Patent ID: 7338086

Claim:
A coupling with increased safety, the coupling comprising: a female endpiece ( 1 ) defining a stepped housing ( 2 ); a male endpiece ( 10 ) with a collar ( 11 ), the outside diameters thereof corresponding to the diameters of the stepped housing in the female endpiece ( 1 ); a locking ring ( 4 ) movable transversely in a base ( 3 ) of the female endpiece ( 1 ), situated at the entrance to the housing therein; and an additional locking cage ( 6 ) having a wall forming a front cap ( 7 ) at the end of the female endpiece and mounted to slide transversely on the base ( 3 ) of the locking ring ( 4 ) between a connection position allowing the collar ( 11 ) to pass through the front cap ( 7 ) of said cage, and a locking position preventing said collar from passing through said front cap; wherein the cage ( 6 ) includes a wire metal clip ( 12 ) extending parallel to said front cap ( 7 ) and located behind said front cap, the clip having resilient limbs comprising means for indexing the two above-mentioned positions by shapes matching the female endpiece ( 1 ).