Abstract: The invention relates to a plug-in coupling for fluidic systems, in particular for CO2— and fuel-conducting systems, comprising a housing (1) and a plug (2) which can be inserted into the housing (1), it being possible for the plug (2) to be inserted by means of a plug stem (3) into a receiving opening (4) of the housing (1) in a manner sealed by at least one circumferential seal (5, 5a, 5b) and, when inserted, for it to be locked therein against release by means of a locking device comprising at least one latching element (7) arranged on the plug (2) and a latching shoulder (8) interacting with the latching element (7), and the housing (1) being of two-part design by comprising an inner housing part (1a) and an outer housing part (1b), which can be connected releasably to the inner housing part (1a) and essentially surrounds the inner housing part (1a).

Abstract: A fluid quick connector sealingly latches first and second components, one of which has a through bore and the other has a raised bead spaced from a tip end. A retainer is mountable through a transverse bore in one end of the first component and latched to the first component by projections carried on a pair of legs. A flange on the retainer is positioned to engage a surface of the first component to position the retainer on the first component. Inner disposed arms on the retainer engage a constant diameter portion of the second component and resist movement of the raised bead into or out of the bore in the housing when the retainer is in a fully latched position. The flange on the retainer is spaced from the legs of the retainer to enable the legs to be of minimal thickness for a reduced axial length for the retainer.

Abstract: The invention relates to a connector (3) for connecting a flow pipe leading to an internal combustion engine of a motor vehicle to a feed pump. Said connector comprises an elbowed connecting sleeve (7) which can be rotationally fixed in various angular positions in a receiver (6). Said connecting sleeve (7) is positively fixed in the receiver (6) by a catch means (9). In this way, the forces acting on the flow pipe are kept at a distance from a seal pertaining to the connecting sleeve (7).

Abstract: A pipe connector having excellent pressure tightness and including a female connector (52), a male connector (54) and a retainer (56) is constructed so that the incomplete connection of the female connector (52) and the male connector (54) can be clearly perceived when the retainer is falsely locked.

Abstract: A detachable hose coupling includes an improved female coupler piece. The female piece is generally cylindrical female sleeve piece having a pair of coaxially aligned bored open surfaces which are in opposing generally equidistant positions and displaced from a vertical plane passing through a central longitudinal axis of the female sleeve piece. A grooved surface extends partially into an outer surface of the female sleeve and extends between the bored open surfaces. A male piece is provided and a staple is provided for use in connecting the male piece to the female piece, wherein the staple fits through the bored open surfaces and seats in the grooved surface.

Abstract: A quick-connect coupling for hoses or pipes with a coupling housing contains a connection piece and a housing part as well as a plug-type fitting wherein the housing part and the connection piece are realized in the form of two parts.

Abstract: The invention proposes a feed pipe coupling for a pressurised fluid system, characterised in that the branch of the spring clip which includes the locking portion is configured generally as a hairpin having a radially internal, locking, first branch portion of which the locking portion is a part, together with a radially external, connecting, second branch portion which is connected at each of its ends, firstly to the operational locking branch portion through a bent connecting portion, and, secondly to the central connecting branch of the spring clip, in such a way as to give the locking branch a capacity for elastic deformation in the general transverse plane of the spring clip.

Abstract: A joint device in a pipeline includes a connecting body, a joining screw nut, a connecting joint and two fixing coils. The connecting body has a connecting pipe with an end thereof being a connector and another end thereof being another connector. The first connector is provided with an annular recess and the second connector has at least two annular recesses. The joining screw nut at an end thereof is provided with internal threads and at another end thereof has a radial hole and is used for engaging with the first connector. The connecting joint at an end thereof has a radial hole corresponding to one of the annular recess on the second connector and extends outward a screw rod portion with a conical end. One of fixing coils is inserted into the annular recess on the first connector via the radial hole of the joining screw nut and the other fixing coil is inserted into one of the annular recesses on the second connector via the radial hole of the connecting joint.

Abstract: A coupling device has a coupling receptacle and a matching coupling insert received in the coupling receptacle for connecting two components conveying a fluid. The coupling receptacle has two lateral, diametrically opposed slots and a U-shaped, elastic securing bracket seated on the coupling receptacle with two legs projecting into the lateral slots. The coupling insert has an outer peripheral securing rib and the legs of the securing bracket snap into place behind the securing ring in the coupling position of the coupling device. A securing bushing is arranged inside the coupling receptacle and faces a sealing ring with one end while the other end rests radially outwardly on the securing rib and projects past the lateral slots. The securing bushing has two transverse slots aligned with the two lateral slots, and the two legs of the securing bracket engage the two transverse slots of the securing bushing.

