Abstract: A molded plastic tubular coupling including a plastic sleeve having an integral head at one end. The sleeve provides a cylindrical outer surface to engage in a corresponding bore of another component. The cylindrical outer surface has an encircling annular recess and an integral radially extending flexible annular diaphragm formed in the recess. The diaphragm has an outer periphery extending outwardly from the cylindrical surface to engage and grip the corresponding surface of another component.

Abstract: An adapter provides for mounting an object on plastic. The adapter comprises a body coupled with at least two feet. The feet are weldable to the surface of the plastic while the plastic is in a molten state. The adapter also includes a coupling mechanism coupled with the body. The coupling mechanism is operable to couple the object with the adapter.

Abstract: The present invention discloses multiple sealing systems for composite risers and methods of preventing interior fluid leakage to the outside of composite risers. Single or multiple elastomeric seals are formed between an elastomer applied in single or multiple grooves provided circumferentially along the outer surface of a metal to composite interface (MCI) of a liner assembly of the composite riser and an elastomeric shear ply provided on the outside of the liner assembly. The elastomeric seals and a seal between the MCI and the liner of the liner assembly provide a multiple sealing system for the composite riser to prevent leakage of interior fluids. In the event that the integrity of the seal between the MCI and liner fails or the integrity of the liner is compromised, the elastomeric seals would prevent leakage of the fluid to the outside of the composite riser.

Abstract: A tubing/fitting connection provides secure sealing attachment of a tubing to a fitting. In a described embodiment, a flexible tubing is connected to a non-rigid fitting using a retainer which grips both the tubing and the fitting. The retainer also internally supports the tubing, and may sealingly engage both the tubing and the fitting.

Abstract: A pipe nipple has a bore configuration at one end thereof for receiving a tool therein to rotate the nipple about its longitudinal axis. The exterior of the nipple has surface formations as a stop against which a hose can be inserted over the nipple.

Abstract: An insulation piece for a pipeline conveys electrically conductive liquids from a point that is at a ground potential to a point connected to a high voltage. The liquid is conveyed discontinuously by portion-by-portion transport by the carriage flow of the liquid being interrupted. The insulation piece is periodically free of liquid, corresponding to the interruptions in the carriage flow. The insulation piece is a hollow body, and its unobstructed width is equal to or greater than that of the pipeline. Connecting pieces for connecting to the pipeline are provided on the end faces of the insulation piece, which are closed in places by terminating elements, and which connecting pieces are of the same diameter as the adjacent pipeline. The connecting pieces pass through the terminating elements, rest against them to form a seal, and each have a toroidal-form attachment on the outside at their inner end.

Abstract: A tubing/fitting connection provides secure sealing attachment of a tubing to a fitting. In a described embodiment, a flexible tubing is connected to a non-rigid fitting using a retainer which grips both the tubing and the fitting. The retainer also internally supports the tubing, and may sealingly engage both the tubing and the fitting.

Abstract: An end fitting connector having an axial bore through which a fluid is conveyed; comprises: a stem portion which includes a first tubular body having a first annular rim disposed at a distal end of the first tubular body, wherein the distal end is adapted to be inserted into an inner channel of a fluid transport tube. The stem portion includes at least one annular sealing member extending circumferentially outward from an outer surface of the first metal tubular body; and a connector portion opposite the distal end of the first tubular body. The connector portion includes a second tubular body having a second annular rim disposed at a distal end of the second tubular body, wherein the distal end of the second tubular body is adapted to be coupled with another fluid conveying structure.

Abstract: A pipe connection fitting having at one end a tapered edge (1) which communicates at its base with tightening nut (2) which communicates with male pipe threads (3) which communicates with extension member (4) having an angle cut (6) with a flow port (5) through the center of the fitting. Positive differential pressure is created by installing a differential pressure fitting facing into the fluid stream of a flow line. Negative differential pressure is created by installing a differential pressure fitting facing away from the fluid stream of a flow line. Tubing connects the fittings to a pressure tank containing the fluid to be injected in the flow line. Fluid flow past the fittings in the flow line motivates flow from the flow line to the pressure tank and from the pressure tank back to the flow line. The fitting being made of rigid plastic or metal.

