Abstract: A separation preventive pipe joint is provided. A locking ring provided on an inner periphery of a socket is engaged with a projection formed on an outer periphery of an end portion of a spigot to prevent the spigot from being separated from the socket. When the spigot is to move deeper in the socket, a sleeve provided inside the socket abuts the end of the spigot to prevent the movement of the spigot. The movement of the spigot may otherwise be prevented by locating a deeper end face of the socket adjacent to the projection of the spigot. The projection fills up a clearance between the outer periphery of the spigot and the inner periphery of an open end portion of the socket, thereby preventing the spigot and the socket from bending relative to each other. The clearance may otherwise be filled up by means of a ring disposed on the inner periphery of the socket and bolts to be screwed into the socket from the outer periphery thereof to press the ring against the outer periphery of the spigot.

Abstract: A wedge assembly restraint, featuring clip stops and a flexible, resilient retainer clip, for restraining a wedge assembly in the clamping block of a pipe junction holder.

Abstract: A method of and rounding devices for inserting an out-of-round pipe spigot into a pipe bell by installing the rounding devices on the open end of the pipe bell. The rounding devices have cam surfaces for engaging the end of the out-of-round spigot and have sufficient strength and stiffness to deform the out-of-round into a substantially circular cross sectional configuration upon application of insertion force between the bell and spigot. The rounding devices may be removed and reused after the bell and spigot joint is assembled.

Abstract: Mechanical pipe adapters are provided by this invention which include a gland for fitting around the circumference of a first pipe. The gland includes an annular recess located along its inner diameter and an aperture through a side wall of the gland for communicating with the annular recess. The adapter further includes a flexible spline inserted into the annular recess through the side aperture. The flexible spline forms a mechanical lock between the first pipe and the gland. After mounting the gland to a pipe, such as a PVC pipe, the gland can be thereafter mounted to a flanged end of a pipe, e.g., a cast iron fitting.

Abstract: The plug-in socket joint secured against sliding movement is intended for socket pipes (1) manufactured by centrifugal casting, in which the spigot end (3) of one pipe may be inserted with radial play into the socket end (2) of the other pipe. In this joint, a sealing ring (8) and a clamping ring (14) structurally separate therefrom are arranged, said clamping ring being composed of a plurality of clamping segments (15) spaced from one another in peripheral direction. The latter have a spherical outer shell surface (17), are connected to each other in peripheral direction by means of a moulded-on intermediate layer of rubber or similar and each have a toothing (19) on their inner surface (18).

Abstract: Lengths of ribbed tube (10) having ribs which upstand appreciably from the main body of the tube may be coupled together using novel coupling ends (12, 112 and 14, 114, 214) of the tube. Alternatively, such ribbed tube may be coupled to plain walled tube (100). The lengths of tube are provided with first and second cuffed ends, the first end being a smooth walled cuff having a cuff having only shallow ribs reduced height and the second end being belled to couple with a first end of another tube or with plain walled tube smooth first end and the billed second end may be formed to respective outer and inner diameters for good sealing between them.

Abstract: A swivelable quick connect assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal is disposed in the bore for providing a fluid tight seal between confronting portions of the conduit and the housing, an annular bushing is disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer is detachably secured to the housing and is cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer having resilient deformable portions which are adapted to snap over the locking wall upon insertion of the conduit into the housing bore.

Abstract: An improved mechanical pipe joint for use in a bell and plain pipe end assembly. The joint includes a gland having a conical cavity for receiving a toothed split ring that coaxially compresses and grips the plain pipe end as the gland is tightened to the bell. The joint is sealed by a compressible gasket positioned between the split ring and the bell. The gland further includes an integrally formed, radially extending shelf for abutting against the split ring and mechanically stopping the gland from being pulled over the split ring during joint assembly.

