Abstract: This connection device (D) comprises a shaft (17) which is mobile in translation, a piston (19) integral with the shaft (17), a sleeve (35) which extends around the shaft (17), this sleeve being movable between a rear position and a forward position, and locking members housed in the sleeve (35), each locking member being movable relative to the sleeve between a locking configuration and a release configuration. The shaft (17) is movable between a disconnected position in which the shaft (17) does not oppose movement of the locking members to their release configuration, and the sleeve (35) is in the forward position, and a connected position in which the shaft (17) opposes movement of the locking members into their release configuration and the sleeve (35) is in the rear position, through an intermediate position, in which the shaft (17) opposes movement of the locking members into their release configuration and the sleeve (35) is in the forward position.

Abstract: A fluid coupling (R) comprising a male element (A) and a female element, a ring delimiting an inner channel of the female element (B), and a piston slidably mounted with respect to the ring (28) between a closed position and an open position of the inner channel. Between a disconnected configuration of the coupling and the connected configuration, the ring is moved rotationally with respect to the female body and the ring is held longitudinally in the female body, the piston is moved longitudinally from its closed position to its open position. The male body comprises an outer body and an inner body, the inner body delimiting an inner duct of the male element (A). During connecting, the outer body and the ring are rotationally fixed around the central longitudinal axis. In the connected configuration, the outer body and the ring are rotationally fixed. During connecting and in the connected configuration, the outer body and the inner body are free to rotate but unable to move in translation.