Abstract: Fluid coupling formed as an assembly of a first body section having an end portion with studs and a second body section having an end portion configured to receive the end portion of the first body section and having grooves for receiving a corresponding one of the studs. Each of the grooves has an axial inlet section, and a blind section extending circumferentially from the inlet section to an end wall movable between a projecting position retaining the stud in the blind section and a retracted position allowing the stud to pass from the inlet to the blind section. Rotation of one of the body sections passes the studs in the retracted position of the groove end wall from the inlet section into the blind section, the studs being retained in the blind section in the projected position of the groove end wall to couple the body sections.

Abstract: Fluid coupling formed as an assembly of a first body section having an end portion with studs and a second body section having an end portion configured to receive the end portion of the first body section and having grooves for receiving a corresponding one of the studs. Each of the grooves has an axial inlet section, and a blind section extending circumferentially from the inlet section to an end wall movable between a projecting position retaining the stud in the blind section and a retracted position allowing the stud to pass from the inlet to the blind section. Rotation of one of the body sections passes the studs in the retracted position of the groove end wall from the inlet section into the blind section, the studs being retained in the blind section in the projected position of the groove end wall to couple the body sections.

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: Fluid coupling formed as an assembly of a first body section having an end portion with studs and a second body section having an end portion configured to receive the end portion of the first body section and having grooves for receiving a corresponding one of the studs. Each of the grooves has an axial inlet section, and a blind section extending circumferentially from the inlet section to an end wall movable between a projecting position retaining the stud in the blind section and a retracted position allowing the stud to pass from the inlet to the blind section. Rotation of one of the body sections passes the studs in the retracted position of the groove end wall from the inlet section into the blind section, the studs being retained in the blind section in the projected position of the groove end wall to couple the body sections.

Abstract: A method of fabricating a device such as a coupling, the device fabricated by such method, and an element of such device for implementing the method. The method includes two bodies assembled together by laser welding, one of the bodies including a lens for refracting the laser radiation onto the other body.

Abstract: Coupling device for a fluid circuit in a motor vehicle, the device including: a functional member of a plastic material that is provided with two or more types of connection, at least one of which includes a manually-accessible member projecting from the outside surface of the functional member; and a protective metal housing formed by two shells joined by a seam around the functional member, the housing being provided with a window giving access to the manually-accessible member.

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 quick connector including a female part, a male part, and a latch. The latch includes a latching ring which slides within a housing of the female part, and a backing ring which is fitted on the latching ring and is slidable relative thereto. As the male part is inserted into the female part, the latching ring locks the parts and a folded tab of the backing ring is raised to provide a visual indication that male part is locked in the female part.

Abstract: A quick connector including a female part, a male part, and a latch. The latch includes a latching ring which slides within a housing of the female part, and a backing ring which is fitted on the latching ring and is slidable relative thereto. As the male part is inserted into the female part, the latching ring locks the parts and a folded tab of the backing ring is raised to provide a visual indication that male part is locked in the female part.

Abstract: Method of connecting an end portion of a multilayer tube to a channel of an element, at least the end portion of the tube including a surface layer that is weldable to at least one substantially annular wall of the element, and the assembly connected by the method. The method including the step of causing an area of the surface layer of the end portion of the tube to rub against the wall of the element so as to friction-weld the end portion of the tube to the element, the method including the prior step of turning back the end portion onto itself in such a manner that the area of the surface layer of the end portion extends facing the wall of the element.

Abstract: A guide bushing for guiding a tubular element in a bore of a coupling, the bushing being provided externally with retaining elements for retaining the bushing in the bore, and internally with guide shoes for guiding the tubular element inside the bushing, the retaining elements and the guide shoes being associated with portions of the bushing that are deformable between a first state in which the retaining elements are in an active position anchoring the bushing in the bore and in which the shoes define a section for passing the tubular element, and a second state in which the retaining elements are in inactive position set back from their active position and in which the guide shoes define a section that is smaller than the section for passing the tubular element. The invention also provides a corresponding coupling.

Abstract: A coupling comprising a body and a sleeve mounted coaxially on the body, the body defining a housing opening out in a face of the body to enable an end portion of the duct to be inserted therein, wherein the sleeve has an end projecting from said face of the body and provided with a catch step for catching the duct, wherein the sleeve is deformable radially and elastically from an endpiece-retaining state towards an endpiece-passing state, wherein the sleeve is mounted on the body to slide between first and second positions that are in successive relative to an insertion direction for inserting the duct into the housing, and wherein the body and the sleeve include complementary portions in relief that co-operate together when the sleeve is in its first position to hold the sleeve in its retaining state, and that are disengaged from each another when the sleeve is in its second position.

Abstract: Coupling device for a fluid circuit in a motor vehicle, the device including: a functional member of a plastic material that is provided with two or more types of connection, at least one of which includes a manually-accessible member projecting from the outside surface of the functional member; and a protective metal housing formed by two shells joined by a seam around the functional member, the housing being provided with a window giving access to the manually-accessible member.

Abstract: A connector for connecting a circuit element to a tubular endpiece has an external collar, the connector having a tubular body with means for connecting the tubular body to the circuit element and a housing to receive the endpiece. The housing has a sealing member and is defined by a wall pierced by a lateral opening, and receives a jumper that is movable transversely of the body between a projecting position for retaining the collar of the endpiece and a retracted position for releasing the collar. The body has a member for locking the jumper in the retaining position, the locking member being mounted on the body such that it is movable between a position which engages the jumper and a position which disengages the jumper.

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 instant coupling device for coupling a pipe end to a circuit element, the device comprising a body (10) axially subdivided into a joining section (11) for joining to the circuit element and a connection section (12) provided with a housing (14, 15) for receiving the pipe end, and means (19, 24, 25) for engaging it in leaktight manner, the engagement means comprising: at least one arm (19) extending axially from the connection section and having a free, gripper end (20) 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 (25) 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 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 present invention relates to a guide bushing for guiding a tubular element in a bore of a coupling, the bushing being provided externally with retaining elements for retaining the bushing in the bore, and internally with guide shoes for guiding the tubular element inside the bushing, the retaining elements and the guide shoes being associated with portions of the bushing that are deformable between a first state in which the retaining elements are in an active position anchoring the bushing in the bore and in which the shoes define a section for passing the tubular element, and a second state in which the retaining elements are in inactive position set back from their active position and in which the guide shoes define a section that is smaller than the section for passing the tubular element. The invention also provides a corresponding coupling.

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.