Abstract: A signal transmission cable is described that comprises at least one signal conductor centrally disposed in the cable and a plurality of concentric layers disposed around the at least one signal conductor, wherein the plurality of concentric layers comprises at least one non-porous layer and a porous exterior layer surrounding the at least one non-porous layer. The signal transmission cable is characterized as having a characteristic diameter that can be reduced upon application of an external force.

Abstract: A connector comprises: a connector body comprising an inlet end and an outlet end with a bore extending therethrough, the connector body further comprising a leading end portion positioned at the inlet end and a threaded portion at the outlet end of the connector body and a connector main body portion positioned between the leading end portion and the threaded portion; a generally annular bearing case having a tapered surface positioned in the leading end portion of the connector body, the bearing case formed with at least one recess and wherein the tapered surface has a hollow portion therein and includes a bearing case axis; and at least one locking element positioned in the at least one recess of the bearing case and movable along the bearing case axis.

Abstract: A cord grip has a conduit hub configured to be connected to an electronics housing. A bore is formed in the conduit hub and has a first end communicating with the electronics housing and a second end configured to be connected to a conduit. A wire seal retains electrical wiring and is located in the hub forming a liquid-tight seal between the first end and the second end. A channel for transporting liquid from the conduit has an inlet communicating with the conduit and an outlet communicating with the exterior of the electronics housing. An overmolded bond may be formed between the wire seal and the electrical wiring.

Abstract: An electric motor having a housing having a front and a rear end plate, a rotor that is mounted in the end plates, a stator, the core of which stator includes stator plates that are aligned with respect to each other in the axial direction of the rotor, and a housing cooling system that includes a tube that surrounds the stator core, the being concentrically surrounded by at least one cooling channel that is open towards the tube.

Abstract: An unwelded explosion-proof drain cable gland assembly includes: a gland nut that is disposed on an outer circumference of a flexible tube and has a seat protruding inward; a gland having a cylindrical compression pin part that is formed at an upper portion thereof, an annular flange that is formed integrally with the compression pin part and protruding in a radial outward direction, and a binding part that is integrally formed under the flange and is inserted into and bound to the flexible tube; a gland washer that is installed in front of the gland and comes into surface contact with an upper surface of the compression pin part; a rubber packing that is disposed in front of the gland washer and has a hollow interior; and a coupling into which the rubber packing is fitted and whose outer surface is threaded to be coupled with the gland nut.

Abstract: A sealing ring having a flexible ring body and a front and rear seal separated by a channel and a set screw recess adjacent one end. The sealing ring is placed on the end of a set screw electrical fitting or connector and forms a seal between the body of the set screw electrical fitting or connector and the exterior surface of an electrical conduit. The sealing ring prevents concrete from entering a gap formed between the body of the set screw electrical fitting or connector and an electrical conduit during pouring of concrete. Concrete entering the gap may interfere with electrical connections.

Abstract: A cable gland and gasket ring assembly includes a gasket ring and a cable gland formed of a shell, a collar, a packing ring and a connection ring for securing a cable, or, a cable and a flexible conduit, to a junction box. The gasket ring is an annular member, having a first end face, a second end face opposing the first end face, a plurality of annular ribs concentrically arranged on the first end face and an annular convex portion located on the second end face. The connection ring has a recessed portion on a stop flange segment for receiving the annular convex portion and a tapered inner surface located on the inside of the stop flange segment for stopping against a tapered outside surface of the packing ring.

Abstract: A cable gland and gasket ring assembly includes a gasket ring and a cable gland formed of a shell, a collar, a packing ring and a connection ring for securing a cable, or, a cable and a flexible conduit, to a junction box. The gasket ring is an annular member, having a first end face, a second end face opposing the first end face, a plurality of annular ribs concentrically arranged on the first end face and an annular convex portion located on the second end face. The connection ring has a stop flange segment, a first connection ring segment extended from one side of the stop flange for holding the gasket ring, an outer thread located on the first connection ring segment for fastening to a junction box, a recessed portion on the stop flange segment for receiving the annular convex portion of the gasket ring and a tapered inner surface located on the inside of the stop flange segment for stopping against a tapered outside surface of the packing ring.

