Rapid pressure diffusion actuator for a fire extinguisher

A method of installing a fire extinguisher actuator assembly in a fire extinguisher, the fire extinguisher comprising a fire extinguisher reservoir and a fire extinguisher outlet burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent at an internal fire extinguisher pressure within the fire extinguisher reservoir, the method comprising:

• detaining a cutter within the fire extinguisher proximate the fire extinguisher outlet burst disc;
• placing an interior container within the fire extinguisher reservoir, the interior container having a container pressure and sealed with a container burst disc, wherein the container pressure is less than the internal fire extinguisher pressure prior to piercing of the container burst disc;
• and
• positioning an activation device comprising a piercing member within the fire extinguisher, the activation device operable to pierce the container burst disc and diffuse the container pressure to create a pressure differential relative to the internal fire extinguisher pressure at the cutter, thereby driving the cutter through the fire extinguisher outlet burst disc to release the pressurized fire extinguishing agent through the discharge head.