Abstract: A fusible flame retardant sealant composition comprised of a homogeneous mixture of polyvinylidene fluoride, methacrylate polymer, and antimony oxide is disclosed. In the preferred embodiment, the sealant composition also contains zinc oxide. The sealant composition as disclosed herein is used to make fusible sealant inserts for preinsulated electrical connectors having a heat recoverable sleeve. The connectors are essentially comprising a conductor connecting means positioned within the heat recoverable sleeve, the conductor connecting means being designed to receive and electrically connect two or more electrical conducting members, the members being inserted from the ends of the sleeve, and one fusible sealant insert member made of said composition positioned near each one of the open ends of the sleeve.

Abstract: A filling piece or plug of plastic sealing material for sealing the gore spaces between the cables of a cable fitting consisting of shrinkable material is provided wherein the filling piece is specifically dimensioned relative to the diameter of the cables, has a rectangular cross-section and has a swelling and subsiding longitudinal expanse. The plastic sealing material can be surrounded by a tensile band or ring to support the sealing compound.

Abstract: The structure and process for providing a sealed insulated piping arrangement by introducing a molten sealing material between the inner fluid conducting pipe, and an outer casing, which space may include monitoring wires. The sealing material is introduced in a molten state to provide a liquid-impermeable filling, and then providing an enclosing seal at the end with a smooth transition for passage of the monitoring wires.

Abstract: An article comprises two areas of heat-recoverable woven fabric which are joined together along a line by means of a mechanical joining arrangement, such as stitches, staples or a stitched or stapled zip, which penetrates the fabric. The direction of crimp of the area penetrated is substantially perpendicular to the line of the join, or the two areas have substantially parallel directions of crimp.

Abstract: An electric cable sealing end in which the insulator which screws into a sealing box part and the box part distal end have rings therebetween with facing, complementary, engageable saw teeth. One ring is rotatable by the insulator and the other ring is held stationary by the box part. When the insulator is tightened, the saw teeth permit rotation thereof but after tightening, the saw teeth prevent rotation of the insulator in the loosening direction unless one of the rings is intentionally broken and removed.

Abstract: Termination apparatus for elongate heaters which have an outer metal sheath and which are designed for use in hazardous environments. The apparatus comprises a junction box within which the heater is terminated and which has an entry port through which the heater enters the junction box. Secured to the entry port is a connection member comprising first and second compression members which surround a heater passing through the entry port and which define between them a chamber. Within the chamber is a grommet which is composed of lead or another deformable metal. The compression members can be drawn together, thus reducing the size of the chamber between them and deforming the grommet into close conformity with the metal sheath of the heater. In this way, if flames are generated within the junction box, they cannot ignite explosive gases surrounding the junction box.

Abstract: A method of making a wire reference electrode in an electrolytic cell is provided wherein the wire reference electrode comprises a lead-in wire portion, a reference wire portion, a sealing material to seal the junction of the lead-in and wire reference portions, and a heat shrinkable insulating material which is heated for a predetermined period of time to collapse the heat shrinkable insulating material about the sealing material.

Abstract: A wire reference electrode and a method of employing the wire reference in an electrolytic cell is provided wherein the wire reference electrode comprises a lead-in wire portion, a reference wire portion, a sealing material to seal the junction of the lead-in and wire reference portions, and a heat shrinkable insulating material.

Abstract: An end terminal is provided for an underwater electrical cable and has a booted seal and a foam-filled area between the seal and the outer structural boot.

Abstract: The present invention relates to a device for sealing an electrical conduit comprising a tubular portion having a closed end and an open end. The device is formed of a resilient material. The closed end is adapted to have a wire or cable sealingly received therethrough. The outer surface of the tubular portion is of a diameter such that upon insertion of the tubular portion into the conduit, the outer surface of the tubular portion sealingly engages the inner surface of the conduit.

Abstract: A sleeve for protecting cable splices against environmental moisture and aggressive fluids comprises two half-shells having flanges which are placed against each other in the assembled position. In this position, the adjacent flanges define a duct into which sealing material in the form of paste is introduced. The opposite ends of the sleeve are provided with jaws which are clamped against the cable at the time of assembly of the two half-shells. Two jaws define between them a chamber which communicates with the sealing duct by means of a channel formed around the entire periphery of a jaw which is adjacent to the chamber, the channel being located at the bottom of the recess in which the jaw is fitted.

