ApplicationNo. 465493 filed on 01/16/1990
US Classes:128/207.12, Valve for controlling gas flow128/206.15With gas flow control valve
ExaminersPrimary: Crowder, Clifford D.
Assistant: Asher, Kimberly L.
Attorney, Agent or Firm
International ClassesA62B 018/02
AbstractA respirator comprising an assembly of an outer housing member and an inner housing member which sandwich therebetween a filter and valve assembly that functions to allow the use to inspire purified and filtered outside air.