Abstract: A hose connector is disclosed that provides a magnetized connection of hoses, tubes, cables, ducts, pipes, chains, straps, wires, twine, cord and/or rope creating a continuation in length for versatile and extended flow for, but not limited to, watering needs eliminating conventional connector threads currently requiring multiple turns to release or attach or existing pronged coupling requiring a degree of hand agility and strength. Thereby the disclosed matter provides the means for a fast, single motion attachment or twisting detachment of, but not limited to hose, tube, cable, duct, pipe, chain, strap, wire, twine, cord and/or rope ends without requiring the hand strength or precision that some conventional hose, tube, cable, duct, twine, cord, and/or rope connectors may require. There may be any combination of connecting the ends of hoses, tubes, cables, ducts, pipes, chains, straps, wires, twines, cords, and/or ropes. In some scenarios, flow is not required.

Abstract: An apparatus for sealing a piling to a planar member extending around the piling comprises a base collar sized to surround the piling at a first location and having a planar base flange extending therefrom and an upper collar sized to extend around the piling at a second location, the upper collar being sealable around the piling. A longitudinally extendable sleeve extends between the base collar and the upper collar sealing the base collar to the upper collar.

Abstract: Couplers for a cable trough system including a terminal end sized to receive a terminal end of a trough member along a longitudinal direction of the body. A spring may be coupled to the body for securing the terminal end of the trough member to the coupler, the spring including first and second spring arms extending generally in opposition to one another in a plane generally parallel to the longitudinal direction. The spring may be received in a slot formed by the trough member. Also included may be a spring release mechanism coupled to the body, the spring release mechanism sliding in the longitudinal direction between a locked position, such that the first and second spring arms engage the terminal end of the trough, and an unlocked position, such that the first and second fingers release the first and second arms of the spring.

Abstract: An end tube has an interior and exterior diameter and a length. A central tube has an interior and an exterior diameter and a length. The length of the central tube is greater than the length of the end tube. The exterior diameter of the end tube is essentially equal to the interior diameter of the central tube. An upper portion of the end tube is inserted into and attached to a lower portion of the central tube. In this manner a lower portion of the end tube is adapted to be inserted into a vent pipe of a roof.

Abstract: An expansion repair coupling for interconnecting two facing ends of a cut pipe comprises a tubular body, a spigot slidably and rotatably received therein and a locking mechanism to selectively lock or unlock the rotation of the tubular body relative to the spigot. An end of the spigot extends outward from the tubular body to receive a coupling that connects to one end of the cut pipe. A radially enlarged section on the spigot has a sealing mechanism that sealably engages an interior surface of the tubular body. The locking mechanism, engaged by collapsing the spigot into the tubular body or disengaged by extending the spigot therefrom, facilitates a push and twist connection at both ends of the pipe to wipe the adhesive disposed therebetween and obtain a better seal. Preferably, the locking mechanism comprises a socket having spigot engaging members that cooperatively engage socket engaging members on the spigot.

Abstract: An annular shaped crimp ring construction which incorporates two separate and distinct sections formed adjacent each other on the same annular member. In accordance with the present invention, the first section of the crimp ring comprises an axial length which is substantially greater than the axial length of the second section, with the first section also comprising a thickness which is substantially greater than the thickness of the second section.

Abstract: A soft pipe connecting device, comprising: a cylindrical joint, a fixed sleeve inside the joint for supporting the joint, and an outer ring sheathed outside the soft pipe and tightly pressing the soft pipe against the outer wall surface of the joint. The outside wall surface of the cylindrical joint is provided in sequence with a limit baffle, a groove and plurality of pawls whose tooth-tips are oriented towards the groove. The outer ring is made of expandable material. The inside wall surface of the outer ring is provided with a projection on the position corresponding to that of the groove of the joint, and plurality of reverse pawls whose positions correspond to those of the pawls of the joint. The groove may be provided therein with a sealing ring. The sealing effect is very good and can effectively prevent the leakage of gas or liquid.