Abstract: A method and composition for effecting splices of high voltage cable sections for use with a mold placed around the cable sections. The composition comprises a liquid polyolefin, a finely divided solid polyolefin and a chain extension agent capable of reacting to form addition polymer linkages with the liquid polyolefin.

Abstract: A heat-recoverable sleeve for enclosing splices or joints in pressurized cables or supply lines is given increased resistance to peeling away from the cable or line by insertion of auxiliary means, preferably a U- or V-shaped flexible strip, which may be heat-recoverable, between the sleeve and the cable or supply line. The ends of the strip are preferably closed and are preferably overlapped and bonded to each other when the strip is placed around the cable or supply line. A release foil may be positioned inside the U- or V-shape of the strip to resist bonding together of the opposed arms thereof, and the foil may carry adhesive to bond it to one of the arms and may protrude beyond the ends of the arms so that the foil adhesive can help to locate the strip on the cable or supply line.

Abstract: Disclosed is a conduit sealing connector that may be made from metal or a heat stable polymeric material that is adapted to secure at least two conduits together that also may be made from a metallic or heat stable polymeric material. The connector is provided with a sleeve having a chamber therewithin containing an expandable material which upon heating the connector after is is secured to the conduits is able to expand and engulf any electrical conductors and/or cables extending through the connector between the conduits and fill the chamber sufficiently to provide a barrier against the flow of vapor through the conduits.

Abstract: A connector for electric cables used in a hydraulic control system of an automatic transmission includes a sealing member comprising a cylindrical sealing outer cylinder adapted to be fixed in a hole formed in the housing of the hydraulic control system and a sealing partition member having a short cylinder of a small diameter and a plurality of partition walls extending radially from the short cylinder, and two rubber bushings. The free ends of Teflon coated cables, are pulled out through the hole in the housing and are passed through through holes, respectively, of a rubber bushing. The free ends of polyethylene coated cables, are passed through through holes, respectively, of the other rubber bushing, are pulled out through the cavity of the outer cylinder, and are electrically connected to the respective free ends of the corresponding Teflon coated cables by means of joint terminals.

Abstract: A suction-type desoldering device includes an elongated tubular heater assembly secured to the forward end of a hollow handle by a radial flange on the assembly. A removable solder collecting chamber adapted to have a vacuum created therein is disposed within the handle and has an open end connected in solder flow communication with the heater assembly by means of a compressible sealing member disposed between the flange and the open end of the chamber. The heater assembly includes a tubular sleeve secured to and extending through the flange adjacent the seal. A tubular support having a length of electric resistance heating wire wrapped therearound is mounted coaxially within and spaced from the tubular sleeve and has one end thereof extending freely into the collection chamber and the other end thereof receiving a removable tubular desoldering tip.

Abstract: Disclosed is contractible conduit sealing connector that features an expanded sleeve made from a heat recoverable metallic material which when exposed to a sufficient amount of heat is able to contract and secure at least two conduits together while at the same time enabling an expandable material contained within a chamber of the sleeve to expand and engulf any electrical conductors and/or cables extending through the connector between the conduits and fill the chamber sufficiently to provide a barrier against the flow of vapor through the conduits.

Abstract: A feedthrough apparatus for passing signals through a bulkhead. The feedthrough apparatus has a header shell with a header shell opening therethrough with a swage duct inserted in the header shell opening. An end of the swage duct extends out of the header shell opening and has a communicative means inserted therethrough. A swage plate opening formed in a swage plate is fitted over the end of the swage duct extending out of the header shell opening and is constructed so as to swage the swage duct about the communicative means, securing the communicative means in the swage duct and providing a hermetic seal for the communicative means.

