Abstract: A grommet assembly for wire harnesses comprises a main grommet unit having a thick large diameter tubular portion and a thin small diameter tubular portion and provided with an opening in the part of a flange thereof including the thick large diameter portion and an auxiliary grommet unit having a thick large diameter tubular portion and a thin small diameter tubular portion and adapted to be fitted into the opening of the main grommet unit. A main wire harness is put through the main grommet unit, while an auxiliary wire harness is put through the auxiliary grommet unit. A hard plate is embedded in the part of the flange confronting the outer periphery of the opening.

Abstract: A submersible splice assembly which provides a splice and a removable mating splice cover. The splice and splice cover are configured such that the splice cover is centered about the splice. The splice includes a centrally located rib extending about the splice and the splice cover includes a central recess which mates with the rib on the splice. An interference fit between the splice and splice cover is also provided.

Abstract: A method of producing a ceramic insulating bushing to be filed with dielectric gas under pressure and which is free from any risk of explosion, comprising the following operations:(1) manufacturing a ceramic bushing (10) having an inside surface which is conical over the entire length (L1) of the bushing;(2) making a conical sleeve (30) of strong insulating material, the sleeve having the same cone angle as the inside surface of the bushing and having a length (L2) which exceeds that of the bushing;(3) inserting the sleeve (30) into the bushing until it makes contact with the entire inside surface (20) of the bushing (10); and(4) cutting off the sleeve at the ends of the busing.

Abstract: An elongated electrically insulating support structure, for use by itself as an electrical insulator or for use as a strength member in a composite electrical insulator made of fiberglass-reinforced resin, comprising a central cylindrical body and ends having the shape of solids with surfaces of revolution with axial symmetry, having diameters larger than the diameter of the central cylindrical body, with which they are radiused without solution of continuity, i.e., connected without and discontinuity, wherein the central cylindrical body and the ends consist of superimposed and crossed layers of glass filament impregnated with thermosetting resin, wound around a cylindrical element with a helical winding angle smaller than 90.degree..

Abstract: An electrical insulating bushing and a method of fabrication with an electrical device having a cabinet with an outer wall and a bushing-receiving aperture in the wall. The bushing includes an elongated body surrounding a central conductor with an annular mounting flange at a mid portion of the insulator body. An interface collar is received in the aperture of the cabinet and is welded to the cabinet wall. Thereafter, the bushing is inserted in the interface collar and is joined thereto with an adhesive. A gasket ring is positioned between the bushing flange and the interface collar prior to the adhesive joinder thereof, so as to augment the fluid-tight seal therebetween.

Abstract: A stand-off device for supporting an energized conductor from a utility pole includes an elongated self-supporting stand-off body, a utility pole connecting arm extending from the elongated body at one end for connection to a utility pole, and an energized conductor contact arm fastened to an opposite end of the elongated body. When the utility pole connecting arm is mounted or connected to a utility pole, the energized conductor contact arm at the other end of the elongated body contacts and supports an energized conductor in a stand-off position from the utility pole.

Abstract: A grommet for sealing the clearance between a panel (P) and an electric cord (W) extending therethrough, the grommet having a locking portion (B) made of a hard resin including a lower part (9) having a center hole (9a), and upper annular wall (10) extending along the peripheral edge of the lower part (9), a base plate (11) provided at the top of the annular wall (10) and having a center hole (11a), and engaging tongues (12) provided on the annular wall (10); a soft portion (A) including an annular recess (6) fitted with the base plate (11) and a tube through which the electric cord is inserted; and electric cord fastening members (17) having stoppers (18) dimensioned so as to be prevented from passing through the holes (9a, 11a) of the lower part (9) and the base plate (11), the fastening members being secured to the cord so that the stoppers are located between the lower part (9) and the base plate (11).

Abstract: A curled electrical conductor cord is disclosed that comprises at least one core wire and a sheath layer covering the core wire, the core wire having at least one conductor covered with an insulating layer. The cord has a diameter of 1 mm or more, or has a cross-sectional area of 1 mm.sup.2 or more. The vertical stretch L.sub.0 of the curled portion of the cord by its own weight is 30% or less. The vertical stretch L.sub.50 of the curled portion of the cord under a load of 50 g is 200% or more.

Abstract: A duct assembly for enclosing conduits, cables, wires, lines and the like, comprising a base having a generally U-shaped cross section along its longitudinal axis, and a cover having a generally U-shaped cross section along its longitudinal axis. The base includes a generally planar central portion with first and second legs extending substantially perpendicular thereto. The cover includes an intermediate portion having third and fourth legs extending substantially perpendicular thereto. The cover is pivotally and releasably coupled to the base at one end and releasably coupled to the base at the other end. The pivotal and releasable coupling is made up and released via a snap fit resulting from forces exerted substantially perpendicular to the longitudinal axes of the cover and the base. The pivotal coupling allows angular movement of the cover relative to the base through about 45.degree. to about 60.degree..

Abstract: The insulator, preferably made of porcelain, is of the type comprising a lower bell-shaped portion, an intermediate annular, waist portion and an upper saddle portion for receiving and supporting an electric transmission overhead wire. The insulator is of the type having an axial blind bore opening at its lower end for receiving an upstanding support pin. The saddle portion includes a transversely-curved groove substantially normal to the axial bore and jutting parts on each side of the wire-receiving groove and laterally protruding from the waist portion. Each jutting part has an external face which is provided with a partly annular groove, generally coaxial with the bore and of greater radius than that of the waist portion. These annular grooves are adapted to positively retain the inturned flanges of a wire-retaining clamp despite an upward force or a laterally-upwardly-directed force exerted by the wire on the clamp. The waist portion can still be used for attaching the electric wire by a tie-wire.

