Abstract: The outer insulation on a cable to be terminated is removed leaving a section of exposed cable shield. An annular metal contact with a deformable circumferential flange is received on the cable and affixed (soldered) to the bare shield completely encircling the shield with a mechanical and electrical connection. A receiving tube slid onto the cable has a contoured end for receipt under the contact flange. A clamping ring is soldered, mechanically or electromagnetically formed over the flange and contoured end of the receiving tube.A cylindrical cap encloses the bare shield section and contact with thin-wall portions being deformed to tightly engage the receiving tube. The cable and outer end of the receiving tube are passed through an opening in a termination plate (e.g., ship deck) and the receiving tube is welded to the plate.

Abstract: A semiconductor chip housing provides hermetic sealing and appropriate electrical characteristics for use at high frequencies. The housing comprises a substrate in which the chip is mounted and a cylindrical tube having a top cover and extending above the substrate which impinges on a base and thus hermetically seals the chip. Microthin leads extend from the substrate periphery to the chip. The leads carrying high frequency signals have notches therein to compensate for the impedance introduced by the tube and to enable the microstrip to present a constant impedance at high frequencies throughout its length.

Abstract: Solid state memory devices employed in crash survivable flight data recorders must be thermally insulated to prevent loss of stored data if the aircraft burns. To provide adequate thermal isolation at minimal size, the solid state electronic memory devices (26) are encapsulated in a synthetic organic wax or pentaerythritol (28) that exhibits a phase transition at a temperature: (a) above the normal operating temperature of the memory unit (10); and below the maximum acceptable peak temperature for the memory devices (26). The synthetic organic wax of pentaerythritol (28) is surrounded by a thermal liner (18) constructed of solid thermal insulating material. A metal enclosure (12) houses and protects the thermal liner (18), the synthetic organic was or pentaerythritol (28) and the memory devices (26).

Abstract: An electrical cable gland, generally of the type comprising two parts having a tubular configuration and interengaged by means of screw-threads is provided with an elastomeric tubular sealing sleeve, sealing onto a smooth outer surface of one part and engaging an end face of a second part so as to extend across and seal the entrance and outer surfaces of the screw-threads. The cable gland preferably has an internal armor clamp associated with electrically conductive metal inner parts and has its entire operative outer surface made of an electrically insulating and/or corrosion resistant material. The cable gland also preferably has an inner and an outer seal of the compression type.

Abstract: In accordance with the present invention, there is provided a rigid U-shaped bracket having its end portions projecting along a pivot axis which is substantially parallel to the bottom of the U-shape. Brackets are provided for pivotally mounting the U-shaped bracket to a cabinet in a position proximate the cables and the electronic equipment served by the cables, such that the cables are positionable between the U-shaped bracket and a portion of the cabinet with substantially a 90.degree. bend. A pull on any, or all, of the cables positioned under the U-shaped bracket will cause the bracket to rotate around the pivot axis, toward the cabinet, creating a clamping action on the cable. The clamping action prevents the transmission of the pull to connectors connecting the cables to the equipment within the cabinet.

Abstract: A corrosion resistant resilient electrically conductive gasket is comprised of a metal-containing conductive elastomer which has had any exposed metal coated with a protective conductive coating. The metal may be silver and the coating may be tin-lead solder applied by immersing the gasket into a molten solder bath.

Abstract: A door seal used in shielded enclosures for ensuring that high and low frequency electromagnetic waves are not allowed to pass through the shielded enclosure. One portion of the door seal contains a cavity having a dielectric material therein. Additionally, a small gap is provided in the periphery surrounding the cavity such that a voltage dividing network is established in the door seal for attenuating the effect of any high frequency or low frequency electromagnetic wave which would pass in either direction through the seal.

Abstract: A radiation protective device for a fire-protecting lead-through intended to accommodate electric, metal-encased cables passing through a metal wall, said lead-through comprising a frame having its opening filled with packing pieces, stay strips and an arrangement for compressing the block formed of the packing pieces, the protective device including metal shield plates inserted in their respective packing piece in a plane parallel with the packing piece block and covering, together with the through-passed cables, the entire cross-sectional area of each packing piece and forming upon compression of the block a continuous metal shield which is in electrically conducting contact with the frame, the stay strips and the cable casings.

Abstract: In connecting an electronic circuit part such as a semiconductor or other part to a substrate for mounting the part with solder, the solder is composed of a high-melting-point solder portion which is subjected to working such as rolling and heat treatment in order to break the cast structure thereof, and a smaller volume of low-melting-point solder portions. The high-melting-point solder portion is connected to both the electronic circuit substrate and the electronic circuit part through the low-point-melting solder portions.This method enables interconnection between objects to be connected without impairing the high ductility and toughness of the high-melting-point solder which is subjected to working and heat treatment. This soldering method ensures highly reliable manufacture of miniaturized high density circuits, such as LSI.

Abstract: A package for a microwave semiconductor device or circuit is provided having an electrical terminal suitable to cascade connection. The package includes a metallic container for the semiconductor device or circuit and a single electrical terminal having a plurality of strip lines formed thereon. The electrical terminal is composed of an insulating material base on which the strip lines are formed in parallel relationship and a plurality of insulating material block members disposed on the insulating material base so as to cover the middle portions of corresponding strip lines. The insulating material base and block members are sintered to form a unified body. The electrical terminal thus obtained is engaged in a through-hole formed in the side wall portion of the metallic container so that the strip lines penetrate perpendicular to the side wall portion, and is then, hermetically sealed to the container.