Abstract: The present invention relates to a pipe coupling for a central vacuum cleaning pipeline adapted to be connected with at least one pipe to form a central vacuum cleaning pipe line. The present invention also relates to a manufacturing method for the pipe coupling. The pipe coupling comprises at least a first and a second opening defined by an envelope wall, the envelope wall comprises an inner and an outer surface, wherein at least said first opening is arranged to receive a pipe introduced into said first opening along a first insertion and retraction direction, so that the pipe coupling overlap the pipe with a part of the inner surface of the pipe coupling at an attachment section. The attachment section comprises in turn an annular seal member arranged in the attachment section to effectively seal between the inner surface of the pipe coupling and the outer surface of said pipe. The attachment section further comprises an annular recess which defines a stop surface.

Abstract: A tubular connection including a first joint having outer threads and an inner bore, and a second joint having outer threads and an inner bore. The tubular connection further includes an outer nut having inner threads that cooperate with the outer threads of the first joint and the second joint. The tubular connection further includes an inner sleeve positioned within the first inner bore and the second inner bore. In one embodiment, the first inner bore contains a first groove having a first seal disposed therein and the second inner bore contains a second groove having a second seal disposed therein, wherein the first and second seals prevents a pressure from exiting the first and second inner bore.

Abstract: A connecting and attachment component for a corrugated hose, having a sleeve-like basic body (1), with a corrugated-hose connecting end, and having an associated inner or outer sleeve (6), wherein the end of a corrugated hose can be plugged into the inner sleeve (6), which is inserted into the basic body (1), or, in conjunction with an outer sleeve, into the basic body (1), and the other end is designed in the form of a connecting element (3). At least two resilient arms (9) are provided on the sleeve (S) in each case, which at their base end (13) are secured on the sleeve (6) and, at their other, free end (10), have at least one radially running engagement protrusion (11) which extends inwards beyond the inner circumference of the sleeve (6) and can be brought into engagement with the corrugations of a corrugated hose, so as to arrest the latter.

Abstract: A pipe connecting device (10) for connecting two pipeline portions (12, 14) of an aircraft pipeline system comprises a bridge portion (16), the cross-sectional form of which is matched to a cross-sectional form of the pipeline portions (12, 14) that are to be connected to each other. The pipe connecting device (10) further comprises a first receiving portion (18), which is constituted by two limbs (20, 22) extending from the bridge portion (16) in a first direction, and which is adapted to receive an edge portion (38) of a first pipeline portion (12) of the aircraft pipeline system, and a second receiving portion (24), which is constituted by two limbs (26, 28) extending from the bridge portion (16) in a second direction opposite to the first direction, and which is adapted to receive an edge portion (40) of a second pipeline portion (14) of the aircraft pipeline system.

Abstract: A pipe joint is disclosed and can include a first pipe having a flange and a second pipe having a flange. A first sleeve can be installed within the first pipe and a second sleeve can be installed within the second pipe. Moreover, an annular ring can be disposed between the flange of the first pipe and the flange of the second pipe. The annular ring is configured to engage the first sleeve and the second sleeve and create a sealing engagement between the annular ring, the first sleeve and the second sleeve when a compressive force is applied to the first sleeve, the second sleeve, or a combination thereof along a longitudinal axis of the pipe assembly.

Abstract: A hose connector with adjustable ambient air inlets includes a conduit section having a plurality of spaced-apart holes covered by an adjustable outer ring having a similar pattern of spaced-apart holes. Turning the outer ring relative to the conduit section permits the holes in the conduit section to be either fully opened, fully covered, or at some intermediate condition.

Abstract: A coupler for a flexible tube is disclosed. The coupler includes a first channeled member having a generally semicircular cross-section and a first longitudinal axis extending therethrough and a second channeled member having a generally semicircular cross-section and a second longitudinal axis extending therethrough. The first longitudinal axis is generally parallel to the second longitudinal axis. A hinge connects a first length of the first channeled member to a first length of the second channeled member. A lateral axis generally bifurcates the first length of the first channeled member and the first length of the second channeled member. A plurality of barbs are disposed in each of the first and second channeled members, wherein each barb extends generally toward an intersection of the longitudinal axis of its respective channeled member and the lateral axis. A lock secures a second length of the first channeled member to a second length of the second channeled member.