Abstract: The spigot-and-socket joint which is secured against sliding is designated to connect the spigot end (3) of a pipe which can be slid into the socket end (2) of another pipe, with radial play existing. In the socket end there are arranged a sealing ring (8) and a separate clamping ring (14) comprising a plurality of circumferentially extending, spaced clamping segments (15) having a spherically convex outer surface (17) and, on an inner surface, a tooth system (19) which, in the presence of axial forces, presses radially onto the spigot end (3) as the spherically convex surface (17) cooperates with a pipe socket's inner surface (18) which tapers conically towards the end. An elastomeric support member (20), which can be fixed in its position at the socket front end and supports the same, is provided on the clamping ring (14).

Abstract: A load segment assembly for use in pipe swivel joints or pipe connectors locks male and female hubs of a joint together while providing an axial bearing therebetween. The load assembly includes arcuate segments each having a dove-tail groove on the face of the convex side of the arcuate segment, requiring a flexible joining member to be threaded therethrough, providing maximum shear and bearing strength.

Abstract: A pipe coupling arrangement is directed to a coupling body fitted on at least one of a pair of pipes to connect the pipes with one another. The coupling arrangement includes a protruded portion formed on the outer periphery of each of the pipes, an annular sleeve having an inner wall therein being engageable with the protruded portion, the sleeve being provided in a space between the outer periphery of the pipe and the inner periphery of the coupling body, a threaded hole inwardly and slantingly formed in the coupling body closer to one end thereof for arresting the slipping off of the sleeve from the coupling body, a cut-away face formed on the outer periphery of the sleeve, the cut-away face having a tilt angle perpendicular to that of the threaded hole, and a fastening member screwed into the threaded hole such that the tip portion of the fastening member can abut against the cut-away face.

Abstract: A locking device for a system of laid pipes comprises a gasket 2 and one or more assembled components which form a hollow cylinder 4 surrounding and accommodating the gasket, the hollow cylinder incorporating an anchoring groove 8. The gasket is elastic and has a solid body portion 9, an integral annular heel member 10, and a plurality of embedded anchoring inserts.

Abstract: A socket joint for ductile cast iron pipes is locked by toothed locking ring inserts 15 and a counter-flange 11. At least one elastic lip 19 is inserted between the locking ring and the rear face of a rigid stop ring which encloses the smooth or male end of the pipe 1.

Abstract: The spigot-and-socket joint which is secured against sliding is designated for moulded parts and for socket pipes (1) produced by the centrifugal casting technique, with the spigot end (3) of the one pipe adapted to be slid, with radial play, into the socket end (2) of the other pipe. In the socket end there are arranged a sealing ring (8) and a separate clamping ring (14) comprising a plurality of circumferentially extending, spaced clamping segments (15) having a spherically convex outer surface (17) and, on their inner surface (18), a tooth system (19) which, in the presence of axial forces, presses radially onto the spigot end (3) as the spherically convex surface (17) cooperates with a pipe socket's inner surface (18) which tapers conically towards the end. An elastomer support member (20), which can be fixed in its position at the socket face end and supports the same, is provided on the clamping ring (14).

Abstract: A stab joint coupling, for joining corrugated pipes, has a male connector and a female connector both having means for attachment to a first and second piece of pipe by engaging the corrugation of the pipe. A circumferential elastomeric sealing means is positioned between the joined coupling connectors to effect a substantial liquid seal for the joint. The coupling permits two pieces of corrugated pipe to be joined relatively inexpensively and quickly by workers in the field.

Abstract: Composite gasket for locked assembly between a first pipe T1 with a socket 15 and a second pipe T2 with a spigot 20.The gasket G comprises locking inserts 7 with a nose 11 for catching on the spigot 20. The inserts 7 are capable of an angular movement varying their inclination relative to the axis X--X of the gasket G.The invention is used for the locking of pipes having wide diametral production tolerances.

