Abstract: A coupling device includes a tubular body (100) having a plastics material portion provided with an anchor member (5) for anchoring the tubular body in a first duct, the anchor member being made of metal. The anchor member is secured to a metal support element (1) that is covered at least in part in a layer of plastics material (9) compatible with the plastics material of said tubular body portion and that is connected to said portion by local welding of said portion with said layer. A method of fabricating such a coupling device.

Abstract: An anchor washer for anchoring a first element and a second element in relative engagement, includes an annular portion from which there extends at least one tooth that is inclined relative to a central axis of the annular portion, the annular portion being designed for mounting on the first element, and the tooth having two side faces between which there extends a rubbing surface for being oriented substantially towards the second element, the surface being connected to the side faces via coupling portions, the tooth being shaped so that at least one of the coupling portions is set back from at least a portion of the surface so that the coupling portion is kept at a distance from the second element. A coupling device including such a washer is also disclosed.

Abstract: A coupling device for coupling a pipe end to a circuit element, the device including a body axially subdivided into a joining section for joining to the circuit element and a connection section provided with a housing for receiving the pipe end, and elements for engaging it in leaktight manner, the engagement elements including at least one arm extending axially from the connection section and having a free, gripper end for gripping the pipe end, the arm being elastically deformable between a gripping state and a release state for releasing the pipe end; and a holding ring connected to the connection section to receive a portion of the pipe end and to pivot between a position allowing free deformation of the arm, and at least one holding position in which a surface of the ring holds the arm in one of its two states.

Abstract: A tubular element for securing to a tube end by friction-welding for the purpose of transporting a fluid, the element includes a body (1) having a housing (5) formed therein to receive the tube end, the housing having an inlet segment (6) for the tube end and a welding segment (9) with an inlet defined by a surface (13.2) for initiating welding. The housing further includes, between the inlet segment and the welding segment, at least one reception groove (8) for receiving a portion of the tube end that is pushed back during welding, the reception groove having a flank with at least a portion forming the weld-initiating surface and on its other side an abutment flank for the pushed-back portion. A method of friction welding is also disclosed.

Abstract: A ball coupler having a longitudinal axis and including a male tubular endpiece; a female tubular endpiece; and a tubular sleeve extending the female endpiece and presenting slots for forming a cage for retaining balls for blocking the male endpiece in the female endpiece. A grip is coaxial about the sleeve and mounted to turn about the longitudinal axis of the coupler between at least two angular positions relative to the sleeve, the grip having a housing for each ball. A resilient return device urges the grip into its first position, including in the grip, a ring that is constrained to turn with the grip and that is movable axially relative thereto.

Abstract: The invention relates to a coupling device comprising a tubular body (100) having a plastics material portion provided with an anchor member (5) for anchoring the tubular body in a first duct, the anchor member being made of metal. The anchor member is secured to a metal support element (1) that is covered at least in part in a layer of plastics material (9) compatible with the plastics material of said tubular body portion and that is connected to said portion by local welding of said portion with said layer. The invention also provides a method of fabricating such a coupling.

Abstract: An instantaneous connection device includes a tubular body and a tight element which is used to hold the end of a line in the body and includes a holding element arranged to receive the end of the line and a cam element arranged between the body and the holding element and used to move the holding element from a free state into a state wherein it grips the end of the line when it is axially displaced in the tubular body between a first position and a second position. The holding element includes two jaws independently mounted in the body so as to slide between the two positions, and the cam element includes two transversal pins that are fixed to the jaws or body so as to slidingly co-operate, with transversal surfaces fixed to the body or the jaws and inclined in relation to the sliding direction.

Abstract: A fluid transport circuit element comprising a body having a bore with one end fitted with a pipe end coupling device, the coupling device having a portion fitted with an anchor washer for anchoring the device in the bore, the washer being deformable between an anchor state and a free passage state, and wherein the portion fitted with an anchor washer is drivable from outside the body in the insertion direction into the bore from an anchor position in which the washer is in its anchor state and a release position in which the washer co-operates with an abutment that is stationary relative to the bore in the insertion direction, thereby bringing the washer into its free passage state in which it is retained by a retainer.

Abstract: An instantaneous connection device includes a tubular body, a tight element used to hold the end of a line in the body and includes an elastically deformable annular sealing element and a holding element that are arranged to receive the end of the line, a cam member for moving the holding element from a free state into a state wherein it grips the end of the line when it is axially displaced in the tubular body from a first position to a second position, and an elastic member for bringing the holding element back towards its second position. The sealing element is mounted between a radial shoulder of the body and a radial face of the holding element. The radial shoulder and the radial face are provided with reciprocal reliefs for laterally coming into contact with the annular sealing element.

Abstract: A connector with enhanced safety includes: a female component defining a stepped housing, a male component with a flange, whereof the outer diameters correspond to those of the stepped housing of the female component, a lock collar transversely mobile in a base of the female component, located at the intake thereof. There is an additional locking cage whereof one wall forms a front cap at the end of the female component, mounted sliding on the base of the lock collar between a connecting position allowing the flange to pass through the front cap of the cage, and a locking position preventing the flange from passing through the front cap, the cage including, parallel to the cap and at the rear thereof, a wire pin whereof the elastic branches define each of the two positions through matching shapes with the female component.