Abstract: A quick connector for establishing a connection between a flexible tube and an interior chamber of a vessel. The vessel has a wall structure through which a mounting bore extends. A canister assembly associated with the quick connector includes a housing is adapted for installation in the mounting bore, a retainer coupled to the housing that adapted to accept and retain a port connector of the hose therein, and a spring clip for coupling the housing to the wall structure. Flanged ends of the spring clip are retained in, and project outwardly from, corresponding apertures formed through a leading end of the housing. Upon installation of the housing into the mounting bore, the end flanges are deflected inwardly until the leading end of the housing extends beyond the mounting bore. Then the flanged ends return to their expanded condition, thereby coupling the canister assembly to the vessel.

Abstract: A tube end having an outwardly projecting ridge is secured in a fitting having a body formed with a seat centered on an axis and open axially rearwardly. The tube end is coaxially engageable in the seat, and a retaining clip on the body extends secantally across the seat and can move between an outer spread position engaging a respective inner surface of the seat and an inner retaining position spaced radially inward from the respective inner surface. The tube end when fully axially inserted in the seat is engaged axially outward of the ridge by the clip. A latch element can move between an outer freeing position generally clear of the clip and an inner locking position engaged outward of the clip between same and the respective inner surface and preventing the clip from moving from the inner retaining position to the outer spread position.

Abstract: An approximately cylindrical housing is coupled to one pipe, and the other pipe having an annular protruding portion on an outer periphery at an end portion is inserted into the housing to be coupled. Inside the housing, are installed a stopper that is held at an initial position in close proximity to an opening portion of the housing and moves to a push-in position away from the opening portion of the housing when the other pipe is fully introduced inside, and a retainer having a locking piece that is inserted through an opening portion, formed in a top wall of the housing, in a direction perpendicular to the axial direction of the housing and engages with the annular protruding portion of the other pipe while the end portion of the other pipe is fully inserted. The retainer cannot be inserted unless the stopper moves to the push-in position.

Abstract: A spring clip for retaining an electrical connector in coupled engagement with a fuel injector includes a unitary spring clip component having a retainer assembly, a lever assembly operably coupled to the retainer assembly, and a fulcrum assembly operably coupled to the lever assembly. A method of disengaging a spring clip from engagement with a fuel injector, the spring clip retaining an electrical connector in coupled engagement with the fuel injector is also included.

Abstract: A mounting device for mounting a tube to a refrigeration system component includes a connecting block and a clip, where the clip is inserted into a U-shaped recess in the block essentially perpendicular to the axis of the connecting block. The connecting block includes a body having end surfaces extending perpendicular to the axis of the body, and a U-shaped recess axially interconnecting the surfaces and opening outwardly from a side of the body for receipt of the tube. A U-shaped channel in the recess faces outwardly from the recess. The clip has a U-shaped body, and a pair of resilient tabs extend outwardly from the body in parallel relation to one another. The tabs of the clip are closely received in opposite sides of the U-shaped channel and the channel can be coined to retain the clip within the body. The tabs are bent inwardly toward one another by the curved inner end of the channel to facilitate retaining the clip within the channel.

Abstract: The device for quickly coupling a tube to an element comprises a tubular endpiece (1) subdivided along its axis (2) into a first portion (3) for connecting to the tube and a second portion (4) for coupling to the element (100), and fastening means (3.1, 15) for securing the tube to the endpiece and the endpiece to the element, the second portion (4) of the endpiece (1) possessing a groove (8) for receiving a sealing gasket (9). The endpiece (1) is fitted with a sleeve (10) for protecting the gasket (9), which sleeve is mounted to slide between a position in which it overlies the groove (8), thereby protecting the gasket (9), and a disengaged position which is offset relative to the groove (8).

Abstract: A separable rapid-action coupling serves for connecting fluid lines includes a tubular plug-in part with a circumferential holding rib, a coupling housing with a cylindrical receptacle cavity for the plug-in part and a separate holding element. The holding element has elastically expandable holding edges that are radially directed into the receptacle cavity. The holding edges engage behind the holding rib after insertion of the plug-in part. A safety clip with a second locking mechanism is situated in front of the plug-in opening of the housing in case the snap-in mechanism of the holding element fails. The safety clip includes a frame that fits on the end face of the coupling housing and two elastically expandable clips that engage corresponding projections on the coupling housing. The safety clip has snap-in fingers that can be inserted into the receptacle cavity.