Abstract: A pipe connection fitting having at one end a tapered edge (1) which communicates at its base with tightening nut (2) which communicates with male pipe threads (3) which communicates with extension member (4) having an angle cut (6) with a flow port (5) through the center of the fitting. Positive differential pressure is created by installing a differential pressure fitting facing into the fluid stream of a flow line. Negative differential pressure is created by installing a differential pressure fitting facing away from the fluid stream of a flow line. Tubing connects the fittings to a pressure tank containing the fluid to be injected in the flow line. Fluid flow past the fittings in the flow line motivates flow from the flow line to the pressure tank and from the pressure tank back to the flow line. The fitting being made of rigid plastic or metal.

Abstract: A suction hose assembly for an upright type vacuum cleaner including a flexible hose connected to an air inlet of a cleaner body with one end thereof, a suction pipe connected to the other end of the flexible hose with one end thereof and connected to an extension hose of the suction brush with the other end thereof, and a connection portion for movably connecting the suction pipe to the flexible hose so that the suction pipe can rotate relative to the flexible hose in a rotational direction.

Abstract: A coupling and methods for assembling and using the coupling for connecting a hose with a tube, pipe or other hose in an automotive refrigerant system. The coupling comprises a connector member connected to a tube, pipe or hose, the connector member having at least one circumferential groove into which at least one sealing member is disposed. A hose is fitted over the connector member and covers the sealing member. A collar is disposed over the hose and the at least one sealing member and is deformed such that the hose is brought into engagement with the at least one sealing member and the at least one sealing member and hose occupy substantially 100% of the volume of the at least one circumferential groove.

Abstract: A device for connecting a pipe socket, a tubular mounting part or a fitting (3) to a pipe (10), especially a water pipe. The inventive device comprises a connecting part (7). A first end (7a) of the connecting part is to be connected to a pipe (10) by a press connection, and a second end (7b) of the connecting part is to be connected to the pipe socket, mounting part or fitting (3). The second end (7b) of the connecting part (7) forms a plug-connection with a receiving part (4) of the pipe socket, the tubular mounting part or the fitting (3). After the press-connection is provided, the connecting part (7) is merely plugged in to connect a pipe (10), for example, to a mounting part.

Abstract: A connector insert for coupling a hose to a tube and an assembly using the connector insert is described wherein the connector insert has a first end, a second end and a uniformly tubular body member along a longitudinal axis. The tubular body member further includes a es a flared member extending radially outward and in the direction of the first end to form an annular ridge and the flared member further tapers radially inward toward said first end forming a first annular rim adjacent the first end. The annular rim has a smaller circumference than the circumference of the annular ridge. The tapered portion enhances the ability of the hose to form a bead and also to prevent pull-off.

Abstract: A hose connection for use in a vehicle is provided. The hose connection has a nozzle with at least one radial ring projecting from the surface of the nozzle. The hose connection also has a hose made of shrinkable material to provide a seal. The radial ring and hose act together to fix the hose to the nozzle. A related method of assembling the hose connection is also disclosed.

Abstract: Hose connector and method for sealingly connecting respective first and second drain sections of an appliance are provided. The hose connector includes a mating piece positioned at a proximate end of one of the first and second drain sections. The mating piece is configured to define a bore. An insertion piece is configured at the corresponding proximate end of the other of the first and second drain sections to be received through the bore in the mating piece. One of the pieces is substantially rigid and includes at least a first radially-extending rib. The other of the pieces is generally resilient relative to the rigid piece. The radially-extending rib has a diameter sufficiently large relative to the corresponding diameter of the resilient piece to provide a hermetic seal to fluid passing through the connector, by substantially and uniformly compressing any portion of the resilient piece in contact with the rib in the rigid piece.

Abstract: A socketless fitting for releasable connection of a pressurized line. The fitting has a housing body with a receiving opening to insert one end of the line, and an inner sleeve attached in the housing body in an arrangement that extends coaxially within the receiving opening for engagement into the inserted line end. The inner sleeve is fastened in the housing body media-tight around the periphery by a connector and preferably engages in the line media-tight around the periphery. A clamping element axially movable in the receiving opening cooperates with an inner surface of the housing body to secure the line end onto the inner sleeve. Media-tight outward sealing is accomplished by sealing engagement of the essentially rigidly secured inner sleeve in the line, because the inner sleeve itself is also tightly joined to the housing body.

Abstract: A garden hose fitting comprising an axially elongated cylindrical body having a first axial end, a second axial end, one of (1) an externally threaded male hose connector, and (2) an internally threaded female hose connector adjacent the first axial end, and interior annular hose-grip ridges adjacent the second end, an annular shoulder projecting radially inwardly of the body intermediate its ends, and an axially elongated support sleeve having an annular collar tightly fitted onto said annular shoulder, extending axially toward the second body end, and spaced radially inwardly of the body to form a cylindrical, hose-receiving and retaining cavity between the ridges and the sleeve.