Abstract: A splice case or vault end closure assembly which includes an inner plate having an inner face, an outer face, and a plurality of apertures arranged in a generally hexagonal array communicating between the faces. An annular recess surrounds each aperture in the outer face and a resilient gasket is partially received in each of these recesses. An outer plate is also provided having an inner face, an outer face, and a plurality of through apertures adapted to register with the inner plate apertures. The inner and outer plates are positioned such that the inner plate outer face is in an opposed relationship to the outer plate inner face with the outer plate inner face contacting the gaskets disposed in the inner plate recesses. Means are provided for drawing the plates toward each other in a controlled fashion to longitudinally compress and radially expand the gaskets into the apertures.

Abstract: A heat-recoverable sleeve for enclosing splices or joints in pressurized cables or supply lines is given increased resistance to peeling away from the cable or line by insertion of auxiliary means, preferably a U- or V-shaped flexible strip, which may be heat-recoverable, between the sleeve and the cable or supply line. The ends of the strip are preferably closed and are preferably overlapped and bonded to each other when the strip is placed around the cable or supply line. A release foil may be positioned inside the U- or V-shape of the strip to resist bonding together of the opposed arms thereof, and the foil may carry adhesive to bond it to one of the arms and may protrude beyond the ends of the arms so that the foil adhesive can help to locate the strip on the cable or supply line.

Abstract: A multiple joint box having a socket pipe and sealing bodies, the sealing bodies comprising spirally wound tape having semicircular recesses formed along its length which coincide to form circular cable apertures. The multiple joint box may be applied without the necessity of cutting or desplicing the cable.

Abstract: A connector for joining an end of an electrical resistance heating wire of an electrical heating cable enclosed in water-tight tubing with an end of the wire of an insulated electrical conductor comprises a heat-absorbing electrically conductive core member to receive and be clamped onto the wire ends, a rigid sleeve forming an elongate cavity to receive the core member with the wire ends fastened thereto, electrical insulation inside the sleeve between it and the core member and the wire ends, and a coupling ring fixed onto each end of the sleeve, one of the coupling rings having structures connected to it for clamping it substantially immovably onto an end portion of the cable-enclosing tubing and the other coupling ring having structures connected to it for forming a substantially water-tight joint between it and the insulated conductor.

Abstract: The sleeve for protecting the splice (4) in telephone cables (2) and (3) is made up of two half-shells (1a, 1b) joined together by their adjacent edges, around splice (4). These adjacent edges are provided with a groove which, in the position where the shells are joined together, defines a duct, devices being provided for injecting into this duct a pasty material creating watertightness between these adjacent edges. The opposite ends (9, 20) of the sleeve are provided with jaws (11, 12, 13) for securing axially the ends of the cables (2, 3) to the sleeve and with devices for creating watertightness between these cables and these ends (9,10) of the sleeve.Each of the ends (9,10) of the sleeve bears at least two detachable jaws (11, 12) defining between them a chamber (18) connected with the above-mentioned duct.

Abstract: A sealing grommet (40), used in cable splice cases (10) for connecting multiconductor telecommunication cables (100, 120), comprises a unitary elastomeric body with cable receiving passageways (50, 70). Each passageway is defined by an interior sidewall (52, 72) from which a plurality of longitudinally spaced circumferential ridges (54, 74) extend. For a substantial portion of its circumference, each ridge has an axis of projection (60, 82) which forms an oblique angle (.alpha., .beta.) with respect to the axis (58, 80) of the passageway and is sufficiently elongated in longitudinal cross section so as to be capable of flexing with respect to the axis of projection during cable insertion and enlarging its opening diameter (D.sub.R, D.sub.SR) to accommodate and form a radial seal about a cable being inserted.

Abstract: A method and composition for effecting splices of high voltage cable sections for use with a mold placed around the cable sections. The composition comprises a liquid polyolefin, a finely divided solid polyolefin and a chain extension agent capable of reacting to form addition polymer linkages with the liquid polyolefin.

Abstract: An enclosure for encapsulating and sealing a cable includes a rigid, hollow cylindrical sleeve having an inner wall surface defining a chamber for receiving a portion of the cable therein. One end of the sleeve is sealably enclosed by an end seal and at the other sleeve end an end cap encloses the chamber. An inner disc is spaced longitudinally interiorly of the end cap to define with the end cap and with the inner wall surface, a cavity. An aperture is provided through the sleeve portion in registry with the cavity. Both the inner disc and end cap have apertures therethrough for passage of the cable. A sealing ring of mastic is sealably affixed around the inner wall surface of the sleeve and a sealing band of mastic is sealably affixed around the cable, the sealing ring and sealing band both contacting the inner disc at its longitudinally interior surface.

