Abstract: A polymeric interlocking tile for an adhesive-free assemblage with adjacent tiles having substantially similar, but inverted, edge interlocks thereon. The interlocks on each edge of a tile include a row of first and second sets of male-female types of alternating interlocks. The first interlock set includes a male lug projection having sidewalls forming one sidewall of a channel of U-shaped cross-section. The channel forms a female interlock cavity for the first set. The second interlock set is contiguous to the first set and includes a male projecting rib having two parallel sidewalls, one sidewall faces the edge and forms an opposite sidewall of the channel and an opposite, inwardly facing sidewall forms an enclosure for a second female cavity of the next set. At the opposite ends of each interlock row, the U-shaped channel sidewalls are wider to facilitate an initial interlock meshing between contiguous tiles of the assemblage.

Abstract: A polymeric interlocking tile for an adhesive-free assemblage with adjacent tiles having substantially similar, but inverted, edge interlocks thereon. The interlocks on each edge of a tile include a row of first and second sets of male-female types of alternating interlocks. The first interlock set includes a male lug projection having sidewalls forming one sidewall of a channel of U-shaped cross-section. The channel forms a female interlock cavity for the first set. The second interlock set is contiguous to the first set and includes a male projecting rib having two parallel sidewalls, one sidewall faces the edge and forms an opposite sidewall of the channel and an opposite, inwardly facing sidewall forms an enclosure for a second female cavity of the next set. At the opposite ends of each interlock row, the U-shaped channel sidewalls are wider to facilitate an initial interlock meshing between contiguous tiles of the assemblage.

Abstract: A polymeric interlocking tile for an adhesive-free assemblage with adjacent tiles having substantially similar, but inverted, edge interlocks thereon. The interlocks on each edge of a tile include a row of first and second sets of male-female types of alternating interlocks. The first interlock set includes a male lug projection having sidewalls forming one sidewall of a channel of U-shaped cross-section. The channel forms a female interlock cavity for the first set. The second interlock set is contiguous to the first set and includes a male projecting rib having two parallel sidewalls, one sidewall faces the edge and forms an opposite sidewall of the channel and an opposite, inwardly facing sidewall forms an enclosure for a second female cavity of the next set. At the opposite ends of each interlock row, the U-shaped channel sidewalls are wider to facilitate an initial interlock meshing between contiguous tiles of the assemblage.

Abstract: A plastic standoff block having a substantially H-shape cross-section that is used for mounting a guardrail barrier to a vertical support post. The standoff block has horizontally disposed dual compression-resisting zones comprised of two back-to-back cavitated block modules joined by a common vertically disposed support base. In accordance with one embodiment, the support base extends outwardly from the modules to form a peripheral shoulder for a plurality of elongated horizontally disposed struts that buttress the modules against transverse buckling.

Abstract: An apparatus and method for automatically selecting an amount of build-out capacitance to be applied to a hybrid in a telecommunications circuit to balance or substantially balance the hybrid. The apparatus measures voltages of signals being transmitted on telecommunication lines to which the hybrid is coupled, and based on the measured voltages, automatically selects any number of a plurality of capacitive elements to be coupled to the balance port of the hybrid as the build-out capacitance. The apparatus is further controllable to operate in a manual mode in which the capacitive elements to be coupled to the hybrid are manually selected by switches.

Abstract: An integrated digital loop carrier (IDLC) system includes digital line feeders and signal processors to interface with the feeders and to ultimately provide data to subscriber instruments. The system can be employed as a central office terminal (COT) or remote digital terminal (RDT) with analog, T1 or SONET feeders and any conventional link medium. Data are put in DS1 format and multiplexed onto token ring optical loops for delivery to banks of channel units wherein the optical signals are translated to electrical signals for delivery to the CUs and subscribers. A method and apparatus is provided for mapping and demapping signals between virtual tributaries (VT) and digital signal formats in the RDT of an integrated digital loop carrier.

Abstract: A universal multifunction sensor having multiple optical designs and providing a plurality of parameter sensors in one sensor module which can interface with and control operation of one or more processor control systems in an occupied space networked environment. The universal multifunction sensor comprises a passive infrared occupancy sensor and an ambient light sensor. A common network communications and control processor coupled to a common communication transceiver are shared in common by the occupancy sensor and the ambient light sensor, such that the multifunction sensor can interface with and control operation of one or more processor control systems in an occupied space networked environment.

Abstract: A partial discharge measurement system is provided which comprises a digital peak detection circuit. The partial discharge measurement system digitizes and detects both positive and negative slopes of a signal from an electrical device being tested. The partial discharge measurement system controls the shape of pulse capture windows in accordance with different modes of operation, and controls the timing of pulse data capture depending on the mode of operation and the polarity of the signal.

Abstract: A voltage measurement system is provided which concurrently measures peak voltage and root mean square voltage. The voltage measurement system employs a digital peak detection circuit for peak voltage measurement. The voltage measurement system employs a memory device for storing samples of a voltage signal at predetermined intervals corresponding to a line frequency multiplication factor. The samples in the memory device are then used to calculate root mean square voltage.

Abstract: A breakdown voltage measurement system is provided which employs a digital peak detection circuit for peak voltage measurement. The breakdown voltage measurement system employs a voltage memory device for storing successive peak values obtained from the digital peak detection circuit. The breakdown voltage measurement system is programmable to commence searching of stored peak values following breakdown of a sample electrical device being tested to determine a voltage measurement immediately before the breakdown occurred.

Abstract: An insulator having a torque-resistant or torque-prevailing crimped insulator end fitting; including a method of crimping the insulator end fitting so as to be resistant to torque tending to loosen mounting bolt connections of the insulator. A fiberglass core is located in the insulator and protrudes from the opposite ends of the insulator, and has end fittings seated thereon in close interference engagement, by mounting the insulator through intermediary of the end fittings being attached to power devices by threaded bolts extending from the devices being engaged in the tapped bolt holes. Radially inwardly directed crimping forces are applied to the cylindrical wall structure of the end fittings intermediate the locations of the bosses having the bolts tightened within the threaded bolt holes, and thereby produce a bolt-locking deformation of the bolt holes.

Abstract: A quick disconnect cable connector device includes an elongated body made of a rigid molded material and having opposite first and second ends, and a strain relief structure integrally connected to the first end of the body and made of the same molded material. The body can have a conical-shaped configuration tapering from the second to the first end. The body defines an interior chamber extending between and open at the first and second ends and receiving an end of a cable therethrough from the first to the second end such that the body provides an overmold encasing the end of the cable and supporting at the second end of the body a contact termination on the end of the cable. The strain relief structure includes a framework having an annular shape and forming a passage extending along a longitudinal axis of the framework and aligned with the first end of the body. The framework surrounds and receives through its passage a portion of the cable extending from the first end of the body.

Abstract: A modular cable management panel assembly includes a panel, a set of rings mounted on a surface of the panel and a cover coupled to the rings. The rings are spaced along the panel longitudinal axis and have openings extending laterally through them. The cover is movable between a closed position extending over and closing the ring openings and an open position spaced from the ring openings to allow cables to pass laterally into and out of the rings. The panel assembly is adaptable for mounting various accessories.

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 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 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 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 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.