Patent ID: 9649520
Date: 2017-05-16
CPC Classifications: A62C,F16K

Claim:
1. A fire extinguisher actuator assembly for a fire extinguisher, the fire extinguisher comprising a fire extinguisher reservoir and a burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent within the fire extinguisher reservoir, the fire extinguisher actuator assembly comprising: a cutter shuttle assembly comprising a cutter coupled to a shuttle body, the cutter shuttle assembly detained within the fire extinguisher proximate the burst disc and biased to form a pressure equalization region between the shuttle body and the burst disc; and an activation device comprising a piercing member, the activation device operable to drive the piercing member through the burst disc and release the pressurized fire extinguishing agent from within the pressure equalization region prior to movement of the cutter shuttle assembly, wherein the release of the pressurized fire extinguishing agent from within the pressure equalization region drives the cutter shuttle assembly towards the burst disc and the cutter through the burst disc to release the pressurized fire extinguishing agent from the fire extinguisher reservoir through the discharge head.