Abstract: An enhanced terminal screw for use in an electrical receptacle includes a shank, a head and a plurality of impeller wire gripping elements. The shank has opposite ends. The head is mounted to one of the opposite ends of the shank. The head has an underside surface defining a plurality of spaced apart grooves. The impeller wire gripping elements are defined by a plurality of lands formed between the spaced apart grooves on the underside surface of the head which grip a wire partially surrounding the shank and wrap the wire radially inwardly toward the shank as the screw is tightened relative to the wire. Each land has opposite edges providing a gripping surface.

Abstract: A load break interrupter includes a case, an arc-suppressing tube mounted on and projecting outwardly from the case, a shunt circuit rod slidably supported in the tube with the rod and tube having electrical contacts mounted thereto and convertible between make and break conditions upon sliding of the rod into and from the tube, and a shunt circuit break actuating mechanism disposed in the case and coupled with a leading end of the rod extending into the case such that upon tripping of the actuating mechanism from a shunt circuit-defining position to a shunt circuit-breaking position the rod is pulled partially into the case from the tube thereby breaking the shunt circuit through the rod and between the electrical contacts such that any arcing that occurs upon breaking of the shunt circuit is confined and suppressed inside the tube.

Abstract: An enhanced telecommunications cabinet assembly for enclosing wiring interconnections includes a chassis defining an interior cavity, a movable interconnect management adapter tray positioned in the interior cavity of the chassis, a plurality of modular interconnect panels mounted on the movable adapter tray, and front and top covers on the chassis. The chassis has a bottom wall and a pair of opposite sidewalls extending upward therefrom so as to define the interior cavity between the sidewalls and above the bottom wall. The chassis further has a pair of lower guide members positioning the movable adapter tray in the interior cavity of the chassis for movement relative thereto.

Abstract: An electrical receptacle includes a receptacle body, test and reset switches and a pair of projections. The body has electrical elements disposed therein for making electrical contact with an electrical plug of various diameter sizes. The body has a face with a set of apertures for receiving prongs of the electrical plug for mating of the plug with the receptacle. The switches are mounted to the face of the body adjacent to the set of apertures and are actuatable to affect operation of the electrical elements. The projections are made of a substantially rigid material and mounted to the face of the body adjacent to the test switch and the set of apertures and protrude from the body.

Abstract: A fixture for installing a flexible wire mesh grip over an elongated cable includes a base having spaced opposite ends and an internal cavity extending longitudinally therebetween. The spaced opposite ends define respective first and second passages opening into the internal cavity. The internal cavity has a cross-sectional size larger than that of a tubular body of the grip in a compressed non-gripping condition to accommodate the presence of the tubular body in the compressed non-gripping condition and of an annular collar secured on one end thereof within the internal cavity. The internal cavity and first and second passages of the base have respective cross-sectional sizes larger than that of the cable to permit insertion of the cable therethrough.

Abstract: A housing for an electrical wiring device includes an adjustable clamping mechanism for retaining electrical conduits therein. The clamping mechanism has a pair of opposing strain relief members on opposite sides of a conduit passageway, set to accept a predetermined conduit width. Each strain relief member has a frangible portion which can be removed by a user. In this manner, if a user desires to retain, by means of an interference fit, a conduit having a diameter larger than the predetermined spacing of the intact strain relief members will allow, one or both frangible portions can be removed to accommodate a larger sized conduit. Alternatively, more than one pair of strain relief members having frangible portions can be alternately arranged to clamp a conduit in an S-shaped configuration, capable of accepting multiple conduit sizes by removing some or all of the frangible portions.

Abstract: A wire connecting unit for an electrical connector includes a printed circuit board and four pairs of terminals. The printed circuit board has nose and termination areas, and a wire receiving passageway extending along an axis in the termination area. Contact connections are mounted in the nose area. Terminal connections are mounted in the termination area. Conductive paths on the circuit board electrically couple respective contact connections and terminal connections. Each of the terminals has a coupling portion mechanically and electrically coupled through one of the terminal connections, and has an insulation displacement contact portion. Each insulation displacement contact portion is adjacent the wire receiving passageway and extends in a plane oriented at an acute angle to the passageway axis.

Abstract: A luminaire housing includes a frame having a securing member, a door panel movable between open and closed positions relative to the frame, and a hinge member. The hinge member pivotally connects the door panel and the securing member and includes a fixed end portion, a first angled ramp portion, a second angled ramp portion, and a centering portion. The fixed end portion is attached to the door panel and the first angled ramp portion extends from it. The fixed end portion includes an open hinge surface. The second angled ramp portion extends from the first angled portion and the centering end portion extends from the second angled ramp portion, forming a closed hinge surface between them. The open hinge surface of the first hinge member is in contact with the securing member of the frame when the door panel is in the open position.

Abstract: A housing assembly includes a combination lens and window retainer, an inner optical lens, an outer optical window and a front cover. The retainer includes a middle body structure, a pair of side wing structures, an inner seat and an outer seat. The middle body structure has opposite lateral sides, interior portions and exterior portions. The side wing structures are attached to and extend in opposite lateral directions from the opposite lateral sides of the middle body structure. Each side wing structure has exterior portions. The inner seat is defined on the interior portions of the middle body structure. The outer seat is defined forwardly of the inner seat on the exterior portions of the middle body structure and of the side wing structures. The inner optical lens is mounted to the inner seat of the retainer. The middle body structure and side wing structures together define an opening aligned with the inner optical lens and provides an unobstructed forward panoramic field of view through the retainer.

