Abstract: Described is an improved pipe fitting of the self-locking quick action type wherein the leakproof seal is provided by a forced insertion of the extremity of a pipe inside a conical seat without utilizing any gasket of resilient material and wherein the release of the pipe anchoring means may take place only rotating an external crown of a plug in a stable position visibly recognizable by alignment or off-setting of two external indexes.

Abstract: A connector for firmly engaging the exterior annular ribs on non-metallic conduit includes a tubular sleeve with a stop wall at one end, the stop wall having an opening therethrough. Several latch tabs are formed in the side wall of the sleeve, the tabs being inclined inwardly so that the ends of them extend into the interior of the sleeve. When a piece of conduit is inserted until it abuts the stop wall, the tabs snap into recesses adjacent the end rings. On the other side of the stop wall are hook members to engage the opening in a junction box or an identical sleeve for engaging a second piece of conduit.

Abstract: A plastic Tee fitting formed by a main conduit body and an internally threaded adapter connected to the body at a right angle. The adapter is arranged end to end with a hollow neck which projects from the wall of the main body around a circular opening in the wall. The joint between the neck and adapter is strenghtened by an insert which is fitted in and glued to the neck and adapter on the inside and by a spout which is sleeved around and glued to the neck and adapter on the outside.

Abstract: Mounting boards for supporting and connecting fluid power components are secured together with dovetail clips to make up arrays with a large number of terminals. There are grooves in end faces of the boards so as to define marginal lands which are engaged by the clips. The lands of adjacent boards form a complete dovetail structure to be gripped by a clip with a self-locking action. The contiguous faces of adjacent boards may have locating means such as pins and recesses. The boards may have spigots protruding from them for connection with piping. Venting ports are provided with muffler caps.

Abstract: A coupling for joining the open ends of unthreaded pipe sections is disclosed which includes a first coupling member adapted to be fitted over and adhered to the open end of one of the pipe sections and a second coupling member having a portion thereof fitted over and adhered to the open end of the other pipe section and a portion thereof adapted to be fitted on and adhered to the first coupling member. The first coupling member is designed so that the end thereof can be brought into abutting relationship with the open end of the pipe section containing the other coupling member while maintaining the longitudinal axis of both of the pipe sections parallel to each other at all times.

Abstract: An in-line pipe coupling comprising a joint housing which encloses a piston means having a standard diameter pipe section which protrudes from one end of the joint housing may be compressed and inserted into a small cutaway section of existing pipeline and then expanded to fit over the two free ends of pipe, forming a continuous water-tight connection. The slip joint may be utilized in conjunction with either a standard straight pipe coupling or a T-coupling or cross coupling in order to facilitate addition of one or more branch lines to an existing pipeline.

Abstract: A universal septic tank fitting useful as either an inlet sweep or an outlet tee includes a generally tubular member having first and second open ends with a portion of the tubular member adjacent the first end forming an angular bend so that the first end extends generally normal to the member. A tube adjacent the second end extends from the tubular member and in a direction generally opposite to the direction of the first end. A vent is provided along the outer periphery of the angular bend, and a removable closure over the vent is provided. In use, the first end is installed in the inlet wall of a septic tank elevated above the second end, and the closure is removed from over the vent. The same fitting may be used as an outlet tee by installing the extremity of the tube through the outlet wall of the septic tank, elevated with respect to the first end.

Abstract: A raintight and oiltight connector is disclosed for securing an electrical conduit for an electrical enclosure. The connector includes first and second housing members which are rotatably attached and supports the conduit at one end and can be screw inserted into a threaded opening of an electrical enclosure at the other end.

Abstract: The invention relates to a T-shaped hose composed of three branches made of rubber or similar material with a fabric lining. The three branches are arranged in the form of a "T", but are spaced apart from one another so as to define an uninterrupted, circumferentially-extending gap therebetween. The gap is then closed by a separate rubber compound. A non-adhering T-shaped tubular support made of rigid and thermally stable material is arranged in the interior of the hose within the T-zone, while the exterior T-zone of the hose is covered by a rubber layer.

