Pyrotechnic piston device

摘要

A pyrotechnic piston device the housing of which has a cylindrical internal wall in which is mounted a piston. A pyrotechnic device is disposed adjacent the piston. A metal-to-metal seal is formed between the piston and the cylindrical wall to prevent blow-by of products of the explosion. Two types of constructions are provided to prevent bounce-back of the piston after it has reached the forward end of its stroke.