Abstract: A pipe joint and a locking member for use with the pipe joint are provided for a bell and spigot type joint, the locking member being a separate element disposed axially outwardly of a fluid seal gasket within the bell end of a first of the pipe elements, the locking member being made up of an elastomeric backing member and at least one locking segment, the elastomeric backing member being adapted to seat in a first annular recess in the bell end, and against a radially inwardly protruding shoulder, this seating position urging the outer surface of the locking segment into contact with the wall of the first annular recess, to effect a constant, positive wedging action against a spigot end of a second pipe element inserted into the bell end of the first pipe element.

Abstract: The invention relates to an insert for connecting a flexible tube to a shower head which has an axial pipe (13) and, externally, has keying (17) and sealed truing (15, 16) structure in a seat of said shower head. It has one elastic tab (19) with a tooth (20) able to clip into a hole (21') formed at the same level of said seat. The keying structure (17) prevents the rotation of the insert while the tooth prevents an axial unscrewing.

Abstract: An assembly for joining a section of pipe to a pipe fitting in which the pipe may be inserted into the fitting. The open face of the fitting has several J-shaped locks around its periphery into which locking lugs on a locking clamp may be inserted. The locking clamp includes a first and second locking clamp element each one being an annular one-half ring with a prong at one end and a cavity at the other to form a ring. The locking lug is on each such element and is adapted to fit into the J-shaped lock on the pipe fitting. The inner surface of the annular ring is provided with blades for embedment into the outside wall of the pipe as the two half rings are pulled together by tightening the bolts.

Abstract: An annular elastomeric gasket (3) for a female pipe socket includes locking elements (E) having an outer extremity 15 intended to bear against an inner surface of the socket and an inner extremity 18 intended to penetrate the outer surface of a male pipe end. The locking elements have shoulders (21) for limiting their penetration into the male pipe.

Abstract: Large and small seal ring segments are interconnected to allow for circumferentially overlapping sliding engagement therebetween. The seal ring segments form an annular seal ring having a radial flange which is mounted within an annular radial groove formed in one end of a conduit. An adjoining conduit is formed with a sealing band having a spherical contour for engaging a cylindrical base portion of the seal ring with an axially slidable and pivotable fit.

Abstract: A pipe restraining mechanism for use in a pipe retainer gland to secure the gland on a pipe such as PVC pipe and ductile iron pipe including a housing forming a part of the retainer gland and having a pocket therein opening inside of the gland, a wedge operator member on the top wall of the housing, and a pipe gripping wedge in the housing pocket having inside teeth for engagement with the outer surface of a pipe and adapted to be initially mechanically pressed into a pipe surface by the operator member and thereafter fully engaged with the pipe surface responsive to hydraulic pressure in the pipe causing a wedging action with the operator member and thereafter a turning action between the wedge and a housing surface to drive the wedge teeth into the pipe surface and seat the wedge on the pipe surface.

Abstract: A self-actuating restraining gasket having optional integral sealing means is provided which is used particularly in bell-and-spigot pipe joints or joints employing pipe appurtenances, and more particularly in joints to be assembled in the field, the bell end of the pipe or pipe appurtenance to be employed having an annular recess adapted to receive the gasket therein, the gasket further employing a plurality of pairs of cooperating metal retaining elements embedded in the elastomeric gasket, the pairs of retaining elements being spaced apart around the circumference of the gasket, each pair of retaining elements comprising a wedging member and a backing member for the wedging member, and wherein the pairs of retaining elements act as the self-actuating retention or restraining elements, and an optional compressible back part of the gasket acts as a fluid seal when a pipe spigot is inserted in the bell.

Abstract: A method of forming at the end portion of a thermoplastic material pipe in a pipe socket. The pipe end portion is molded around an annular sleeve onto which is bonded a sealing ring having an outer sealing ring adapted for sealing against the pipe end portion and an inner sealing ring, connected to the outer sealing ring, adapted for sealing against an outer surface of a spigot end of a connecting pipe introduced into the socket.

