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Apparatus and method for providing breathable air and bodily protection in a contaminated environment

  • US 20060048777A1
  • Filed: 07/21/2005
  • Published: 03/09/2006
  • Est. Priority Date: 03/21/2003
  • Status: Abandoned Application
First Claim
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1. A breathing apparatus, comprising:

  • a face mask;

    a self contained breathing apparatus including a tank and a first conduit adapted to carry air from the tank to a face mask;

    a powered air purifying respirator having at least one filter, a blower, and a second conduit adapted to carry filtered ambient air to the face mask; and

    a valve system operably coupled to the powered air purifying respirator and to the self contained breathing apparatus, the valve system adapted to permit selective control of the source of breathable air supplied to the face mask.

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