Abstract: A press fitted coupling device for fluid flow systems having fluid flow conduits with luer type connectors thereon such as those systems as are used in medical and surgical applications acts to convert a luer type male connector to a male luer lock fitting by means of an internally threaded annular collar having an annular locking member preferably disc shaped snap fitted therewithin. The inner periphery of the locking member is sized and dimensioned to slip over the male luer type connector on one of the fluid flow conduits and to engage an anchor thereon adjacent the root section of the male luer type connector so as to hold the coupling device in assembled position.

Abstract: In the manufacture of a pipe part from fibre-reinforced thermosetting resin, such as a T-piece, preformed pipe parts made of fibre-reinforced thermosetting resin are placed on a mandrel defining the inside shape of the pipe part, the external surface of the mandrel being partially covered. The space between the mandrel and the inside of the pre-formed pipe parts is sealed and the parts of the pre-formed pipe parts adjacent to the uncovered part of the mandrel are chamfered on the outside. Synthetic resin impregnated fibres are then applied to the uncovered part of the mandrel and to at least the chamfered parts of the preformed pipe parts placed on the mandrel, until the pipe part has reached the desired final shape, after which it is cured and the mandrel is removed from the finished pipe part.

Abstract: An adhesive composition and a method for its use in bonding rigid PVC elements. The adhesive composition comprises: (1) a first dissolved PVC polymer having a K-value of about 58 .+-. and a second dissolved PVC polymer having a K-value of about 45 to about 52; (2) at least one cyclic organic solvent; and (3) at least one non-cyclic organic solvent.

Abstract: New and improved connector is provided for the zero dead volume connection of separate, like diameter flexible tubing lengths by direct tubing length end abutment and connection under controlled conditions. The connector is particularly adapted for use with tubing lengths of fluorocarbon or like materials in contemporary biomedical sample liquid analysis systems which utilize an immiscible isolation liquid or "oil" to minimize sample liquid carryover and maximize the accuracy of sample liquid analysis results.

Abstract: A device for metering the flow of a liquid medium passing therethrough comprises a plastic stem member having a cylindrical metering drum element projecting into and rotatively engaged in liquid tight relation with the cylindrical wall of a bore chamber in a body member to rotatively mount the stem member therein. A diametrically slotted headed stud projecting endwise from the drum element is contracted and inserted through a bore opening in the end wall of the chamber in the body member to cause the head end of the stud to snap-lock behind the chamber end wall and thus secure the stem and body members together in assembled rotative relation.

Abstract: Disclosed is a clamping element, in the form of an annular disk, for a pipe coupling between the ends of two butt-joined pipes. Each pipe carries a flange or the like loosely slipped onto its respective end. The flanges may be braced against one another, and each flange is provided with a clamp chamber into which a clamping element placed onto each of the pipe ends fits. The clamping element is held on the end of the pipe by means of an inner, radial clamping edge. A clamping surface of the clamp chamber overlaps the clamping element with respect to an outward, radial clamping edge. The clamping element has such a configuration in the axial direction that an axial compression force applied to the element results in an increase in its external diameter and a decrease in its internal diameter. This results in a seal which surrounds the impact point of the joint.

Abstract: A tube joint comprising (1) a tube joint body including a tubular guide, on at least one side thereof, for receiving a tube thereon, said guide having a groove in the circumference of the end portion thereof, (2) a clamping ring including a tubular portion which has external threads and a plurality of slits extending from said external threads to the end portion thereof in the direction of the axis, said tubular portion being concentrically positioned around the guide of the tube joint body with a space therebetween which is large enough to receive the tube therein in such a manner that the end portion of the tubular portion containing the slit area corresponds to the groove in the guide, and (3) a cap nut having internal threads in one end portion thereof, which engage with the external threads of the clamping ring, and the tapered portion of the interior surface of the other end portion having an aperture therein which is greater in diameter than the outer diameter of the tube, tightening of said cap nut ot

Abstract: A coupling apparatus and method is disclosed for coupling a first and a second hose to enable the flow of fluid therethrough upon the application of fluid pressure comprising a first coupling member having a first internal bore connected to the first hose. A second coupling member having a second internal bore is connected to the second hose. A first and second major thread is disposed on the first and second coupling member, respectively. The first coupling member is insertable into the second coupling member with the first major thread threadably engaging the second major thread. The first and second coupling member being constructed of a resilient and deformable material for enabling radial expansion of the first and second coupling member upon the application of the fluid pressure.