Abstract: This invention is directed toward a seal (25) for fused salt batteries (10) having a current conducting rod (19) partially within said battery and partially outside which includes a layer of compressible material (32) on the body of the current conducting rod leaving exposed the opposite ends thereof and a swaged metal sheath (33) covering and compressing the layer of material to approximately its maximum density. Optionally, a sealing glass (35) having a low coefficient of thermal expansion approximating that of the current conducting rod and the metal sheath can also be employed over the end of the rod and/or a plating (31) of a conductive metal can be provided over the end of the current conducting rod outside of the battery and/or a separate coating (28) of a different material can be deposited on the rod between the rod and the layer of compressible material. A process is also provided for forming the seal.

Abstract: A conduit end is sealed around one or more than one insulated conductor by using a chamber (4) having a peripheral wall, a base with an opening through it communicating with the conduit (2) and an opening opposite the base. The conductor(s) (3) extend through both openings; a pre-formed annular body of a setting resin composition (8) is inserted while in a pasty or viscous condition into the chamber to encircle the conductor or conductors. Axial pressure is then applied to the still pasty or viscous annular body to cause it to flow and form a sealing body in peripherally continuous contact with the chamber and with the, or each, insulated conductor, after which the resin composition sets. A kit for use in the method is also claimed.

Abstract: Disclosed is a method of sealing the ends of electrical cable to prevent ingress of contaminants such as moisture.

Abstract: This electrical conduit end seal includes a cylindrical walled member having an opening at one end dimensioned to receive the conduit. The end opening terminates in a first partition having at least one aperture through which a cable in the conduit may pass in a friction fit. A second partition is parallel to and spaced apart from the first partition and has at least one corresponding aperture through which the cable may pass in a friction fit. The first and second partitions form, together with the cylinder wall, a sealing chamber. The sealing chamber has first and second openings communicating from the chamber to the exterior of the end seal. In use, the end seal is fastened to the conduit with the cable extending through the partition apertures. A caulking gun or other suitable dispenser is used to inject a curable resinous material or other sealing material through one of the chamber openings. The other chamber opening allows escape of air while the material is filling the chamber.

Abstract: A sealing device comprising a hollow body member having a plurality of spaced apart external deformable flanges and provided with a sealant on its external surface, preferably between the flanges. The device may be used to seal a supply line within a duct by pushing it within the duct so that the flanges are deformed, the sealant preferably being provided in a generous amount so that it fills the remaining gaps between the flanges after such deformation. The hollow body member may then be sealed to the supply line using, for example, a heat-shrinkable sleeve. The device may also be used to couple and repair hollow substrates such as gas and water pipes.

Abstract: A seal plug for conduits is disclosed having a plug core including at least one radially-expansible seal member for sealing the conduit in which it is disposed, while permitting passage of cables or the like therethrough. Until required for the cable or cables, the passages in the seal plug are closed by removable pin inserts, retainer means being provided to hold the inserts in place. The plug includes longitudinal compression means to bring the seal member into sealing contact with the conduit wall. Each passage may open to the circumference of the respective seal member via slits to permit sideways insertion of the cable therein.

Abstract: A high pressure gland for optical fibres and/or electrical conductors has a tubular member through which the fibres/conductors are loosely passed. The bore of the tube is then filled with an encapsulating plastics material which adheres to both the fibres/conductors and the wall of the tube bore. The outside of the tubular member is shaped so as to be mechanically secured and sealed in an aperture in a bulkhead or the like. The construction of the gland is such that it can withstand a high axial pressure differential such as might be experienced on the sea bed.

Abstract: A cable splice case for communications cables comprises a two part outer shell, divided perforate end plates, and a cable collar for each cable end. The cable collar is grooved to receive an end plate gasket. A preferred form of cable collar is in two parts and fits together over a mastic winding between two washers on the cable to form a hermetically sealed cable end structure which is retained during reentry of the splice area. Details of gasket, tie bar, and strain relief structure are given.

