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Firefighter's emergency smoke filter

DC
  • US 5,562,092 A
  • Filed: 07/31/1995
  • Issued: 10/08/1996
  • Est. Priority Date: 06/14/1993
  • Status: Expired due to Term
First Claim
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1. A method for prolonging breathing through a self contained breathing apparatus for use in emergencies comprising the steps of:

  • a) providing a self contained breathing apparatus including a mask securable over the face of an individual and a regulator removably couplable to said mask containing an air supply, and an emergency smoke filter removably couplable to said mask in place of said regulator;

    b) coupling said regulator and air supply to said mask through an opening in said mask;

    c) utilizing said air supply as a primary source of breathable air until said air supply malfunctions or is depleted;

    d) removing said regulator and air supply from the opening in said mask;

    e) replacing said regulator and air supply with said smoke filter by coupling said filter to said opening in said mask; and

    f) utilizing said filter system to filter smoke or toxins from air in the environment.

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