Abstract: A riser assembly includes riser segments, each having threaded ends. A coupling nut is connected to the threaded end of the first riser segment. The threads of a second riser segment and a set of corresponding threads of the coupling nut are breech threads, which allow the second riser segment to stab into the coupling nut and engage the first riser segment. The coupling nut rotates a portion of a turn in order for the breech threads of the second riser segment and the first riser segment to engage each other. Castellations on the first and second riser segments engage each other to transmit torsional forces from one riser segment to the other instead of through the threads.

Abstract: A modular system for putting together different sized filter elements, especially filter elements having different lengths, more particularly filter devices for hydraulic fluids, comprising a support tube that defines an inner cavity in the corresponding filter element, said tube being surrounded by a filter mat that is substantially cylindrical and that matches the different dimensions and having passages to let the fluid pass through. The filter elements also contain at least one coupling member enabling connection on the end side of a corresponding support tube to an additional support tube having a location on the end side for interacting with and locking on the coupling member. Each coupling member is embodied as an attachment plug element with a crown consisting of interspaced tabs extending in axial direction and hooks for snapping on the location of the attached support tube.

Abstract: A coupling comprising a tubular inner member (9) defining a socket dimensioned to receive a pipe to be connected to the coupling. The inner member (9) is positioned within a tubular body (1) to define a closed annular chamber, and an inlet (2) is provided tough the body so as to communicate with the chamber. In use, pressurised fluid such as a setting resin is introduced through the inlet (2) into the chamber. The pressure of the introduced fluid is sufficient to cause the radially inwards deformation of the tubular inner member (9) so as to grip the pipe (13, 14) which is received within the socket. Pressure may be applied up to a predetermined limit, or until seal failure.

Abstract: The invention concerns a pipe connection for preferably polyethylene-pipes for high media pressure and a method of manufacturing said connection where said pipe-connection (1) shows connecting parts (4, 5; 4′, 5) with an inside dimension larger than the inside diameter of the pipe, in order to receive at least one in the connecting parts (4, 5; 4′, 5) insertable connecting component (6, 7), and an exterior casing (8) for pulling together and retaining the connecting parts. The connecting component (6, 7) comprises on first hand at least one, in respective connecting part applied metal-sleeve (13, 14) with radial inwards acting sealing components (15, 16), and on second hand one, through the two metal-sleeves extending joining-pipe (17) with an outside dimension allowing the joining-pipe (17) to be in contact with the sealing components (15, 16) of the metal-sleeves, and an inside diameter mainly corresponding to the inside diameter of the connected pipes (2, 3; 24, 3).

Abstract: A connector useful for combining the contents of a pair of containers which includes a hollow body for passing fluids between the containers. The body includes top and bottom end portions dimensioned to receive open-ended containers in an interference fit. The top end portion includes one or more recesses sized and arranged to facilitate drainage of a fluid from the first container into the second container when the first container is positioned above the second container. A middle portion is positioned between and adjoins the end portions of the body. A system for combining the contents of a pair of containers is formed when containers having substances to be combined are fitted onto the end portions of the connector.

Abstract: A pipe joint connecting a pipe using an anaerobic adhesive, which possesses a double pipe structure formed with an inner pipe fitting into the inner circumference side of the end of the pipe, and an outer pipe fitting into the outer circumference side of the end of the pipe, integrated with a gap between them, and a tapered surface formed with at least one or the other of the inner piper or outer pipe approaching the other; and a pleated O-ring provided on the end of the outer pipe to set the pipe in place by tightening an O-ring locking material supported by the outer pipe.

Abstract: The invention relates to a joint assembly for connecting together fiberglass cylindrical pipe and duct sections up to about one hundred and twenry inches in diameter. An internal tubular slip collar fits into opposing sections joining the sectionend to end. An external tubular slip collar is mounted over the joined sections encircling their exterior surfaces. A non-volatile epoxy adhesive secures the mating surfaces forming a double adhesive sealed and three level joint.