Abstract: A restrained pipe joint is provided for affixing the spigot end of a first pipe into the socket end of a second pipe. The pipe joint includes a circular restraining ring and a retainer ring which includes a groove ring and a plurality of locking segments. When the retaining ring is tightened, the retaining ring is forced against the circular restraining ring, thereby engaging the locking segment teeth into the spigot end of the first pipe. The groove ring abuts the circular restraining ring which holds the spigot end of the first pipe within the socket end of the second pipe.

Abstract: In the environment of telescoping pipes, a collapsible member is placed between a fixed weld and a locking segment so that when extraordinary forces are applied which tend to cause the pipes to be pulled apart, the crushing element absorbs the excessive forces and prevents its disengagement.

Abstract: This invention pertains to bolted mechanical pipe joints using toothed gripper rings to prevent separation of the pipe.

Abstract: An elastomer packing 2 for male/female pipe joints is fitted with peripherally distributed, inserted or embedded locking elements E having a "seven" or T shape. The insertion of the male pipe into the female socket compresses the packing to establish a seal, and rotates the locking elements inwardly. Any withdrawal movements of the male pipe are halted by the counterrotation of the locking elements, whose beveled inner edges bite into the male pipe surface in a wedge like manner.

Abstract: A mechanical pipe joint comprising a substantially cylindrical body integrally formed with a plurality of pipe restraining members, and a plurality of pipe clamping members, each comprising at least one block slidably engaged with a pipe restraining member, a compressible gasket for graduating suddenly applied forces, and restraining bolts. The clamping system, acting to distribute the clamping forces on a large portion of the surface area of a pipe, simultaneously absorbs and graduates suddenly applied forces, preventing failure of the pipe point.

Abstract: Bell and spigot pipes are joined coaxially with a compressed gasket and are largely surrounded by a layer of insulation. A sleeve surrounds the joint so made and is sealed to the respective pipes and is filled with a foam insulator.

Abstract: A pipe coupling assembly for plain end pipe of the type in which a packing ring is compressed in an internal groove by a thrust ring to squeeze it against the outer surface of the pipe and effect a seal therewith. The thrust ring is made of a plurality of accurate segments which can be economically produced and assembled in the coupling body. The segments are mechanically interlocked in the body by cooperation with other elements of the assembly to avoid separate retainer members. The segments have a configuration which avoids significant circumferential gaps in the packing compression face of the ring and reduces the necessary axial length of the groove.

Abstract: This invention pertains to a pipe joint which allows greater joint deflection by the use of a bell stub between a pair of coupled pipes. The bell stub has a bell contour inside and a plain end contour outside.

Abstract: An improved form of articulated, segmented ring structure for an axially restrained pipe joint has an articulated, segmented ring formed from articularly interconnected ring segments and a ring adjustment mechanism operable from the exterior of the pipe joint for radially contracting the ring onto the spigot end of one pipe received within the bell end of another pipe. The segmented ring structure provides improved flexiblity in joint assembly and enhanced deflection characteristics for accommodating axial misalignment of the pipes. A ring adjustment mechanism is disclosed which is particularly suitable for use in many cases, including underwater and other limited visibility applications.

Abstract: The invention concerns pipe joints in which an improved locking segment has an outwardly extending protrusion which is adapted to abut a circumferential wall in the bell end of a pipe which telescopically receives a second pipe.

Abstract: A separation preventive pipe joint comprises a socket and a spigot inserted into the socket with an annular packing interposed therebetween. An annular gland connected to the socket has an axial packing presser projection and is internally provided wtih an annular receptacle groove. Arcuate engaging segments are incliningly disposed in a circular arrangement within the receptacle groove and retained there by elastic distancing members. The engaging segments are radially inwardly pressed by pressing bolts to engage in the spigot outer periphery. Each engaging the segment elastically deforms in a manner of a Belleville spring in response toseparating movement of the spigot to assume a posture generally perpendicular to the spigot outer periphery so that the engaging element engages in the spigot outer periphery more firmly.