Abstract: A water-proof junction box and a water-proof connector assembly therein are provided. The water-proof junction box includes a junction box body, a junction box cover and at least one water-proof connector assembly deposited at a lateral of the junction box body. The water-proof connector assembly includes a tube, a water-blocking sleeve, a pressing element and a fastening element, all of a cannular shape. Therein, the tube and the junction box body are integrated, and the tube has an externally threaded portion. The water-blocking sleeve is for being inserted into the tube and has a flange as well as a sleeve portion. The pressing element is for being mounted around the sleeve portion of the water-blocking sleeve. The fastening element is internally formed with an internally threaded portion for screwingly coupling the externally threaded portion of the tube.

Abstract: A moisture proof electrical connector assembly for securing an electrical metal tube or conduit to a connector body having opposed end portions and having a bore extending therethrough wherein an end portion includes a first linear length sized and shaped to receive a metal tube or conduit and a second linear length having a diverging inner surface provided with an intermediate shoulder for delineating the first length form the second linear length, and a complementary sealing gland for rendering the entire assembly moisture proof.

Abstract: A coupling device that provides a liquid tight seal at the connection with a conduit with easy installation. The device comprises a tubular connector body, a compression nut, a first sealing ring, a second sealing ring, a ferrule, and a lock nut. The coupling device may be installed fully assembled and does not require disassembly of the packaged product before installation. In the connector body a radial ledge is formed within the tubular spaces between the first and second ends. The radial ledge of the connector body has at least one depression. The ferrule has a tubular body with a radial flange extending from a first end portion. At least one protrusion extends from the radial flange that corresponds to the depression on the tubular body. When the depression of the tubular body engages the protrusion of the ferrule, it restricts the ferrule from relative rotation. This restriction allows that the coupling device be installed fully assembled.

Abstract: An electrical fitting in the form of a connector or coupler for connecting an electric metal tube to an electrical box or panel or to one another. The fitting includes a body having an inlet end portion, an outlet end portion and a bore extending therethrough. An unidirectional locking device is disposed in an outermost chamber and a sealing washer disposed in an intermediate chamber. A split ring having an angularly bent leading end is provided with a series of offset circumferentially spaced unidirectional gripping tangs. The locking device may also be provided with a series of tube support tangs at the trailing end. Also, the locking device includes a tang forming an electrical bonding or ground between tubes, locking device and connector body.

Abstract: A coupling for non-metallic flexible electrical conduit is formed of a one piece lightweight molded thermoplastic cylindrical sleeve having a pair of threads extending inwardly toward opposite ends. Spaced axially inwardly from the inner end of each thread is an annular sealing ring having a sloped leading face and a perpendicular trailing face with the faces intersecting at a sharp annular edge. Lengths of conduit are engaged over opposite ends of the coupling and rotated to advance the conduit lengths over the sleeve. A liquid tight engagement is effective between each conduit length and the coupling when the conduit length advances past the sealing ring.

Abstract: An electrical power feed thru for thin-walled vessels such as aircraft fuselages is disclosed which allows high electrical current power lines, and their associated high operating temperatures, to transition from the inside to the outside of the aircraft. The feed thru includes sealing surfaces, anti-rotation features and safety covers. This low-profile configuration permits the attached cables to run close to the fuselage walls, permitting easier routing and clamping. The feed thru has a variable geometry which permits alternate spacing of the end terminations in reference to the fuselage while maintaining the same parts. Installation is simplified through a single fuselage wall mounting hole design that can be done with a standard punch. The feed thru exceeds the shock and vibration environments of various aircraft such as a military aircraft.

Abstract: A moisture proof electrical connector assembly for securing an electrical metal tube or conduit to a connector body having opposed end portions and having a bore extending therethrough wherein an end portion includes a first linear length sized and shaped to receive a metal tube or conduit and a second linear length having a diverging inner surface provided with an intermediate shoulder for delineating the first length form the second linear length, and a complementary sealing gland for rendering the entire assembly moisture proof.