Abstract: A pressurized cabin for temporary or permanent confinement of electrical equipment in mines has one or more octagonal units and two sidewalls flanking the unit or units. Each unit is assembled of four sections each having a longer panel and a shorter panel, as considered in the circumferential direction of the respective unit, and the two panels of each section make an acute angle. The marginal portions of all sections are provided with borders which extend into the interior of the respective unit and are secured to each other, to the neighboring units and/or to the sidewalls by screws or bolts and nuts. Two of the longer panels in each unit are horizontal and the other two longer panels are vertical. The shorter panels have openings for the passage of pneumatic or hydraulic conduits and/or one or more electric cables. Such shorter panels can carry pressure relief and/or pressure reducing valves, or they can be connected to columns which mount the respective unit of a platform.

Abstract: A swivel fitting for electrical conduit and the like comprising a first fitting part having an axially extending tubular section and a second fitting part having a generally cylindrical axially extending section disposed in sleeved relationship within the tubular section of the first fitting part and having a distal end surface engageable with a transverse shoulder formed within the interior of the tubular section of the first fitting part. The second fitting part has a head portion with a generally annular channel for receiving the distal end of the tubular section of the first fitting part. The channel is delimited by a transverse surface which is axially spaced from the transverse end face of the cylindrical section so that in any position of the fitting, rainwater and other liquid spray will be prevented from intrusion into the interior wireway formed by the fitting.

Abstract: In an underfloor electrical distribution system, a feeder arrangement for directing power and communication conductors from one or more closets to the distribution runs of the system wherein a plurality of junction boxes are arranged in a line in end-to-end abutting relationship, each having interior means forming power and communication channels electrically isolating conductors respectively disposed therein from one another, the respective channels providing for power and communication conductors to enter through one end of the box and exit through an opposite end and/or to enter or to exit through one or more openings provided in one or both of the sides of the box.

Abstract: Disclosed herein is a package assembly for a semiconductor device or devices. The package assembly has a ceramic package body and at least one ceramic cover plate. The package body has a circular outer periphery provided with a plurality of projections to be fitted in grooves formed in an inner peripheral surface of a base board, and a plurality of connector terminals on the surface of the body. Also, the package body is formed with a stepped portion or portions in the rear face thereof. The cover plate or plates are sealed to the stepped portion or portions by pastes applied to both the cover plate and the stepped body portion. This ceramic package assembly enables compactness, moisture-proof complete seal and easy mounting thereof.

Abstract: A novel clip-on shielding strip is disclosed, intended particularly for cabinets for electronic equipment such as computer apparatus, and the like, where it is necessary and/or desirable to provide access doors or panels and to effectively shield such doors or panels at the closure interfaces to prevent or reduce the escape of stray radio frequency and/or electromagnetic interference radiation. The new clip-on shielding strip is characterized by a specifically advantageous physical configuration which, on the one hand, simplifies and expedites installation in the first instance and, on the other hand, assures excellent electrical grounding of the strip to the current structure, providing a high degree of reliability in the shielding function of the strip.

Abstract: An inductor housing having a platform for supporting an inductor and a standoff unit for supporting the platform away from a conductor board such that various electrical components can be installed on the conductor board between the inductor platform and the conductor board surface. The inductor housing also has a hole disposed therethrough such that the inductor housing may serve as an insulating standoff support member for connecting a conductor board to a chassis.

Abstract: A method, and apparatus for practicing the method, is provided for the transit of one or more cables through an opening in a bulkhead while preventing electromagnetic interference and electromagnetic pulse energy from passing through the opening. A housing of electrically conductive material is positioned in the opening and secured around its full perimeter in electrically conductive contact with the bulkhead. The sheathing of each cable is treated so that the conductive shield of each cable is exposed. The cables pass through the housing with their exposed shield being within the interior of the housing. The end portions of the housing are sealed, such as by the use of deformable material. Electrically conductive material, such as shot, granules, powder, grease, liquids or the like, is used to fill the interior of the housing to form conductive paths between the shield of each cable and the housing. The material may be in the form of particulates, semi-liquid, or liquid, including conductive coatings.

Abstract: An improved electronic component or integrated circuit (IC) package characterized by an extraordinary small size for the number of input-output (I/O) leads which are available and capable of use on surface mounted, Flat Pack, hybrid, or through hole (DIP) printed circuit boards. The package has one or more cylindrical or shaped forms at the base, with a flange to provide a stop in order to limit the insertion travel in those circuit boards having through holes, and a top body which is used to house the electronic device. The forms, which protrude down from the upper body (housing), have one or more conductive lead segments, either pins or printed circuit types, running longitudinally and continuing through the housing to the upper body.Each lead segment is connected directly to the electronic device or attached via an additonal lead to a pad on the electronic device, mounted on the upper body. A cover to seal the device is provided.

Abstract: A raintight electrical junction box is disclosed for use outdoors and includes a base member having a peripheral channel while the cover has a labyrinth profiled to be received in the channel, when the cover is placed over the base member. The mating geometry of the labyrinth and the channel provide a gasketless peripheral seal between the cover and base member.

Abstract: An electronic switch includes a detector head in the form of a rectangular parallelepiped having a detecting surface and connecting members disposed on a corner thereof including a surface opposite to the detecting surface, the connecting members being identical in shape when the detecting surface is oriented in either a forward or lateral direction, the connecting members being symmetrically arranged with respect to an edge of the detector head, a head joint having an end to which the detector head is connectable by the connecting members and also having a rotatable annular connector on an opposite end thereof, and a switch box having engagement means for slidable engagement with the annular connector of the head joint so that the head joint can be rotatably mounted on the switch box. The detecting surface can be oriented in all of lateral directions by rotating the head joint.