Abstract: The invention proposes a connection between tubing and a hose which can be easily and inexpensively produced, requires little installation space and results in favorable hydraulic properties. The connection is realized by means of a connecting piece that is integrally formed onto the tubing.

Abstract: Provided is a highly reliable leak-proof pipe joint which is superior in workability, inexpensive and Light, superior in resistance against chlorine and oxygen contained in hot water or vapor, resistive against hydrolysis in hot water, superior in mechanical strength and impact resistance, and thereby capable of withstanding deformation due to water pressure or water hammer phenomenon. This pipe, joint has a main body and a connector or connecting the main body to a pipe, wherein at least either the main body or connector is formed from one type selected from a group consisting or resin in which thermoplastic elastomer is added to polyphenylene sulfide, polysulfone, polyphenyl sulfane, polyphthalimide and polyetherimide, and the main body and connector are formed integrally.

Abstract: An improved fitting having an improved flexible tubing tip to connect to flexible tubing, e.g., FUNNY PIPE brand polyethylene pipe, used for sprinkling systems and other fluid delivery systems. According to one aspect of the present invention, one or more annular barbs are positioned at or toward the back of the portion of the fitting inserted into the flexible tubing, with a threaded or spiral or helix portion being positioned at the front of the portion of the fitting inserted into the flexible tubing. According to another aspect of the present invention, the threaded or spiral or helix portion of the fitting is slightly tapered to facilitate insertion into the flexible tubing. According to yet another aspect of the present invention, a double helix spiral thread is used.

Abstract: A pipe connection fitting having at one end a tapered edge (1) which communicates at its base with tightening nut (2) which communicates with male pipe threads (3) which communicates with extension member (4) having an angle cut (6) with a flow port (5) through the center of the fitting. Positive differential pressure is created by installing a differential pressure fitting facing into the fluid stream of a flow line. Negative differential pressure is created by installing a differential pressure fitting facing away from the fluid stream of a flow line. Tubing connects the fittings to a pressure tank containing the fluid to be injected in the flow line. Fluid flow past the fittings in the flow line motivates flow from the flow line to the pressure tank and from the pressure tank back to the flow line. The fitting being made of rigid plastic or metal.

Abstract: The pipe connection assembly includes a connector 10 that connects a pipe P as well as a bellows tube 30 that is pressure-fitted onto the connector 10. The bellows tube 30 includes a connecting straight tube 34 that is located at the connection end of the bellows portion 32 and is formed as a straight tube having a diameter nearly equal to the maximum outer diameter of the bellows portion 32. The connector 10 includes a connector main body 12 having a pipe insertion hole 16 for inserting a pipe P. A nipple 14 is formed around the outer circumference of the connector main body 12. The nipple 14 is located at a position at which it overlaps with the pipe P inserted in the pipe insertion hole 16. The pipe connection assembly has a construction that is advantageous in arranging and handling hoses in narrow spaces.

Abstract: A pipe element possessing a longitudinal axis (2) along which a rigid tubular part (3) and a flexible tubular part (4), together constituting a single piece, extend. The rigid part (3) has one end presenting a substantially radial connection surface (8) for connection to an end portion (11) of the flexible part (4), and an additional connection surface (10) on the radial connection surface (8) connecting to the end portion (11) of the flexible part (4), at least a part of the additional connection surface (10) extending substantially parallel to the longitudinal axis (2).

Abstract: A tube end support (10) for locating a tube end coupling comprises a sleeve (11) to be received in a tube having an encircling head (12) adjacent one end of the sleeve to limit entry of the sleeve into the tube. A gripper device (16) is disposed on the sleeve grips on the internal diameter of a tube to hold the tube on the sleeve. An annular seal (19) is supported in a groove (18) in the head (12) to seal with the internal diameter of a tube coupling in which the assembly of the end support and tube are located.

Abstract: A small-diameter resin tube connecting structure used as a small-diameter tube connector is provided. The connector comprises: a main body including therein a small-diameter chamber continuous with a communication hole defined by the connecting cylindrical wall at the top end of the main body and a large-diameter chamber formed behind the small-diameter chamber; and a socket having repulsive walls each in the form of a pawl wall and formed integral with, or separately from, the outer periphery of the connector main body whereby the repulsive walls of the socket are brought into engagement with an annular bulged wall of the target resin tube. Further, a thin-wall metallic tube having an annular bulged wall is inserted into at least the connecting end of the resin tube with the metallic tube serving as a reinforcing member for the resin tube. The resin tube may have the annular bulged wall together with the metallic tube by press-working the inserted metallic tube in the axial direction.