Abstract: A faceplate assembly, for use with an electronic circuit card, comprising a faceplate and a movable plate, each including conductive portions or being made of a conductive material, and in electrical contact with each other. The faceplate is adapted to mount to an electronic circuit card, and has first and second opposite edges. The movable plate has a free edge and is movably coupled to the faceplate to move, by pivoting, sliding or the like, with respect to the faceplate between a retracted position and an extended position. Movement of the movable plate can be effected manually, or automatically by movement of the latches on the electronic circuit card assembly which latch the electronic circuit card assembly into an electronic circuit card housing.

Abstract: A faceplate cover includes a window to view circuit indicia. The window is transparent, and allows a user to view indicia which may be present on a receptacle or other device contained in an electrical box. The window is attached to the main panel of the faceplate cover. The faceplate cover and window may be injection molded separately and assembled, or formed utilizing a two shot process.

Abstract: A multi-port power monitor is provided which indicates whether power is being supplied to one or more of a plurality of ports connected to external devices. The multi-port power monitor comprises a plurality of serially connected indicators and a plurality of controllable switches which supply power to the individual indicators when one or more of the corresponding ports are active.

Abstract: An electrical box for mounting a ceiling fan or a light fixture in which the electrical box is the sole support for the fan or fixture. The electrical box has mounting holes on its sides for receiving fasteners for securing the electrical box directly to a joist, beam, or other structural support member. Preferably, the fasteners are nails to provide an easy installation. The electrical box has flanges with both fixture and fan mounting holes as well as holes for mounting a cover. A cover can be mounted directly to the electrical box. The cover can be the attaching element between the electrical box and the fan or fixture.

Abstract: A bicolor indicator is provided for a lighting control system which controllably switches one or more lkighting fixtures on or off in accordance with detected motion, ambient light level and a selected time out period. The indicator indicates when the lighting control system is operating in a bypass on or off mode (i.e., overriding controlled switching based on motion detection and ambient light level) or in an automatic time out mode. The indicator also indicates occurrences of motion detection and whether or not the ambient light level is exceeded.

Abstract: A low loss capacitive delivery system for converting a low voltage AC power source into a driving energy for a high voltage lamp is disclosed. The system involves delivering two energy loops with the first energy loop consisting of a high voltage low energy output to the lamp during a first half cycle of the AC power source operation and the second energy loop utilizing a high energy low voltage system delivering a high energy capacitive pulse to the lamp during a subsequent second half cycle operation of the power source. The first energy loop functions to lower the resistance of the lamp and the second energy loop operates the lamp after its resistance has been lowered. The system contains a matrix of diodes arranged in order to deliver the capacitive pulse of the second energy loop and to bypass the low energy high voltage circuit.

Abstract: A low profile communications outlet box is disclosed which can accommodate fiber optic cables in a compact housing without bending the fiber optic cables past their minimum bend radius. The outlet box has a base and a cover for forming a wiring space therebetween. A pair of winding rings or members are located between the base and cover to prevent the fiber optic cables from being bent beyond their minimum bend radius. The winding rings or members overlap each other to decrease the size of the outlet box. Moreover, the winding rings or members are offset from each other such that the upper winding member lies in a different plane from the lower winding member.

Abstract: A light fixture assembly includes a mounting plate, a ballast housing, and an adapter ring for attaching the ballast housing to the mounting plate. The adapter ring includes an annular body having opposite upper and lower annular portions and opposite exterior and interior sides. The upper annular portion has a continuous upper annular surface located between the opposite exterior and interior sides and adapted for sealably engaging the mounting plate. The lower annular portion has a continuous lower annular surface located between the opposite exterior and interior sides and adapted for sealably engaging the ballast housing. Upper and lower exterior fastening arrangements are provided on the adapter ring for removably securing the ballast housing to the mounting plate. The upper fastening arrangement is disposed on the upper annular portion of the annular body at the exterior side thereof and spaced outwardly from the continuous upper annular surface of the annular body.

Abstract: A tone generating circuit comprises a counter circuit having a clock input for receiving a clock signal and a plurality of outputs which generate sequential binary values in response to transitioning of the clock signal; a multiplexer having several inputs, a number of select lines connected to the counter circuit outputs, and at least one output; and a resistor divider network connected to the multiplexer inputs. The multiplexer select lines select one of the multiplexer inputs in accordance with the binary value received from the counter circuit. The multiplexer inputs are connected to different taps on the resistor divider network. The counter selects multiplexer inputs on the falling edge of the clock signal, while the output signal level transitions before the rising edge of the clock signal.

Abstract: A pulse discharge site location (PDSL) system is provided which captures pulses on a conductor without requiring the triggering functions of an oscilloscope. The PDSL system comprises a pulse discharge measurement (PDM) system and is programmed to store the data captured by the PDM system in a reference buffer corresponding in size to the propagation time of a pulse along the length of the conductor. Samples of the captured pulses are scanned to locate the peaks of pulses above a selected noise level. These pulses are stored into a temporary working buffer, along with a selected number of samples, normalized and then added to the reference buffer. The reference buffer provides a statistical average of pulse activity. Primary pulses and their second and higher order reflections, as well as transient interference pulses and radio frequency interference, are indicated at the beginning and end of the reference buffer.

Abstract: A system for selectively providing power from a power source to a load to operate in an area for at least one occupant comprising a processing device for controlling the opening and closing of a relay connected between the load and the power source for energizing the load, and a sensor for detecting the presence of an occupant in the area. The processing device is programmable to close the relay in response to an output signal from the sensor for a period of time that can be of fixed duration, or a duration that is dynamically and automatically determined using sensor data relating to measured time between successive, detected occupant movements. In addition to a daylight inhibit function, the system is provided with color indicators and a tone generator to indicate various operating conditions and to guide a user entering selected system parameters, among other features.