Abstract: Mechanical pipe connections are provided by this invention which include the feature of coupler recesses with discontinuous locking grooves on the pipes. The interlocking system may also include male and female portions which mechanically mesh together to form binding contact between the pipes to reduce the individual rotation of the pipes relative to one another.

Abstract: A pipe joint connecting a pipe using an anaerobic adhesive, which possesses a double pipe structure formed with an inner pipe fitting into the inner circumference side of the end of the pipe, and an outer pipe fitting into the outer circumference side of the end of the pipe, integrated with a gap between them, and a tapered surface formed with at least one or the other of the inner piper or outer pipe approaching the other; and a pleated O-ring provided on the end of the outer pipe to set the pipe in place by tightening an O-ring locking material supported by the outer pipe.

Abstract: In-field watertight joints for dual wall corrugated plastic pipe sections utilized in drainage and sanitary sewer applications utilize pipe sections having end corrugations without external peripheral corners nearest the pipe ends and a method for forming a self-energizing water tight joint in corrugated plastic pipe.

Abstract: Umbilical hose joint for connecting the ends of two hoses (1, 2) to each other in order to establish a continuous hose having a substantially uniform diameter, said joint comprising an inner sleeve extending into the ends of the two hoses (1, 2), each hose being crimped to the sleeve by a hose fitting (6, 7), said inner sleeve (3) being made of a single piece.

Abstract: The invention relates to a coupling unit for coupling two tubular membrane elements of the kind used in membrane filter technology, forming extensions of one another. The coupling unit comprises a jacket piece which is provided at both its ends with sealing surfaces intended to engage the facing ends of the membrane elements to be coupled thereto. The sealing surfaces may be formed on the interior peripheral wall of the jacket piece to engage the exterior peripheral wall of the ends of the membrane elements. However, the sealing surfaces may also be formed on the cross-cut end surfaces of the jacket piece, and engage the cross cut end walls of the membrane elements. The interior of the jacket piece may comprise an axially extending conduit portion to communicate with corresponding flow conduits in the membrane elements.

Abstract: A mechanical pipe coupling for thermoplastic pipe, the coupling including an outer sleeve with cuff portions at opposite open ends and an internally directed flaring, the sleeve having a central circumferential ridge between the cuff portions, the coupling also including a plurality of compression shoes with adjustment screws, with the compression shoes engaging the inside of the ends of the pipe and clamping the pipe against the inside of the sleeve.

Abstract: A pipe coupler is provided that is a non-metallic, cylindrical sleeve for connecting pipes that transport corrosive or abrasive fluids. The sleeve has grooves that are formed on the external surface of the fore and aft ends of the sleeve for receiving connector rings with internal grooves. Also, gaskets are used to seal the inner wall of the sleeve to the pipes. The gaskets may have a ribbed inner surface. The sleeve and connector rings receive the ends of two pipes to be connected. A tool is used to push the connector rings inward and onto the ends of the sleeve to cause grooves on the connector rings to engage the grooves on the ends of the sleeve. The gaskets in the connector rings compress against the external wall of each pipe to provide a seal against leaking.

Abstract: A tube connection apparatus for use with larger diameter flexible tubing particularly for hazardous material removal comprising an outer tapered sleeve and an inner tapered sleeve that is sized to snugly fit within the outer tapered sleeve and to engage the flexible tubing therebetween. A retainer ring is provided to secure a second flexible tube to the outer tapered sleeve and a transportable wall section which holds the sleeves may be positioned in a passageway of a building and tubing from spaces on either side of the passageway be connected.

Abstract: The present invention relates to an improved coupling device for tube and that is configured with a tube and an insert that can be fixedly disposed within the tube. The insert includes at least an enlarged portion that has an annular groove thereof, and a receiving space. The tube is provided with a plurality of through holes at the middle portion or end portions. The insert can be disposed within the tube and the outer of the tube is machined to form an annular recess corresponding to the annular groove in a manner such that the insert is fixedly disposed within the tube. Wherein each of the two tubes is provided with an insert in the position to be connected, and the tubes is arranged side-by-side at the area to be connected. An enclosing element is deployed to the connecting area such that the tubes are fixedly connected.