Abstract: A device for crimping or coupling end elements of a flexible pipe. The pipe includes a metal carcass of a helically wound wire wherein the winding provides gaps between adjacent windings. A sealing sheath outward of the carcass. The device comprises a cylindrically shaped tubular nipple that fits over the carcass with a tapered first conical leading end that is insertable between the sealing sheath and the carcass. The nipple has over a portion of its external surface grooves which substantially match in shape the squeezed out or crept parts of the sheath such that after the nipple has been installed at least part of the squeezed out crept parts of the sheath are almost completely housed in the grooves of the nipple.

Abstract: A vapor vent hose is adapted to be assembled to a nipple. The nipple has a first end, an outside diameter and a barb. The barb has a tapered first end adjacent the end of the nipple and a second end with a substantially radially extending face. The hose and nipple are provided in a fuel vapor system. The hose has a first end with an inside diameter fitting over the nipple. The first end has a cuff axially spaced from the end of the hose. The cuff is substantially undeformed radially after installation over the barb.

Abstract: A hose connecting assembly of the present invention ensures a tight seal even when a hose 30 is bent and laid out in a narrow space and repeatedly is subject to vibrations under a low-temperature condition. The hose connecting assembly includes a connection tube 10, which is pressed into the hose 30. The hose 30 is designed to have an inner diameter change rate Dc of no greater than 23% under application of an inner pressure of about 0.49 MPa. Ring-shaped projections 21, 22, and 23 are formed on the outer circumferential surface of the connection tube 10. The ring-shaped projections 21, 22, and 23 are designed to make a diameter expansion rate T, which is defined by an inner diameter d1 of the hose 30 and an outer diameter D2 of the ring-shaped projections 21, 22, and 23, at least 25%. A hollow cylindrical end 18 is further formed on an end portion of the connection tube 10. It is preferable that the hollow cylindrical end 18 has a length of at least about 3 mm.

Abstract: The invention relates to a connector which has an inner displacement member. The flow is stopped by the connector, i.e. the connector is impervious, in a first position. In a second position of the displacement member, with a stop defining the position, flow apertures are released which release the flow into the flow carrying line.

Abstract: A connector is provided for connecting a conductive resin tube to a metal pipe. The connector includes a front end for insertion into the conductive resin tube and a rear end defining a chamber for accommodating an end of the metal pipe. A support member is disposed in the connector for supporting the front end of the resin connector. The support member has a front end that engages the inner surface of conductive resin tube and a rear end that engages the metal pipe.

Abstract: An end connector for fuse with composite coiled tubing for use in downhole wellbore operations is disclosed. The connector comprises intermediate portions of first and second end portions connected thereto. The first end portion has threads defined thereon to mate with threads defined on the inner surface of the composite coiled tubing. The outer surface of the end connector is flush with the outer surface of a composite coiled tubing when connected thereto. The connector has a means for providing a seal between the end connector and the composite coiled tubing and is adapted to be connected to apparatus, tools and equipment used in downhole wellbore operations in which coiled tubing is utilized.

Abstract: A hose female fitting comprising a female hose connector, an elongated swivel nipple interfitted with the female hose connector, the female hose connector having a washer-support shoulder, inner threads for attachment to a male connector, a seal-receiving annular groove and a flange-receiving annular groove in an inner peripheral wall, the nipple having hose-engageable protrusion, a first annular flange extending into the flange-receiving groove of the female hose connector, and a second annular flange abutting the axial outer end of the female hose connector second portion, and an annular seal in the seal-receiving annular groove.

Abstract: A connector element is provided for tubing or hoses of elastically expandable material with a tubular part of inelastic material that can be inserted tightly sealed into a tubing or hose end and that features a so-called pine-cone or thorn profile. In order to simplify the handling and to improve the sealing effect, this connector element has an axially extending cylindrical area with an outer diameter matched to the inner diameter of the tubing or hose end at the front end of the tubular part. A circumferential groove, rectangular in cross section, into which an annular seal of noncircular cross section is arranged is formed in the cylindrical area.