Abstract: A connecting assembly for connecting to a fluid conduit in a fluid transfer system includes a ferrule-type connector having a first open end and a second open end. The first open end of the connector is operable to receive a fluid conduit therein. The second open end of the connector is operable to receive a washer and a flexible hose therein. The washer preferably has a concave cross-section and a central aperture receiving the fluid conduit to secure the connector to the fluid conduit when the washer is press-fit in the second open end of the connector and onto the fluid conduit.

Abstract: Aligned circumferential grooves between a bell and spigot form a passage for receiving a locking strap that is insertable into the passage through an entrance opening in the wall of the bell. The locking strap has at least one projection adjacent the tail end portion thereof for engaging a surface of the passage to resist withdrawal of the locking strap from the passage. The entrance opening and the tail end portion of the locking strap have cooperating abutment and shoulder surfaces to releasably lock the strap within the passage.

Abstract: A coupling member has an internally threaded end portion and an opposite socket end portion with a pair of axially-spaced internal circumferential grooves. The internally threaded end portion receives an externally threaded end portion on a pipe, while the opposite socket end portion receives an end portion of another pipe that has an external circumferential groove aligned with one of the pair of internal grooves. A spline is inserted into the aligned grooves through a transverse hole in the wall of the opposite end portion of the coupling member to hold the coupling member and the other pipe against relative axial movement. The spline is a wire rope to provide high shear strength.

Abstract: Disclosed is a connector of a fuel pipe for vehicle, which can be easily mounted on or separated from a connector housing by adjusting a latch. The latch includes guide members oppositely located at a prescribed interval, push members vertically located away from the opposite sides of the guide members, and two pair waved resilient members disposed on the upper and lower portions of the guide members. Each guide member has a curved inner surface, a slant surface on the front portion for guiding an insertion of the pipe, a fixed jaw on the rear portion for retaining a bead formed on the peripheral surface of the pipe, and a guide groove formed in the center portion thereof. The two pair waved resilient members elastically connect the push members and the guide members to provide a powerful elastic force to the two pair waved resilient members, so that the guide members are extended outward when the push members are pressed.

Abstract: A device for connecting a towed pipe to a towing apparatus, for example a percussion boring machine or a towing head, comprises an adapter sleeve adapted to the towing apparatus and a towed pipe of which the connecting end is, for example, provided with longitudinal slits and accordingly can be changed in diameter, and locking means by which the adapter sleeve and the towed pipe can be connected together in a sufficiently tension-resistant manner.

Abstract: In the flow path to atmosphere venting hot exhaust gases of a clothes dryer, a fluid-tight seal between a flow-diverting elbow telescoped about a clothes dryer exiting conduit consisting of a rubber sleeve in increasing thicknesses in width in the direction of flow effective in providing an establish sealing contact into the sleeve at a location of its thickness which obviates leakage of gas through the telescoping connection.

Abstract: A coupling assembly for coupling fluid components includes a female coupler having a receiver defined therein. A male coupler has an insert, the insert being receivable within the female coupler receiver in sealing engagement. And, a spacer is matable to both the female coupler and the male coupler when the female coupler and the male coupler are in sealing engagement, the spacer effecting positive engagement of the female and the male couplers. A method of coupling/uncoupling a coupling assembly is also included.

Abstract: A fluid quick connector includes a connector body which receives a retainer having a radially inward extending projection which is releasably engagable with an annular recess formed in an endform to releasably latch the endform in the connector body.

Abstract: A vapor vent valve has an annular locking ring received thereover, with surfaces thereon engaging the valve for limited axial movement therebetween and preventing relative rotation therebetween. A fuel tank has an access opening with a slit formed therein. The valve is inserted in the access opening and the end of the locking ring engaged in the slit, rotation of the valve causes the locking ring to feed completely through the slit to the interior of the tank and engages the inner surface thereof while continuing to engage the valve to retain and seal the valve in the access opening. The valve, locking ring and a seal ring may be pre-assembled to form a subassembly capable of being installed and locked on the fuel tank as a unit without the need for tools or fasteners.