Abstract: Mechanical pipe joints and methods of forming same, wherein pipe ends are first prestrained into expanded bell and expanded pin shapes and then again strained by interference joining, both prestraining and subsequent straining being under controlled conditions which take maximum advantage of the metallurgical and physical properties of the materials to provide improved connection strength produced through approaching the ultimate strength of the material. Strain aging prior to joining may be used to further enhance connection strength to a point which requires exceeding the ultimate strength of the parent material.

Abstract: A pipe joint is restrained against axial separation by the use of a bearing ring. Various embodiments of bearing rings having wedging surfaces cause an increase in the resistance to pipe separation as the joint separating thrust increases. That is, as the force tending to cause pipe separation increases, the wedging surface on the bearing ring cooperates with a corresponding wedging surface on a spigot ring to increase the resistance of the pipe joint to separation. The spigot rings are connected to the spigots by welding, set screws, heat-shrinking, etc.A specially shaped snap ring or bearing ring and associated method of making the bearing ring is used to avoid possible problems resulting from manufacturing tolerances. Specifically, the bearing ring is constructed with a major diameter greater than diameters at other locations on the ring.

Abstract: A threadless nonrotating steel coupling system that is quickly connected and disconnected in an axial manner by simple hand tools, is sealed by a compressible gasket, and is locked together by a pin system to prevent rotation of the male half-coupling relative to the female half-coupling. The coupling is held together by means of matching circular saw-toothed ridges and grooves at right angles to the axis of the coupling, which substitute for the pitched threads used in standard threaded coupling systems. The steel male half-coupling is rigid whereas the steel female half-coupling, which contains a series of spring-loaded and parallel longitudinal fingers, is flexible, since each steel finger is free to move in a radial direction with respect to the axis of the coupling system.

Abstract: A sleeve connector for connecting the ends of two tubes together, in particular socket tubes, comprises a socket formed with or connected to one of the tubes. The socket has an inner annular recess which is bounded by a conical surface which tapers radially inwardly toward an end of the socket. A retaining collar is secured around the spigot end of another tube to be connected to the first mentioned tube. At least one locking member is disposed around the spigot and is positioned in the annular recess so that it can bear against the conical surface. The locking member has an inner cylindrical contact surface which engages on the spigot and an outer contact surface which has a sectional toroidal shape wherein all normals to the toroidal shape pass through the cylindrical contact surface.

Abstract: This invention relates to a lug for anchoring the end of a tie rod at a bell flange and spigot pipe joint and for sealing more effectively the bell flange and spigot joint. One portion of the lug is positioned on a bolt which connects the bell flange and a gland and is inserted between said bell flange and said gland. The other end of the lug is formed to hold securely the end of a tie rod. The tie lug is designed in such a manner that when the tie rod is tightly anchored to the lug, pressure is thereby exerted on the gasket between the bell flange and the gland with the result that a more effective seal is achieved.

Abstract: A push one fitting for pipe joints and comprising a bell having a central bore adapted to receive one end of the pipe joint therein, a sealing member interposed between the outer periphery of the pipe joint and the inner periphery of the bell, and clamping apparatus cooperating directly with the bell for securing the bell in position on the pipe joint, the clamping apparatus being in the form of set screws extending through the sidewall of the bell for engagement with the pipe, or a split ring having a hook-shaped flange for engagement with a complementary groove on the outer periphery of the bell.

Abstract: A vertical spigot joint for sealing the space between the socket and the end of a pipe inserted in the socket has an aluminium cord sealing the space and a filler mixture. The filler mixture comprises aluminium cement, vermiculite grains and a plastics material which retains its plastic properties in use. A sleeve of a glass fibre cloth coated with protective layers covers the joint and is secured to the pipe end and socket by silicone putty and by clamping strips. A thermally insulating refractory ceramic felt is provided between the pipe end and the filler material. The use of this filler mixture, together with the provision of the sleeve enables a joint to be produced which is gas-tight and absorbs relative movement of the pipe end and socket due to the media in the pipe or due to thermal expansion and contraction.