Abstract: A connector for joining together lengths of plastic tubing has a plurality of external annular barbs and an insertion end portion having spaced apart first and second end edges with tapered edges extending therefrom to a cylindrical portion from which the annular barbs extend.

Abstract: A hose coupling for connecting two hoses (3, 4) has two hose fittings (1, 2), which each have a coupling part (5, 6). One coupling part (5) has a radially encircling guide collar (7), which engages in a groove (9) made in a sleeve (8) of the other coupling part (6). The sleeve (8) is of elastic material in order to fit the coupling parts (5, 6) one inside the other in a simple manner.

Abstract: A molded nipple connection system for permanently molding a metal nipple within a plastic container that is not susceptible to expansion/contraction forces incurred by the plastic container. The inventive device includes a metal nipple having a threaded end or a cincture surrounded end, a lumen, an immersion end positioned within the plastic during molding, and a plurality of openings adjacent the immersion end. The plurality of openings allow the liquefied plastic during molding to project through the exterior surface of the metal nipple into the lumen of the metal nipple where it is joined with liquefied plastic within the lumen of the metal nipple. After hardening of the plastic, the mold is removed and the metal nipple is captured within the plastic container because of the plastic-securing loop created through the plurality of openings. The plurality of openings are preferably slots, however they may comprise various other well-known shapes.

Abstract: An interface system between an end of a filament composite tube and a rigid interior end fitting. The system includes a plurality of traplocks having varying wall thicknesses at the bases thereof. The traplocks also have varying angles of the bearing faces thereof. A Y-shaped seal is disposed between an inboard end of the fitting and the inside of the composite tube.

Abstract: A tubular portion 1 of a bell mouth has on its outer peripheral surface one or a plurality of first projections 21 projecting radially and one or a plurality of second projections 22 projecting at a position phased differently from the first projection 21 in an axial direction and in a circumferential direction, each of the projections 21 and 22 being formed such that its surface on a bell-shaped opening portion 3 side is formed as a sharply angled surface 2a, while its surface on a tubular opening portion 4 side is formed as a gently inclined surface 2b, an axial phase interval w between the first projection 21 and the second projection 22 is set to satisfy the relationship: w.ltoreq.W with respect to an axial width W of an inner surface portion of a small-diameter portion 32 in the annularly corrugated pipe P, a circumferential phase angle r being substantially equal to a value calculated by dividing a half angle of circumference (180 degrees) by the first projections 21.

Abstract: A duct joiner for connecting an air duct to another duct or other part of an air conditioning system has a tubular neck portion, a retaining clip and a sealing ring both mounted on the neck portion. The retaining clip has a ring portion received in a groove in the outer surface of the neck portion and a series of resilient teeth extending outwardly from the ring portion. The teeth are resiliently deformable to allow a hollow duct to be fitted over the neck portion and have either sharp edges or barbs thereon which dig into the internal surface of the duct to retain the duct on the neck portion of the joiner. The sealing ring has a ring section received in another groove in the outer surface of the neck portion and a resilient skirt which provides a seal between the neck portion of the joiner and the duct. The joiner may have one or more other neck portions with respective retaining clips and sealing rings for joining one duct to one or more other ducts.

Abstract: A quick-connect coupling for articulating hose lines includes a coupling body having a bore therein which receives a stem attached to a hose to be coupled to the body. A spline is positioned within the bore which receives a spline on the stem so that the stem does not rotate with respect to the bore and coupling body. A collet is provided which has inwardly and outwardly projecting detents that simultaneously engage both a shoulder within the bore and a groove in the stem to prevent axial movement of the stem with respect to the bore. While the stem is thus retained within the bore, an O-ring seals with the surface of the stem. In order to disconnect the stem from the bore, a collet is pressed inwardly to disengage the detents and then the stem is pulled axially away from the coupling member.

Abstract: The present connector for liquid-conducting, plug-type connections consists of a hose nipple (2) formed on the coupling (1) and pluggable into the connecting end of a flexible plastic hose (3). The nipple has at its free end a conically widening, beveled plug edge (4) and an adjoining cylindrical shaft portion (5) with several truncated expansions (6) and (7), as well as an annular contact flange (8) at the end of the plug-in area (E) portion. The back side of the first truncated expansion portion (6) has a conical taper portion (9). Between the expansion portion (6) and the taper portion (9) an encircling groove (10) is provided, in which is embedded a gasket ring (11) circular in cross section. In order that the end of the hose or tube can be easily slipped over the nipple and the gasket ring, the surface (M1) of the first truncated expansion portion (6) outwardly at an angle .alpha. of about 45.degree.

