Abstract: A locking insert 4 for joining the male and female ends of spheroidal-graphite cast-iron pipes conveying fluids under pressure has a generally planar shape, and includes at least two metal parts 4A, 4B fixed to each other by an electrically insulating junction layer 4C.

Abstract: The disclosure relates to a grab ring comprising an annular element having one set of teeth projecting outwardly at an inclined angle to the annular element to one side thereof and a second set of teeth projecting inwardly at an inclined angle to the annular element to the other side thereof to engage between a pair of inner and outer concentric cylindrical surfaces to permit relative movement between the surfaces in one direction whilst preventing relative movement in the opposite direction.

Abstract: A restraining element for preventing separation of telescoped pipes comprising a compressible body of elastomeric material, the compressible body having metal segments spaced equidistantly around an exposed face of the body, each of the metal segments having a first exposed face with a row of teeth, at least four teeth of the row of teeth lying in an arc, and at least some of the metal segments having a single tooth extending radially outwardly beyond the face of the metal segment opposite the first exposed face.

Abstract: A socket joint for pressurized fluid carrying pipes incorporates a radially-compressed gasket 4 locked in position by toothed inserts 12 each having an inclined face 27 which slides on and bears against a similarly inclined face 26 of a support insert 11 embedded in the anchoring heel 14 of the gasket which is seated in the anchoring throat 7 of the socket.

Abstract: A pipe coupling for connecting together two plain-ended pipes in a fluid-tight manner comprises an outer tubular casing, an inner tubular casing and a tubular sealing sleeve. The sealing sleeve has two sets of inwardly projecting ribs which, in use, are pressed into sealing engagement with the respective ends of the pipes. The inner and outer casings are longitudinally split and tensioning screws on the outer casing can be tightened to tighten the outer casing around the inner casing and the sealing sleeve. Frustoconical slots in the outer surfaces of the sealing sleeves receive frustoconical gripping rings which have gripping teeth on the inner sides which bite into the pipe surfaces to secure the pipes against axial displacement.

Abstract: A coupling assembly for use in connecting one end of a first tubular member to a component of a piping system includes a receiving tubular member defining an opening adapted to receive the first tubular member, the receiving tubular member having an inner portion defining an inner bore dimensioned to receive the one end and an outer portion defining an internal annular cavity intersecting the inner bore and projecting radially outwardly therefrom, the annular cavity comprising an annular wall portion tapered radially inwardly and projecting longitudinally toward the opening. Also included in the assembly is an annular seal member and a lock ring both disposed in the annular cavity between the first tubular member and the receiving tubular member, the lock ring having an outer circumferential surface portion adapted to engage said tapered wall portion and an inner circumferential surface portion adapted to engage an external wall portion of the first tubular member.

Abstract: A restraining element for preventing separation of telescoped pipes comprising a compressible body of elastomeric material, the compressible body having metal segments spaced equidistantly around an exposed face of the body, each of the metal segments having a first exposed face with a row of teeth extending radially inwardly and a single acutely pointed tooth extending radially outwardly beyond the face of metal segment opposite said first exposed face.

Abstract: The present invention relates to a quick pipe coupling comprising a tight binding assembly set installed inside of the coupling and an anti-reverse pushing assembly set installed at the opening of the coupling for an easy, fast and convenient operation for connection which is further characterized by the distinctive reversibility of the connected pipes.

Abstract: A pipe coupling having an elastomer sealing sleeve which is approximately C-shaped in cross-section has a cylindrical housing which is split in the longitudinal direction, and which defines inwardly bent end walls and can be constricted like a pipe clip by means of a closure having tensioning screws, in which arrangement the sleeve, which is enclosed at the end faces and at the circumference by the housing and by a metal insert sheet bridging the housing gap and is approximately C-shaped in cross-section, is compressed in the circumferential direction and is brought to bear against the pipes to be coupled. Sliding rings, which are compressible in the circumferential direction, are located between the end faces of the sleeve and the end walls of the housing. Upon assembly of the coupling, these sliding rings are brought to bear against the outer walls of the pipes and form a sliding seat with the latter.