Abstract: An end plug for a stab-type coupler for a plastic pipe, the coupler having a first shell with a passageway therethrough. The end plug includes a hollow, cylindrical portion having a first end and a second end. An end wall is sealably attached to the cylindrical portion first end. External threads are formed on the cylindrical portion at the first end wherein the external threads engage internal threads on an end of the first shell. At least one vent hole is provided in the cylindrical portion of the end plug between the internal threads and the second end with the vent hole allowing fluid to vent when the external threads are partially unthreaded from the internal threads on the shell.

Abstract: A fume exhaust duct joint, a clamping collar for clamping two cylindrical dual-laminate duct sections joined by an internal slip collar, and a method for assembling the joint. A first embodiment of the clamping collar has two clamp portions each including a metal outer skin spot-welded to a metal inner skin. The inner skins have bifurcated protrusions whose bifurcations penetrate the duct section outer surfaces when the collar is tightened, and, optionally, two circumferential beads of fire retardant caulking. The inner skins and slip collar are bonded to duct section surfaces using a putty-like sealant including a settable admixture of curing agent and novolac epoxy resin. A second embodiment of the clamping collar, preferred for duct sections 3-inches in diameter or smaller, has a single circumferential clamp portion.

Abstract: For coupling first and second metal pipes, a coupling structure is provided which comprises a first diametrically angled end portion of the first metal pipe and a second diametrically enlarged end portion of the second metal pipe. The second enlarged end portion is mated with the first enlarged end portion so that the first and second metal pipes are aligned. A collar member of metal is concentrically disposed within the mated first and second enlarged end portions. The collar member is formed, around an axially middle portion thereof, with an annular ridge which entirely and intimately contacts with inner surfaces of the mated first and second enlarged end portions. A fastening ring of metal is concentrically disposed about the mated first and second enlarged end portions. The fastening ring is so shaped as to have a concave inner surface which intimately and entirely contacts with rounded outer surfaces of the mated first and second enlarged end portions.

Abstract: A plug-in connection is described for the joining of pipelines and hose lines, especially for use with the pipeline systems of motor vehicles, consisting of an inner sleeve and an outer sleeve, which accommodate a pipeline or hose line between them, so that a pipe socket can be placed on top of the outer sleeve, which can be locked by means of a protective element to the outer sleeve. The pipe socket has, on its outer circumference, at least one radial trapezoidal indentation oriented in the lengthwise direction. The pipe socket has an opening in the region of the indentation in the circumferential direction, through which a piece of the protective element reaches, and the indentation is matched up with a trapezoidal projection on the outer sleeve, with which the protective element interacts. The plug-in connection has at least one length-minimized, width-variable, integrated projection/opening arrangement on the outer sleeve and in the pipe socket with a detent spring for single-hand operation.

Abstract: A coupling for securing a plastic pipe. The coupling has a rigid hollow coupling shell with a passageway through it. A rigid stiffener tube is positioned internally of the shell, the stiffener tube having an external diameter slightly less than the internal diameter of the pipe. The stiffener tube has an external circumferential groove spaced from its outer end. A toroidal elastomeric seal is positioned within the stiffener tube circumferential groove. When a pipe end portion is inserted into the coupler shell, the stiffener tube extends telescopically within the interior of the pipe end portion and the seal engages the interior of the pipe to seal the interior of the pipe to the interior of the stiffener tube. A rigid gripper positioned within the coupler shell engages the exterior surface of the pipe and prevents the pipe from being extracted from the coupler shell.

Abstract: In order to connect two tubular guide rails, a connector is used. Each tubular guide rail is formed with an elongate rounded recess which extends perpendicular to the longitudinal axis of the tubular guide rail. A seal member of elastic material is to be put between terminal ends of the two tubular guide rails. A joint plate has two parallel elongate rounded recesses formed therein. The joint plate is connectable to the two tubular guide rails in such a manner that each of the parallel elongate rounded recesses mates with the elongate rounded recess of the corresponding tubular guide rail to define a substantially cylindrical pin receiving space. Two cylindrical positioning pins are employed each being to be received in the substantially cylindrical pin receiving space. A securing device is employed which, when actuated, gradually presses the joint plate against the tubular guide rails and finally secures the joint plate to the tubular guide rails.