Abstract: A gasket particularly suited for providing a leak resistant, deflection tolerant seal for a bell and spigot type of pipe coupling is provided. The gasket comprises a rubber web having a plurality of identical sealing ribs projecting radially inward in axially spaced relation. Each rib has an enlarged tapered base portion and a narrow finger portion which inclines inwardly and axially therefrom in cantilever fashion and which terminates in a tip spaced radially from the base of an axially adjacent rib. The finger portions are deflected into engagement with their adjacent sealing ribs when the spigot portion of one pipe is inserted axially into the bell portion of the other in which the gasket is mounted. The sealing ring prevent leakage even when the coupled pipes are misaligned slightly.

Abstract: A polybutylene tubing coupling and method of making that coupling utilizes a male tubular connector element having the same inside diameter as the major extent of the tubing. A coupling element is provided with stop shoulder at one end and a series of annular radially projecting barbs on its outside diameter which are preferably undercut in the direction of the stop shoulder or tubing end. An end of the tube is treated preferably by heating to enable the material to expand and the tubing end is inserted on or slipped over the male element against the stop shoulder. In such position the treated tubing end is mechanically compressed between two semi-circular dies to cause the material of the treated tubing end to flow around the barbs. Thereafter a metal crimp is placed around the tubing end between the stop shoulder and the next adjacent barb, or over the top of one or all barbs. The tubing connection thus formed is then permitted to cool at ambient temperature for approximately 7 days.

Abstract: A pipe connection of a first and a second fibre reinforced plastic pipe by accommodating a free end portion of each pipe in a centering plastic pipe part, an adhesive layer being present between the inner side of the centering pipe part and the outer side of the free end portions. A reinforcing layer extends over the centering pipe part and over parts of the first and second pipe part adjoining the free ends of the centering pipe part, preferably the centering pipe part has a smaller wall thickness than the wall thickness of the first and second pipe parts.The free end portions have a smaller wall thickness than the wall thickness of the centering pipe part.The centering pipe part may be formed as a bend, or part of a saddle or branch saddle and consists of a reinforced thermosetting plastic material.The bend may be formed from a plurality of standard bend parts of relatively small length, e.g. 5.degree. or 10.degree.

Abstract: A sealing adapter hoop (6) designed to be sealingly slip fitted over conduits of differing structure (2,4) including chamferred ends (14,22), a smooth surface (20) to interact with a captured O-ring (30) and a groove (16) to accept a second O-ring (18).

Abstract: A metal or plastic coupling connector (14) is secured to the end portion of a flexible thermoplastic pipe (12) by means of a plurality of thermoplastic plugs (22), (23) (24) which are positioned through access holes (18), (19) and (20) in coupling connector (14) and which are fused to the walls of the flexible plastic pipe (12) to form an integral part thereof. The plugs (22), (23), (24) prevent both longitudinal and rotational movement of coupling connector (14) relative to plastic pipe (12).

Abstract: The present invention relates to a high impact hose coupling having a hollow body constructed of plastic, a helical restriction means to hold the hose end within the coupling body, a double locking means for locking coupling halves together, and a static electric conducting gasket to allow the conduction of static electricity within the coupling.

Abstract: A vacuum or pressure coupling device comprises mateable body members, each provided with means for connection to tubular members and at least one of the body members being formed of material sufficiently resilient and distorable for maintaining the body members in sealing engagement with one another.

Abstract: A branched hose construction, a T-connector therefor and methods of making the same are provided, the branched hose construction comprising T-connector having a body portion provided with a pair of substantially oppositely directed legs extending therefrom and an outwardly directed branch leg extending therefrom intermediate said pair of legs, and three tubular hoses respectively telescoped onto the legs to be disposed in fluid communication with each other through the T-connector, the body portion of the T-connector having an annular shoulder adjacent each leg thereof against which an annular end surface of its respective hose abuts and which is of a size that causes the external peripheral surface of that respective hose to substantially mate with and thereby be substantially flush with the external peripheral surface of the body portion that is adjacent that respective hose.

Abstract: Joint for telescoping pipe sections including aligned recesses in both sections, sealing gaskets spaced apart from both edges of the recesses and compressed against both pipe sections, and solidifiable grout filling the recesses and all space between the sealing gaskets. A method of laying pipe sections underground and sealing the pipe joints from above ground.

