Abstract: A coupling has first and second segments attached to one another end to end surrounding a central space for receiving pipe elements. A spring assembly attaches the segments at one end and an adjustable attachment assembly attaches the segments at the opposite end. The spring assembly biases the segments away from one another sufficient to permit insertion of the pipe elements into the central space while the segments are attached to one another. The coupling may include a split ring toothed retainer for coupling plain end pipe elements, or it may have arcuate keys which engage grooved or shouldered pipe elements.

Abstract: A connection socket for a tubular connection includes a socket cup having a metal alloy composition and a sealing portion. A primary seal is positioned within the sealing portion. The primary seal includes an elastomeric material having a service temperature. One or more spacer rings are positioned within the sealing portion. A secondary seal is positioned within the sealing portion. The secondary seal includes a metal composition, wherein the secondary seal has a melting temperature at or above the service temperature of the primary seal. One or more locking rings are positioned within the sealing portion, wherein each of the one or more locking rings comprises a biting feature defined along an internal circumference of the locking ring.

Abstract: A press fitting for an electrical conduit includes a fitting body and a press connector in a press-connection section of the fitting body to allow press-fit connection to a conduit. A conduit retainer in a conduit retainer section of the fitting body releasably grips and removably retains the electrical conduit in the fitting body before the press-connection section is deformed radially inward during the press connection process.

Abstract: A power converter (100) includes a power converter circuit (1), a cooler (2), and a cover member (3). The power converter circuit is configured to convert input electric power into DC power or AC power. The power converter circuit is placed on the cooler. The cooler is configured to cool the power converter. The power converter circuit is housed between the cooler and the cover member. The cooler (2) includes a main body (20), a coolant flow passage (21), and a coolant input/output portion (22). The coolant flow passage is formed inside the main body. A coolant is circulatable through the coolant flow passage. The coolant input/output portion is coupled to the coolant flow passage. The coolant input/output portion includes a coolant introduction pipe (22a) and a coolant discharge pipe (22b). The coolant introduction pipe introduces the coolant from outside the cooler. The coolant discharge pipe discharges the coolant to outside the cooler. The coolant input/output portion (22) is joined to the main body.

Abstract: A tube connector has a main body, a restricting element, and a sealing ring. The main body has a mounting segment extending outwardly and transversely to form an inner annular space to accommodate the restricting element and the sealing ring. When the tube body is inserted, the tube body will be engaged and positioned by teeth of the restricting element. The sealing ring and the restricting element abut each other to maintain the sealing from the sealing ring. The changes of the pressure from the fluid transporting in the tube body will move the tube body and the main body relatively to and fro, and thus the abutting force against the sealing ring will increase or decrease accordingly, which maintains the elasticity of the sealing ring to maintain the sealing after a long time of use, thereby avoiding elastic fatigue and prolonging the lifespan.

Abstract: A connector assembly includes a first connector, a compression member, a retainer, and a second connector. The first connector includes a first coupling portion, a proximal opening, and an annular inner surface extending from the proximal opening. The compression member includes an inner surface and an outer surface. The outer surface is configured to sealingly engage the annular inner surface of the first connector. The retainer includes a ring portion and a plurality of teeth. The ring portion includes a proximal end and a distal end. Each of the plurality of teeth extends from the distal end and is configured to engage the compression member. The second connector includes a second coupling portion and an engagement surface. The second coupling portion is configured to engage the first coupling portion. The engagement surface is configured to engage the proximal end of the retainer.

Abstract: A metal, electrically conductive tube, and electrical lines positioned in the tube for electrically powering a building, is provided. The tube includes tube sections connected by a tubular metal and electrically conductive connection part. The tube sections have end sections facing one another. The connection part extends with its inner surface facing outer surfaces of overlapping sections of the tube sections. The connection of the tube sections is achieved by plastic deformation of the connection part in the overlapping sections. A respective contact is provided between the inner surface and the outer surfaces and ensures the electrically conductive connection between the first end section, the connection part and the second end section via an indentation in the inner surface or the outer surfaces, or via fluidic contact between the outer surfaces and the inner surface.