Abstract: A pipe joint comprises two tube-end connectors 4, 4 to which the end of a tube 3 is connected, a cylindrical spacer 1 with the tube-end connector 4 fitted to either end, and a pair of metallic housings 6, 6 that each axially covers half the side outer circumference of the spacer 1 and each tube end connector 4, 4.

Abstract: A reinforcement insert for use in a coupling components in marine exhaust systems. The insert is generally made of a much stronger material than fiberglass and is inserted within corresponding openings of exhaust system components which are to be coupled. Thereafter, a sleeve and pipe clamps are secured to the exhaust system components and tightened thereon. The inserts prevent fracturing of the coupling area between the exhaust system components and thereby prevent dangerous leakage conditions which could otherwise result in the sinking of a vessel or other undesirable consequences.

Abstract: A coupling for securing a plastic pipe. The coupling has a rigid hollow coupling shell with a passageway through it. A rigid stiffener tube is positioned internally of the shell, the stiffener tube having an external diameter slightly less than the internal diameter of the pipe. The stiffener tube has an external circumferential groove spaced from its outer end. A toroidal elastomeric seal is positioned within the stiffener tube circumferential groove. When a pipe end portion is inserted into the coupler shell, the stiffener tube extends telescopically within the interior of the pipe end portion and the seal engages the interior of the pipe to seal the interior of the pipe to the interior of the stiffener tube. A rigid gripper positioned within the coupler shell engages the exterior surface of the pipe and prevents the pipe from being extracted from the coupler shell.

Abstract: A branched hose construction, part therefor and methods of making the same are provided, the method comprising the steps of disposing a mark on a length of hose that straddles the location where the hose is to be cut into two hose sections whereby the cutting of the length of hose into the two hose sections provides two parts of the mark respectively on the cut ends of the two hose sections, aligning the parts of the mark with orienting means on a T-connector during the step of telescoping the cut ends of the two hose sections onto the opposite ends of the T-connector so that such oriented relation is permanently maintained after a sleeve-like member has been injection molded from polymeric material over the cut ends of the hose section and a part of the T-connector body that is exposed between the cut ends of the two hose sections.

Abstract: A coupler for securing at least one pipe having a planar end. A hollow rigid coupler shell and a rigid tube stiffener are secured in the shell by a hub member, the stiffener having an external diameter less than an internal diameter of the pipe. The hub member has an internal diameter less than an external diameter of the pipe, the hub member having at least one tubular extension which will engage the pipe planar end. The coupler shell has a narrowing internal portion with a separate straight internal portion. At least one hollow follower is provided in the coupler shell straight portion adjacent the hub member tubular extension and at least one flexible hollow boot is movably retained within the coupler shell internal straight and narrowing portions, with a plurality of serrations being provided on an interior surface of the boot.

Abstract: A branched hose connector includes a branched inner pipe substantially made from a suitable lightweight material, a plurality of hoses connected onto the branched inner pipe, a cover covering the branched inner pipe and a portion of the hoses to join the branched inner pipe and the hoses, and an integrally formed flange projecting outwardly. The branched hose connector is lightweight so that it can be installed with ease via the flange, and it can be manufactured easily and less expensively. Further, the branched hose connector can include a valve member, and a convexity and a concavity provided on opposing end surfaces of the branched inner pipe and the valve member. With these extra features, the valve member can be tightened into the branched inner pipe with a predetermined appropriate torque by a manual operation alone, and it can resist loosening by vibrations, or the like.