Abstract: A tube coupling for connection to a conduit through which a cable may pass includes a coupling body having an open ended throughway to receive an end of the conduit and a tube locking device in the open end of the throughway for locking the conduit in the coupling body. The throughway has a reduced diameter section with an annular step at an end of the section facing towards the open end of the throughway to receive the end of the conduit inserted into the throughway. An annular flexible sealing member is disposed adjacent the step to be forced by an end of a tube inserted into the throughway into the reduced diameter section of the throughway. Compression of the annular flexible seal forces the seal into sealing engagement with a cable extending along the throughway to provide a seal between the coupling body and cable.

Abstract: A connector/bushing assembly for electrical junction boxes includes a nut which may receive a male conduit/connector which extends through the wall of a junction box, and a liner situated within the nut. The nut receives the male connector within a nut junction end situated opposite from a nut entry end. The liner is received within the nut entry end to extend toward the nut junction end, and includes a floating portion near the nut junction end, with the floating portion defining a cylinder spaced from the inner diameter of the nut junction end so that the (cylindrical) male connector can be received within the nut junction end between the floating portion and the nut junction end.

Abstract: An electrical connection assembly for securing electrical metal conduit to a junction box or the like, having a connection body with an inlet end portion for receiving a conduit wherein the inlet end includes a first portion sized to snugly receive an end portion of a conduit and a second portion having an internal surface that diverges outwardly toward the opening of the inlet end portion. A unitary sealing and compression ring is fitted onto the end portion of a conduit, and is positioned thereon so that the sealing ring portion of the unitary ring is received within the inlet end portion. A fastening nut secures the conduit to the inlet portion by causing the sealing ring portion to form a water or fluid tight seal between the connector body and the associated conduit and forming a mechanically sound connection between the connector body and the conduit. The unitary sealing and compression ring formed of metal insures positive electrical grounding of the assembled connection.

Abstract: A joint structure for connecting a corrugated pipe to a fixed part includes a main body, a packing screw cap, and a clamping claw. The clamping claw is sandwiched between the main body and the packing screw cap. The clamping claw defines a through slot at an edge thereof to make the clamping claw can enlarge an inside diameter thereof. A plurality of inner claws is formed at the edge of the clamping claw. A locking part protruding towards the center of the clamping claw is formed at an end of each of the inner claws. Two slits are respectively defined at two sides of each inner claw so that the inner claw has elasticity. The corrugated pipe with different diameters can directly insert into the clamping claw from outside, and the corrugated pipe cannot be dropped out directly.

Abstract: A connecting device for providing a liquid tight connection between a conduit and a panel includes a tubular body with a central flange having a forward face and a rearward face, a rear tubular section extending axially from the rearward face and a tubular nose section extending axially from the forward face. This body also has an annular cover section and an annular passageway be formed between the cover section and the rear tubular section. At least one thread is formed on the cover section and projects radially inwardly. A sealing ring is mounted in the passageway adjacent the rearward face and provides a seal between the tubular body and an end of the conduit. A forward fastening device secures the nose section to the panel.

Abstract: An apparatus for sealing a section of a pipe interior includes a clamp having a magnetic engagement means for axially positioning the clamp within the interior of a pipe and preventing relative axial movement there-between and a sealing plate securable thereto. Movement of the sealing plate against the clamp results in deformation of a resilient sealing member thereby forming a seal between the apparatus and the pipe. The apparatus can be used in conjunction with another oppositely oriented apparatus or other sealing means to form a sealed space within the tube. Pressurization of the sealed space allows for a radial and/or axial force being applied to the sealed section of the pipe.

Abstract: The cable hose 30 and hose 20 are designed for use in a system where the handset dispenser 10 is remote from the metering and pumping function. As the user dispenses oil or other fluids, data is transmitted by a communication wire 30 that runs inside the hose 20 that transports the fluid. The power to energize the components is also transmitted through the same wire 30. A swivel 36 is designed for use with this hose 20 and cable 30 so as to limit rotation to less than 360 degrees thereby preventing damage to the cable 30 from excessive twisting. A barbed swivel fitting 38 attaches to the hose 20 and is provided with a partial circumferential groove 40 which extends around the fitting 38 less than 360 degrees and provides a physical barrier preventing rotation beyond the desired amount.

