Patent ID: 7530605

Claim:
A quick-connect coupling suitable for being fitted axially onto a tube which presents a substantially radial catch surface remote from a free end of the tube, the coupling comprising a body suitable for co-operating with sealing means for establishing a leaktight connection with the tube, and a locking clip which is retained axially relative to the body and which presents at least one locking zone, the clip being such that, starting from a locking configuration in which it is suitable for co-operating with the catch surface of the tube in order to retain said tube, said clip is suitable for being deformed to take up an unlocking configuration, wherein: the clip is disposed over a wall of the body, said wall being provided with at least one transverse slot through which the locking zone projects into the body when the clip is in the locking configuration, and said wall being provided with at least one setback provided at one end of the slot, said setback having a bottom portion formed on an edge of the slot; the clip has at least one unlocking zone which is situated at one end of the locking zone and which has an axial width that is greater than an axial width of said locking zone and greater than an axial width of the slot, but less than or equal to an axial width of the setback; and said bottom portion of the setback forms an unlocking ramp on which the unlocking zone is suitable for sliding in order to cause the clip to go from the locking configuration to the unlocking configuration; and wherein the bottom portion of the setback forming the unlocking ramp is provided on the edge of the slot, on both sides thereof, and the unlocking zone of the clip extends axially on both sides of the locking zone.