Patent ID: 6629486
Filing Date: 2003-10-07
Classification: B64G,F15B

Abstract:
A device (1) for unlocking two subassemblies, comprising:a body (2) having a base (12) and a widened base (10), wherein the body (2) and base (12) define a space (19) and wherein the base (12) and a flared portion of the body (2) define a passage (18), a single gas generator (3), a gas expansion chamber (4) defined within the body (2), wherein the single gas generator is suitable to release gas in the gas expansion chamber, a release ring (5), a segmented nut (7), wherein the release ring (5) slides around the segmented nut split in segments, a connecting screw (8) that connects the two subassemblies and is screwed in the segmented nut (7), an ejector (6) configured to expel the connecting screw (8), and a shutter (9) connected to the base, wherein initiation of the gas generator (3) causes the release of gases and movement of the release ring (5) towards the shutter (9) in such a way so as to release the segments of the nut (7), and then move the ejector (6) to drive the connecting screw (8) and eject it from said nut (7), and a damping device that decelerates and halts the release ring (5) before it reaches the shutter (9), the damping being achieved by the influx of at least a portion of the gas from the generator through the passage (18) into the space (19) of the unlocking device (1), said passage (18) is closed by the movement of the release ring (5) to isolate the space (19) from the gas expansion chamber (4).