Abstract: A relay is enclosed between a cup-shaped cover and a plate. The cover includes a bottom and side walls. The interior circumference of the distal end of the side walls is notched a rim. A first flange is formed on the plate a distance from the edge of the plate that is smaller than the thickness of the rim. The height of the first flange is less than the length of the rim. A second flange extends from the first flange generally perpendicularly to the plate, sloping away from the outer circumference of the plate. As the cover is moved toward the plate, the second flange engages the inner surface of the wall and forces it outwards moving the rim toward the first flange. When the rim and first flange meet, ultrasound is applied. The rim and first flange melt at their point of contact and air is compressed in a pocket formed by the wall, rim, and second flange as the rim moves toward the plate, forcing the flash from the enclosure. Any flash which is not forced from the enclosure is trapped in the pocket.

Abstract: A two-piece wall plate for use with a wall mounted receptacle, switch or other wiring device. A first, frame-like base plate is secured by screws to the mounting ears of the wiring device, and a second, frame-like cover plate is releasably connected to the base plate, in covering relation thereto. A bezel portion of the base plate closely surrounds the periphery of one or more wiring devices mounted in the usual way in a conventional wall box, and extends through a central opening in the cover plate. The cover plate is mounted on the base plate by a snap fit connection provided by elongated grooves in the outwardly facing side surface of the bezel which receive elongated ridges extending inwardly about the boundary of the central opening in the cover plate.

Abstract: An electrical distribution load center consists of a non-conductive enclosure and a circuit breaker bus bar support panel that are interconnected by interlock members that can be snap-fitted to secure the two panels to each other. The support panel also has a latch member so that the bus bars can be mounted onto the panel in a heat-staking, insert-molded or snap-fit arrangement. The support panel also has elements for locking the circuit breakers onto the panels in conducting contact with the bus bars. The enclosure and the support panel are enclosed by a non-metallic trim panel that has a non-metallic door hinged thereto and which carries a latch for latching the door to the trim panel.

Abstract: An electrical connector for connecting liquidtight flexible electrical conduit to an electrical component such as a junction box or outlet, comprises a two-piece, all plastic construction. The connector comprises a plastic body and a plastic gland nut threadably attached thereto. The body includes a plurality of flexible fingers, each of which has thereon a pair of friction-reducing ridges that engage an inner contact surface of the gland nut in tangential, point-contact. As such, upon tightening of the gland nut on the connector body, the gland nut engages the resilient fingers with minimal friction loss, thereby enhancing hand tightening or minimizing the torque required with a tightening tool. In addition, the connector body includes an inner tubular ferrule which defines a conduit supporting surface which includes thereon friction-reducing elements.

Abstract: The junction box for cable connections is designed as an equipment box or junction box for cable conduits and has a bottom (20) and at least one lateral wall (22), in which is provided a slot (26) for insertion of a cable (28). This slot is open either towards the upper free edge (30) of the sidewall (22) or separated from the latter by a cross-piece (68) and the width of its internal opening is progressively narrower towards the bottom (20). Projecting from the walls (40) of the slot (26) are retaining protuberances facing the opposite wall (40), which secure an inserted cable (28). At least one slit (46) is provided in the sidewalls (26), laterally and separated from said slot (26) by an elastic region of the wall measuring a few millimeters. Said slit (46) becomes narrower when the cable is inserted (28) in the slot (26) and thus provides the walls (40) of the latter with a certain degree of elasticity.

Abstract: A connector for coupling an electrical conduit to a support, such as junction box, having variable thickness. The connector includes a one-piece tubular body member with resilient legs having locking tongues, external threads, and a receiving formation for receiving the conduit; and a one-piece take-up nut with an abutment surface and internal threads for engaging the external threads of the body member. The resilient legs are snapped into the support, and the take-up nut is screwed onto the body, clamping the support between the locking tongues of the legs and the abutment surface of the take-up nut. The electrical conduit is frictionally retained in an annular recess in the body member or is threadedly retained within the hollow portion of the body member or within the take-up nut. The conduit is a sheath, cable, or other suitable signal line.

Abstract: A plastic load center box economically provided by duplicate molded end sections joined by an intermediate section of uniform cross-section which is readily provided in selected lengths in either molded or extruded form. End walls receive metal inserts electrically interconnected to provide grounding when attached to grounded conduit, or plastic inserts where the load center application does not require grounded conduit. Molded end sections have formed knockouts and wire clamping tabs.

Abstract: The present invention discloses a junction box cover without any metallic parts. The junction box cover includes a one-piece, non-metallic face plate with a generally flat upper surface and at least one cutout adapted to reveal an electrical receptacle. A non-metallic receptacle cap is shaped to fill and cover the cutout with a pivot at one end thereof for mounting the cap flush with the upper surface of the face plate when in a closed position, and for exposing the receptacle when the cap is in a open position. A non-metallic retaining bar is utilized to secure the pivot of the cap to the face plate and to provide a retaining pressure for maintaining the cap in an open position.

Abstract: Disclosed is a radial solution to integrated circuit chip carrier pitch deviation. The invention comprises a chip carrier comprising a carrier body with a plurality of fine pitch metalizations. Each of the metalizations includes an axis with an extension line that intersects a point common to all axes so that each metalization may be functionally utilized independent of carrier body shrinkage tolerances.

Abstract: A connector for terminating an electrical cable having a conductive sheath is disclosed. The connector includes a gland for receipt of the cable and a gland nut securable to the connector gland. Sealing structure supported between the gland and the gland nut effects a seal between the gland and the cable upon screw attachment of the gland nut to the gland. A sheath ground provides ground connection of the sheath to the connector upon initial insertion of the cable into the connector and also provide permanent mechanical and electrical connection between the sheath and the connector upon tightening of the gland nut to the gland.