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 fitting is formed with an outwardly open generally cylindrical bore centered on an axis and having an inner surface of a predetermined inner diameter. A tube end fits axially into the bore and is formed with a radially outwardly open groove, and a partial stiff sleeve of elastically deformable and strong material is engaged in the groove and has a frustoconically outwardly flared sharp outer edge of a predetermined outer diameter. Interengaging formations on the sleeve and on the tube end spread the sleeve and force the edge to bite into the inner surface of the bore on axial outward displacement of the sleeve and tube end. An elastomeric seal ring on the tube end offset from the groove radially outwardly engages the bore.

Abstract: A fiber optic groundwire or static cable for use between spaced-apart support towers of an electric power transmission network, for ground fault protection from lightning strikes and other electrical faults, with an integral fiber optic telecommunications bundle. A bundle of optical fibers tightly enclosed by a pliable thermally insulating strain jacket is firmly affixed into a helically-wound channel within an electrically conductive core. At least one layer of stranded electrical conductors serving as strength members completely surrounds the core. The tight jacketing of the optical fibers by a pliable strain jacket, combined with the firm mounting of the strain jacket within the helical channel of the core, reduces the axial tensional forces on the optical fibers that occur during and after installation of the cable.

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: A quick pipe coupling a circular receiving chamber adjacent to the orifice thereof for holding a movable taper ring and an inflatable tube, an U-shaped lock pin releasably inserted therein to retain the taper ring in place, a toothed lock ring fastened in the orifice, wherein the movable taper ring is squeezed by said inflatable tube against the teeth on the toothed lock ring when the U-shaped lock pin is removed from the pipe coupling, causing the teeth on the toothed lock ring to respectively engage into the outer surface of the pipe inserted through the lock ring, the movable taper ring and the inflatable tube into the pipe coupling so that the pipe inserted therein is firmly retained in place.

Abstract: A combination baggage tag and claim ticket is disclosed formed as a strip of flexible material having two tongues for encircling the handle of a piece of baggage and a detachable ticket disposed between the tongues. The back surface of the strip is pattern coated with adhesive such that two adhesive-free zones are left on the tongues with adhesive coated bands at the free ends of the tongues.

Abstract: A couponing system by which a consumer selects one of two coupons, hidden from the consumer, by pulling one of two, non-intersection zipper pulls which shears, destroys and renders invalid the non-selected coupon, while keeping intact the selected coupon.

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: 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 pressure balanced coupling device for quick connection and disconnection with at least one mechanism. The device operates to maintain a sealed flow-through connection between two devices which may also contain a pressurized medium such as refrigerants. The preferred device permits non-destructive gripping of tubing while affording readily selectable means for safely releasing pressure from within the device prior to releasing the gripping connection provided by this coupling device.

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: An improved stab-type coupling of the type used for connecting an end portion of a smooth wall non-metallic pipe or tube to fittings or other pipes or tubes wherein the coupling body has a first end area including an internal recess adapted to receive the end portion of a smooth walled non-metallic pipe. An elongated hollow insert is disposed within the recess for receiving the pipe end portion axially thereover. At least a pipe gripping member is disposed within the recess in a radially spaced surrounding relationship with a portion of the insert to retainingly engage the pipe end portion as it is inserted axially therepast. The improvement comprises a closing structure associated with the body first end area for closing the recess and thereby protect the coupling interior. The closing structure accommodates selective removal of a portion thereof from the body to expose the recess prior to receipt of a pipe end portion thereinto.

Abstract: A tubing joint comprises a grip-ring whose grip-nails bite the outer wall of a tubing inserted into the joint proper to prevent the inserted tubing from moving in the tubing-detaching direction, and a release-ring which releases the bite of the grip-nails on the outer wall of the inserted tubing. The grip-ring is formed in a zigzag ring having a number of notches cut radially and alternately from the inner and outer circumferences of the ring. The outer extremity side of the grip-ring is bent by a constant width in the tubing-admitting direction and the bent ends, i.e., outer extremities, are inserted into a catching section to hold the grip-ring within the joint proper. The inner extremities of the grip-ring formed by the notches serve as grip-nails.