Abstract: A boltless restrained pipe joint having means for accommodating axial misalignment of a spigot in a bell mouth and having snap ring means disposed in a restraining assembly for holding the spigot and bell mouth against axial separation.

Abstract: A ductile iron molded pipe joint gland used to create an effective and lasting seal between interfitting pipe sections allows considerable deflection of the joint in any direction from the axis of the pipeline without loss of seal integrity. The interfitting pipe sections are mechanically joined securely by the gland and compressible seal in a follower gland embodiment and also by angled set screws in a retainer gland embodiment. The pipe joint gland utilizes a minimum of material for reduced weight and savings of energy in its manufacture and transportation without sacrifice of strength. The construction and shallow angle of the sealing gasket engaging face of the gland prevents gasket creep under high pressure.

Abstract: A bell and plain end pipe joint are provided wherein the plain end has a raised portion on its outside diameter. A series of locking segments fit into a circumferential groove in the bell of one pipe and engage both the raised portion on the plain pipe and a portion of the bell. Upon an increase in fluid pressure in the pipes, the pipes tend to separate axially and the locking segments also contact and bear against a different portion of the bell. The joint provides a novel means of distributing the axial thrust tending to separate the pipe being joined.

Abstract: A fluid conduit system is disclosed which comprises a rigid duct pipe having a cylindrical outer surface, a flexible metal hose telescoped onto the pipe, a clamp assembly securing the hose to the pipe and a seal between the hose throat and the pipe. The flexible metal hose is constructed from interlocking helical convolutions defining a helicoidal interior throat formed in part by a helical recess, has an end region contacting the duct pipe surface and a plurality of generally axially extending slots formed in the hose end region. The clamp assembly is disposed about the hose end region for urging the hose into engagement with the pipe. The seal is disposed in the throat recess for blocking passage of fluid between the hose and the pipe through the recess.

Abstract: A restrained mechanical pipe joint including a spigot end of one pipe seated in a socket end of a second end or a fitting. The joint includes a single tightening means and a restraining ring formed to permit limited misalignment of the longitudinal axes of the spigot and socket pipe ends.

Abstract: A thrust rod anchor for utilization in conjunction with a tied form of pipe joint restrainer system. The anchor utilizes spacers which are supported by flanges at their outer extremities and are bolted together over a pipe. A pipe engaging support is provided in conjunction with the outwardly disposed portions of the spacers in a manner wherein a rigid structural support is located adjacent to the surface of the pipe which serves to support and carry symmetrically disposed pipe engaging set screws. Thrust rods are connected to the assembly intermediate outwardly disposed connecting bolts and the set screws. The anchor assemblies of the invention have been shown to provide substantially enhanced anchoring resistance to thrust forces.

Abstract: A connector for joining pipe ends is provided having two memory metal lock rings which are heat-shrinkable about a pipe end and a memory metal rod/wedge ring, heat-shrinkable at a higher temperature or in a delayed mode, to secure the lock rings.

Abstract: A swivel spout construction for a faucet in which there is provided a composite spout defined by an elongated generally U-shaped shell and an elongated plate both molded from plastic material. The shell and plate define sealing flanges which are secured together by means of hot plate welding. The shell and plate together define end walls, sidewalls and an upper and bottom wall which form a waterway. A hollow, cylindrical spud extends from the bottom of the plate at the spout inlet and is retained in a cylindrical bore of the faucet underbody by means of a retaining ring and a hold down nut. The construction provides for a swivel spout which is suitable for kitchen use under relatively high hydrostatic pressures and with a capability to withstand water hammer and shock pressures generated by the opening and closing of a dishwasher inlet valve. The composite spout provides for a low cost esthetically pleasing design that has relative ease of manufacture as compared to other designs.