Abstract: Housing assembly for components, such as Hall effect sensors, comprises an inner housing of premolded relatively firm plastic material and an outer housing which is overmolded on the inner housing. The components are contained in cavities in the inner housing. Passageways extend through the inner housing to the cavities and the soft overmolded material flows through these passageways and forms a surrounding cushion within the cavities for the components. Also disclosed is a system for mounting proximity sensors on an automotive door lock or the like in a manner which detects the fully closed and the partially closed conditions of the door.

Abstract: A low rise false flooring structure designed for use in applications where it is desirable to maximize the distance between the false floor and the ceiling and also maximize the space or chase under the false floor above the base floor structure. Fireproof fibrous pads provide structural integrity to thin metal panels to construct the flooring panels of the false floor. Knockout plates provide openings in each flooring panel to access the chase.

Abstract: An electrical wiring box for mounting an electrical device therein by means of push inserted screws is provided. The box is defined in part by a pair of parallel spaced sidewalls and a pair of parallel spaced end walls. A mounting bracket is formed on each end wall for the snap mounting of a resilient screw receiving spring clip. Each spring clip is formed of a strip of resilient metal bent to define a base portion, upwardly disposed side portions and inwardly disposed top portions, such that the ends of the strip are positioned adjacent one another. The ends of the top portions are bent downwardly and inwardly of the clip to define a spring receiving space therebetween. The base portion has a spring receiving opening defined by a pair of downwardly bent tabs which is aligned with the space defined by the ends of the strip. In operation the spring clips are snapped into engagement with the respective brackets and the electrical device positioned within the wiring box for mounting.

Abstract: A plastic electrical connector for connecting liquidtight flexible electrical conduit to an electrical component such as a junction box or outlet, comprises a plastic body and a plastic gland nut threadably attached thereto. The body includes a plurality of flexible fingers, each of which includes a collapsible section defined by plural, discrete hinges, the deformable section being bendable at each hinge. Gripping teeth are provided on the interior surface of the ends of the flexible fingers. The gland nut includes an inclined surface engageable with the flexible fingers for causing radial compression against the conduit. The gland nut further includes a pushing surface for engaging the distal end of the flexible fingers, which are preferably arranged in cantilevered form. Upon tightening the gland nut on the body, the gripping fingers engage the conduit, and as the collaspsible sections bend, the fingers axially move the conduit deeper into the connector for a liquidtight seal therewith.

Abstract: An afterset comprising a plastic flush floor fitting assembly to service a work station with high and/or low tension, a metal attaching ring clamped to an in-floor duct, and screws bearing on the assembly and threaded into the attaching ring.

Abstract: A panel for free access to a signal cable and a power cable is installed on the floor of an office room and forms a network of signal cables in an office. The posts of this panel are mounted on the floor. A floor plate is secured to the upper ends of the posts. A rack plate is arranged between the floor plate and the floor, and the rack plate is secured to the posts. The height of the floor plate and the rack plate is adjusted by adjusting the engaging position by rotating a leg to be engaged with the threaded holes of the posts. The floor plates are composed of a plate made of glass, reinforced cement mixed with foamable styrol or an aluminum honeycomb structure. The rack plate is composed of a transparent polypropylene plate. Further, the surface of the floor plate is covered with a surface material such as a carpet. The signal cables are arranged in the space between the floor plates and the rack plates. The power cables are arranged in the space between the rack plates and the floor.

Abstract: A safety cover for an electrical receptacle has a receiving plate fitting over an electrical receptacle, and a cover assembly having a cover edge extending around the periphery thereof hinged to the receiving plate to pivot between a closed and an open position. The cover assembly has a plurality of locking projections spaced around the periphery of the cover assembly at positions so that they are incapable of simultaneous operation by a hand below a predetermined size. When the cover assembly is closed, locking hooks on the locking projections engage in locking hook apertures in the receiving plate structure and the cover edge is snugly abutted against the receiving plate structure, and the cover assembly can be moved to the open position only by simultaneous deformation of the cover assembly at the positions of the locking hooks sufficient to move the locking hooks sufficientyl far inwardly to free said locking hooks from the locking hook receiving apertures.

Abstract: A knockout structure includes two knockout members supported by bridge members in a D-shaped opening through a wall. The knockout members are supported in the opening recessed behind a front surface of the wall. Each connector type is formed with a flat surface at one side which engages the flat portion of the D-shaped opening in the recess region, thereby restraining which ever type of connector is used against rotational motion.

Abstract: A cover plate assembly for wall-mounted electrical wiring devices includes a plate frame disposed on a wall surface as surrounding a wall opening in the wall surface. The wall opening is provided to receive therein one or more electrical wiring devices such as switches. The plate frame has a window through which a portion of the wiring device extends outwardly. A face plate is placed over the plate frame to entirely conceal the same. The face plate is made from a plastic material and has a center opening through which a portion of the electrical wiring device is exposed to be accessible from outside of said face plate. Also included in the assembly is an under plate which is to be fixed with respect to the wall surface for holding said plate frame therebetween. The under plate is made from a flat metal stamping and secured to the rear of the face plate for reinforcement of the same.

Abstract: An elongated power compartment to be disposed inside of a trenchduct. The compartment having a bottom wall and two side walls. Centrally of the compartment, an opening is formed in the bottom. On each side wall and centrally of the compartment there is a downwardly extending barrier. The bottom opening is to provide access to a power cell in a underfloor raceway and the barriers function to prevent the passing of power cable out of the space beneath the compartment into the low tension side of the trenchduct. The bottom opening is in communication with the raceway valleys.