Abstract: An improved releasable coupling device for a tube of the type which includes a fitting having a bore communicable with a source of fluid and an opening into the bore through which the tube is to be inserted, a retaining ring in the opening having a plurality of axially extending inwardly biased fingers adapted to engage the tube when the tube is inserted into the fitting towards the bore, and an unlocking collar for forcing the plurality of fingers radially outward to cause disengagement of the fingers from the tube. An annular sealing member is positioned in the opening axially between the fingers and the end of the opening adjacent the bore for engaging the tube and the wall of the opening to seal the tube in the fitting when the tube is inserted therethrough, and which is in engagement with the fingers. The annular sealing member is adapted to exert an axially directed force towards the fingers when subjected to the pressure of the fluid communicating with the bore.

Abstract: The gas riser connects underground natural gas service lines, particularly plastic service lines, with above ground meters and the like. The riser includes a conduit or plastic tube which has first and second ends. An annular collar is swaged onto the exterior of the conduit adjacent its first end. An annular resilient seal frictionally engages the exterior of the conduit abutting the annular collar. A retaining ring is slidably disposed on the exterior of the conduit abutting the resilient seal. A connector is integrally affixed to the second end of the conduit for connecting it to a service line. A tubular element or iron pipe has an internal bore, an annular projection into the internal bore, a tapered portion adjacent the projection, and threads at one end for connecting it with the meter.

Abstract: A stab-type coupling and method for connecting an end portion of a smooth wall non-metallic pipe or tube to fittings or other pipes or tubes. The coupling is defined by a non-metallic coupling body, a generally elongated hollow insert, an annular retaining spacer ring, seal rings, a collet back-up ring, and a retaining collet all disposed within the recess of the coupling body. The retaining collet is provided with a tapered external surface complementary to an internal frusto-conical surface defined by the back-up ring which in the preferred embodiment is molded within the coupling body. A separate non-metallic chamfer ring which is closely slidably receivable on the hollow insert is also provided. The coupling is made up as by inserting the chamfer ring onto the hollow insert to a position spaced inwardly from the insert outer end and outwardly adjacent to the coupling body.

Abstract: A stab-type coupling and method for connecting an end portion of a smooth wall non-metallic pipe to fittings or other pipes. The coupling is defined by a non-metallic coupling body, a generally elongated hollow insert, annular spacer rings, seal rings, a collet ring, and a retaining collet all disposed within the recess of the coupling body. The retaining collet is provided with a tapered external surface which is complementary to an internal frusto-conical surface defined by a back-up ring molded within the coupling body. The coupling is made up as by inserting the end of a smooth wall non-metallic pipe into the coupling body such that the pipe is received about the generally elongated hollow insert and within the retaining collet. The toothed internal surface of the retaining collet is adapted to engage the non-metallic pipe.

Abstract: The invention relates to a connector for joining pipes, particularly of metal, which comprises a socket and a pipe having a smooth end for insertion into the socket. A seal and friction ring inside the socket seals the pipe into the socket and prevents accidental withdrawal. In the present invention retaining elements are embedded in the elastomeric sealing material of which the ring is composed and are axially slidably guided as well as being freely tiltable about an annular bead on the socket.

Abstract: A stab-type coupling and method for connecting an end portion of a smooth wall non-metallic pipe to fittings or other pipes. The coupling is defined by a non-metallic coupling body, a generally elongated hollow insert, annular spacer rings, seal rings, a collet ring, and a retaining collet all disposed within the recess of the coupling body. The retaining collet is provided with a tapered external surface which is complementary to an internal frusto-conical surface defined by a back-up ring molded within the coupling body. The coupling is made up as by inserting the end of a smooth wall non-metallic pipe into the coupling body such that the pipe is received about the generally elongated hollow insert and within the retaining collet. The toothed internal surface of the retaining collet is adapted to engage the non-metallic pipe.

Abstract: A preassembled tube coupling into which a tube may be inserted and which automatically grips the tube to prevent withdrawal of the tube. The coupling includes a packing ring for sealing the tube, a sleeve with spring fingers to lightly grip the tube upon insertion of the latter, and a nut with a cam surface to contract the fingers into tight gripping engagement with the tube upon slight withdrawal motion of the tube.

