Patent ID: 8468652

Claim:
Decelerating device ( 1 ) comprised of a cylinder ( 2 ) having a closed bottom and filled with a fluid, a bushing ( 3 ) for the closure of a top of said cylinder ( 2 ) and traversed by a rod ( 4 ) sliding in said cylinder ( 2 ), and a piston ( 5 ) sliding inside said cylinder ( 2 ) and fitted with means ( 7 ) for the calibrated through passage of said fluid, said decelerating device characterized in that said piston ( 5 ) is an element separated from said rod ( 4 ), said rod ( 4 ) having a rear head ( 21 ) for resting on said piston ( 5 ), and there are first elastic means ( 8 ) for biasing the movement of said piston ( 5 ) in the direction of extraction of said rod from said cylinder ( 2 ) and second elastic means ( 9 ) independent of said first elastic means ( 8 ) for biasing the movement of said rod ( 4 ) in the direction of extraction of said rod from said cylinder ( 2 ), said rod ( 4 ) being freely movable in said cylinder ( 2 ) and actuated only by said second elastic means ( 9 ) during the extraction stroke, independently of said piston ( 5 ) and said first elastic means ( 8 ) acting on said piston ( 5 ).