Abstract: The disclosure relates to a tap or valve body (10) having a bore (11) to receive a tube which is locked in the bore by means of a collet form tube coupling (21) and is sealed to the bore by O-ring seals 17, 18. The collet is encircled by a plastics insert sleeve (22) located in a counter-bore (19) at the end of bore 11 and held therein by a spring ring (39) embedded in the sleeve. The insert sleeve has a tapered bore (27) which converges towards the end of the tape or valve body and with which resilient fingers (32) of the collet engage to be compressed around the tube by the convergent bore to grip and hold the tube in the body.

Abstract: The disclosure relates to tube couplings in which a hollow body (10) has an opening (11) to receive a tube (15) and a collet (32) having resilient arms encircling the tube in the body to grip the tube. An annular cam (22) is mounted in the body and has a tapered internal cam surface (31) engaged by the collet arms (33) which reduces towards the open end of the body to increase compression of the arms against the tube as the collet is drawn towards the open end of the body to lock the tube in the body. The cam member (27) is mounted in the body for axial adjustment with respect to the body, for example by a screw engagement (28) in the body, to enable the cam to be adjusted with respect to the collet to vary the compressive force applied to the resilient arms.

Abstract: A fitting formed with a circular flange formed coaxially with a spigot which is formed along its length with a series of frusto-conically shaped, axially spaced apart, sealing rings which are formed at their enlarged ends with respective annular holding rings. A metallic stiffener tube is received telescopically in the fitting to provide support against radial inward collapse thereof. The spigot may be formed adjacent the flange with an enlarged in diameter centering shoulder and may be formed at its extremity remote from the flange with a reduced in diameter stress relief nipple. A finishing sleeve is provided for telescopical receipt over a polyethelene pipe fitted over the spigot. Thus the spigot may be inserted into the end of the plastic pipe to expand such pipe to an expanded configuration.

Abstract: A quick-connect tube coupling includes a body member having a bore for receiving the end of a tube, a first counterbore adjacent the outer end of the body member for receipt of an annular ring portion of a gripper ring surrounding the tube, and a second smaller diameter counterbore between the bore and first counterbore for receipt of radially and axially inwardly extending gripper ring fingers. The second counterbore provides limited and controlled outward deflection of the gripper ring fingers when a pulling force is applied to the tube so that the fingers bite into the tube surface preventing the tube from being pulled out of the coupling. A hand-threaded nut on the outer end of the body member retains the gripper ring within the body member when a pulling force is applied to the tube. An O-ring seal is also desirably contained within the first counterbore axially outwardly of the gripper ring to form a seal between the tube and body member.

Abstract: A tubing connector system particularly suitable for use with medical prostheses is disclosed. The system involves of a connector assembly and a connector assembly tool. The connector assembly is composed of a clamping ring and connector body which can be coupled together to connect two lengths of tubing. The connector assembly grips the tubing by compression, advantageously forming an outwardly flared tubing end portion that aids in retaining the tubing within the connector assembly. The connector assembly tool possesses jaws designed to receive and hold the connector assembly members in a nested relation as the tool closes, joining the connector assembly members.

Abstract: A pipe joint wherein an annular connecting resin body in contact and engagement with the outer periphery of one end of at least one pipe is used for connecting the end of the pipe to one end of another pipe. The joint comprises a device for reinforcing the bond between said one pipe and the connecting resin body in addition to sanding provided for the outer periphery of the end of said one pipe. The bond reinforcing device is a barbed wire, barbed tape, piano wire or the combination of engaging grooves and engaging projections, which prevents the axial displacement of said one pipe relative to the resin body to avoid cracking due to such displacement.

Abstract: A pipe connection in which an improved method and apparatus for forming a quick-coupling connecting nipple for plastic pipe is disclosed. A plastic pipe section having an annular groove perpendicular to the axis of the pipe is disposed about the periphery of the pipe section at a longitudinal distance from the first end of the pipe section. A steel sleeve is friction fitted about the plastic pipe section and a groove is rolled about the outer periphery of the sleeve to present an annular shoulder disposed within the inner periphery of the sleeve. The shoulder of the sleeve snaps into the groove of the plastic pipe section. The other end of the sleeve is crimped inwardly into the pipe surface so that the sleeve is substantially flush with the outer diameter of the pipe section.