Abstract: A tube coupling, of the kind having a collet in a bore in a body member, the collet arms having cam surfaces co-operating with an internal surface on the bore so that the collet arms are forced radially inwardly to grip a tube in the collet if the latter is pulled in a direction outwardly of the bore, has the collet moulded of plastics material. Projections intermediate the ends of each collet arm are provided to grip the tube and the arms are shaped so that their portions inwardly of the bore beyond the projections also bear against the tube, thereby spreading the gripping force along part of the length of the tube and so preventing the tube from deforming and pulling out even if the tube is of resilient material.

Abstract: A coupler which is for tubing and which has a tube receiving bore therein. A sealing ring, spacer ring and lock ring are coaxially located within the coupler bore. When a tube is inserted into the coupler bore, the sealing ring makes contact between the coupler and tube with the spacer and locking ring cooperating to cause the locking ring when the tube is pressurized to firmly engage the tube, thus preventing the tube from being withdrawn from the coupler.

Abstract: A pipe coupling comprising a housing which can be clamped about the pipe ends which are to be interconnected, there being enclosed within such housing an inwardly open gasket of substantially C-shaped cross-section having confronting legs constructed as sealing lips and the web of which bears against the inner surface or inside of the housing. The web is supported upon the sealing lips by a respective spiral or helical spring ring.

Abstract: A pipe coupling for releasably securing pipes in end to end relation uses ntrolled wedging action of contractile rings positioned between the coupling and the ends of the pipes. The pipes are disengagable from the coupling through the use of a tool inserted between the pipe and the coupling and simultaneously moving the pipe inwardly of the coupling so as to reposition the contractile rings.

Abstract: A coupling for connecting a supply conduit to a rigid or flexible extension tube, designed to carry a fluid under pressure, comprises a cylindrical housing having one end wall fastened to the conduit and another end wall formed with an opening for the insertion of an extremity of the tube. The inserted tube extremity is closely surrounded, within the housing, by one or more dished springs which can be deformed under axial pressure from an adjoining annular thrust member when the tube is filled with fluid; the pressure of the fluid may act upon the thrust member through an elastic ring, embracing the tube extremity which shifts relatively to the housing under such pressure, or directly through a gap behind that member which then operates as a piston forming a socket for the tube.

Abstract: A releasable tube coupling wherein the tube is retained in a coupling body by means of a resilient tube clamping sleeve which encircles the tube and has radially outwardly projecting detents thereon engaging radially outwardly extending apertures or recesses in the bore of the coupling body. The sleeve is circumferentially contractible to enable its insertion into the coupling body and for tightly clamping the tube. The sleeve is dimensioned to frictionally engage the outer surface of the tube and, when an axially outward force is applied to the tube, the detents are cammed inwardly to cause the sleeve to contract and tightly grip the tube.

Abstract: A joint for connecting a smooth wall pipe to fittings or other pipes, the joint including a hollow body member having a passageway therethrough, a split gripper ring positioned and movable axially within the passageway, an elastomeric sealing ring also positioned and movable axially within the passageway and means for axially urging the gripper ring and the sealing ring apart whereby the gripper ring has improved initial grip on the pipe upon insertion of the same and the sealing ring has improved sealing characteristics over a range of positive and negative pressures and over a hot and cold temperature range. The external configuration of the split gripper ring cooperates with the internal configuration of the passageway so that the pipe can be installed axially into the body member but when pulled outwardly of the body member the gripper ring is further actuated from its initial gripping action to prevent removal of the pipe.

Abstract: A releasable tube coupling wherein the tube is releasably retained in the coupling body by means of a sleeve in said body surrounding said tube and held in clamping engagement therewith by means of a U-shaped clip. The clip extends transversely through the body and engages a pair of cams or ramps on the sleeve which retain the sleeve and are effective to more firmly clamp the tube when a force is exerted on the tube in the direction outwardly from the fitting.

Abstract: A pipe coupling suitable in particular for coupling a pipe of plastic material to a fitting or coupling together a pair of such pipes. The pipe coupling comprises an externally threaded sleeve member formed with one or more inwardly directed protrusions and adapted to receive a pipe to be coupled, an internally threaded collar member into which said sleeve is screwable, at least one of said members being formed or provided with constraining means whereby, with said pipe received within said sleeve the axial movement of said sleeve into said collar results in the protrusions biting into the pipe.