Abstract: A conduit elbow assembly includes a hollow conduit piece having an end with an outer diameter, a body and a cap. The body has a first connective end with an end bore at the first connective end receiving the hollow conduit piece therein. A male fitting is located at the first connective end, the male fitting having an outer surface and an end which extends into the end bore. The outer surface of the male fitting has barbs which engage and retain the end of the hollow conduit piece thereon. The cap is attached ton the body and has a plurality of tapered projections, of which two are diametrically opposed to each other relative to the outer diameter of the hollow conduit piece. The two tapered projections form a wedge fit with the outer diameter of the hollow conduit piece.

Abstract: A quick-action connector assembly including a male member, a female member, a latching indicator member substantially fitted within the female member, a first engaging device for permitting engagement of the indicator member and the male member and a second engaging device for substantially inhibiting rotation of the indicator member relative to the female member, prior to insertion of the male member into the female member, and for disengaging the indicator member and the female member from each other, to permit the rotation of the indicator member relative to the female member, on the basis of the movement of the indicator member with the male member, after an annular protrusion formed on the male member has been latched in engagement with a letching projecting of at least one elastically deformable latching arm provided on the female member as a result of the insertion of the male member into the female member.

Abstract: A pipe joint assembly includes a cylindrical pipe and a pipe element having a generally cylindrical terminal portion for receiving the end of the pipe. The terminal portion is formed with a roughly straight open ended channel extending in a direction tangential to, but intersecting, the cylindrical pipe. A lock pin is insertable along the open ended channel so as to cause local inward deformation of the end, thereby locking the end and the pipe element together. The lock pin has a parallel-sided shaft portion of minimum transverse dimension d and a tapered portion of length l tapering to a point, where l is no less than twice d and is no greater than four times d. This geometry facilitates insertion of the lock pin through a combined linear and rotational displacement which is highly effective for ensuring effecting and reliable interconnection.

Abstract: A cartridge concentrically received within a bushing fixed to the end wall of an air reservoir tank. The bushing includes a retaining groove for receiving a snap ring engageable with a retaining surface on the cartridge, thereby securing the cartridge within the end wall of the tank. The cartridge includes a fluid passageway which may be provided with a plurality of components, including push-to-connect tube or hose fittings, inlet check valves, pressure relief valves, or the like, by which the cartridge provides for communication with the interior of the air reservoir tank.

Abstract: An apparatus and method to attach a sand tank discharge elbow to a valve in a sand classification tank using a removable spline and an optional hose clamp.

Abstract: A quick-release fitting assembly has a male fitting and a female fitting. The male and female fittings are secured together by a retaining ring that is at least partially received in aligned first and second retaining grooves that are provided in the male fitting and the throat of the female fitting respectively. A water tight seal is provided by an O-ring that is retained in a sealing groove of the male fitting and radially compressed against the throat wall when the male fitting is inserted in the female fitting. The water tight seal remains substantially intact when the male fitting is rotated relative to the female fitting. In a preferred embodiment, the male fitting is removable from the female fitting by first compressing the retaining ring so that it no longer extends into the second retaining groove.

Abstract: A connector comprises a casing 20 with a pipe fitting bore 25 to which a pipe P is fitted; a pipe fixing component 30 which slides against the casing and fixed the pipe P when the pipe is fitted to the pipe fitting bore 25; and a seal component 40 that is mounted facing the pipe duct 26 to seal the pipe P. The pipe fixing component 30 is elastically deformed, when the pipe P is fitted, from the temporary stop position at which it is temporarily stopped in the pipe fitting bore 25, and moves to the connecting position where the pipe is fixed, it being possible to externally view whether the pipe fixing component 30 is in the connecting position. The connector requires no checker or the like to check the connection with the pipe P, thus preventing poor seals.

Abstract: A quick coupler retention clip is disclosed for preventing an inadvertent disconnection of a quick coupler. The clip device includes a unitary clip having a first and a second end. The first end of the clip is of annular configuration so that the body of the coupler extends through the annular first end for anchoring the first end of the clip relative to the body. The second end of the clip is a C-shaped configuration to removably engage a groove defined between a collar and the body of the coupler. A strap extends between the first and second ends of the clip for securing the first and second ends of the clip together. The disconnection of the body from the port of the quick coupler is permitted only when the C-shaped second end is removed from engagement with the groove so that inadvertent disconnection of the body from the port is prevented.

Abstract: A quick connector includes a housing assembly for receiving one end of a conduit with an enlarged annular flange and a retainer for locking the conduit in the housing assembly. The housing assembly includes first and second housings which are rotatably and non-axially displaceably interconnected. A rigid top hat is fixedly mounted in the bore in the first housing to prevent axial displacement of the first and second housings. An annular recess in the top hat receives the flange on the conduit. The housings can also be incrementally indexable ribs on a stem of one housing fixedly and non-rotatingly engage an inner surface of a flexible conduit.

