Patent ID: 6923200
Filing Date: 2005-08-02
Classification: B60C,B60S,Y10T

Abstract:
1. A safety device for inflating an envelope at risk of bursting comprising: a tubular body; a piston element mounted slidably and sealably to slide within at least one inner section of the tubular body; a piston rod integral with the piston and extending so as to protrude from a first end of the tubular body; an annular bottom member, arranged in the tubular body or at the first end thereof and suitable for slidably guiding the piston rod and for closing the tubular body, whereby delimiting an inner annular space together with the piston; removable anchoring means suitable for acting at the protruding end of the piston rod and for constraining the piston rod to a support; at least one inlet opening and at least one outlet opening formed in the tubular body at the annular space, the inlet opening being suitable for being connected to a pressurized fluid source and the outlet opening being arranged to be connected, in use, to the envelope to be pressurized; and yielding retention means for holding in position the piston element, so that in case of bursting, the unit formed by said tubular body and said annular bottom member, can be moved longitudinally, following a bursting impact, with respect to the piston element in contrast with the yielding retention means.