Abstract: A vernier ratchet-type lens adjuster for use with a lens array allows for fine adjustment of the coverage pattern of a sensor. The lens array can have notches, or teeth, that interact with a single tooth, or pawl, of a lens adjuster unit to maintain the position of the lens array. A user can make fine adjustments to the coverage pattern of the sensor by moving the lens array small increments. Alternatively, a rack and pinion type vernier adjuster can be used. One edge of the lens array has notches, forming the teeth of a rack portion. A pinion, or gear, has compatible teeth for mating with the rack portion. The pinion has a knob or screw accessible from a port in the sensor housing. When assembled, the rack, pinion and lens array are mated. A user can adjust the coverage pattern of the lens array by rotating the pinion, which in turn moves the rack, or the lens array, along a predetermined path.

Abstract: A multiport assembly has an electrical circuit board that floats within an enclosure assembly, thereby reducing the tolerance variation and providing a multiport assembly that is easy to assemble. The enclosure assembly has a first housing cover that has a first plurality of recesses and a second housing cover that has a second plurality of recesses. The second housing cover mates with the first housing cover, thereby creating the enclosure assembly. A plurality of openings are formed in the enclosure assembly by the alignment of the first plurality of recesses with the second plurality of recesses when the first and second housing covers are mated. Brass shells are connected to the electrical circuit board that is disposed within the enclosure assembly. Each shell extends through one of the plurality of openings in the enclosure assembly for supporting the electrical circuit board in a position spaced from the enclosure assembly so that the electrical circuit board floats within the enclosure assembly.

Abstract: A multifunction adapter for use in a motion sensor module holds a lens at the front of the adapter in a predetermined position and distance relative to a sensor mounted on a circuit board, and uses positioning projections at the rear of the adapter to set a predetermined distance of the adapter from the sensor and the circuit board. The adapter can be adjusted to set the focal point of the lens at an optimized position for the sensor. Additionally, a cover that shrouds the sensor is present on the rear side of the adapter for reducing or eliminating air flowing across and around the sensor. When the sensor is a passive infrared device, the reduction in air flowing around and across the sensor reduces the number of false signals.

Abstract: A housing for an electrical device including opposed supports or ribs receiving thereon a circuit board having first and second sides separated by a width “a”. A first board support is attached to the housing and has a first side surface, a first support surface substantially perpendicular to the first side surface for supporting the circuit board, and a first recess in the first support surface. A second board support is attached to an opposing side surface of the housing. The side surfaces of the board supports are separated by a distance “b”. When distance “a” is greater than distance “b”, the circuit board is retained in an interference fit. Scrapings that are formed during the insertion of the circuit board into the housing can be collected in the support recesses, which provide relief areas, to avoid interfering with the proper seating of the circuit board on the board supports.

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: An arrangement for mounting a unit incorporating a lighting control motion switch therein to either a wall or to a ceiling. Disclosed is the mounting of a unit housing the lighting control motion switch to either a wall or ceiling through the intermediary of a novel clip-on mounting bracket, subsequent to securing the clip-on bracket to the wall or ceiling. In order to provide the novel mounting arrangement for readily mounting the entire unit to either a ceiling or to a wall, there is provided the clip-on bracket structure which includes an inverted U-shaped element adapted to be inserted through a recess formed in the back of the back housing portion and to pass upwardly through an aperture in the upper end of the recess into contact with the inner surface of the rear wall thereof.

Abstract: An electrical receptacle assembly includes a housing and a mounting bridge. The housing includes front and back covers adapted to mate together. The front cover has opposite forward and rearward sides and opposite top and bottom ends, and the back cover has opposite forward and rearward sides and top and bottom ends. The forward side of the front cover is a wall covering the same whereas the rearward side of the front cover is open. The forward side of the back cover is open whereas the rearward side of the back cover is a wall covering the same. The open forward side of the back cover is adapted to interfit with the open rearward side of front cover to provide them in a mated relationship with one another.