Abstract: A tubular element for securing to a tube end by friction-welding for the purpose of transporting a fluid, the element includes a body (1) having a housing (5) formed therein to receive the tube end, the housing having an inlet segment (6) for the tube end and a welding segment (9) with an inlet defined by a surface (13.2) for initiating welding. The housing further includes, between the inlet segment and the welding segment, at least one reception groove (8) for receiving a portion of the tube end that is pushed back during welding, the reception groove having a flank with at least a portion forming the weld-initiating surface and on its other side an abutment flank for the pushed-back portion. A method of friction welding is also disclosed.

Abstract: A quick connector includes a female portion with a staggered bore whereof one cross-section with large diameter can receive an outer flange of a male portion of the connector beyond a lock, the lock including a ring having an orifice for allowing through the flange and mounted in a housing provided in the female portion at the cross-section with large diameter of its bore to slide radially in the housing between a first inactive locking position wherein the passage orifice of the ring is eccentric relative to the axis of the bore and a second retracted position wherein the passage orifice is substantially coaxial with the bore. The lock further including a locking indicator mounted radially sliding in the ring between a first indicating position wherein the locking indicator does not obstruct the passage orifice and a second indicating position wherein the locking indicator obstructs the passage orifice.

Abstract: A quick coupling comprising a body with a conical opening and an outside thread, a nut with a central through orifice and a cylindrical counterbore extending the through orifice and tapped over its portion that is remote from the through orifice, and a conical surface connecting the through orifice to the counterbore, the coupling comprising a ring housed in the counterbore of the nut, the ring having a front face directed towards the thread that is fitted with a sealing gasket whose rear face facing towards the coupling surface co-operates therewith to define a radial expansion housing for a split spring washer.

Abstract: The invention relates to a washer for a tube coupler device, the washer having an inner portion subdivided into a plurality of teeth with active portions having a free edge that defines an inside edge of the washer and that is arranged to penetrate into an outside surface of the tube, wherein the active portions are arranged so that the inside edge is substantially continuous. The invention also provides a method of making the washer and a coupler device.

Abstract: Connection elements include a coupling defining an internal channel having an end segment possessing an insertion opening for insertion of an endpiece and provided with members for retaining the endpiece in leaktight manner therein. The members include an annular axially compressible sealing element that is mounted in the coupling to have one face serving as a bearing surface for a terminal face of the endpiece, and an annularly-shaped retaining element elastically deformable in a radial direction that is received in an inner groove (21) of the end segment to have an inner circumferential portion projecting through an opening of the inner groove so as to be received in an outer groove of the endpiece. The inner groove has a concave frustoconical flank beside the opening of the end segment to form members for shrinking the retaining element, and a convex frustoconical flank on its side remote from the opening.

Abstract: A device for leaktight coupling of a tube to a tubular nose, the tube being provided with an outwardly-directed bead at a distance from its end, the tubular nose presenting an outside thread and including an inlet bore for defining a housing for an annular gasket and an annular gasket-retaining insert, the device including a nut having the tube passing therethrough and presenting an end inside thread for co-operating with the thread of the tubular nose and including a chamber behind the thread, the chamber terminating by a drive wall, and an axial drive collar removably placed between one of the flanks of the bead and the drive wall, the collar extending axially towards the end of the tube beyond the bead in the chamber to co-operate with the insert, slidable in its housing and shaped as a pusher for compressing the gasket between the bore and the tub.

Abstract: A connector with enhanced safety includes: a female component defining a stepped housing, a male component with a flange, whereof the outer diameters correspond to those of the stepped housing of the female component, a lock collar transversely mobile in a base of the female component, located at the intake thereof. There is an additional locking cage whereof one wall forms a front cap at the end of the female component, mounted sliding on the base of the lock collar between a connecting position allowing the flange to pass through the front cap of the cage, and a locking position preventing the flange from passing through the front cap, the cage including, parallel to the cap and at the rear thereof, a wire pin whereof the elastic branches define each of the two positions through matching shapes with the female component.

Abstract: The invention concerns a quick coupling device comprising a tubular insert (4) provided with external anchoring means (5), a prong washer (12) which delimits a passage and housed in the tubular insert, and at least a gasket (10), the device comprising a tubular bushing (9) connected by linking means (8, 12) to the tubular insert (4) to extend into the passage opening of the washer coaxially thereto.

Abstract: A device for coupling an end of a hose to a member, comprises a body provided with an internal channel opening out into a chamber having quick-connection elements for connecting the end of the hose to the channel. The quick-connection elements comprise a washer with teeth disposed in the chamber and associated with a tubular disconnection pusher which is mounted to slide inside the chamber and which possesses a drive end projecting outside the body, and an opposite end for lifting the teeth. The device comprises protection elements for protecting the connection, which include a sleeve (18) possessing axially in succession: a connection portion (19) for connection to the body extending around the drive end; and a hose guide portion (20) which is secured to the connection portion via an end opposite from the body and which extends beyond the drive end coaxially with the internal channel.

Abstract: Elements for connecting a first end selection (3) of pipe elements to a second end selection (4) of pipe elements, the connecting elements including a sealing joint (20) interposed between the end faces (7, 8) of the first and second end sections and fixing elements (32, 44) which are mounted on the first and second end sections and are coupled to first and second axial abutting elements along the first and second end sections in order to hold the above together and compress the sealing joint between them. The first axial abutting elements include an external shoulder (9) formed on the first section near the end face and the second axial abutting elements include a fixed dowel (50) provided with elements (51)for axial fixing thereof along the second end section.