Abstract: An enclosure for an electrical terminal block includes a housing having a back wall and projecting side walls extending thereabout to form a bounded chamber. One side wall includes an opening formed therethrough for permitting passage of an electrical cable into the bounded chamber. A barrier member is supported by the side wall adjacent the opening. The barrier member includes a barrier wall at least partially surrounding the opening about a periphery thereof. The barrier member includes a pair of elongate oppositely directed deflectable fingers projecting inwardly from the barrier wall. Distal ends of the fingers include slitted portions thereat for engaging and deforming around the electrical cable upon passage thereof through an opening in the side wall.

Abstract: An adapter box having a base structure that has an annular sealing ridge on the cover side and with a cover that has a sealing effect with an annular sealing strip in conjunction with the sealing ridge. The technical problem is complete sealing of the adapter box in the area of the cover and of a connector so that jet-proofing is attained. The sealing strip (54) has a trough-shaped section (35) overlapping the sealing ridge (7), and the sealing ridge (7) has two tongues (32) separated by a gap (33). Each window (11) formed as a cutout in a wall (3) has a contour consisting of straight sections (12) and centric arc sections (13) with the same radius, which together form in each case a one nth partial arc, with n=3, 4 . . . , of the full arc. The collar (18) of the sealing flange has an external contour identical with the contour of the window (11).

Abstract: An enclosure providing an evacuated region about an array of microelectronic vacuum devices including a substrate, a first encapsulation member defining a cavity, a second encapsulation member defining a cavity and mating with the first encapsulation member so as to define an encapsulated region, a ledge formed in the first encapsulation member for supporting the substrate and defining a communicating passage between the cavities and a sealing agent disposed between the mating surfaces of the encapsulation members to effect a vacuum seal such that when the encapsulated region is evacuated it will be at the same vacuum levels throughout to eliminate differential pressure induced deformation of the substrate. The evacuated substrate enclosure further provides for assembly without an evacuated environment.

Abstract: Apparatus for protecting from water damage the electric motor which drives the cog rake bar screen of a waste water treatment plant. A shell of air impermeable material surrounds the motor and has an opening at the shell bottom to drain water. Various arrangements and devices prevent water or debris from entering the opening.

Abstract: A combination electrical wall terminal incorporating a communication receptacle and an electric power device such as a convenience power receptacle, a line switch or the like. The electrical wall terminal comprises a junction box for installation in a hollow wall structure, the junction box defining a housing for the electric power device and includes a pair of laterally projecting and vertically spaced apart support flanges mounted to a side wall of the housing. In addition, the electrical wall terminal comprises a wall plate retained to the support flanges, provided with an aperture facing the junction box housing to receive the power device and includes a communication receptacle that fits between the support flanges of the junction box. The invention also extends to a side plate to adapt a conventional knockdown electrical junction box for use in a combination electrical wall terminal according to the invention.

Abstract: A flexible wiring system is disclosed for use with elevated floor systems and includes a grounding member which can be placed against, and mounted to, a metallic plate which forms a part of the elevated floor. An electrical receptacle is mounted to the grounding member for surface application of the receptacle on the floor. An electrical conduit is connected to the grounding member at one end and to an electrical connector at the other end. The electrical connector is flexibly movable in order to interconnect with other mating electrical connectors to perfect electrical continuity within the electrical system.

Abstract: A device for retaining an electrical junction box in flush relationship with a wall or a ceiling has a thin elongate strap. The ends of the strap are longitudinally bifurcated to provide fingers to be deformed around the edges of the box as well as the outer wall surface. Wings extending out from a side edge of the strap are used to provide support against the inner wall surface.

Abstract: An improvement is disclosed for a cabinet housing separate arrays of terminals connected to one end of leads in wire harnesses, the other end of such harness leads being connected through splices to insulated wire leads in field cables running to such cabinet and respective to such arrays. The leads in separate of such cables are electrically coupled by connections including such splices, harness leads and terminals and completed by jumper leads bridging terminals in separate of such arrays. The improvement constitutes providing on the back side of the cabinet a plurality of splice chambers each respective to one of the terminal arrays and one of the cables, placing in each splice chamber the splices of the harness leads for the corresponding terminal array and the wire leads of the corresponding cable, and filling such chamber with a body of material which encapsulates the assembly of such splices and adjacent lengths of such leads.

Abstract: A poke-through wiring device for mounting in a bore opening through a concrete floor slab includes individual tubes for through-floor passage of power supply and data/communication conductors, an intumescent barrier for sealing the bore, and an above-floor service fitting having a main frame including a bottom wall having spaced apart power supply and low voltage data/communication openings therethrough. A pair of opposing sidewalls extend upwardly from the bottom wall and each defines a plurality of receptacle openings. A unitary receptacle barrier mounted on and cooperating with the frame isolates the power supply opening, at least one receptacle opening in one of the sidewalls and at least two of the receptacle openings in the other of the sidewalls from the data/communication opening. An auxiliary frame may be connected to the main frame to increase the number of available receptacle openings.