Abstract: An anti-dropping steel ring used in a press-fitting type pipe fitting includes an anti-dropping steel ring, wherein the anti-dropping steel ring is provided with first snapping parts and second snapping parts distributed in a circumferential direction, the first snapping part is configured to extend from an inner circumferential wall of the anti-dropping steel ring in a radial direction, and the second snapping part is configured to extend from a circumferential edge of the anti-dropping steel ring in an axial direction and lean inwards.

Abstract: A grip lock connector member which connects a supply pipe from a source of water to a fire sprinkler through an interior grip lock connector. The grip lock connector includes a multiplicity of gripper teeth which form a tight grip connection to the supply pipe. The supply pipe is retained within an interior chamber and grasped and retained by the multiplicity of gripper teeth at the interior end of the interior chamber. A gasket or O-ring directly behind the gripper teeth facilitates a leakproof connection. At its opposite end, the grip lock connector includes female mating threads which receive male threads at a top location of a fire sprinkler.

Abstract: A duct manifold including a first duct, a second duct, and a coupling. The first duct includes a first duct body, a duct extension, and a first duct flange. The duct extension extends from the first duct body. The first duct flange is coupled to the duct extension, and the duct extension extends beyond the first duct flange such that a flange support is defined on an end of the duct extension. The second duct including a second duct body and a second duct flange coupled to the second duct body. The coupling is configured to couple the first duct to the second duct, wherein the second duct flange rests on the flange support when the coupling couples the first duct to the second duct.

Abstract: A press fitting for an electrical conduit includes a fitting body and a press connector in a press-connection section of the fitting body to allow press-fit connection to a conduit. A conduit retainer in the press fitting releasably grips and removably retains the electrical conduit in the fitting body before the press-connection section is deformed radially inward during the press connection process. A socket in the press fitting has a cross-sectional diameter that tapers in a direction away from the press-connection section.

Abstract: An anti-rotational push to connect fitting includes a housing defining an internal cavity, the internal cavity having, at least in part, a non-circular shape. The housing has a conduit receiving region having an inwardly oriented wall. A seal is positioned in the housing adjacent to the conduit receiving region. A grip ring support is positioned in the housing adjacent to the seal. The grip ring support has a transverse flange having an inner peripheral edge and an outer peripheral edge and a longitudinal wall extending from the flange spaced from the inner and outer peripheral edges to define gaps between the longitudinal wall and a wall of the housing and inwardly of the longitudinal wall. A grip ring is positioned adjacent to the grip ring support and is seated on an end of the wall. The grip ring has a non-circular shape configured to cooperate with the housing internal cavity and the grip ring support.

Abstract: A push-to-connect electrical conduit fitting and assembly facilitates the connection of multiple types of metallic conduit. In various embodiments, an axially internal portion of the fitting has an interior surface that tapers from a narrower radius to a wider radius as it extends axially outwardly from a tube stop element. A packing arrangement including a fastening ring and release pusher are maintained within axially intermediate and/or outer portions of the fitting to facilitate retention of inserted conduits.

Abstract: A fitting element is configured for coupling tubing to a fluidic device having a receiving cavity configured for receiving the fitting element, where the tubing has an inner contact surface of a biocompatible material, the inner contact surface being configured to contact a fluid to be conducted by the tubing, and the receiving cavity having a receiving contact surface of a bio-compatible material. The fitting element includes a first sealing element of a bio-compatible material configured for sealing to the bio-compatible material of the inner contact surface of the tubing, and a second sealing element configured for sealing against a pressure ambient to a pressure of the fluid in the tubing. Upon coupling of the tubing to the fluidic device, at least a portion of the receiving contact surface, the first sealing element, and the second sealing element enclose an interspace, each surface of the interspace being a bio-compatible material.

