A coupling for a nipple is disclosed. The coupling comprises a main body (100); and an opening (110), for a fluid, in the main body (100), the opening (110) being cylindrical. The coupling comprises further a holder (130) arranged in the opening (110) holding a plurality of locking elements (140) for locking the nipple to the coupling, the holder (130) and the plurality of locking elements (140) being separate; and a retaining element (150) retaining the holder (130) in the opening (110), the retaining element (150) engaging the plurality of locking elements (140). A method for assembling such a coupling is disclosed. The method comprises inserting the holder (130) with the locking means (140) into the main body (100); and retaining the holder (130) in the main body (100) with the retaining means (150).

This female element of a quick connector that connects to a male element and has a hollow body, which extends along an insertion axis and which delimits a receiving volume for the male element. Radial openings, formed in the body along a radial axis, open into the receiving volume. Each radial opening receives a latch, translatable in relation to the body along the corresponding radial axis, between a locked and an unlocked position. The female element has an actuating ring arranged about the body and translatable between a locked and an unlocked position. The ring has guide grooves, which interact with pins of each latch. The guide grooves associated with each latch are geometrically carried by a guide plane inclined in relation to the insertion axis so that each latch is driven between its locked and unlocked positions when the actuating ring is moved between its locked and unlocked positions.

An intake for quick coupling pipes, to form a joint, including a body defining a central axis and a first channel at least partially centered relative to the central axis to partially house the joint, an annular sealing element movably within the first channel including a plurality of fastening sectors to reciprocally radially move and define release and clamping positions, an extractor partially in the body, movable along the central axis relative to the body and allowing the sealing element to pass from the clamping position to the release position. The body includes an obstruction defining a ring within the first channel. The sealing element defines an interference portion interfering with the obstruction. The obstruction and interference portion form a circular fulcrum around which the fastening sectors rotate and provide the release position as result of opening thrust caused by the extractor or joint passing in the sealing element.

A pipe-fitting includes a coupling and a flexible pipe-restraint gasket. The coupling includes a bell that defines a pipe insertion mouth at an end of the coupling and an inner recess. The flexible pipe-restraint gasket assembly is disposed within the inner recess and includes an annular body, a plurality of discrete gripping members and at least one extension portion. The plurality of gripping members are disposed around an outer periphery of the body. The at least one extension portion extends from the body and is disposed between a pair of the plurality of gripping members. The at least one extension portion defines a pocket.

A combined quick connector structure for fuel feed and return system may include a cover assembly; a lever mechanism along the inside walls of the fuel feed and fuel return openings of the cover assembly; a pawl and ratchet mechanism on either side of the cover assembly; a rib on either side of a connector assembly; the connector assembly with retainer elements for engine feed and engine return lines and fuel feed and return lines; actuator pads provided on the external and internal circumference of the openings of connector assembly; a locking mechanism on the inside circumference of the retainer elements for the fuel feed line and fuel return line; and a lever mechanism configured for hinging the cover assembly together with the connector assembly.

A pipe for connecting to a similar adjacent pipe. The pipe has a male end with a plurality of rigid fingers extending from within and out of at least one exterior circumferential groove disposed on its exterior surface. On the female end is at least one interior circumferential groove sized and positioned to receive the plurality of rigid fingers from a corresponding exterior circumferential groove on the male end of an adjacent pipe. The number of exterior circumferential grooves on the male end typically corresponds to the number of interior circumferential grooves on the female end. When the male end of the pipe inserts into the female end of a similar adjacent pipe, the plurality of rigid fingers is received within a corresponding interior circumferential groove on the female end, thereby preventing the male end of the pipe from being withdrawn from the female end of the similar adjacent pipe.

This female element of a quick connector that connects to a male element and has a hollow body, which extends along an insertion axis and which delimits a receiving volume for the male element. Radial openings, formed in the body along a radial axis, open into the receiving volume. Each radial opening receives a latch, translatable in relation to the body along the corresponding radial axis, between a locked and an unlocked position. The female element has an actuating ring arranged about the body and translatable between a locked and an unlocked position. The ring has guide grooves, which interact with pins of each latch. The guide grooves associated with each latch are geometrically carried by a guide plane inclined in relation to the insertion axis so that each latch is driven between its locked and unlocked positions when the actuating ring is moved between its locked and unlocked positions.

The invention relates to a female quick coupling element (200) comprising a hollow female body (204) defining a central axis (X200), locking members (208), each locking member being radially movable inside a corresponding radial opening (204.1) of the female body between a locked position and an unlocked position, at least one memory element (206), movable along a movement axis (D206) between a distal position, in which it opposes the movement of a locking member from the unlocked position to the locked position, and a proximal position, and a locking ring (218), which is axially movable between a forward position, in which it keeps the locking members in the locked position, and a withdrawn position. Each memory element (206) is received in a housing defined in the thickness of the body. Each memory element (206) is, in the distal position, closer to the central axis (X200) than the locking members (208) are in the unlocked position, and the movement axis (D206) of each memory element is inclined relative to the central axis (X200) of the female body.

Intake for quick coupling pipes, to couple to joint in fluidic connection, including body defining central axis and first channel at least partially centered relative the central axis and suitable to partially house joint, annular sealing element movably housed within first channel including plurality of fastening sectors to reciprocally move in radial direction and defining release and clamping positions, extractor partially housed in body, movable along central axis relative to body and allowing sealing element to pass from clamping to release position. The body includes obstruction defining a ring, centered relative to central axis and housed within first channel. Sealing element defines interference portion interfering with obstruction in direction parallel to central axis. Obstruction and interference portion form circular fulcrum around which fastening sectors rotate, moving away from each other, and provide release position as result of opening thrust caused by extractor or joint passing in sealing element.

A pipe-fitting includes a coupling and a flexible pipe-restraint gasket. The coupling includes a bell that defines a pipe insertion mouth at an end of the coupling and an inner recess. The flexible pipe-restraint gasket assembly is disposed within the inner recess and includes an annular body, a plurality of discrete gripping members and at least one extension portion. The plurality of gripping members are disposed around an outer periphery of the body. The at least one extension portion extends from the body and is disposed between a pair of the plurality of gripping members. The at least one extension portion defines a pocket.