Abstract: A composite washer is comprised of two identical flexible mating half-washers each offset along a diameter and slit along an offset radius. Two half-washers are mated after being slipped over a cable section to provide a fluid-resistant barrier in a cable splice enclosure.

Abstract: A flexible coaxial cable splice for connecting service lines to a telephone cable in which the splice enclosure includes a tubular housing of resilient flexible material having integrally formed, radially offset tubular end portions which are inserted inside rigid annular collars. Tapered plugs surrounding the cables entering the housing are inserted through the open ends of the collars into the offset end portions of the housing. The collars each have an outer lip which engages the larger end of the tapered plug when the plug is in place. The lip of the collars acts to hold the plug in the surrounding offset portion of the tubular housing in compression to seal the interface between the plug and the housing.

Abstract: A sealing device characterized by two sealing members which are clamped together to support at least one cable within a cable fitting. Each of the sealing member has at least two axially spaced lamella-form sealing elements, which extend inward from a separation plane and have a ring-shape hollow space therebetween. The sealing elements are cut in an appropriate position for receiving the cable adjacent to the separation plane. The improvement includes a disk shape member in the ring-shape space to subdivide each of the spaces and to prevent the flow of a sealing material, which is disposed between the sealing elements and the cable, into the ring-shape spaces.

Abstract: A cable adapter (10) is disclosed for converting a cable closure nozzle (16) to a selectable diameter two cable entrance. The adapter is comprised of a unitary molded member (11) of electrically insulative material. In the interior of the unitary member are first and second adjacent pluralities of concentric openings (12,13) of various diameters. These openings extend along the length of the unitary member in increasing order of diameter. The unitary member is adapted for engagement with the cable closure nozzle (16) at the larger diameter end (15). This configuration facilitates a sealed entrance of first and second axially aligned cables (17,18) into the cable closure (19).

Abstract: A method and composition for effecting splices of high voltage cable sections for use with a mold placed around the cable sections. The composition comprises a liquid polyolefin, a finely divided solid polyolefin and a chain extension agent capable of reacting with condensation reaction moieties of the liquid polyolefin.

Abstract: There is provided a plastic collar integral with the outer jacket of a cable. The plastic material includes a mixture of a plastic and an electrically conductive material such as carbon black. The plastic is melt bonded to the cable jacket by applying electric current through the material, thus melting the material onto the jacket of the cable. Upon melting, the semi-conductive plastic may be molded into the desired form, and upon cooling, it becomes bonded to the cable jacket. The collar may be used as a seal for the ends of a cable splice closure as well as a shoulder for securing a sealing gasket to a cable for use in such closures. The collar also may be used as strain-relief for the conductors which are inside the cable as well as other uses.

Abstract: An electrical fitting for use in a conduit run which includes a sealing chamber into which a compound is placed to prevent the passage of gasses, vapors, or flames from one end of the fitting to the other. The fitting includes a drainage port to prevent the collection of water and a filling port through which the sealing compound is placed in the sealing chamber. The drainage port and sealing chamber have coplanar upper limits whereby any excess sealing compound placed in the sealing chamber is drained off through the drainage port. An interior shield member of the body shields the upper opening of the drainage port whereby no sealing compound can enter the drainage port directly from the filling port. Thus, there can be no flow of sealing compound through the drainage port until the sealing chamber has been filled. Underfill and overfill of the sealing chamber are prevented, and no core or plug projects upward from the drainage port during filling.

Abstract: An electric heating element having an improved electrical termination. The heating element comprises a conventional tubular metal sheath with a heating coil embedded in granular refractory material which is contained within the sheath. Terminal pins are electrically connected to opposite ends of the heating coil and extend outwardly of opposite ends of the sheath. My improvement provides for easy and efficient connection of a power conductor to a terminal pin and includes a metal sleeve having interengagement with a respective sheath end to provide protection for the terminal connection.