Abstract: A push-to-connect electrical conduit fitting and assembly facilitates the connection of multiple types of metallic conduit regardless of connection type and finish. In various embodiments, an axially internal portion of the fitting has an interior surface that tapers from a narrower radius to a wider radius as it extends axially outwardly from a tube stop element. A packing arrangement including a sealing member, fastening ring and release pusher are maintained within axially intermediate and/or outer portions of the fitting to facilitate retention of inserted conduits.

Abstract: A coupling element of a plug connection for tubing includes a retaining screw with an inner passage opening. The inner passage has a bearing shoulder on which a retaining element is arranged and behind which a sealing element is mounted. A sleeve-shaped spacing element is arranged between the retaining element and the sealing element, and the retaining element is axially held between the spacing element and a bearing shoulder of the inner passage opening. The sleeve-shaped spacing element has an axial length such that a restriction in the diameter of the wall of the inserted tube, produced when the retaining element is under load, is bridged by the spacing element such that the annular sealing element abuts against an undeformed area of the tube wall.

Abstract: A press fitting includes a socket defining at one end an opening for insertion of an end of a tube, a sealing ring within the socket, and a gripping ring within the socket, arranged in front of the sealing ring in the direction of insertion of the tube, wherein the gripping ring is provided with at least one weakening feature, in particular in the form of notches, being reducible in size by deforming the gripping ring when applying a pressing action on the socket such that an inner diameter D2 of the gripping ring is reduced. A joint assembly may comprise such a press fitting having a tube inserted therein.

Abstract: There is provided a breech lock coupling for coupling riser sections together. The breech lock coupling may be used non-pre-loaded or pre-loaded according to the user's preferences. In addition, the breech lock coupling may be disassembled for inspection and maintenance and reassembled. A locking ring secures two coupling components together. The coupling components may be attached to opposite ends of the riser sections, such as via welding. The locking ring may be pre-attached to the first coupling component for easy storage and fast assembly. Assembly of the riser may be accomplished by inserting the second coupling component into the locking ring and the first coupling component, then rotating the locking ring with respect to the second component. Furthermore, the coupling may be pre-loaded by tightening fasteners on the locking ring to provide a more stable coupling. Unlike with traditional riser couplings, the pre-load fasteners may be tightened via hand-held tools.

Abstract: This invention discloses an air pipe joint for inspecting a substrate, including a hollow pipe body and a light source. The pipe body comprises a first pipe body and a second pipe body which are bent to and communicated with each other. Free ends of the first pipe body and the second pipe body are respectively an air inlet end for connecting an air intake pipe and an air outlet end for discharging air. The light source is fixed inside the pipe body. The light emitted by the light source is emitted from the air outlet end. This invention further discloses a measurement system for substrate inspection. The air pipe joint can emit light from the air outlet end thereof, reduce a blind spot on the transparent stage and influence on measurement accuracy due to a blocking of the air pipe joint itself against the light source.

Abstract: A tube coupling (10) which includes a tubular, electrically conductive housing (11), a seal (12) for sealing against the outside of a tube, a substantially annular and electrically conductive grab ring (13) for gripping the outside of a tube and an annular cartridge ring (15) between an inner surface of the housing (11) and the grab ring (13). The cartridge ring (15) includes a projection (30) that projects radially inwardly and is positioned so that upon insertion of a tube into the tube coupling (10), an edge of the grab ring (13) bears against the projection (30) and the cartridge (15) bears against a facing surface of the housing (11) to provide electrically continuity between the grab ring (13) and the housing (11).

