Patent ID: 8104140

Claim:
A decelerating device adapted to intercept an end-of-stroke part of a closing path of a mobile member, the device comprising: a body configured to be fastened to an abutting surface for the mobile member and internally defining a sealed chamber configured to be filled with a viscous fluid; an elastic member housed in the body; a pushrod at least in part overhanging from the body and configured to cooperate with the mobile member, the pushrod being integral with a stem slidingly accommodated in the body against the bias of the elastic member between an extracted position of the pushrod and a retracted position, said elastic member bounding a portion of said stem within said body; and a piston accommodated in the sealed chamber so as to divide it into two portions maintained in reciprocal hydraulic communication, and mechanically connected to the stem; the stem presenting a first end integrally connected to the pushrod and a second end opposite to the first, wherein said first and second ends of the stem are both configured to slide outside the sealed chamber while housed in the body and are configured to slide in a fluid-tight manner with regard to the sealed chamber; wherein said body comprises a casing shaped so as to define therein a first and a second cup-shaped concavities, reciprocally opposite and subdivided by a common first bottom wall provided with a passage hole for the stem and with a first seat for a seal rubbing on the stem; the first concavity being shaped to accommodate said pushrod therein in said retracted position through one mouth thereof and abuttingly against said first bottom wall; and the second concavity being fluid-tightly closed to one mouth thereof by a cap, so as to define said sealed chamber, said cap comprising a cavity therewithin to accommodate a portion of said stem in said retracted position.