Abstract: A checker comprises a thin-walled checker body, a pull-ring and inwardly directed engagement portions. The pull-ring is formed on a widthwise center part of an outer peripheral portion of the checker body. The inwardly directed engagement portions are formed on widthwise opposite ends of the checker body. The checker is fitted and mounted on a connector housing so that the checker body seats in a fit-in slot defined by elongate ribs formed on a flat region of the connector housing and the inwardly directed engagement portions snap in and locking engage with engagement windows of the connector housing.

Abstract: A hose and quick connect coupling assembly comprising a receiving hose, an insertion hose, a pair of quick connect coupling halves each coupling half being identical to the other, and a securing clasp. The securing clasp releasably secures the coupling halves around the receiving hose, thereby forming a releasable coupling as the insertion hose in inserted into the receiving hose. The insertion hose may be removed by depressing the coupling halves together, causing the top portions thereof to pivot away from the insertion hose. The securing clasp may also be removed from the hose coupling, thereby removing the coupling halves from the receiving hose.

Abstract: A fuel injector unit comprises a follower assembly that includes a sleeve having an internal groove that receives a spring clip. The clip is made with a spring ring stock having a diameter less then the width of the groove so that the sleeve may be freely rotated around the retainer clip held in the groove. The retainer clip has linear portions aligned along the flat walls of a follower subassembly that receives a plunger carried by the follower assembly. The flat walls terminate at an expanded shoulder that limits displacement of the retainer clip to a fixed height of the follower assembly for shipping and handling, while permitting controlled axial movement of the follower assembly and the plunger along the aligned flat surfaces of the follower subassembly.

Abstract: A coupling assembly that includes: a) a female coupling member including a cavity opening onto its receiving end, where the cavity has an annular groove; b) a male coupling member including an annular rib, the rib having a tapered leading edge, a trailing edge and a maximum diameter between the leading and trailing edges; c) a diametrically expandable locking ring carried in the annular groove of the female coupling member; and d) an annular collar slidably carried on the male coupling member axially between the trailing edge of the annular rib and the trailing end of the male coupling member, where the annular collar includes an outer circumferential surface having an outer diameter substantially equal to or greater than the maximum diameter of the annular rib and where the annular collar is slidable on the male coupling member from an unlocked position, in which the collar is positioned axially against the annular rib providing a relatively smooth circumferential surface from the trailing edge of the annula

Abstract: A quick connect multi-hose connector includes a first carrier assembly characterized by a male housing which carries a plurality of quick connects that are trapped thereon and which are preferably free to rotate with respect thereto, and further includes a second carrier assembly characterized by a female housing which integrally carries a plurality of male configured connectors. The male housing is couplably matable with respect to female housing, wherein the male and female housings have an asymmetrical feature which allows mating to occur only in one predetermined relative orientation therebetween. A coupling feature holds the male and female housings in the mated state until a user elects to release the coupling feature.

Abstract: A coupling for a corrugated pipe has two retainers hinged integrally with the coupling so that they can be folded down to project through apertures in the coupling and engage between corrugations on the pipe. When folded down in full engagement with the pipe, spring levers on opposite sides of the retainers engage under ledges in the aperture. The levers cannot engage when a retainer does not fully engage between the corrugations thereby making it apparent that the retainer is not fully engaged.

Abstract: The present invention relates to a quick connection which comprises two elements, male and female, adapted to fit axially in each other. The body of the female element is equipped with a loaded bolt, mounted to slide in this body and pierced with a central opening for fit of the male element, the wall of this opening being equipped with three teeth offset with respect to one another along a median axis of the opening. The male element is provided with a shoulder adapted to rest selectively against one of the teeth. Means allow the downstream pipe to be placed in communication with the ambient atmosphere when the male element rests by its shoulder against the intermediate tooth.

Abstract: A fast-action coupler for coupling a first tubular component (1) to a second tubular component (2) includes a spring wire (8) as a retaining unit. The spring wire (8) is secured to the second component (2) and with its end part (12) is resiliently fixed in a locking position for a retaining part (6) on the first component (1). The end part (12) can also be unlocked simply and even from relatively great distances, counter to the spring force of the spring wire (8), by rotation of a tool (19).