Abstract: A hermetic, leak-proof, corrosion resistant electrical feedthrough especially for use with implantable pulse generators. The feedthrough includes a titanium or niobium ferrule, an alumina insulator with a niobium braze area thereon positioned within the ferrule and sealed to the ferrule by a braze of gold at the braze area, electrical lead wires of niobium, tantalum, tungsten, molybdenum or alloys thereof extending through corresponding openings in the insulator, and a body of fusible glass joining and sealing each lead wire to the insulator.

Abstract: A conductive spacer (1) comprises a spacing member (4) and upper and lower fixing members (7,8) to secure upper and lower boards (5,6) a certain distance apart. The upper and lower fixing members (7,8) include upper and lower supporting members (9, 17a,17b) for pressing against the inner surfaces of the upper and lower boards (5,6), and upper and lower locking members (12a,12b,19a,19b) extending from the center of the upper and lower supporting members (9,17a,17b) for passing through holes (34,35) in the upper and lower boards (5,6), resiliently expanding outward, and for securing outer surfaces of the upper and lower boards (5,6). The upper and lower fixing members (7,8) and the upper and lower locking members (12a,12b,19a,19b) thus support the boards (5,6). One end of a conductive member (3) is attached to the lower supporting members (17a,17b) on the lower board (6 ), and the other end of the conductive member (3) extends to contact the upper board (5).

Abstract: Mounting and retaining apparatus for electrical, optical, or fluid conductors has a pair of resilient top members cantilevered from relatively rigid vertical sidewalls which are attached to a relatively rigid horizontal base member. The apparatus defines a rectangular channel in which the conductors are housed. The apparatus is adapted to allow conductors to be easily inserted into or removed from the channel via a one-hand operation. Insertion is accomplished by placing a conductor over the top members and pushing down on them so as to cause an opening between the top members which is sufficient to allow the conductors to enter the channel. The resilient top members may overlap to hide the conductors retained in the channel or they may be spaced apart.

Abstract: An electric busway system consists of a plurality of planar bus bars insulated from each other and bolted together for good mechanical strength and for efficient thermal conductivity. The bus bars are additionally perforated to promote convective air current flow through the perforations when the bus bars are mounted in the horizontal plane.

Abstract: A wire channel bushing mountable between two electrical enclosure boxes. The bushing provides a rain-tight channel for wires passing between the boxes and also provides reliable grounding paths for grounding one box to the other.

Abstract: An apparatus, for attachment to an equipment frame, organizes the cables associated with each interface circuit card of the equipment. The apparatus includes a sheet metal panel having an upper slotted flange and a lower cable channel each extending along its length, giving the panel a J-shaped cross-section, and a plurality of resilient wire cable retaining members. For each group of cables, a resilient wire member is provided having a U-shaped base, substantially parallel arms and an openable gap formed by fingers projecting from the arms. The U-shaped base of the wire member is inserted into the slot corresponding to the circuit card for which the cables are to be grouped. The wire member is retained in the slot by a plurality of resilient tabs fromed on the panel. The form of the fingers is selected to facilitate insertion and extraction of the cables between cable retaining arms and to ensure retention of the cables once inserted.

Abstract: A high capacitance cable is described which avoids instantaneous voltage drops. The cable is very useful in connecting electrical components (e.g., connecting integrated circuit chips to power supplies). The cable includes: (a) a central continuous strip which is electrically insulating, (b) spaced-apart conductors carried on the upper surface of the strip, and (c) spaced-apart conductors carried on the lower surface of the strip. The cable can be surrounded by electrical insulation, and it preferably is a flexible cable.

Abstract: A water-tight structure for a multicore cable includes a sealed vessel in which electrical components are arranged, and a grommet having an insertion hole disposed at a multicore cable lead portion of the sealed vessel. The multicore cable is held in the insertion hole of the grommet and has a solder-dipped portion in the grommet which has been bent, a portion of the solder-dipped portion being covered with a metal sleeve.

Abstract: A sealing element is provided for use on insulated flat cables of the type having opposed rounded minor surfaces and opposed substantially flat parallel major surfaces which comprises an elongated body of resilient material having an orifice extending longitudinally within said body. The orifice has a width greater than its height. Opposed involute walls extend within said orifice substantially along the width of the orifice whereby the involute walls stretch and conform to the opposed substantially flat parallel major surfaces of the flat cable when placed thereon, thus providing a secure, watertight interference fit. Depending upon usage, the orifice may extend through the body or terminate within the body. Additionally, it is preferred that sealing rings be formed in the inner wall of the orifice.

Abstract: The multi-purpose apparatus for distributing wires mainly comprises a strip member having at one lateral wall a longituidnal opening with flanges respectively formed on opposite edges thereof, and a plurality of single units each having along its length a pair of longitudinal grooves respectively being located at opposite edges of the unit and corresponding to the longitudinal flanges of the strip member such that each single unit can be detachably secured to the strip member by forcing the flanges thereof into the corresponding grooves thereof. Those single units include decorative plate assemblies, electrical socket assemblies, switch assemblies and other terminals such as telephone wire junction box, antenna socket, speaker wire socket, and signal wire socket. The strip member further is provided along its upper and lower edges with a pair of wire receiving chambers in which power wires and ground wires including signal wires are respectively received.