Abstract: A vehicle forced-induction device includes a first exhaust turbine type forced-induction unit and a second exhaust turbine type forced-induction unit. The first forced-induction unit includes an outlet pipe. The outlet pipe includes a first tubular portion and an annular first flange. The second forced-induction unit includes an inlet pipe. The inlet pipe includes a second tubular portion and an annular second flange. The forced-induction device includes a fastener that includes an annular groove. The annular groove has a shape in which a width of the annular groove decreases toward a groove bottom. The fastener is wound around the first and second flanges along a circumference of the first and the second flanges, thereby housing the first and second flanges in the annular groove. The fastener fastens the first and second flanges to urge the first and second flanges toward each other.

Abstract: A second part extending around a first part in a plugged-together state. The second part has snap-in element with an inwardly protruding projection for meshing with a complementary recess on an outer surface of the first part to hold the second part fixed in the axial direction on the first part. Both parts have a central passage opening. One part has an end area expanding towards the outlet opening in a connection area, and the other part is connected to an elastic section, arranged in its interior. The front end of the elastic section is pressed into contact with the expanded end area of the opposite part. The projection of the snap-in element maintains the first and second parts meshed together, so that the elastic section exerts a sealing function due to the pressure on the expanding end area.

Abstract: A quick-connector connecting a first pipe and a second pipe. The quick-connector includes a housing that extends about a first axis and defines a bore that extends axially therethrough. A grab ring is disposed in the bore of the housing and includes a body that extends about and along the first axis between a first end and a second end and defines a passage that extends between the first and second ends for receiving one of the first or second pipes. A plurality of protrusions extend from the body in the passage for clamping against the received pipe to prevent the received pipe from being axially removed from the passage. A plurality of hinges are spaced from one another about the body for allowing the body to uniformly and circumferentially flex about the hinges relative to the first axis when the first or second pipe is received in the passage.

Abstract: A push-to-connect modular cartridge for a plumbing fitting includes a cylindrical cup having an annular surface at one end and a cylindrical shoulder at an opposite end. A circular seal is positioned against the annular surface, and a circular backing ring is positioned against the seal on a side opposite the annular surface. A grab ring including inwardly projecting tines is seated against the backing ring on a side opposite the seal, and a containment ring contacts the grab ring on a side opposite the backing ring. The containment ring is engaged by the shoulder of the cup to hold the containment ring, grab ring, backing ring, and seal together. This modular push-to-connect cartridge can be welded to a plumbing fitting which uses significantly less material, thereby greatly reducing the cost to manufacture.

Abstract: A fitting for a pipe is disclosed. It includes a main body for internally accommodating the pipe, fastening means able to be tightened to the main body, a deformable annular sealing gasket and a blocking ring nut which can be positioned within the fitting between the main body and the fastening means, respectively, to ensure the sealing of, and block in firm position, the pipe, at least when the fastening means are tightened to the main body, the blocking ring nut being elastically deformable in radial direction. The fitting also has means for retaining in a widened position at least the mouth section of the annular sealing gasket, with an inner diameter greater than the outer diameter of the pipe.

Abstract: A cordset assembly that may have an electrical device and at least one cord. A clamp may be disposed on the cord and may be received in a cord hole that may be at least partially defined by a mounting boss. A seal assembly may be disposed in the cord hole between the clamp and a cap. The cap, seal assembly, and clamp may cooperate to secure the cord.

Abstract: Embodiments of a push fitting joint packaging arrangement include a sealing member, a fastening ring, a retaining ring member and a shield member. In various embodiments, the shield member has a substantially cylindrical interior surface, and a non-cylindrical exterior surface.

Abstract: A construction system for a connection arrangement for media lines, wherein the connection arrangement has a connection body with a receiving opening for a media line and with internal parts for interacting with the media line and providing axial guidance, mechanical locking to prevent detachment, peripheral sealing and, where applicable, internal radial support. Various internal parts can optionally be inserted into the connection body, which is designed to be identical in respect of the internal contour of the receiving opening, and for a particular maximum external line diameter, in order to adapt to at least two dissimilar media lines having different cross-sectional dimensions. The internal parts are adapted, on the one hand, to the permanently identical internal contour of a receiving opening of the connection body and, on the other hand, to the cross-sectional dimension of one of the dissimilar media lines.

