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Portable air respirator

  • US 5,724,963 A
  • Filed: 10/27/1995
  • Issued: 03/10/1998
  • Est. Priority Date: 10/27/1995
  • Status: Expired due to Fees
First Claim
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1. A portable respirator system for use in combination with a source of compressed air and a hand-held, air-driven work implement to provide breathable air to an operator of said implement when driven by said source of compressed air, the improvement comprising:

  • a respirator mask having an inlet for breathable air and an outlet for exhalation adapted to be worn by said operator said inlet having no filter therein and no filter being carried by said mask;

    a filter system comprising a housing adapted to be carded by an operator and having a first outlet port in communication with the inlet to said mask, a second outlet port adapted to be operably coupled to a work implement and an inlet port adapted to be coupled to and to receive compressed air from said source thereof;

    carrying means, separate from said mask, for releasably attaching said housing to said operator;

    diverter valve means disposed in said housing coupled to said inlet port for continually diverting a flow of compressed air from said source to said second outlet port, and for directing a predetermined controlled flow of compressed air to said first outlet port and further including cooling means for cooling said predetermined flow; and

    filter means disposed in said housing between said valve means and first outlet port for receiving the predetermined flow, filtering the same and expelling the filtered flow into said first outlet port.

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