edges when the case is shut. The case also includes labyrinth seals, each labyrinth seal being divided into two portions by the mating edges of the first and second parts of the housing Each portion is coupled to either the first or second part of the housing, and is formed with at least two spaced apart flexible partitions having semicircular edge cutouts. One of the edge cutouts is of a larger diameter than the other.

Abstract: Flat cables 12 are arranged on a plane, and insulating sheaths 11 are fused and connected at ends of the flat cables 12 to form a first fused portion 16. A second fused portion 17 is formed next to the first fused portion 16. Further, the insulating sheaths 11 are fused and connected in intermediate positions of the respective flat cables 12, thereby forming a third fused portion 19. The first fused portion 16 strengthens the connection of a flat multiple-core cable at its opposite ends without fusing and adhering a tape thereto. The second fused portion 17 prevents the flat multiple-core cable from being bent during the insertion into a terminal in an equipment. After the insertion, the second fused portion 17 having a sufficient flexibility permits the flat multiple-core cable to be bent near the opening of the terminal.

Abstract: The present invention pertains to a composite structure comprised of a matrix material, such as metal, and a plurality of cubic boron nitride particles dispersed within and surrounded by the matrix material. In a first embodiment, the composite structure is used as an electronic package to house an electrical device such as an integrated chip. The cubic boron nitride particles are dispersed within the matrix material in proportion such that the coefficient of thermal expansion of the package essentially matches that of the electronic devices. In another embodiment, the composite structure can be used as a thermal conductor, such as a heat sink. Since cubic boron nitride particles have the highest thermal conductivity of any ceramic, they act in combination with the matrix metal to transfer heat efficiently. In another embodiment, the composite structure can be used as a component subject to attrition. The cubic boron nitrides offer unexcelled wear resistance and transfer the heat efficiently.