Abstract: A fitting includes: a first member; a second member coupled by screw coupling with the first member; and a ferrule placed in an accommodation space between the first member, the second member, and a pipe. The ferrule has a rising portion including a first end portion, a pressed portion located closer to a second end portion than the rising portion, and an intermediate portion including a portion where an inner diameter is greater than the first end portion and the second end portion, the intermediate portion connecting together the rising portion and the pressed portion. The first member has a first tapered inner circumferential surface, which is an inner circumferential surface having a tapered shape, to be in contact with the first end portion of the ferrule. The second member has a pressing portion for pressing at least a portion of the pressed portion of the ferrule.

Abstract: Provided are connector assemblies for connecting pipes. For example, a connector assembly can include a connector formed with a hollow into which a pipe is inserted. A large diameter portion on at least one side of both end portions of the hollow where the large diameter portion is formed has a relatively large inner diameter and a housing space inside. The connector assembly also includes a ring-shaped sealing member provided in the hosing space and a grip member provided adjacent to the sealing member in the housing space. Further, the grip member has a body portion formed to contact an inner circumferential surface of the large diameter portion and a pair of sharp portions formed to be bent from both sides of the body portion and to partially bite into the outer circumferential surface of the pipe by crimping the outer circumferential surface of the large diameter portion.

Abstract: Connection assembly includes two pipe end sections arranged to face each other, a profiled clamp including a clamping band with a base and two tilted side walls with ends, and at least one perimeter pleat projecting outwards on each of the pipe end sections. The side walls are engagable with the pleats on sides of the pleats facing away from one another.

Abstract: A pipe coupling system includes first and second polymeric, thermoplastic pipes secured to each other by a pipe coupling. The pipe coupling includes a mechanical sealing surface adapted to receive a mechanical seal, a fusion seal, or both. The pipe coupling includes a pipe coupling body with an outer surface and a first end and an oppositely positioned second end. First and second respective threads are respectively defined about the first and second ends. A nut is used in the pipe coupling system when the mechanical seal is used to join the pipe first ends to seal against the coupling inner surface. A mechanical capture ring is also included, which defines a central aperture having inwardly angled engagement prongs that are sized to capture the respective first ends of the pipe. The engagement prongs are configured to each include a sloping face.

Abstract: A housing for receiving a fluid conduit has an internal annular shoulder. A cylindrical first cartridge is positioned in the housing and has an internal annular groove and an outer annular groove. An O-ring in the internal annular groove provides a seal with a fluid conduit. A second O-ring is positioned within the outer annular groove to provide a seal between the first cartridge and the housing. A gripping ring is positioned adjacent and in contact with the first cartridge and has inwardly projecting annularly spaced tines for gripping and holding a fluid conduit inserted into the housing. A second cylindrical cartridge is positioned adjacent the gripping ring on a side opposite the first cartridge. The housing includes a lip at one end to engage the second cartridge for holding the first and second cartridges and the gripping ring against the annular shoulder in the housing.

Abstract: An apparatus for connecting a conduit has a body attaching to the conduit, a seal having a shape extending around and minimizing leakage from the conduit, and a activator for enabling the seal so that the seal minimizes leakage from the conduit if the conduit is properly inserted in the body.

Abstract: A universal self-locking push-to-connect plumbing insert assembly provides flexibility to an installer to use the assembly in the field with a variety of different plumbing fittings for coupling conduits to such fittings. The assembly comprises first and second interlocking cartridges holding a dual function gripping ring. The gripping ring has inwardly projecting tines for gripping and holding a fluid conduit and outwardly projecting tines for holding the assembly within a plumbing fitting. A sealing ring is captively held by the first cartridge and is positioned to seal the insert assembly to a plumbing fitting when inserted therein and also seal a conduit extended into the assembly. In one embodiment, the assembly further includes a release ring held within the second cartridge for selectively engaging the inwardly projecting tines of the gripping ring to allow a fluid conduit to be removed from the insert assembly.

