Patent attributes
This coupling (R) includes a male element (A) including a male body (2) provided with a locking relief (22), a purging ring (4) movable between a rear position, in which the purging ring closes off a purging passage of the male body, and a forward position, and a female element (B) including a female body (12, 14), a ball-retainer (23) carrying locking balls (18) of the male body, in a housing between a first position, in which they are able to oppose the removal of the locking relief, and a second position, in which the locking balls allow the removal of the locking relief, a valve body (25) secured to the ball-retainer, including coupling balls (27) suitable for securing the valve body and the female body in translation, an inner ring (29) suitable, in a retaining position, for keeping the valve body and the female body coupled by the coupling balls when the female element is uncoupled from the male element. In a first coupling configuration, the locking balls have crossed the locking relief of the male element; in a second coupling configuration, the inner ring has reached a position in which it no longer keeps the valve body and the female body coupled by the coupling balls; in a third coupling configuration, the female body keeps the locking balls in their first position; and in a fourth coupling configuration, the valve body has reached a position that allows fluid to pass between the two conduits. The female element includes steering means (32) able to drive the purging ring toward its forward position during the uncoupling.
