Abstract: A tap-off box includes a latch that automatically secures the tap-off box to a busway upon insertion of a mast into the busway. The latch is in the form of a single spring-loaded member that latches onto a rail as the masthead is pushed into the busway. A push button actuated camming member pushes the latch away from the rail to enable the masthead to be withdrawn from the busway. The push button and camming member are independent of the mechanism that extends and retracts the contacts while the masthead is inserted and latched into the busway. The tap-off box may also include non-contact current monitoring sensors with voltage sensing inserts that an auxiliary breaker switch in applications other than a tap-off box, and an infrared emitting faceplate that can be adapted for monitoring a variety of breakers from outside the tap-off box.

Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.

Abstract: A connector for installation on a grid having conductors therein and a method of installation therefore. The connector has a housing with at least one contact mounted in the housing which makes an electrical connection with the conductors of the grid when the connector is mated with the grid. At least one mounting member is movable between a first position in which a grid mounting section of the at least one mounting member is positioned in the housing and a second position in which the grid mounting section extends beyond a top surface of the housing to provide a mechanical connection between the grid and the connector.

Abstract: Embodiment relate to an extruded high power electrical distribution. The bus can be employed in a MCC, a drive cabinet, or any such electrical enclosure to facilitate transmission of power. A body of the bus includes an elongate metal extrusion with first and second ridges extending along a length of the body from opposite edges of the body. Further, the bus includes a first groove and a second groove extending along the length of the body and into the body from a face of the body such that each of the first and second grooves comprises a cross-section having a narrow passage extending from the face into a broader cavity within the body. Additionally, the bus includes machined openings into each groove, wherein each of the machined openings is wider than the width of the corresponding groove to which it provides access.

Abstract: An electrical connector includes a first connector module having at least one electrical contact and having a male mechanical connector and a second connector module having at least one electrical contact and having a female mechanical connector. The male mechanical connector and the female mechanical connector are arranged to connect the first connector module and the second connector module to one another. The male mechanical connector includes an alignment rail and a locking projection. The female mechanical connector includes an alignment slot and a locking channel. The alignment rail and the alignment slot are engaged with each other. The locking projection and the locking channel are engaged with each other.

Abstract: A projector light device includes two or more conductor bars received in a track, a pedestal slidably engaged in the track, two or more conductors secured in the pedestal and each having a flap engageable into the track for electrically contacting with the conductor bars. A projector light member is attached to the pedestal and electrically coupled to the conductors. An actuator device is rotatably received in the pedestal and has an actuator for forcing the flaps of the conductors to engage with the conductor bars when the actuator device is rotated relative to the pedestal.

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 track-lighting system of the present invention includes an electrically conductive track, a power supply being adapted to be mounted to the track at a desired position along the track to energize the track, and at least one lighting fixture adapted to be mounted to the track at a desired position along the track. The lighting fixture is independent of the power supply and is electrically connected to the power supply by the electrically conductive track to be powered by the power supply. The track, lighting fixtures and power supply are sized to be mounted beneath an elevated cabinet, such as a kitchen cabinet. The track, the power supply, and lighting fixture are therefore sized and shaped to be substantially flush with a bottom of the lip of the cabinet when the track lighting system is mounted to the cabinet. In one embodiment, the power supply is provided with a wire splice compartment which enables two or more power supplies to be electrically connected in parallel.

Abstract: The invention discloses an electrical plug and socket. The socket is an elongated body made of rigid non-conductive material with two or three grooves along its body. A conductor connected to a power source passes inside, along and through every groove. This socket has at least one "station" for insertion or removal of the plug which is located along said socket. The plug is comprised of e cover and a body both made from non-conductive rigid material. Two or three rigid conductive bodies are located at the underbody of the plug and connected to an electrical cable passing through the cover. Said conductive bodies are contoured and located such that they fit for entry, sliding and grasping of the socket's grooves while continuously touching the sockets conductors inside said grooves. The advantage of the particular feature of the plug end socket according to the invention is that it minimizes the risk o electrocution by preventing foreign bodies from being inserted and touching the electric conductors.

Abstract: An adapter for a contact rail having electrical conductors and grooves provided on opposite surfaces thereof including a housing including, two lateral legs forming a recess therebetween and moveable away from each other between an open and a closed position. Electrical contacts are provided in the housing at the opposite sides of the recess and positioned for engaging with electrical conductors of the contact rail with the contact rail placed between the legs in the closed positon. At least one of the lateral legs can be moved along a straight line into a closed position such that holding elements provided on the legs engage grooves on the contact rail and the electrical contacts engage the electrical conductors of the contact rail.

Abstract: A low-voltage light fixture to facilitate the insertion and removal of light bulbs, where the light bulb is inserted in a socket which is releasable secured to a carriage. The electrical contact to a pair of leads on the light bulb is made by a pair of acruate terminals fastened within the carriage. The terminals have one free end so that they may bend freely upon insertion of the socket within the carriage. The socket includes a depression configured to conform to the shape of the arcuate terminals, so that the terminals snap into the depression when the socket is inserted into the carriage. The leads extend acros the depression to improve the electrical contact. The socket is further secured to the carriage by a pair of grooves which mate to the carriage's guiding rails. The invention further comprises a retrofitting cover and spring-clip mechanism for holding such cover to the housing of the string-lighting system.

Abstract: The invention relates to a plug connector device for telecommunication and data systems, comprising a plug connector 1 and a connector bank 30. The connector bank 30 is formed of a housing with insulation displacement contacts 31 connected each to switching contacts 6. The plug connector 1 comprises a housing 2 with a connector tongue 4 supported therein and has contact tracks 5 on either side which can be inserted between two switching contacts 5 opposed to each other of the connector bank 30. The exterior distance B of two contact tracks 5 being smaller than the interior distance A between two stitching contacts 6.The plug connector 1 is provided such that there is no abrasion between the contact tracks 5 of the plug connector 1 and the switching contacts 5 of the connector bank 30 during the insert procedure. After the insert procedure, a contact connection with a sufficiently high contact force is established between the contact tracks 5 and the switching contacts 6.

Abstract: A wall structure for removably positioning panels and brackets is provided with a pair of electrical buses adapted to be contacted by an electrical clip at any one of a plurality of different heights.

Abstract: An electrical power track system includes an elongated tubular track carrying elongated electrical conductors internally thereof and having a relatively narrow longitudinally extending slot formed in the track to enable access to the conductors but inhibiting insertion of fingers and the like into the track. A gripper device is adapted for mounting on the track and has a thin fin-like extension adapted for insertion into the track slot. The gripper device carries descrete electrically conductive L-shaped contacts spaced along the fin-like extension for movement between retracted positions within the extension to enable insertion into the track slot, and extended positions engaging the track conductors when the gripper device is mounted on the track. An actuator carried by the gripper device enables selective movement of the contacts between their retracted and extended positions, and a locking member releasably secures the gripper device on the track.

Abstract: An adaptor for connecting a luminaire to a track receptacle is disclosed. The track receptacle has retaining flanges along its bottom edges and an insulator assembly adjacent the top. The insulator assembly mounts parallel electrical conductors in the top of the track receptacle and also defines parallel guide channels. The adaptor includes a body having a lid. The lid includes retainers for mating with the retaining flanges. A pair of spring biased electrical contacts extend upwardly from a contact housing mounted in the body and extending through the lid. The housing includes a pair of guide members which are rotationally biased to an aligned position for insertion into the track receptacle.