Abstract: A push fitting joint packaging arrangement allows the re-use and repair of push-to-connect fittings and valves without damage to the fitting or valve elements or the pipe, and without coining, gluing or threaded engagement of parts. In one embodiment of the present invention, the arrangement comprises a split fastening ring and a split O-ring support member.

Abstract: An oil feeding device includes a tube body formed of metal and having a tube connecting part, and a connection pipe formed of resin and having a pipe connecting end. A press-fitting member and a seal member are clamped between the tube connecting part and the pipe connecting end. The press-fitting member includes a press-fitting body having a cylindrical outer peripheral face, which is fitted to an outer periphery of the tube connecting part, and claws which are formed at one end of the press-fitting body. The pipe connecting end is provided with a reduced diameter part which is formed by annularly reducing a diameter of a part of the pipe connecting end. The reduced diameter part retains the pipe connecting end, in engagement with the claws, by being formed by plastic deformation before or after the pipe connecting end is connected to the tube connecting part.

Abstract: Providing a fluid coupling, in which a coupling member is readily retained by a retainer and the retainer can be readily attached to or detached from the coupling member, and a retainer for such a fluid coupling. A retainer includes an annular gasket retaining portion for retaining a gasket therein and an annular coupling member retaining portion which has an inner diameter greater than that of the gasket retaining portion and retains one coupling member. At an inner circumference of the gasket retaining portion and an inner circumference of the coupling member retaining portion are formed annular grooves respectively, for holding therein elastic rings respectively.

Abstract: A pipe joint has a tube for fluid detachably fitted thereto, and is connected to a hydraulic device such as a cylinder. The pipe joint is provided with a body into which the tube for fluid is inserted, and an attachment/detachment mechanism which is provided inside the body and which can attach/detach the tube for fluid. An inner sleeve for connecting the tube for fluid and the hydraulic device is provided in the body, the inner sleeve being interchangeable with orifices having different opening diameters.

Abstract: A connection device for pipe lines includes a connection element that has a receiving opening for a pipe line and a retainer element that stops the pipe line from being pulled out. The retainer element is designed as a spring-elastic toothed ring that has teeth distributed across a circumference and which extend radially inward at an incline and act against the pipe line. The toothed ring is mounted to have limited axial play. At the transition region between an outer circumferential region and the retainer teeth, the toothed ring interacts with a circumferential tilt edge such that the toothed ring can pivot about the tilt edge out of a position in which its outer circumferential region is pressed against a first, lower contact section and a second, upper contact section. The retainer teeth being able to be elastically deformed by bending.

Abstract: The invention relates to a plug-in coupling for a pipe (3), especially for water conduits, comprising a coupling sleeve (1) receiving the pipe end (2), a sealing ring (4) which is inserted into the coupling sleeve (1), a locking ring (6) which is mounted upstream of the sealing ring (4) in the plug-in direction of the pipe end (2) and forms retaining claws (7) which protrude with respect to the pipe end (2) and are inclined in the plug-in direction, and an annular body which is similarly mounted upstream of the sealing ring (4) and is supported axially in the plug-in direction in relation to the coupling sleeve (1). In order to provide advantageous constructional conditions it is proposed that the annular body comprises a protective ring (12) for surrounding the face end of the pipe end (2) from the outside, which protective ring is connected via a predetermined breaking connection (13).

Abstract: A fluid coupling having an outer housing with an internal bore, an O-ring fitted within the bore, a spacer bushing fitted against the O-ring, a gripper ring fitted against the axially outer side of the spacer ring, the gripper ring having axially and radially inwardly protruding circumferentially spaced gripping teeth, and an end bushing holding the gripper ring, spacer bushing, and O-ring within the outer housing. A second gripper ring and a second spacer ring are used in some embodiments.