Abstract: For mounting a protective sleeve of plastic over a joint between prefabricated heat insulated pipes, typically subterranean district heating pipes, an axially split plastic sleeve is inserted laterally over the joint so as to bridge the opposed ends of outer protective plastic tubes of the joined pipes. A plastic welding strip provided with a number of embedded parallel heating wires, is placed along and over the relevant annular joint with its opposed ends located spaced from each other adjacent the axial split of the sleeve. The ends of the strip are provided with terminals for parallel connection of the embedded wires, and the wires are electrically heated to weld together the welding strip and the two plastic tube ends. The axial split is then scaled by a similar welding strip.

Abstract: In one form of the invention, the swivel hose couplings include two parts, a swivel insert which may be threaded or otherwise attached to the end of the hose, and a swivel hose end piece which has an internal groove therein in which an exterior portion of the swivel is rotatably received. A sealing lip may be provided on the exterior of the swivel insert to form a seal with the wall of the internal groove in the swivel hose end piece. Also, a skirt portion may be provided on the swivel hose end piece which extends axially into the end of the hose to shield the axial outer end of the swivel insert and hose end against entrained material in the fluid passing through the coupling from entering the swivel connection between the swivel insert and swivel hose end piece.

Abstract: A molded tapping fitting is made up of a saddle piece to be secured to a pipeline to be tapped, a tapping connection member and a branch connection line attached to the saddle piece. In combination, the saddle piece, the tapping connection member and the branch connection line form a chamber opening through the saddle piece into the pipeline. The interior of the chamber is shaped to facilitate the deflection of flow from the pipeline into the branch connection line.

Abstract: A structure at a connection where at least two resin pipes are connected to each other end-to-end. The structure is characterized by annular resin body means provided on the inner periphery of the end of at least one of the resin pipes and having at least one end positioned in an annular recessed portion formed in the inner periphery of said one resin pipe. Since the above-mentioned end (which is more subject to the action of internal fluid than the other end) is positioned in the annular recessed portion, the resin body means is not eroded by the internal fluid.

Abstract: An improved coupling (10) to be embedded in concrete (101) is described. The coupling includes multiple concentric rings (11c) on an outside wall (11a) of a tube (11) which aid in preventing leakage along the outside wall and which help in providing fire retardancy. The coupling includes a step form (14) having a regular diameter which aids in positioning the coupling using a template (105).

Abstract: A conduit coupling having in one embodiment a coupling body, a union nut adapted to slip over the free end of the coupling body, and a clip cooperative with a special configuration of the coupling body to engage the nut and prevent its inadvertent separation from the body. Various forms of clip are disclosed. In another embodiment of the coupling the body includes an annular section having a raised portion, a resilient band mounted upon the annular section, and a ring having a venting opening and rotatable upon the band to vent the interior of the coupling whenever the venting opening is out of alignment with the raised portion.

Abstract: A pair of pipe members are joined together in a flange connection assembly particularly suited for fiber-reinforced plastic components, the pipe members being formed to include an inner pipe jacked consisting essentially of a thermoplastic material and an outer pipe jacket consisting essentially of a fiber winding impregnated with a snythetic resin. A threaded section is formed in each of the outer pipe jackets at the end of each of the pipe members, a flange bushing is provided with a loose flange ring threadedly engaged on each of the threaded sections and a covering collar covering at least the end of each of the pipe members is inserted at the inner pipe jacket.

Abstract: A quick-coupling connector for an air valve comprising, in one-piece molded plastic construction, a body for receiving the air valve, an operating member rockably mounted on the body about a pivot axis, a strap which defines a preloaded leaf spring joining the operating member to the body and defining a preloaded leaf spring for urging a clamping member carried by the operating member toward a clamping position.

Abstract: A strong joint for hoses for the cooling and crankcase ventilation systems of vehicles is made between a hose 1 and a branch by inserting the flared end 3 of a rigid cylindrical insert 4 into a hole 9 in the hose 1 to distort the margin around the hole. A second hose 6 is then positioned over the insert 4 so that its end abuts the margin of the hole and the joint is sealed and secured by an encapsulation which is vulcanized in situ.A curable polymeric liner 5 may be sandwiched between the insert 4 and the spout 6 and also vulcanized to act as a bond.The second hose may be omitted, leaving the insert as a projection to which a second hose may be fitted by other means.

