Midget life-saving respirator gas tank apparatus

Claim 1

A midget respirator gas tank apparatus comprising at least first and second gas tank holders for securing thereto at least a first and a second small respirator gas tank, each gas tank including a pin-penetrable end closure means for retaining the gas within the tank in a gas-tight state, a pressure regulator connected to said first and second gas tank holders, gas passages in said apparatus that extend from each of said first and second gas tank holders to said pressure regulator, a first pin mechanism supported in said apparatus in a gastight state relative to said first gas tank holder for perforating said end closure of said first gas tank positioned at a pin-penetrable position in said first gas tank holder, and a piston drive pin mechanism positioned relative to said second gas tank holder and means operable to perforate the end closure of said second gas tank held in said second gas tank holder due to pressure of a respirable gas jetting out of said first gas tank when perforated by said first pin mechanism, wherein said pressure regulator is operable to regulate the pressure of the respirable gas from said first and second gas tanks, the pressure-regulated respirable gas being guided to a mouthpiece from a common chamber in said pressure regulator.