Patent ID: 8894428

Claim:
A connecting device ( 12 ) for the fluid-tight connection of a first and a second duct ( 2 , 11 ); the connecting device ( 12 ) comprises: a connector ( 14 ), which is suited to establish a fluid-tight joint between said two ducts ( 2 , 11 ) and is provided with a fixed electrical connection terminal ( 15 ); a mobile electrical connector ( 18 ), which is mechanically independent of the first and the second duct ( 2 , 11 ) and, furthermore, is mechanically separated from and independent of the connector ( 14 ) and is suited to establish an electrical connection with the fixed electrical connection terminal ( 15 ); a control unit ( 13 ), which is suited to check the presence of a connection between the fixed electrical connection terminal ( 15 ) and the mobile electrical connector ( 18 ); and an intermediate connecting body ( 17 ), which is interposed between the connector ( 14 ) and the mobile electrical connector ( 18 ), is suited to establish an electrical connection with both the fixed electrical connection terminal ( 15 ) and the mobile electrical connector ( 18 ), and is adapted to allow the fixed electrical connection terminal ( 15 ) and the mobile electrical connector ( 18 ) to be coupled to each other, only when there is a fluid-tight joint between the two ducts ( 2 , 11 ); the connecting device ( 12 ) further comprising coupling means ( 25 , 27 ; 28 , 29 ) for coupling the intermediate connecting body ( 17 ) to the fixed electrical connection terminal ( 15 ) and to the mobile electrical connector ( 18 ) respectively; the coupling means ( 25 , 27 ; 28 , 29 ) being manufactured so as to mechanically prevent the fixed electrical connection terminal ( 15 ) and the mobile electrical connector ( 18 ) from being connected, when there is no fluid-tight joint between the two ducts ( 2 , 11 ).