Abstract: The cable sleeve permits lateral insertion of cables into cable insert parts. The cable insert parts are located within a pair of spaced sleeve heads interconnected by a tubular shaped supporting jacket. The assembled cable sleeve is enclosed within a plastic shrunk-on hose. Cable insert parts are connected to the sleeve heads and axially extending slots are provided through the sleeve heads into the cable insert parts. Similarly, the supporting jacket is split in the axial direction and the plastic hose has an axially extending slot with the juxtaposed edges of the slot being closable in a known manner after it is placed about the supporting jacket and sleeve heads.

Abstract: A sealing device comprising a hollow body member having a plurality of spaced apart external deformable flanges and provided with a sealant on its external surface, preferably between the flanges. The device may be used to seal a supply line within a duct by pushing it within the duct so that the flanges are deformed, the sealant preferably being provided in a generous amount so that it fills the remaining gaps between the flanges after such deformation. The hollow body member may then be sealed to the supply line using, for example, a heat-shrinkable sleeve. The device may also be used to couple and repair hollow substrates such as gas and water pipes.

Abstract: A laminated sealing article comprising a layer of adhesive sandwiched between a pair of cross-linked, dimensionally heat unstable wafers of polymeric material. The article is provided with a plurality of apertures adapted to receive a corresponding plurality of substrates. The gaps between the plurality of substrates are sealed by heating the article to the recovery temperature of the wafers. This heating causes the layer of adhesive to bond to the substrates and the wafers to recover around the substrates thereby forming a seal between all of the substrates and the article. The heat recoverable article of the invention is particularly well adapted for use in a method of environmentally sealing the rear of an electrical connector of the type having a plurality of individually insulated electrical conductors extending from a tubular rear portion.

Abstract: A terminal end seal for a metal-sheathed electric immersion water heating element of a water heating tank includes a plastic sealing plug disposed within a pocket at the end of the sheath in surrounding relationship to the terminal pin and locked in sealing engagement with the sheath by inward deformation of the sheath. An electrically insulative vulcanized fibre washer is disposed in the pocket inwardly of the plug in engagement with the terminal pin and inner surface of the sheath. Without the fibre washer, it would be possible under abnormal conditions for the plastic sealing plug to fail and the sheath portion immersed within the water in the tank to fracture, allowing water to enter the sheath and flow outwardly of the then-open sheath end to cause damage. However, the fibre washer intercepts such water and swells to form a tight seal to restrict flow of water outwardly of the sheath.

Abstract: A gas filled bushing having an insulating shell and a centrally disposed bushing conductor. Flexible means integrally formed with the flange ring are utilized to control the compression of sealing means against the insulating shell to minimize the leakage of gas through the joint between the flange ring and the porcelain or epoxy insulating shell, without using excessive force which might break the insulating shell.

Abstract: A coaxial, hermetically sealed end structure is described for electrical instrumentation cables. A generally tubular ceramic body is hermetically sealed within a tubular sheath which is in turn sealed to the cable sheath. One end of the elongated tubular ceramic insulator is sealed to a metal end cap. The other end of the elongated tubular insulator has an end surface which is shaped concave relative to a central conductor which extends out of this end surface. When the end seal is hermetically sealed to an instrumentation cable device and the central conductor is maintained at a high positive potential relative to the tubular metal sheath, the electric field between the central conductor and the outer sheath tends to collect electrons from the concave end surface of the insulator. This minimizes breakdown pulse noise generation when instrumentation potentials are applied to the central conductor.

Abstract: An adjustable depth tubular sheath thermowell which permits changing the depth of extension of the well from its mounting into the environment to be sensed. Excess length at the exterior may be trimmed off and after trimming the open end may be sealed. An interior sensor and lead wire assembly is removable from the tubular sheath or well. The well can thus be trimmed to a desired length to fit a particular application and the fittings utilized with the well may again be reassembled to adequately seal the interior of the well against contamination and foreign material.

Abstract: An improved coaxial end seal for hermetically sealed nuclear instrumentation cable exhibiting an improved breakdown pulse noise characteristic under high voltage, high temperature conditions. A tubular insulator body has metallized interior and exterior surface portions which are braze sealed to a center conductor and an outer conductive sheath. The end surface of the insulator body which is directed toward the coaxial cable to which it is sealed has a recessed surface portion within which the braze seal material terminates.