Abstract: A hose connecting assembly comprises a connecting tube 1 made of a resin, flexible hoses 21, 22 and 23 each having a reinforced layer which is braided with reinforcing threads, into which the connecting tube 1 is inserted, and a resin cover 3 which covers coupling portions between the hoses and the connecting tube integrally therewith. The cover 3 is formed by molding and includes a reinforcing filler and has a post-shrinkage factor of 0.2 to 0.9%. The hoses have inner diameters which have been increased 10 to 30% by the insertion of the connecting tube 1 thereto. Stress cracks are prevented from occurring and high sealing pressure is provided.

Abstract: In a conveyer system including a tubular guide way having a curved guide way section, a magnet-mounted inner slider slidably disposed in the tubular guide way, a pressure source connected to the tubular guide way to feed the interior thereof with a pressurized air thereby to move the inner slider in and along the tubular guide way, and a magnet-mounted outer slider movably disposed on said tubular guide way. The magnet of the outer slider establishes a magnetic connection with the magnet of the inner slider so that movement of said inner slider can induce movement of the outer slider in the same direction. In order to smooth the movement of the inner slider in the tubular guide way, the inner slider is so constructed as to be flexed along its longitudinal axis when an external force is applied thereto.

Abstract: A coupling device for joining ends of pipes together or capping an end of a single pipe. The device includes a metal insert having serrations for engaging an inner surface of a plastic pipe, a deformable coupling member which overlies the pipe and a metal ring of smaller inner diameter than the outer diameter of the coupling member for compressing the coupling member and plastic pipe against the metal insert. A space forming feature reduces the insertion force required to slide the metal ring over the coupling member. For instance, the metal insert can include a circumferentially extending groove on an outer surface to accommodate flow of the plastic pipe as it is deformed by the metal ring. Alternatively, the coupling member can include a recess, groove or projection, the inner surface of the coupling member can be tapered, the end of the plastic pipe can be tapered or a compressible member or a ball bearing can be inserted between the end of the pipe and the coupling member to accomplish the same result.

Abstract: The present invention is a unitary pipe coupler having an internally mounted hollow tube stiffener which extends through the coupler. The stiffener serves as a guide over which ends of the pipes slide as the pipes are inserted into the coupler and provides communication within the coupler between the two pipes. As the pipes are inserted into the coupler, each pipe passes consecutively through an opening provided in the coupler, an O-ring, a plurality of rigid backward oriented gripper serrations provided on a gripper, a plurality of backward oriented flexible sealing serrations provided on a front boot seal, until the end of each pipe rests against a flexible boot seal which abuts a hub for mounting the stiffener to the coupler. The gripper serrations prevent the pipes from being pulled or pushed outwardly away from the coupler.

Abstract: A coupling apparatus is provided for quick coupling of pumping equipment to a cylindrical member.

Abstract: In order to easily automate the coupling work of a pipe and a hose without damaging the mechanical strength of the structure, a hose with a coupling portion includes a nipple, a hose inserted into the end portion of the nipple, and a resin covering portion integrally covering the coupled portion of the hose and the pipe, the hose being previously configured to include a general part having an inner diameter equal to that of the nipple, a first enlarged part having a diameter enlarged at the fore end of the general part, the inner diameter of the enlarged part being smaller than the outer diameter of the nipple, and a second enlarged part having an inner diameter which gradually increases starting from the fore end of the first enlarged part and becoming larger than the outer diameter of the nipple, the first and second enlarged parts being applied to the nipple.

Abstract: A method and apparatus for coupling pipe, and installing coupled pipe in a trenchless installation, the pipe being adapted for use as a watermain or the like. Lengths of watermain pipe are provided with a bell at each end, and connecting nipples adapted to be received within opposing bells, to effect a fluid-tight seal. As lengths of watermain are urged into a trenchless tunnel, opposing bell-end faces withstand the force being exerted on the pipe sections, so that damage is avoided and a sealed underground pipe installation is economically and quickly effected.

Abstract: A connection for flexible tubes includes a rigid tubular insert with at least two ends onto which the ends of flexible tubes are force-fitted. A cover of plastics material is moulded over the tubular insert and over the ends of the tubes. At least one respective integral, circular sealing lip projects from the internal surface of the end of each tube and engages the external surface of the corresponding end of the insert.