Abstract: A thrust restrainer for a joint in a pipeline between a plain end of a synthetic plastic pipe and a fitting comprises a pair of semicylindrical moulded half sleeves bolted together through diametrically extending flange portions, the half sleeves having at one end an internal profile complementary to that of the fitting, and at its other end a semicylindrical internal profile matching the external surface of the pipe, the semicylindrical profile including a plurality of parallel serrations which deform the material of the pipe into engagement with the serrations on bolting together of the half sleeves.

Abstract: A universal connector for a fluid flow conduit comprises a tubular connector for attachment at one end to the fluid flow conduit and defining a luer taper tube portion at its other end. A sleeve is carried by and surrounding the tubular connector in relatively rotatable relation thereto. The sleeve defines internal threads for threaded locking connection with another connector. A tubular member having external threads at one end is locked by said external thread in removable threaded locking connection with the internal threads. The tubular member defines at its other end an aperture for sealingly receiving a spike connector.

Abstract: A protective plastic sleeve device is provided to be wrapped around, and hence to seal, the juncture along a joined series of elongated pipes, cables, conduits or similar members. The sleeve device includes a plastic sheet whose end portions are folded back and attached, to form a pair of passageways. Rods extend through each of the passageways. Apertures are provided along the end portions to communicate with the passageways. Engagement means, advantageously in the form of alternative male and female members, project from the rods through the apertures to interlock the rods together and hence retain the end portions of the sheet in juxtaposed confronting relationship.

Abstract: A plastic pipe fitting includes a mounting section to be secured to a main pipe and a stem and a collar for receiving an end of a branch pipe. Flexible arms extend partially around the main pipe diverging from the outside surface of that pipe. The fitting is bonded to the main pipe by plastic plumbing solvent. Projections at the ends of the fitting's arms facilitate clamping tightly against the main pipe and receive connectors of a special clamping tool. The pipe includes a first connector, and an elastic member connected to the first connector and extending to a lever. The lever ends in a second connector and has a handle for pivoting the lever. Pivoting the lever with the two connectors in place flexes the arms inward and forces all contacting surfaces of the fitting and pipe into extremely high pressure contact for bonding. Once fitting and main pipe are bonded, the clamping tool is removed, a hole saw directed through the stem opens a hole into the main pipe.

Abstract: A fiber reinforced plastic pipe tee is formed by winding glass rovings around a mandrel in a plurality of wrap patterns which collectively cover the pipe tee. A tape having synthetic fiber warp and glass roving weft is included in wrapping of the pipe tee. Such glass reinforcing fibers are oriented in the tee for resisting biaxial stresses. A bulge is provided on each side of the pipe tee in the diaphragm area for resisting biaxial stresses without introducing problems in winding the pipe tee.

Abstract: A method of assembling a pipeline system and the pipeline system resulting therefrom involves providing pipes and associated conduit members with plural axially spaced key engagement members adjacent the ends thereof, and securing adjacent ends of the pipes and conduit members to each other using segmented couplings having plural axially spaced keys corresponding with the key engagement members, the engagement surfaces of the keys having an inversely pebbled surface produced in the casting of the segments of the coupling and which is intentionally left unfinished, such that pressurization of the pipeline system and the axial loading produced thereby will cause the inversely pebbled surfaces of the respective keys to crush down and cold work the engaged faces of the engagement members to progressively produce substantially uniform stress distribution between the respective keys and engagement members.

Abstract: A seal for a gas meter coupling nut comprising a ring-shaped housing formed of two separate but identical halves made of relatively brittle molded plastic and having integrally molded fastening means for snapping together the two halves into locking non-removable engagement. The two halves are shaped and dimensioned to be freely, laterally movable a small but appreciable amount relative to each other when locked so that tapping said housing will produce a rattle-like sound thereby indicating that the seal has not been broken open and the halves glued back together.

Abstract: A connector for joining the ends of flexible hoses comprising a one-piece moldable plastic body of light weight construction with hose engaging barbs at each end and supporting ribs in the midspan between the end barbs for sustaining the wall of the body against internal pressure, the one-piece body being free of the requirement to seal or sonically weld parts in final assembly.