Abstract: A water proof electrical connector assembly for securing metal tubing to a junction box or in an end to end connection having a connecting body with opposed open ends, and an electrical metal tubing secured to at least one open end. The open end includes a linear length sized to snugly receive the end of the metal tubing and a diverging linear length immediately adjacent the open end. A sealing gland having a complementary tapered outer surface with a radially outwardly extending flange and a split compression ring fitted onto the metal tubing so that when assembled, the sealing gland provides a fluid tight seal, and the split ring effects a mechanically tight, electrically grounded, connection between the connecting body and the metal conduit.

Abstract: A moisture proof electrical connector assembly for securing an electrical metal tube or conduit to a connector body having opposed end portions and having a bore extending therethrough wherein an end portion includes a first linear length sized and shaped to receive a metal tube or conduit and a second linear length having a diverging inner surface provided with an intermediate shoulder for delineating the first length form the second linear length, and a complementary sealing gland for rendering the entire assembly moisture proof.

Abstract: A section of trunking (20) has sides (22) which define a channel (34). Edge portions (32) of sides (22) are shaped so as to form further channels (34); Lid (26) has surface (29) and edge portions (30) which extend over channels (34) so as to form enclosed volumes. Screws (36) are used to fix lid (36) onto trunking section (20). Any water leaking through holes (38) and down the threads of screws (36) will be retained within channel (34) and will eventually dissipate between the side portion (30) of lid (26) and side (22) of trunking section (20). Trunking sections (20) are coupled by coupling (50) which is formed from surfaces (52, 54, 56, 58, 60, 62 64 and 66) which themselves engage internal surfaces of the trunking sections and their respective lids. Coupling (50) is provided with pairs of threaded holes.

Abstract: A liquid-tight electrical connector formed by a one-piece, zinc die cast member including a ferrule insertable into a conduit, and a sleeve body surrounding the ferrule to form a conduit receiving channel, the sleeve body having a strap section that can be drawn tight around a conduit to secure it in the channel.

Abstract: A rain tight fitting for connecting electrical metal tubing to a panel. The rain tight fitting includes a tubular body having an inner bore and a rearward end. A threaded outer periphery and a seal ring seat are included on the rearward end. A seal ring is disposed against the seal ring seat and a compression ring against the seal ring. A compression nut is threaded upon the rearward end and tightened thereon to force the seal ring tightly into the seal ring seat and against the outer periphery of the metal tubing. An effective rain tight seal is formed by the close tolerances between the inner periphery of the seal ring and the outer periphery of the metal tubing and by the hardness of the seal ring.

Abstract: A liquid tight connector for non-metallic conduit is formed of a one piece body having a through bore. A sleeve extends inwardly from one end of the body and a threaded nipple extends inwardly from the other. Projecting transversely from the inner end of the nipple is a flange. A ferrule skirt extends from the flange toward the sleeve end of the body to define an annular channel concentric with the sleeve. An internal buttress thread is formed on the inner wall of the skirt. An end of a length of conduit is slipped over the end of the sleeve and into the mouth of the channel. The connector is rotated relative to the conduit, with the thread engaging an outer wall of the conduit to tightly draw the channel over the conduit. An outward flare is provided at the flange end of the sleeve to compress and seal the conduit.

Abstract: In fittings designed to connect threadless electrical conduits, the improvement of providing raintight fittings, having a hollow cylindrical housing with a bore adapted to receive an end of a conduit to be connected with such a fitting and a compression ring with a solid ring portion assembled on the conduit along with a seal, with the solid ring portion of the compression ring providing a radial surface for advancing the seal along the conduit and to compress the seal radially against the conduit to effect a raintight seal between the housing and such conduit and a compression means which is forced against such conduit by a nut system to lock such conduit in the fitting when the radial face of the compression ring abuts against the housing after compressing the elastomer seal against such conduit.