Abstract: A unitarily formed, one-piece connector includes an inner, open ended tubular insert portion, one end of which has a plurality of radially outwardly directed annular barbs on an exterior surface thereof. The one end is further provided with a radially outer sleeve, the sleeve having at least one continuous, radially inwardly directed annular barb formed on an interior surface thereof. The one end is adapted to receive one end of a length of flexible tubing between the sleeve and the tubular insert portion. A coupling assembly for supporting a sprinkler and for connecting the sprinkler to a supply conduit includes a coupling body having an axial through-bore, one end of the coupling body having a flexible tubing connector portion, and the other end of the coupling body having a screw thread formed thereon, adapted for connection to the sprinkler body.

Abstract: A connector for connecting a pair of hoses including a unitary body having a substantially cylindrical main section having a hollow interior, a projection extending outward from the main section and connectable to a first hose, a first edge portion extending outward from the main section, a second edge portion extending outward from the main section at a distance from the first edge portion to define a space therebetween, and a rim defining an aperture through which a second hose is insertable into the interior of the main section. The projection has a hollow interior in flow communication with the interior of the main section. The connector also includes a locking device arranged in the space between the first and second edge portions for locking the second hose in connection with the main section.

Abstract: A tubing end-piece interconnects a free end of a piece of tubing and a tubing connector or fitting so that a fluid can flow between the tubing and the fitting or connector. The tubing end-piece includes a body member extending along a longitudinal axis with a bore extending longitudinally therethrough. The body member has an elongated body portion, a doughnut-shaped head portion and a frustoconically-shaped tail portion. The body portion has an outer body surface configured in a shape of a frustum that tapers from a first end and towards a second end. The doughnut-shaped head portion is connected to the first end of said body portion and extends radially outwardly relative to the longitudinal axis to form in cross-section an outer curved surface commencing from the first end and terminating in an outer peripheral edge which defines a first opening into the bore.

Abstract: A connection, preferably for use in a medical environment, for joining a rigid circular port from a medical machine to an elastomeric hose cuff having a medical hose extending therefrom. The rigid cuff has an external annular bead formed at its outward end while the elastomeric hose cuff has an internal annular bead formed at its distal end. When the components are coupled together by sliding the hose cuff over the rigid port, a double seal is formed between the various annular beads and the surfaces of the component to provide a substantially leakproof seal between the elastomeric hose cuff and the rigid port to prevent gasses from escaping to the surrounding environment.

Abstract: In a connector for a hardshell venous reservoir, improved positioning and better line holding ability is provided by forming a line-retaining barb on only the upper half of the connector. A dual-size or combo connector using this principle is also disclosed.

Abstract: A tube conduit connection and method of producing the same, whereby an end of a pipe made of polyolefin is cold-deformed, i.e. at the ambient temperature, by means of a spreading mandrel. After the spreading mandrel is removed, the enlarged pipe end and a desired connecting piece or the end of another pipe are plugged onto each other. The polyolefin pipe end is then deformed back to the original shape and forms by self-redeformation a solid and gas-tight connection with the connecting piece or the end of the other pipe.

Abstract: A coupling device especially adapted for the joining of polyethylene underground irrigation hoses, having a female portion, a male portion and a lock cap, the female portion having a threaded nipple for insertion into a hose end, the male portion likewise having a threaded nipple for insertion into a second hose end and several lugs that fit into grooves in the lock cap, enabling the male portion to be pulled out of the assembly for a limited distance, for ease of fitting into difficult hose coupling situations. The presence of the lugs prevents rotation of the male portion with respect to the cap until the male portion is pulled out of the assembly far enough that the lugs are pulled past the end of the locking cap.

Abstract: A tubing end-piece interconnects a free end of a piece of tubing and a tubing connector or fitting so that a fluid can flow between the tubing and the fitting or connector. The tubing end-piece includes a body member extending along a longitudinal axis with a bore extending longitudinally therethrough. The body member has an elongated body portion, a doughnut-shaped head portion and a frustoconically-shaped tail portion. The body portion has an outer body surface configured in a shape of a frustum that tapers from a first end and towards a second end. The doughnut-shaped head portion is connected to the first end of said body portion and extends radially outwardly relative to the longitudinal axis to form in cross-section an outer curved surface commencing from the first end and terminating in an outer peripheral edge which defines a first opening into the bore.