Abstract: A shielded cable passes through a kickpipe in a structural plate member, h as the deck of a ship. The kickpipe has a necked-down portion designed to receive the cable at a point where the cable shielding has been exposed. Axially compressible radially expandable iris, or toroidal, springs are engaged by an adapter nut threadably received inside the kickpipe to create a low impedance ground connection from the cable shielding to the deck. The adapter nut has a cavity for receiving a packing material and a gland nut is received in the adapter cavity to seal the ground connection from the environment.

Abstract: A compartment module for a metal-enclosed, modular medium-voltage distribution system has an essentially box-type construction and includes a first set of mutually opposite completely closed walls, a second set of mutually opposite walls having identical large openings bounded by a narrow flange, and a third set of mutually opposite walls having small openings bounded by a wide flange. When assembled, a number of the modules can be arranged to face one another with similar walls and the remaining openings closed off by a cover. The modules can be mechanically coupled to each other by bolt joints or clamp joints in order to obtain a mechanical and electromagnetic seal. A method of manufacturing a module from sheet metal, and a method of manufacturing a medium-voltage distribution system from standard modules includes using isolators and busbar systems.

Abstract: A flush-mounted appliance outlet for a combination unit to be used in wiring practice, and having several types of components such as operating controls or junctions. The flush-mounted appliance outlet is constructed such that each receptacle is held on a mounting bracket in an outlet box. The mounting brackets are adapted to be covered by a common cover plate. The inside width of the cover plate that is used for mounting fields of components, such as a receptacle, used in building wiring systems, is constructed wider than that the dimensions of the outer profile of the mounting bracket for such a component.

Abstract: A modular type receptacle unit useful as an electrical outlet having only two components offering quick connect/disconnect features between the outlet box and cover plate unit. The outlet box and coverplate unit can be assembled together without need for screw fasteners and tools.

Abstract: A face plate for blind mounting a switch or other device to either a bracket or a wall including an anchor carried by the face plate operable upon rotation in one direction to pull the face plate against the edges of the hole defined in the wall or bracket, whereby to clamp such face plate to the wall or bracket, and operable upon rotation in an opposite direction to release the clamping of the face plate and permit removal of the face plate and device from the wall.

Abstract: Electrical insulation apparatus namely a water resistant gland for the protected connection at an electrical cable. The gland is shaped for location around an electrical cable and includes a moisture impervious outer body and a pair of annular grommets located within the outer body. The grommets are arranged to contact and surround the cable. The grommets are of resilient material such as neoprene and include steel plates of annular construction located at either end of the neoprene body. A mechanism is provided to force the grommets into contact either with each other or with a cable protective armoring portion located between the grommets.

Abstract: A poke-through fire barrier with knock-out fire barrier openings. The structure includes a fire barrier element which is constituted from an intumescent material in the shape of a disc member which is adapted to be installed in a passage or opening formed in a fire-rated floor, and wherein the intumescent disc member incorporates one or more knock-outs for the passage therethrough of insulated conductors or wires.

Abstract: A safety cover for an electric receptacle has a mounting plate fitting over an electrical receptacle, and a cover assembly with a cover edge extending around the periphery thereof, the mounting plate having an edge engagable surface thereon corresponding in shape to the cover edge. The cover assembly is mountable on the mounting plate 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 receiving apertures in the mounting plate structure and the cover edge is snugly abutted against the edge engagable surface.

Abstract: An electrical junction box is generally cylindrical, and has terminals on the peripheral surface. The box is divided into a plurality of layers, each layer being one polarity, so polarized wires can be easily plugged into the appropriate terminals. A cover may be used over the box if desired, the cover being fixable to the box. Also, the cables to be connected in the box may be fixed with respect to the box. Each terminal has a release slot adjacent to it so wires can be removed as desired. Each layer has a connector that electrically connects all terminals in that layer.

Abstract: An electrical apparatus cover plate which has an enclosing base plate (20) mounted on a wall over electrical apparatus, such as toggle switches or convenience outlets. A slideable member, including a toggle actuator bar (42), nests within the plate and interfaces with the electrical switch toggle lever. A cap (26) covers and retains the bar which is longer than the base plate permitting the switch to be actuated by pushing the bar in a vertical direction transferring the movement to the switch. In another embodiment, the slideable member is a protective shield (50) that is retained through a dovetail arrangement provided in the base plate and covers a convenience outlet for protection also allowing the shield to be slid upward exposing the outlet and permitting an electrical plug to be inserted, also maintaining the uncovered position while in continued use.

Abstract: An electrical junction box for supplying electrical power to a multiplexer or other device used in an underfloor cable distribution system is mounted remotely from a trench used to feed electrical cables to the system in order to increase trench capacity.