Abstract: In a three piece coupling which has bushing with internal and external threads for assembly on a threaded end of a conduit by its internal threads, a sleeve adapted to fit over a second conduit to be joined by the coupling with internal threads operable to engage the external threads of the bushing to advance the sleeve on the bushing when it is rotated and a collar sized to fit within the sleeve without restricting its rotation, the collar having internal threads for assembly on a threaded end of the second conduit to be connected with the coupling and retained in the sleeve so that the collar is advanced with the sleeve, the improvement including a first seal operable to effect a water tight seal between the bushing and the sleeve and a second seal operable to effect a second water tight seal between the sleeve and a conduit connected to the collar by mechanical compression whereby the coupling joins the conduit components in a water tight joint without rotating the components and without losing conductivit

Abstract: A liquid tight connector for connecting metallic or non-metallic conduit to a panels or junction box. The connector includes a forward end that accommodates either a spring steel adapter or a lock nut to secure the forward end to a panel in a liquid tight fit. A cover on the rearward end encloses an annular sealing ring and an annular retaining ring to form a conduit accepting channel including a conduit sealing portion and a conduit retaining portion. A conduit is secured to the rearward end of the connector by simply pushing it within the channel and tightening the cover to achieve a liquid tight fit. By eliminating disassembly and reassembly of parts, the connector provides significant labor savings over prior art liquid tight conduit connectors.

Abstract: A conduit elbow assembly includes a hollow conduit piece having an end with an outer diameter, a body and a cap. The body has a first connective end with an end bore at the first connective end receiving the hollow conduit piece therein. A male fitting is located at the first connective end, the male fitting having an outer surface and an end which extends into the end bore. The outer surface of the male fitting has barbs which engage and retain the end of the hollow conduit piece thereon. The cap is attached ton the body and has a plurality of tapered projections, of which two are diametrically opposed to each other relative to the outer diameter of the hollow conduit piece. The two tapered projections form a wedge fit with the outer diameter of the hollow conduit piece.

Abstract: A liquid tight connector for connecting non-metallic or metallic conduit to panels or similar devices. The connector is an effort and time saving device that allows connection of conduit to panels without the need to disassemble a portion of the connector and then reassemble again as in prior art devices. The connector allows an installer to simply push a conduit into one end of the connector and push the opposite end of the connector into an aperture in a panel. Liquid tight seals are created between the conduit and the connector and between the connector and the panel. By proper selection of the material of construction, the connector may be built for use with either metallic or non-metallic conduit.

Abstract: A liquid-tight connector is attached at one end to an aperture in a junction box, a panel box, a motor or the like. The opposite end of the connector is adapted to receive a free end of a length of flexible conduit. A cuff is positioned on the connector to conceal the free end of the conduit from view.

Abstract: A wastewater treatment system having an aeration tank (20) is provided with an operations control center (12) that includes a controller (64) and an aerator pump (50) mounted atop a base (58), which is in turn mounted atop a platform (56). A plurality of electrical lines (66) extend from the controller through respective conduits (90, 92, 94, 96). The conduits extend through and are sealingly engaged by holes in the base and the platform. A compression fitting (136) and coupler (154) are included to provide a fluid-tight seal. This arrangement is advantageous because it prevents corrosive gases from entering the operations control center and corroding the terminals thereof. Also described is a wastewater treatment system that includes a pretreatment tank (244), an aeration tank (20), and a pump tank (202) secured together by a connector that includes bands (260, 262) and spacing means (264, 268) for maintaining a fixed-spaced relationship between the tanks.

Abstract: A pass-through dual containment fitting that protectively seals a portion of pass-through tubing has a fitting body that incorporates a first end, a second end and a collar, each having a longitudinal bore for receiving the pass-through tubing. The second end having an extending nose portion. A radially compressive sealing device is engagable with the first end of the fitting body. When the radially compressive sealing device is fully engaged with the first end a fluid-tight seal is formed between the device and the fitting body. A dual containment sealing device incorporates containment tubing having a flared end and a flared end fitting. The extending nose portion of the fitting body is inserted into the flared end. The flared end fitting engages the second end of the fitting body to compress the flared end to the extending nose portion to form a fluid-tight seal between the dual containment sealing device and the fitting body.