Abstract: A finger guard for use with an electronic device is provided for restricting physical access to a component of the electronic device having an uninsulated surface adapted to carry a voltage. The apparatus includes a housing which defines a first opening and which is adapted to mount to the electronic device so that the first opening permits passage of passive infrared energy and ambient light to the component. The apparatus further includes a projection arrangement, extending from the housing, which limits physical access to the surface of the component through the first opening, and defining a second opening through which the infrared energy can enter and pass through the first opening to the component. An electronic circuit can also be provided which limits current being provided to an uninsulated component, such as an infrared or ambient light detector of the electronic device, from a circuit of the electronic device.

Abstract: An arrangement for accurately positioning a spring arm of a contact element on a mating component, such as a printed circuit board. More particularly, disclosed is an electrical contact spring arm which incorporates structure for accurately positioning the electrical contact element spring arm structure in slots formed in a printed circuit board or suitable support in a rapid and highly accurately positioned automatic manner.

Abstract: A strain relief arrangement for electrical wires or cables and, more particularly, an electrical receptacle or housing incorporating an integral strain relief arrangement for electrical transmission cables or wires. The electrical receptacle has a rear wall structure including holes or apertures for the passage therethrough of electrical wires or cables, and in which each of the holes possesses a configuration adapted to incorporate a strain relief arrangement for the electrical wires or cables.

Abstract: A ground fault circuit interrupter (GFCI) line cord plug utilizes an electronically latched relay, rather than a circuit breaker or other type of mechanical latching device, to interrupt the AC load power when a ground fault condition occurs. In order to reduce the size of the relay and minimize the cost and complexity of the GFCI plug, the fixed and movable relay contact structures are mounted directly to the circuit board which carries the remaining components of the GFCI circuit. In a preferred embodiment, the fixed relay contact structures are integral with the plug blades of the GFCI plug. The movable relay contact structures preferably comprise deflectable spring arms which are preloaded when the relay contacts are in the open position in order to control the contact gap, and which are deflected past the point of contact closure when the relay contacts are in the closed position in order to increase the closing force.

Abstract: An electrical receptacle assembly with an enhanced heat dissipation arrangement includes a housing having a front side with plug contact receiving openings and a rear side spaced from the front side, a circuitboard mounted in the housing between the front and rear sides thereof and spaced from the rear side, a plurality of varistors mounted to the circuitboard and disposed between the circuitboard and the rear side of the housing, and a mounting bridge fitted over the exteriors of the rear side and top and bottom ends of the housing for mounting the housing to an outlet box and providing a heat sink for dissipating from the housing heat generated by the varistors. The varistors are mounted to the circuitboard in the housing on the front side thereof opposite to the rear side where the electrical components are mounted to the circuitboard.

Abstract: An electrical receptacle assembly, such as for employment in a surge suppression unit, includes a generally rectangular two-piece housing having a front cover and a back cover separate from and mateable with the front cover, a generally U-shaped mounting bridge fitted over opposite top and bottom portions of the mated front and back covers, and a plurality of pairs of securement elements respectively defined on opposite top and bottom portions of the front and back covers and on opposite portions of the mounting bridge being disposed adjacent to the opposite top and bottom portions of the front and back covers. Selected ones of the pairs of securement elements on the front and back covers are interference fittable and latchable with selected ones of the pairs of securement elements on the mounting bridge for releasably securing the mated front and back covers to the mounting bridge.

Abstract: A compression seal assembly includes an elongated annular wall defining a passageway in a housing of a device, a push button disposed in the passageway, and an annular flange flexibly attached to the push button and compressed by the annular wall against a stationary wall to define a hermetic seal surrounding the push button. The annular wall has an outer end connected to an annular portion on the housing which defines an opening which is axially aligned with the passageway of the annular wall. The annular wall has an inner end which is spaced through a predetermined distance from a surface in the interior cavity of the housing. The push button has a body portion extending through the passageway of the annular wall and being movable relative thereto. The body portion of the push button has an upper end disposed adjacent to the housing opening and a lower end disposed adjacent to and spaced from the surface in the interior cavity of the housing.