Apparatus and methods for fitting mechanical parts to minimize prevent free play are described. An apparatus having a piston is designed so as to restrain the piston before actuation, and so as to allow the piston to gain momentum before striking an object. The described apparatus are applicable to devices involving shearable elements. An embodiment of the invention relates to a pyrotechnically activated valve incorporating such features to minimize free play in conjunction with such features so as to restrain the piston and also allow the piston to gain momentum.
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein by reference, and claims all benefits accruing under 35 U.S.C..sctn.119(e) from my application PISTON-ACTIVATED VALVE filed as a provisional application in the U.S. Patent and Trademark Office as U.S. application Ser. No. 60/261,199, filed on Jan. 16, 2001.
