Patent ID: 7762189

Claim:
An actuator comprising: a housing defining a chamber and including first and second openings to the chamber; a cover being coupled to the housing and configured to occlude the second opening; a bellows being coupled to the housing and defining an internal cavity, the bellows having a contracted configuration and an expanded configuration; and an initiator being disposed in the chamber, the initiator including a pyrotechnical device and a filler material being disposed in the chamber between the pyrotechnical device and the cover, the pyrotechnical device including a bridge element and at least one lead extending from the bridge element, through the filler, through the second opening in the housing and through the cover; wherein the initiator has an unfired condition and a fired condition the unfired condition of the initiator corresponds to the contracted configuration of the bellows and the fired condition of the initiator includes raising pressure in the internal cavity to at least 3,000 pounds per square inch, and wherein raising pressure in the internal cavity is the sole force expanding the bellows to the expanded configuration.