Patent ID: 8910814

Claim:
A safety device ( 1 ) for containers ( 2 ) holding fluid under pressure, each container having at least a upper component ( 3 ) and a bottom component ( 3 ) to be engaged with each other and defining an inner volume adapted to receive said fluid under pressure, said safety device comprising: a closing system ( 4 ) defining a closed position in which said components ( 3 ) are engaged together in a fluid-tight manner, and an open position in which they can be mutually moved and separated, a vent member ( 5 ) defining a closed position and a venting position of said fluid under pressure inside the container ( 2 ), at least one junction mechanism ( 14 ) to operatively connect the venting member ( 5 ) to the closing system ( 4 ), wherein the junction mechanism ( 14 ) is able to lock the closing system ( 4 ) to the closed position only when the vent member ( 5 ) is in the closed position; wherein the closing system ( 4 ) comprises at least two sealing elements ( 6 ), adapted to mutually seal both upper and bottom components ( 3 ) of the container ( 2 ), and an operating arm ( 8 ) designed to mutually engage and join together two sealing elements ( 6 ); and wherein said sealing elements ( 6 ) have the shape of half a ring so that, when two sealing elements ( 6 ) are joined together at protuberances ( 6 a ) on said sealing elements ( 6 ), and said sealing elements ( 6 ) are mounted on a rib ( 3 a ) that surrounds externally the whole circumference of the upper component ( 3 ) they achieve a close position of the container ( 2 ).