Abstract: A fluid connector includes at least one barb adjacent one end for expanding a flexible conduit thereover. At least one axially and radially extending, non-annular rib is carried on the connector adjacent to the barb. The rib alters the end shape of the flexible conduit into raised and lowered portions which resist rotation of the flexible conduit relative to the connector. The ribs may be employed on any fluid connector, including an adaptor between two fluid conduits, or on a one or two piece fluid quick connector coupling an end form to a flexible conduit.

Abstract: A quick connector for establishing a connection between a flexible tube and an interior chamber of a vessel. The vessel has a wall structure through which a mounting bore extends. A canister assembly associated with the quick connector includes a housing is adapted for installation in the mounting bore, a retainer coupled to the housing that adapted to accept and retain a port connector of the hose therein, and a spring clip for coupling the housing to the wall structure. Flanged ends of the spring clip are retained in, and project outwardly from, corresponding apertures formed through a leading end of the housing. Upon installation of the housing into the mounting bore, the end flanges are deflected inwardly until the leading end of the housing extends beyond the mounting bore. Then the flanged ends return to their expanded condition, thereby coupling the canister assembly to the vessel.

Abstract: A piping joint includes a male member or joint fastened to a female member or socket by locking pawls of a retainer sleeve onto pawl engaging portions. By pressing a flange by the tip ends of the pawls, the male member (joint) can be disengaged from the female member (socket) by reducing the diameter of the retainer sleeve and disengaging the pawls from the pawl engaging portions. A ring member is formed of an elastic material and is inserted between the retainer sleeve and a cylinder portion in a locked condition. A reduction of the diameter of the retainer sleeve is prevented by the presence of the ring member. Therefore, the connecting or detaching of the piping joint can be carried out in a condition where a holding force of the piping joint is maintained.

Abstract: A coupling assembly for connecting two members is provided that includes a first “male” member and a second “female” member. The first member includes a release sleeve moveably mounted thereon having a rigid release portion and a flexible sealing portion. The second member comprises at least one of an integral coupling member integrated into an apparatus, such as a pump, and an independent coupling member. Upon connection of the first and second members, the flexible sealing portion sealingly engages a mating surface on the second member to substantially inhibit the entry of contamination into an area between the first and second members when connected. The present invention provides an improved release sleeve that releases the male member from both an independent female member and an integral female member.

Abstract: The present invention includes a pre-assembled, high-pressure coupling interface adapter for use with a non-threaded port of a female member. The adapter comprises a generally cylindrically shaped metal body including a central longitudinal channel and an inner and outer surface. The body includes an external segment having an external end and an internal segment having an internal end, the internal segment configured for receipt within the port of the female member. The inner surface of the body is configured to engage and secure one or more external features of a separate male coupling member. The present invention also includes a coupling assembly including a coupling adapter and a method for forming a female coupling assembly including an adapter.

Abstract: The invention relates to a line connector (1) for pipelines and/or hose lines, in particular fuel lines, comprising a connecting body (2) together with at least one line-connecting element (4). The or each line-connecting element (4) is connected to the connecting body (2) via a transitional section (16) which can be deformed elastically and/or plastically in such a manner that it can be bent or buckled transversely to a push-on axis (12) of the line and relative to the connecting body (2) while keeping the media sealed in. The line-connecting element (4) together with the transitional section (16) and the connecting body (2) is formed by a single-piece moulding (18) produced monolithically in a plastic moulding procedure in a multicomponent injection-moulding process from at least two different materials.

Abstract: A threadless flared fitting for mechanically connecting fluid transmission lines includes a diametrically guided sealed piston to engage the flared tube connection. This piston is axially spring loaded and designed to apply a hydrostatic force on the engaged flared connection. Axial clamping preload is provided by a compressed mechanical spring and the hydrostatic pressure force on the sealed piston will reinforce the clamping force in the flared connection and prevent separation.

Abstract: A coupling device for coupling an endpiece to a member, the coupling device comprising a female portion (7) for receiving the endpiece, and being characterized in that it comprises a bushing (16) mounted to slide in the female portion and possessing one end (18) projecting from the female portion which is provided on the outside with at least one blocking means (27) for blocking the bushing either in a pushed-in, locking position or else in a pulled-back, unlocking position, and an opposite end (17) provided both with front abutment means (20) for coming into abutment with an annular bead (4) of the endpiece (2), which front abutment means project radially inwards from the bushing, and rear abutment means (24) for coming into abutment with the bead so that when the bushing is in its unlocking position, the rear abutment means are movable by the annular abutment between a position in which they project towards the inside of the bushing and a retracted position, and when the bushing is in its locking position,