Abstract: Fittings, including elbow fittings and Tee fittings have bodies that surround a central space and define openings to receive pipe elements. Ribs surround the openings, and gaps are positioned between the ribs to permit deformation of the body when ends of the body in facing relation are brought together. The body may be formed of two housings or unitary in construction. The ribs may be grooved to accommodate toothed retainer rings providing mechanical engagement with pipe elements. The ribs have surfaces with radii of curvature that, when the ribs are undeformed, are substantially equal to the radii of curvature of the pipe elements they engage.

Abstract: A mechanical coupling between a straight pipe end and a socket fitting comprises a seal ring and a locking ring disposed within the interior of the socket. The locking ring has a generally frustoconical shape with a plurality of corrugations extending circumferentially thereabout, the corrugations presenting inner edge portions engaging the outer annular surface of the pipe end and outer edge portions engaging the interior annular surface of the socket for opposing withdrawal of the pipe end axially outwardly from the socket. In an advantageous embodiment, the locking ring is assembled with a support disk to optimally orient the locking ring with respect to the fitting and the pipe end.

Abstract: A push fitting joint packaging arrangement allows the re-use and repair of push-to-connect fittings and valves without damage to the fitting or valve elements or the pipe, and without coining, gluing or threaded engagement of parts, while also requiring less force to connect and disconnect tubing elements. In one embodiment of the present invention, the arrangement comprises a sealing member, a fastening ring, a tube support member and a push release member.

Abstract: Device for connecting a tube to a circuit element, including a cartridge type tubular body provided externally with a washer for anchoring the body in a well of the circuit element and provided internally with a retainer for the tube, characterized in that the anchor washer is mounted on an end portion of the tubular body designed to lie at the level of the opening of the well when the connecting device is in use, the end portion being elastically deformable between a deformed state enabling the washer to be placed on the body and a rest state for retaining the washer on the body.

Abstract: A valve assembly having a valve body; at least one port to receive tubing; and a collar group to secure the tubing to the port, wherein the collar group is selected from a first collar group configured to secure the tubing by a flattening a washer, thereby driving teeth of the washer into the tubing, and a second collar group having a smooth interior surface to which the tubing is bonded, wherein either the first or the second collar groups may be interchangeably threaded onto the port.

Abstract: A coupling having a housing with an internal bore sized to receive a tube therein, a spacer bushing non-movably retained against axial movement within the bore, and first and second gripper rings each having a peripheral portion non-movably retained against axial movement within the bore prior to and during operation of the coupling with the tube therein with teeth protruding inwardly into the bore sufficient to engage the tube. The gripper teeth being non-retractable, and the gripper rings and spacer bushing being held tightly together within the housing. The coupling may include a seal for application of pressurized fluid to the tube.

Abstract: A mechanical coupling between a straight pipe end and a socket fitting comprises a seal ring and a locking ring disposed within the interior of the socket. The locking ring has a generally frusto-conical shape with a plurality of corrugations extending circumferentially thereabout, the corrugations presenting inner edge portions engaging the outer annular surface of the pipe end and outer edge portions engaging the interior annular surface of the socket for opposing withdrawal of the pipe end axially outwardly from the socket. In an advantageous embodiment, the locking ring is assembled with a support disk to optimally orient the locking ring with respect to the fitting and the pipe end.

Abstract: A flange assembly for a watertight coupling of smooth surface pipe includes a triple metal ring provided for anchoring and retention and having three unitary rings which are identical and form substantially an entirety of a circumference and a sheet on which the unitary rings are solidly joined and which constitutes a base of the triple ring. Each of the unitary rings is provided throughout an entirety of its inner edge with folds forming in their outer most part a succession of vertices. The unitary rings are configured to rest on a smooth outer surface of pipes and the vertices are driven into the smooth outer surface to prevent an axial displacement allowing an application of the triple ring, and to distribute a penetrating action so as to decrease a possibility of tearing and damage of the smooth outer surface of the pipes.